| all | frequencies |
|
|
exhibits | applications |
|---|---|---|---|---|---|
| manuals | |||||
| app s | submitted / available | |||||||
|---|---|---|---|---|---|---|---|---|
| 1 |
|
Manual 1 of 2 | Users Manual | 2.65 MiB | ||||
| 1 |
|
Manual 2 of 2 | Users Manual | 1.89 MiB | ||||
| 1 | Cover Letter(s) | |||||||
| 1 | Attestation Statements | |||||||
| 1 | External Photos | |||||||
| 1 | Internal Photos | |||||||
| 1 | ID Label/Location Info | |||||||
| 1 | ID Label/Location Info | |||||||
| 1 | Test Report | |||||||
| 1 | Test Report | |||||||
| 1 | Test Report | |||||||
| 1 | Test Report | |||||||
| 1 | Test Report | |||||||
| 1 | Test Setup Photos | |||||||
| 1 | Cover Letter(s) | |||||||
| 1 | Cover Letter(s) |
| 1 | Manual 1 of 2 | Users Manual | 2.65 MiB |
L.A. M.T.A. BDA Line Amplifier User/Maintenance Handbook For GETS Global Signalling LLC AWL Works Order Q115342 Product Part Nos. In-Line BDA Wall Mount 80-301401 In-Line BDA Rack Mount 80-301406 AFL and Avitec have merged to form Axell Wireless AXELL WIRELESS UK Aerial House Asheridge Road Chesham, Buckinghamshire HP5 2QD, United Kingdom Tel: + 44 (0) 1494 777000 Fax: + 44 (0) 1494 777002 info@axellwireless.com www.axellwireless.com AXELL WIRELESS SWEDEN Box 7139 174 07 Sundbyberg Sweden Tel: + 46 (0) 8 475 4700 Fax: + 46 (0) 8 475 4799 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 1 of 148 Table of Contents 1. INTRODUCTION.......................................................................................................................... 7 1.1. Scope and Purpose of Document ............................................................................................. 7 1.2. Limitation of Liability Notice ...................................................................................................... 7 2. SAFETY CONSIDERATIONS ...................................................................................................... 8 2.1. Earthing of Equipment .............................................................................................................. 8 2.2. Electric Shock Hazard............................................................................................................... 8 2.3. RF Radiation Hazard ................................................................................................................ 8 2.4. Lifting and other Health and Safety Recommendations............................................................ 8 2.5. Chemical Hazard ...................................................................................................................... 9 2.6. Laser safety .............................................................................................................................. 9 2.7. Emergency Contact Numbers................................................................................................... 9 3. 3.1. 3.1.1. IN-LINE BDA WALL MOUNT 80-301401 ................................................................................... 10 In-Line BDA Wall Mount 80-301401 Specification .................................................................. 11 In-Line BDA Wall Mount 80-301401 Overall system Diagram.......................................... 12 3.2. In-Line BDA Wall Mount 80-301401 List of Major Components ............................................. 13 3.3. Combiner 80-301402 .............................................................................................................. 13 3.3.1. Combiner 80-301402 System Diagram ............................................................................ 14 3.3.2. Combiner 80-301402 Outline Drawing ............................................................................. 15 3.3.3. Combiner 80-301402 Specification .................................................................................. 16 3.3.4. Combiner 80-301402 Photographs .................................................................................. 17 3.3.4.1. Front View.................................................................................................................. 17 3.3.4.2. Underside view showing RF connectors.................................................................... 18 3.3.4.3. Interior view ............................................................................................................... 19 3.3.5. Combiner 80-301402 Major Sub-Components................................................................. 20 3.3.5.1. Bandpass Filter 02-010701........................................................................................ 20 3.3.5.2. Bandpass Filter 02-010901........................................................................................ 20 3.3.5.3. Crossband Splitter/Coupler 550/800MHz (07-004815).............................................. 21 3.3.5.4. Crossband Splitter/Coupler VHF/UHF (07-005754)................................................... 21 30dB Directional Coupler (07-018005) ...................................................................... 22 3.3.5.5. 3.3.5.6. 30dB Bi-Directional Coupler (07-022005) .................................................................. 23 3.4. VHF/UHF BDA Unit (80-301403) ............................................................................................ 24 VHF/UHF BDA Unit (80-301403) System Diagram .......................................................... 25 VHF/UHF BDA Unit (80-301403) Outline Drawing ........................................................... 26 VHF/UHF BDA Unit(80-301403) Specification ................................................................. 27 VHF/UHF BDA Unit(80-301403) Photographs ................................................................. 28 3.4.4.1. Front View.................................................................................................................. 28 3.4.4.2. Underside view showing connectors ......................................................................... 29 Interior view ............................................................................................................... 30 3.4.4.3. VHF/UHF BDA Unit(80-301403) Major Sub-components ................................................ 31 3.4.5.1. Bandpass Filter (01-002503) ..................................................................................... 31 3.4.5.2. 30dB Directional Coupler (07-002908) ...................................................................... 32 3.4.5.3. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) ............................................... 32 3.4.5.4. Low Noise Amplifier (11-005401) .............................................................................. 33 3.4.5.5. TETRA Power Amplifier 20W (12-016301) ................................................................ 34 3.4.5.6. TETRA Power Amplifier 5W (12-021601) .................................................................. 35 3.4.5.7. Low Power Amplifier (1Watt) (12-021801)................................................................. 36 3.4.5.8. VHF Power Amplifier 5W (12-025602)....................................................................... 37 3.4.5.9. Automatic Gain Control.............................................................................................. 38 24V Relay Dual Assembly (20-001602) ................................................................... 38 3.4.5.10. 3.4.5.11. 24V Relay Assembly (80-008902) ........................................................................... 39 3.4.5.12. Dual Diode Assembly (94-100004) .......................................................................... 39 3.4.5.13. DC/DC Converter, 24V in, 12V 5A out (96-200024) ................................................ 40 3.5. UHF BDA Unit (80-301404) .................................................................................................... 41 3.5.1. UHF BDA Unit (80-301404) System Diagram .................................................................. 42 3.5.2. UHF BDA Unit (80-301404) Outline Drawing ................................................................... 43 3.4.1. 3.4.2. 3.4.3. 3.4.4. 3.4.5. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 2 of 148 3.6. 3.6.5. 3.6.1. 3.6.2. 3.6.3. 3.6.4. 3.5.3. UHF BDA Unit (80-301404) Specification ........................................................................ 44 3.5.4. UHF BDA Unit (80-301404) Photographs ........................................................................ 45 3.5.4.1. Front View.................................................................................................................. 45 3.5.4.2. Underside view showing connectors ......................................................................... 46 3.5.4.3. Interior view ............................................................................................................... 47 3.5.5. UHF BDA Unit (80-301404) Major Sub-components ....................................................... 48 3.5.5.1. 30dB Directional Coupler (07-002908) ...................................................................... 48 3.5.5.2. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) ............................................... 48 3.5.5.3. Low Noise Amplifier (11-005401) .............................................................................. 49 3.5.5.4. TETRA Power Amplifier 20W (12-016301) ................................................................ 50 3.5.5.5. TETRA Power Amplifier 5W (12-021601) .................................................................. 51 3.5.5.6. Low Power Amplifier (12-021801).............................................................................. 52 3.5.5.7. DC/DC Converter, 24V in, 12V 8A out (13-003011) .................................................. 53 3.5.5.8. Automatic Gain Control.............................................................................................. 53 24V Relay Dual Assembly (20-001602)..................................................................... 54 3.5.5.9. 3.5.5.10. 24V Relay Assembly (80-008909) ........................................................................... 54 3.5.5.11. Dual Diode Assembly (94-100004) .......................................................................... 55 800MHz BDA UNIT (80-301405) ............................................................................................ 56 800MHz BDA UNIT (80-301405) System Diagram .......................................................... 57 800MHz BDA UNIT (80-301405) Outline Drawing ........................................................... 58 800MHz BDA UNIT (80-301405) Specification ................................................................ 59 800MHz BDA UNIT (80-301405) Photographs ................................................................ 60 3.6.4.1. Front View.................................................................................................................. 60 3.6.4.2. Underside view showing connectors ......................................................................... 60 3.6.4.3. Interior view ............................................................................................................... 61 800MHz BDA UNIT (80-301405) Major Sub-components................................................ 62 3.6.5.1. Bandpass Filter (02-011601) ..................................................................................... 62 3.6.5.2. Splitter/Combiner (05-002602) .................................................................................. 63 3.6.5.3. 30dB Directional Coupler (07-002907) ...................................................................... 63 3.6.5.4. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) ............................................... 64 Low Noise Amplifier (11-005902) .............................................................................. 64 3.6.5.5. 3.6.5.6. 5W Power Amplifier (12-018601)............................................................................... 65 3.6.5.7. 20W Power Amplifier (12-020501)............................................................................. 66 3.6.5.8. Automatic Gain Control.............................................................................................. 67 3.6.5.9. 24V Relay Dual Assembly (20-001602)..................................................................... 67 3.6.5.10. Dual Diode Assembly (94-100004) .......................................................................... 68 3.6.5.11. DC/DC Converter, 24V in, 12V 5A out (96-200024) ................................................ 68 IN-LINE BDA RACK MOUNT 80-301406................................................................................... 69 In-Line BDA Rack Mount System Diagrams ........................................................................... 71 4.1.1. Overall System Diagram....................................................................................................... 71 4.1.2. Combiners System Diagram................................................................................................. 72 In-Line BDA Rack Mount 80-301406 Specification................................................................. 73 In-Line BDA Rack Mount 80-301406 Illustrations ................................................................... 74 4.3.1. Rack 1 Front View ................................................................................................................ 74 4.3.2. Rack 1 Rear View............................................................................................................. 75 4.3.3. Rack 2 Front View ............................................................................................................ 76 4.3.4. Rack 2 Rear View............................................................................................................. 77 4.3.5. Rack 1 Top View .............................................................................................................. 78 4.3.6. Rack 2 Top View .............................................................................................................. 79 4.4. In-Line BDA Rack Mount 80-301401 List of Major Components ............................................ 80 4.5. Downlink Input Shelf 80-301407 ............................................................................................. 81 4.5.1. Downlink Input Shelf 80-301407 System Schematic............................................................ 81 4.5.2. Downlink Input Shelf 80-301407 Outline Drawing ................................................................ 82 4.5.3. Downlink Input Shelf 80-301407 Specification ................................................................. 83 4.5.4. Downlink Input Shelf 80-301407 Illustrations ................................................................... 83 4.5.4.1. Rear View .................................................................................................................. 83 4.5.5. Downlink Input Shelf 80-301407 Major Sub Components.................................................... 84 4.5.5.1. Bandpass Filter (02-010701) ..................................................................................... 84 4.5.5.2. Bandpass Filter 02-010901........................................................................................ 84 4.2. 4.3. 4.1. 4. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 3 of 148 4.6.5.1. 4.9.1. 4.9.2. 4.9.3. 4.9.4. 4.5.5.3. Crossband Splitter/Coupler 550/800MHz (07-004815).............................................. 85 4.5.5.4. Crossband Splitter/Coupler VHF/UHF (07-005754)................................................... 85 4.5.5.5. 30dB Bi-Directional Coupler (07-022005) .................................................................. 86 4.6. Downlink Output Shelf 80-301408 .......................................................................................... 87 4.6.1. Downlink Output Shelf 80-301408 System Schematic ........................................................ 87 4.6.2. Downlink Output Shelf 80-301408 Outline Drawing ............................................................ 88 4.6.3. Downlink Output Shelf 80-301408 Specification .............................................................. 89 4.6.4. Downlink Output Shelf 80-301408 Illustrations ................................................................ 89 4.6.4.1. Rear View .................................................................................................................. 89 4.6.5. Downlink Output Shelf 80-301408 Major Sub Components ............................................. 90 30dB Directional Coupler (07-018005) ...................................................................... 90 4.7. Uplink Input Shelf 80-301407.................................................................................................. 91 4.7.1. Uplink Input Shelf 80-301407 System Schematic ............................................................ 91 4.7.2. Uplink Input Shelf 80-301407 Outline Drawing ................................................................ 92 4.7.3. Uplink Input Shelf 80-301407 Specification...................................................................... 92 4.7.4. Uplink Input Shelf 80-301407 Illustrations........................................................................ 92 4.7.4.1. Rear View .................................................................................................................. 92 4.7.5. Uplink Input Shelf 80-301407 Major Sub Components .................................................... 93 4.8. Uplink Output Shelf 80-301407............................................................................................... 94 4.8.1. Uplink Output Shelf 80-301407 System Schematic ......................................................... 94 4.8.2. Uplink Output Shelf 80-301407 Outline Drawing.............................................................. 95 4.8.3. Uplink Output Shelf 80-301407 Specification................................................................... 95 4.8.4. Uplink Output Shelf 80-301407 Illustrations ..................................................................... 95 4.8.4.1. Rear View .................................................................................................................. 95 4.8.5. Uplink Output Shelf 80-301407 Major Sub Components ................................................. 96 4.9. VHF Amplifier Shelf 80-301409 .............................................................................................. 97 VHF Amplifier Shelf 80-301409 System Diagram ............................................................ 98 VHF Amplifier Shelf 80-301409 Outline Drawing ............................................................. 99 VHF Amplifier Shelf 80-301409 Specification ................................................................ 100 VHF Amplifier Shelf 80-301409 Illustrations................................................................... 100 4.9.4.1. Front View................................................................................................................ 100 4.9.4.2. Rear View ................................................................................................................ 101 VHF Amplifier Shelf 80-301409 Major Sub Components ............................................... 101 4.9.5.1. Bandpass Filter (01-002503) ................................................................................... 102 4.9.5.2. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) ............................................. 102 4.9.5.3. VHF Power Amplifier 5W (12-025602)..................................................................... 103 4.9.5.4. Automatic Gain Control............................................................................................ 104 4.9.5.5. 24V Relay Dual Assembly (20-001602)................................................................... 105 4.9.5.6. Dual Diode Assembly (94-100004) .......................................................................... 105 UHF Lowband Amplifier Shelf 80-301410 ......................................................................... 106 UHF Lowband Amplifier Shelf 80-301410 System Diagram ....................................... 107 UHF Lowband Amplifier Shelf 80-301410 Outline Drawing ........................................ 108 UHF Lowband Amplifier Shelf 80-301410 Specification ............................................. 109 UHF Lowband Amplifier Shelf 80-301410 Illustrations................................................ 109 4.10.4.1. Front View .............................................................................................................. 109 4.10.4.2. Rear View............................................................................................................... 110 UHF Lowband Amplifier Shelf 80-301410 Major Sub Components ............................ 110 4.10.5.1. 30dB Directional Coupler (07-002908)................................................................... 111 4.10.5.2. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) ........................................... 111 4.10.5.3. Low Noise Amplifier (11-005401)........................................................................... 112 4.10.5.4. TETRA Power Amplifier 20W (12-016301) ............................................................ 113 4.10.5.5. TETRA Power Amplifier 5W (12-021601) .............................................................. 114 3.10.5.6. Low Power Amplifier (1Watt) (12-021801) ............................................................. 115 4.10.5.7. Automatic Gain Control .......................................................................................... 116 4.10.5.8. 24V Relay Dual Assembly (20-001602) ................................................................. 117 4.10.5.9. 12V Relay Assembly 80-008909 ............................................................................ 117 4.10.5.10. Dual Diode Assembly (94-100004) ...................................................................... 118 4.10.5.11. DC/DC Converter, 24V in, 12V 5A out (96-200024) ............................................ 118 UHF Midband Amplifier Shelf 80-301410 .......................................................................... 119 4.10.1. 4.10.2. 4.10.3. 4.10.4. 4.10.5. 4.9.5. 4.11. 4.10. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 4 of 148 4.11.1. 4.11.2. 4.11.3. 4.11.4. 4.11.5. 4.12. 4.12.1. 4.12.2. 4.12.3. 4.12.4. 4.12.5. 4.13. 4.13.1. 4.13.2. 4.13.3. 4.13.4. 4.13.5. UHF Lowband Amplifier Shelf 80-301410 System Diagram ....................................... 120 UHF Midband Amplifier Shelf 80-301410 Outline Drawing ......................................... 120 UHF Midband Amplifier Shelf 80-301410 Specification .............................................. 120 UHF Lowband Amplifier Shelf 80-301410 Illustrations................................................ 120 4.11.4.1. Front View .............................................................................................................. 120 4.11.4.2. Rear View............................................................................................................... 121 UHF Midband Amplifier Shelf 80-301410 Major Sub Components............................. 121 UHF Highband Amplifier Shelf 80-301410......................................................................... 122 UHF Highband Amplifier Shelf 80-301410 System Diagram ...................................... 123 UHF Highband Amplifier Shelf 80-301410 Outline Drawing ....................................... 123 UHF Highband Amplifier Shelf 80-301410 Specification............................................. 123 UHF Highband Amplifier Shelf 80-301410 Illustrations............................................... 123 4.12.4.1. Front View .............................................................................................................. 123 4.12.4.2. Rear View............................................................................................................... 124 UHF Highband Amplifier Shelf 80-301410 Major Sub Components ........................... 124 800MHz Amplifier Shelf 80-301411 ................................................................................... 125 800MHz Amplifier Shelf 80-301411 System Diagram................................................. 126 800MHz Amplifier Shelf 80-301411 Outline Drawing.................................................. 127 800MHz Amplifier Shelf 80-301411 Specification ....................................................... 128 800MHz Amplifier Shelf 80-301411 Illustrations ......................................................... 128 4.13.4.1. Front View .............................................................................................................. 128 4.13.4.2. Rear View............................................................................................................... 129 800MHz Amplifier Shelf 80-301411 Major Sub Components...................................... 129 4.13.5.1. Bandpass Filter (02-011601).................................................................................. 130 4.13.5.2. Splitter/Combiner (05-002602)............................................................................... 130 4.13.5.3. 30dB Directional Coupler (07-002907)................................................................... 131 4.13.5.4. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) ........................................... 131 Low Noise Amplifier (11-005902)........................................................................... 132 4.13.5.5. 4.13.5.6. 5W Power Amplifier (12-018601) ........................................................................... 133 4.13.5.7. 20W Power Amplifier (12-020501) ......................................................................... 134 4.13.5.8. Automatic Gain Control .......................................................................................... 135 4.13.5.9. 24V Relay Dual Assembly (20-001602) ................................................................. 136 4.13.5.10. Dual Diode Assembly (94-100004) ...................................................................... 136 4.13.5.11. DC/DC Converter, 24V in, 12V 5A out (96-200024) ............................................ 136 PSU 96-300064 ................................................................................................................ 137 4.14 5. INSTALLATION........................................................................................................................ 138 5.1 Installation Record ................................................................................................................ 138 5.2 General Remarks.................................................................................................................. 138 5.3 Electrical Connections .......................................................................................................... 138 5.4 RF Connections .................................................................................................................... 138 5.5 Optical Connections.............................................................................................................. 138 5.6 Commissioning ..................................................................................................................... 139 6. 6.1 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.1.6 6.1.7 MAINTENANCE ....................................................................................................................... 140 Fault Finding ......................................................................................................................... 140 Quick Fault Checklist...................................................................................................... 140 Fault Isolation ................................................................................................................. 140 Downlink......................................................................................................................... 140 Uplink ............................................................................................................................. 141 Checking service ............................................................................................................ 141 Fault repair ..................................................................................................................... 141 Service Support.............................................................................................................. 141 Tools & Test Equipment........................................................................................................ 142 Care of Modules.................................................................................................................... 142 General Comments ........................................................................................................ 142 Module Removal (LNAs, general procedure) ................................................................. 142 Module Replacement (general) ...................................................................................... 142 Power Amplifiers ............................................................................................................ 142 Low Power Amplifier Replacement ................................................................................ 143 6.3.1 6.3.2 6.3.3 6.3.4 6.3.5 6.2 6.3 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 5 of 148 6.3.6 Module Transportation ................................................................................................... 143 APPENDIX A ..................................................................................................................................... 144 Glossary of Terms used in this document ......................................................................... 144 Key to Drawing Symbols used in this document................................................................ 145 EC Declaration of Conformity ............................................................................................ 146 Amendment List Record Sheet.......................................................................................... 147 A.1. A.2. A.3. A.4. APPENDIX B ..................................................................................................................................... 148 INITIAL EQUIPMENT SET-UP CALCULATIONS ............................................................. 148 B.1. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 6 of 148 1. INTRODUCTION 1.1. Scope and Purpose of Document This handbook is for use solely with the equipment identified by the Axell Wireless Limited (AWL) Part Number shown on the front cover. It is not to be used with any other equipment unless specifically authorised by AWL. This is a controlled release document and, as such, becomes a part of the Axell Wireless Total Quality Management System. Alterations and modification may therefore only be performed by Axell Wireless. AWL recommends that the installer of this equipment familiarise themselves with the safety and installation procedures contained within this document before installation commences. The purpose of this handbook is to provide the user/maintainer with sufficient information to service and repair the equipment to the level agreed. Maintenance and adjustments to any deeper level must be performed by AWL, normally at the companys repair facility in Chesham, England. This handbook has been prepared in accordance with BS 4884, and AWLs Quality procedures, which maintain the companys registration to BS EN ISO 9001:2000 and to the R&TTE Directive of the European Parliament. Copies of the relevant certificates and the company Quality Manual can be supplied on application to the Quality Manager. This document fulfils the relevant requirements of Article 6 of the R&TTE Directive. 1.2. Limitation of Liability Notice This manual is written for the use of technically competent operators/service persons. No liability is accepted by AWL for use or misuse of this manual, the information contained therein, or the consequences of any actions resulting from the use of the said information, including, but not limited to, descriptive, procedural, typographical, arithmetical, or listing errors. Furthermore, AWL does not warrant the absolute accuracy of the information contained within this manual, or its completeness, fitness for purpose, or scope. AWL has a policy of continuous product development and enhancement, and as such, reserves the right to amend, alter, update and generally change the contents, appearance and pertinence of this document without notice. All AWL products carry a twelve month warranty from date of shipment. The warranty is expressly on a return to base repair or exchange basis and the warranty cover does not extend to on-site repair or complete unit exchange. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 7 of 148 2. SAFETY CONSIDERATIONS 2.1. Earthing of Equipment Equipment supplied from the mains must be connected to grounded outlets and earthed in conformity with appropriate local, national and international electricity supply and safety regulations. 2.2. Electric Shock Hazard The risk of electrical shocks due to faulty mains driven power supplies whilst potentially ever present in any electrical equipment, would be minimised by adherence to good installation practice and thorough testing at the following stages:
a) b) c) Original assembly. Commissioning.. Regular intervals, thereafter. All test equipment must be in good working order prior to its use. High current power supplies can be dangerous because of the possibility of substantial arcing. Always switch off during disconnection and reconnection. 2.3. RF Radiation Hazard RF radiation, (especially at UHF frequencies) arising from transmitter outputs connected to AWLs equipment, must be considered a safety hazard. This condition might only occur in the event of cable disconnection, or because a spare output has been left un-terminated. Either of these conditions would impair the systems efficiency. No investigation should be carried out until all RF power sources have been removed. This would always be a wise precaution, despite the severe mismatch between the impedance of an N type connector at 50, and that of free space at 377, which would severely mitigate against the efficient radiation of RF power. Radio frequency burns could also be a hazard, if any RF power carrying components were to be carelessly touched!
Antenna positions should be chosen to comply with requirements (both local & statutory) regarding exposure of personnel to RF radiation. When connected to an antenna, the unit is capable of producing RF field strengths, which may exceed guideline safe values especially if used with antennas having appreciable gain. In this regard the use of directional antennas with backscreens and a strict site rule that personnel must remain behind the screen while the RF power is on, is strongly recommended. Where the equipment is used near power lines or in association with temporary masts not having lightning protection, the use of a safety earth connected to the case-earthing bolt is strongly advised. 2.4. Lifting and other Health and Safety Recommendations Certain items of AWL equipment are heavy and care should be taken when lifting them by hand. Ensure that a suitable number of personnel, appropriate lifting apparatus and appropriate personal protective equipment is used especially when installing Cell Enhancers above ground e.g. on a mast or pole. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 8 of 148 2.5. Chemical Hazard Beryllium Oxide, also known as Beryllium Monoxide, or Thermalox, is sometimes used in devices within equipment produced by Axell Wireless Ltd. Beryllium oxide dust can be toxic if inhaled, leading to chronic respiratory problems. It is harmless if ingested or by contact. Products that contain beryllium are load terminations (dummy loads) and some power amplifiers. These products can be identified by a yellow and black skull and crossbones danger symbol (shown above). They are marked as hazardous in line with international regulations, but pose no threat under normal circumstances. Only if a component containing beryllium oxide has suffered catastrophic failure, or exploded, will there be any danger of the formation of dust. Any dust that has been created will be contained within the equipment module as long as the module remains sealed. For this reason, any module carrying the yellow and black danger sign should not be opened. If the equipment is suspected of failure, or is at the end of its life-cycle, it must be returned to Axell Wireless Ltd. for disposal. To return such equipment, please contact the Quality Department, who will give you a Returned Materials Authorisation (RMA) number. Please quote this number on the packing documents, and on all correspondence relating to the shipment. PolyTetraFluoroEthylene, (P.T.F.E.) and P.T.F.E. Composite Materials Many modules/components in AWL equipment contain P.T.F.E. as part of the RF insulation barrier. This material should never be heated to the point where smoke or fumes are evolved. Any person feeling drowsy after coming into contact with P.T.F.E. especially dust or fumes should seek medical attention. 2.6. Laser safety General good working practices adapted from EN60825-2: 2004/ EC 60825-2:2004 Do not stare with unprotected eyes or with any unapproved optical device at the fibre ends or connector faces or point them at other people, Use only approved filtered or attenuating viewing aids. Any single or multiple fibre end or ends found not to be terminated (for example, matched, spliced) shall be individually or collectively covered when not being worked on. They shall not be readily visible and sharp ends shall not be exposed. When using test cords, the optical power source shall be the last connected and the first disconnected; use only approved methods for cleaning and preparing optical fibres and optical connectors. Always keep optical connectors covered to avoid physical damage and do not allow any dirt/foreign material ingress on the optical connector bulkheads. The optical fibre jumper cable maximum bend radius is 3cm; any smaller radii may result in optical cable breakage or excessive transmission losses. Caution: The FO units are NOT weather proof. 2.7. Emergency Contact Numbers The AWL Quality Department can be contacted on:
Telephone Fax. e-mail
+44 (0)1494 777000
+44 (0)1494 777002 qa@axellwireless.com Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 9 of 148 3. In-Line BDA Wall Mount 80-301401 The wall mount In Line BDA consists of 4 wall mount enclosures:
80-301402 the Combiner unit. 80-301403 which houses the VHF and UHF Low Band amplification modules. 80-301404 which houses the Mid and High band UHF amplification modules. 80-301405 which houses the 800MHz amplification modules. Downlink The downlink signal is received from the leaky feeder and enters the Combiner 80-301402 where by means of crossband splitter/couplers it is split into VHF, UHF and 800MHz paths, the UHF path is further split into Low, Middle and Highband paths. The VHF and UHF Lowband paths then leave Combiner 80-301402 and enters VHF/UHF BDA Unit 80-301403, The UHF Mid and Highband paths leaves Combiner 80-301402 and enters UHF BDA Unit 80-301404 The 800MHz path leaves Combiner 80-301402 and enters 800MHz BDA Unit 80-301405 After being amplified the Downlink signals from the three BDA units then re-enter Splitter/Combiner 80-301402 where they are combined into a single path and fed into the leaky feeder. Uplink The Uplink signal signal is received from the leaky feeder and enters the Splitter/Combiner 80-301402 where by means of crossband splitter/couplers it is split into VHF, UHF and 800MHz paths, the UHF path is further split into Low, Middle and Highband paths. The VHF and UHF Low band paths then leave Splitter/Combiner 80-301402 and enters VHF/UHF BDA Unit 80-301403, The UHF Mid and Highband paths leaves Splitter/Combiner 80-301402 and enters UHF BDA Unit 80-
301404 The 800MHz path leaves Splitter/Combiner 80-301402 and enters 800MHz BDA Unit 80-301405 After being amplified the Uplink signals from the three BDA units then re-enter Splitter/Combiner 80-
301402 where they are combined into a single path and fed into the leaky feeder. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 10 of 148 3.1. In-Line BDA Wall Mount 80-301401 Specification ELECTRICAL SPECIFICATION Frequency Range VHF UHF Low UHF Mid UHF High 800MHz Downlink 154.0 to 161.5 MHz Uplink 155.5 to 161.0 MHz Downlink 460.4 to 460.5 MHz Uplink 465.4 to 465.5 MHz Downlink 482.5 to 483.8 MHz Uplink 485.7 to 486.8 MHz Downlink 507.0 to 507.3 MHz Uplink 510.0 to 510.3 MHz Downlink 856.0 to 861.0 MHz Uplink 811.0 to 816.0 MHz Passband Ripple 1.5dB VHF 5 Watts Downlink Power Amplifier Uplink Power Amplifier UHF Low 20 Watts UHF Mid 20 Watts UHF High 20 Watts 800MHz 40 Watts VHF 5 Watts UHF Low 5 Watts UHF Mid 5 Watts UHF High 5 Watts 800MHz 5 Watts Gain 30dB Gain Adjust 0 - 30dB in 2dB Steps Sampling Ports 30dB VSWR 1.5:1 Impedance 50 Ohms Power Supply 24V DC Power Consumption < 800 Watts Environmental/Mechanical Specification Mechanical Dimensions
(excludes handles and connectors) IP65 Wall Mount Qty. 4 off, 620mm x 620mm x 250mm
(24 x 24 x 10 approx) RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per band path Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 11 of 148 3.1.1. In-Line BDA Wall Mount 80-301401 Overall system Diagram Drawing Number 80-301481 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 12 of 148 3.2. In-Line BDA Wall Mount 80-301401 List of Major Components Section Component Component Part Description 3.3. 3.4. 3.5. 3.6. Part 80-301402 80-301403 80-301404 80-301405 Combiner VHF/UHF BDA Unit UHF BDA Unit 800MHz BDA Unit Qty Per Assembly 1 1 1 1 3.3. Combiner 80-301402 Splitter/Combiner 80-301402 is the main Splitter/Combiner unit. Signals are received from the leaky feeder and are then split into their various separate paths before being amplified by external band specific amplifiers and then the signals are re-combined for onward transmission via the leaky feeder The unit is housed in a wall mount case 600x600x250mm (24 x 24 x 10 approx) Downlink signals are received at the port labelled DOWNLINK INPUT (Annotated AA in the picture in section 3.3.4.2.) and there is a 30dB test port labelled DOWNLINK INPUT TEST PORT (Z in section 3.3.4.2.). Ports labelled 1 to 5 (P to T in section 3.3.4.2.) are the Downlink outputs to the amplification stages and ports labelled A to E (A to E in section 3.3.4.2.) are the Downlink inputs from the amplification stages. These outputs and inputs are further described below. The Downlink signal leaves the Splitter/Combiner for the leaky feeder via the port labelled DOWNLINK OUTPUT (L in section 3.3.4.2.) and there is a 30dB test port labelled DOWNLINK OUTPUT TEST PORT (K in section 3.3.4.2.). Uplink signals are received at the port labelled UPLINK INPUT (N in section 3.3.4.2.) and there is a 30dB test port labelled UPLINK INPUT TEST PORT (M in section 3.3.4.2.). Ports labelled F to J (F to J in section 3.3.4.2.) are the Uplink outputs to the amplification stages and ports labelled 6 to 10 (U to Y in section 3.3.4.2.) are the Uplink inputs from the amplification stages. These outputs and inputs are further described below. The Uplink signal leaves the Splitter/Combiner for the leaky feeder via the port labelled UPLINK OUTPUT (CC in section 3.3.4.2.) and there is a 30dB test port labelled UPLINK OUTPUT TEST PORT (BB in section 3.3.4.2.). Splitter/Combiner 80-301402 also incorporates bandpass filtering for the three UHF bands, the filters are placed in the RF path before the outputs to and after the inputs from the external amplification stages Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 13 of 148 3.3.1. Combiner 80-301402 System Diagram Drawing Number 80-301482 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 14 of 148 3.3.2. Combiner 80-301402 Outline Drawing Drawing Number 80-301492 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 15 of 148 3.3.3. Combiner 80-301402 Specification Downlink PARAMETER SPECIFICATION Insertion Loss from Downlink Input port to port indicated VHF Band to port 1 < 1.0dB at 154.0 161.3MHz UHF Low Band to port 2 < 3.5dB at 460.4 460.5MHz UHF Mid Band to port 3 < 3.5dB at 482.5 -483.8MHz UHF High Band to port 4 < 4.0dB at 507.0 507.3MHz 800MHz Band to port 5 < 1.0dB at 856.0 861.0MHz Insertion Loss from port indicated to Downlink Input test port VHF Band 30dB at 154.0 161.3MHz UHF Low Band 30dB at 460.4 460.5MHz UHF Mid Band 30dB at 482.5 483.8MHz UHF High Band 30dB at 507.0 507.3MHz 800MHz Band 30dB at 856.0 861.0MHz Insertion Loss from port indicated to Downlink Output VHF Band from port A < 1.0dB at 154.0 161.3MHz UHF Low Band from port B < 3.5dB at 460.4 460.5MHz UHF Mid Band from port C < 3.5dB at 482.5 -483.8MHz UHF High Band from port D < 4.0dB at 507.0 507.3MHz 800MHz Band from port E < 1.0dB at 856.0 861.0MHz Insertion Loss from port indicated to Downlink Output Test port VHF Band from port A 31.0dB at 154.0 161.3MHz UHF Low Band from port B 33dB at 460.4 460.5MHz UHF Mid Band from port C 33dB at 482.5 483.8MHz UHF High Band from port D 33dB at 507.0 507.3MHz 800MHz Band from port E 31dB at 856.0 861.0MHz Uplink PARAMETER SPECIFICATION Insertion Loss from from Uplink Input port to port indicated VHF Band to port F < 1.0dB at 155.7 160.8MHz UHF Low Band to port G < 3.5dB at 465.4 465.5MHz UHF Mid Band to port H < 3.5dB at 485.7 -486.8MHz UHF High Band to port I < 4.0dB at 510.0 510.3MHz 800MHz Band to port J < 1.0dB at 811.0 816.0MHz Insertion Loss from port indicated to Uplink Input test port VHF Band 31dB at 155.7 160.8MHz UHF Low Band 33dB at 465.4 465.5MHz UHF Mid Band 33dB at 485.7 486.8MHz UHF High Band 33dB at 510.0 510.3MHz 800MHz Band 31dB at 811.0 816.0MHz Insertion Loss from port indicated to Uplink Output VHF Band from port 6 < 1.0dB at 155.7 160.8MHz UHF Low Band from port 7 < 3.5dB at 465.4 465.5MHz UHF Mid Band from port 8 < 3.5dB at 485.7 -486.8MHz UHF High Band from port 9 < 4.0dB at 510.0 510.3MHz 800MHz Band from port 10 < 1.0dB at 811.0 816.0MHz Insertion Loss from port indicated to Uplink Output Test port VHF Band from port 6 31dB at 155.7 160.8MHz UHF Low Band from port 7 33dB at 465.4 465.5MHz UHF Mid Band from port 8 33dB at 485.7 486.8MHz UHF High Band from port 9 33dB at 510.0 510.3MHz 800MHz Band from port 10 31dB at 811.0 816.0MHz Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 16 of 148 Environmental/Mechanical Specification PARAMETER SPECIFICATION Mechanical IP65 Wall Mount RF connectors N type female Dimensions
(excludes handles and connectors 620mm x 620mm x 250mm
(24 x 24 x 10 approx) 3.3.4. Combiner 80-301402 Photographs 3.3.4.1. Front View Note: All connectors are on the underside A Lockable Door Handles Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 17 of 148 3.3.4.2. Underside view showing RF connectors Port A. Downlink VHF Input from VHF/UHF BDA Unit 80-301403 Port B. Downlink UHF Lowband Input from VHF/UHF BDA Unit 80-301403 Port C. Downlink UHF Midband Input from UHF BDA Unit 80-301404 Port D. Downlink UHF Highband Input from UHF BDA Unit 80-301404 Port E. Downlink 800MHz Input from 800MHz BDA Unit 80-301405 Port F. Uplink VHF Output to VHF/UHF BDA Unit 80-301403 Port G. Uplink UHF Lowband Output to VHF/UHF BDA Unit 80-301403 Port H. Uplink UHF Midband Output to UHF BDA Unit 80-301404 Port I. Uplink UHF Highband Output to UHF BDA Unit 80-301404 Port J. Uplink 800MHz Output to 800MHz BDA Unit 80-301405 Downlink Output Test Port (30dB Tap) Downlink Output to Radiating Cable A B C D E F G H I J K L M Uplink Input Test Port (30dB Tap) N Uplink Input from Radiating Cable O P Q R S T U V W Port 8. Uplink UHF Midband Input from UHF BDA Unit 80-301404 Port 9. Uplink UHF Highband Input from UHF BDA Unit 80-301404 X Port 10. Uplink 800MHz Input from 800MHz BDA Unit 80-301405 Y Z Downlink Input Test Port (30dB Tap) AA Downlink Input from Radiating Cable BB Uplink Output Test Port (30dB Tap) CC Uplink Output to Radiating Cable DD Case feet Earth Connection Port 1. Downlink VHF Output to VHF/UHF BDA Unit 80-301403 Port 2. Downlink UHF Lowband Output to VHF/UHF BDA Unit 80-301403 Port 3. Downlink UHF Midband Output to UHF BDA Unit 80-301404 Port 4. Downlink UHF Highband Output to UHF BDA Unit 80-301404 Port 5. Downlink 800MHz Output to 800MHz BDA Unit 80-301405 Port 6. Uplink VHF Input from VHF/UHF BDA Unit 80-301403 Port 7. Uplink UHF Lowband Input from VHF/UHF BDA Unit 80-301403 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 18 of 148 3.3.4.3. Interior view Downlink Input 30dB Bi-Directional Coupler 07-022005 A B Downlink Input Crossband Splitter/Coupler 07-004815 C Downlink Input Crossband Splitter/Coupler 07-005754 D Downlink Input UHF Lowband Bandpass Filter 02-010701 Downlink Input UHF Midband Bandpass Filter 02-010701 E F Downlink Input UHF Highband Bandpass Filter 02-010901 G Downlink Output UHF Lowband Bandpass Filter 02-010701 H Downlink Output UHF Midband Bandpass Filter 02-010701 Downlink Output UHF Highband Bandpass Filter 02-010901 I Downlink Output Crossband Splitter/Coupler 07-005754 J K Downlink Output Crossband Splitter/Coupler 07-004815 L Downlink Output 30dB Coupler 07-018005 M Uplink Input 30dB Bi-Directional Coupler 07-022005 N Uplink Input Crossband Splitter/Coupler 07-004815 O Uplink Input Crossband Splitter/Coupler 07-005754 P Uplink Input UHF Lowband Bandpass Filter 02-010701 Q Uplink Input UHF Midband Bandpass Filter 02-010701 R Uplink Input UHF Highband Bandpass Filter 02-010901 S T U Uplink Output UHF Highband Bandpass Filter 02-010901 V Uplink Output Crossband Splitter/Coupler 07-005754 W Uplink Output Crossband Splitter/Coupler 07-004815 Uplink Output 30dB Bi-Directional Coupler 07-022005 X Uplink Output UHF Lowband Bandpass Filter 02-010701 Uplink Output UHF Midband Bandpass Filter 02-01070 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 19 of 148 3.3.5. Combiner 80-301402 Major Sub-Components Section Component Component Part Description 3.3.5.1. 3.3.5.2. 3.3.5.3. 3.3.5.4. 3.3.5.5. 3.3.5.6. Part 02-010701 02-010901 07-004815 07-005754 07-018005 07-022005 Bandpass Filter Bandpass Filter Crossband Splitter/Coupler 550/800MHz Crossband Splitter/Coupler VHF/UHF 30dB Directional Coupler 30dB Bi-Directional Coupler Qty Per Assembly 8 4 4 4 1 3 3.3.5.1. Bandpass Filter 02-010701 The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50 load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. 02-010701 Specification PARAMETER SPECIFICATION Passband Frequency UHF Low UHF Mid Bandwidth Downlink 460.4 to 460.5 MHz Uplink 465.4 to 465.5 MHz Downlink 482.5 to 483.8 MHz Uplink 485.7 to 486.8 MHz UHF Low 0.1 MHz UHF Mid 1.3 MHz Number of sections 5 Insertion loss 2.4 dB (typical) VSWR better than 1.2:1 Connectors SMA Power Handling 100W max operation -20C to +60C storage -40C to +70C Weight 3 kg (typical) Temperature range 3.3.5.2. Bandpass Filter 02-010901 Bandpass Filter 02-010901 is a multi-section design with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of helical & combline design respectively, and are carefully aligned during manufacture loss, VSWR and intermodulation characteristics of the unit. The body and tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50 load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. to optimise in order insertion the Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 20 of 148 02-010901 specification SPECIFICATION Passband Frequency Bandwidth PARAMETER Downlink 507.0 to 507.3MHz Uplink 510.0 to 510.3MHz Uplink 0.3 MHz Downlink 0.3 MHz Insertion Loss 2.9 dB (typical) Power Rating 50W Impedance 50 VSWR Better than 1.2:1 Connectors SMA Weight 3Kg (approximately) 3.3.5.3. Crossband Splitter/Coupler 550/800MHz (07-004815) The purpose of Crossband Splitter/Coupler (07-004815) is to split or combine RF signals from different parts of the frequency spectrum. It is a 3 port device comprising two filters, one a low pass, the other a high pass, connected to a common input/output. The couplers are housed in a machined aluminium casing having a centre screening wall between the filter sections and lid secured by screws at frequent intervals over its perimeter to obtain a tight seal and to ensure linearity and stability of response. 07-004815 Specification Parameter Passband Frequencies Insertion loss Isolation between Bands VSWR Impedance Power rating operation storage RF Connectors Weight Temperature range Low Pass Port 380 to 550MHz High Pass Port 800 to 960MHz
<0.5dB
>50dB
<0.5dB
>50dB 1.3:1 50 ohm 50W
-20C to +60C
-40C to +70C SMA (female)
<1kg 3.3.5.4. Crossband Splitter/Coupler VHF/UHF (07-005754) The purpose of Crossband Splitter/Coupler (07-005754) is to split or combine RF signals from different parts of the frequency spectrum. It is a 3 port device comprising two filters, one a low pass, the other a high pass, connected to a common input/output. The couplers are housed in a machined aluminium casing having a centre screening wall between the filter sections and lid secured by screws at frequent intervals over its perimeter to obtain a tight seal and to ensure linearity and stability of response. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 21 of 148 07-005754 Specification Parameter Passband Frequencies Insertion loss Return loss Isolation between Bands Impedance Power rating operation storage RF Connectors Weight Temperature range Low Pass Port 70 to 175 MHz High Pass Port 380 to 500 MHz
<0.5dB
<0.5dB
>14dB typical
>14dB typical
>60dB
>60dB 50 ohm 50W
-20C to +60C
-40C to +70C SMA (female)
<1kg 3.3.5.5. 30dB Directional Coupler (07-018005) The purpose of these couplers is to tap off known portions (in this case 30dB) of RF signal from transmission lines and to combine them, for example though splitter units for different purposes
(alarms/monitoring etc.), whilst maintaining an accurate 50 load to all ports/interfaces throughout the specified frequency range. 07-018005 is a Uni-Directional device and as such will only couple 30dB of signal in one direction. 07-018005 Specification PARAMETER SPECIFICATION Frequency Range 70 MHz - 1000MHz Mainline Insertion Loss <0.5 Coupling Loss 30 dB VSWR Mainline Better than 1.3:1 Impedance 50 Power Handling (CW) 100W Outline (W x D x H) 176mm x 104mm x 24mm (ex. connectors) Connectors N (female) on all ports Case Material Aluminium Finish Iridite NCP Temperature range operation -20C to +60C storage -40C to +70C Ingress Protection IP54 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 22 of 148 3.3.5.6. 30dB Bi-Directional Coupler (07-022005) The purpose of these couplers is to tap off known portions (in this case 30dB) of RF signal from transmission lines and to combine them, for example though splitter units for different purposes
(alarms/monitoring etc.), whilst maintaining an accurate 50 load to all ports/interfaces throughout the specified frequency range. 07-022005 is a Bi-Directional device and as such will couple 30dB of signal whichever direction the signal is traveling. 07-022005 Specification PARAMETER SPECIFICATION Frequency Range 100kHz 2.7GHz Mainline Insertion Loss < 1.0 dB Coupling Loss 30 dB Coupling Loss Tolerance +/-2.0 dB VSWR Mainline Better than 1.4:1 Impedance 50 Power Handling (CW) 5W Outline (W x D x H) 44.5mm x 41mm x 27mm (ex. connectors) Connectors SMA (female) on all ports Case Material Aluminium Finish Iridite NCP Operating Temperature -20 to +55C Ingress Protection IP54 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 23 of 148 3.4. VHF/UHF BDA Unit (80-301403) VHF/UHF BDA Unit (80-301403) provides the amplification stages for the VHF and UHF Lowband paths, The unit is housed in a wall mount case 600x600x250mm (24 x 24 x 10 approx). The Downlink VHF signal is received at the port labelled VHF D/L INPUT (Annotated A in the picture in section 3.4.4.2.). The Downlink VHF path passes through a bandpass filter to remove out of band noise and then a switched attenuator providing 0 to 30 dB of RF signal attenuation. After leaving the attenuator the VHF Downlink signal passes through a 5W amplification stage, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. After leaving the Amplification/AGC stage the VHF Downlink signal passes through a second bandpass filter and exits the BDA via the port labelled VHF D/L OUTPUT ( B in section 3.4.4.2.). The Uplink VHF Signal is received at the port labelled VHF U/L INPUT (C in section 3.4.4.2.). The VHF Uplink path passes through a bandpass filter to remove out of band noise and then a switched attenuator providing 0 to 30 dB of RF signal attenuation. After leaving the attenuator the VHF Uplink signal passes through a 5W amplification stage, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. After leaving the Amplification/AGC stage the VHF Uplink signal passes through a second bandpass filter and exits the BDA via the port labelled VHF U/L OUTPUT (D in section 3.4.4.2.). The Downlink UHF Lowband signal is received at the port labelled UHF LOW D/L INPUT (E in section 3.4.4.2.). The signal passes through a switched attenuator providing 0 to 30 dB of RF signal attenuation and then into the amplification stage. The Downlink UHF Lowband amplification stage is provided by tow amplifier modules, the first is a 15dB gain Low Power Amplifier and the second is a 20W, 23dB gain power amplifier. Both amplification stages are straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The input to the AGC detector is provided by the output of a 30dB tap. After leaving the Amplification/AGC stage the Downlink UHF Lowband signal exits the BDA via the port labelled UHF LOW D/L OUTPUT (F in section 3.4.4.2.). The Uplink UHF Lowband signal is received at the port labelled UHF LOW U/L INPUT (G in section 3.4.4.2.). The signal passes into a Low Noise Amplifier providing 15dB of gain and then into a switched attenuator providing 0 to 30 dB of RF signal attenuation. After the attenuator the Uplink UHF Lowband signal passes into a second stage of amplification provided by a 5W, 30dB gain Power Amplifier, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The Uplink UHF Lowband signal exits the BDA via the port labelled UHF LOW U/L OUTPUT (H in section 3.4.4.2.). VHF/UHF BDA Unit (80-301403) is provided with a 24V DC input to power the amplifier modules within and those amplifier modules are configured to provide alarm status reports. Separate alarm contact outputs are provided for the VHF and the UHF Lowband paths. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 24 of 148 3.4.1. VHF/UHF BDA Unit (80-301403) System Diagram Drawing Number 80-301483 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 25 of 148 3.4.2. VHF/UHF BDA Unit (80-301403) Outline Drawing Drawing Number 80-301493 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 26 of 148 3.4.3. VHF/UHF BDA Unit(80-301403) Specification Parameter Specification Downlink Downlink Passband VHF 154.0 to 161.5MHz UHF Lowband 460.4 to 460.5MHz Maximun gain VHF 30dB UHF Lowband 30dB Gain Adjustment VHF 0 to 30dB in 2dB steps UHF Lowband 0 to 30dB in 2dB steps 1dB Compression Point VHF > +34.0dBm
(P1dB) UHF Lowband > +42.5dBm ALC setting 3rd Order Intercept point Uplink VHF 1dB below P1dB UHF Lowband 1dB below P1dB VHF > +45.0dBm UHF Lowband > +53.5dBm Uplink Passband VHF 155.5 161.0MHz UHF Lowband 465.4 465.5MHz Maximun gain VHF 30dB UHF Lowband 30dB Gain Adjustment VHF 0 to 30dB in 2dB steps UHF Lowband 0 to 30dB in 2dB steps 1dB Compression Point VHF > +34.0dBm
(P1dB) UHF Lowband > +36.5dBm ALC setting 3rd Order Intercept point Noise Figure VHF +27dBm UHF Lowband +27dBm VHF > +45.0dBm UHF Lowband > +48.0dBm VHF < 10dB UHF Lowband < 3.0dB Environmental/Mechanical Specification Mechanical Dimensions
(excludes handles and connectors) IP65 Wall Mount 620mm x 620mm x 250mm
(24 x 24 x 10 approx) RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per band path Power Supply 24V DC Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 27 of 148 3.4.4. VHF/UHF BDA Unit(80-301403) Photographs 3.4.4.1. Front View Note: All connectors (RF, DC and Alarms) are on the underside Red LED VHF Downlink Alarm A Green LED Power On B C Red LED VHF Uplink Alarm D Red LED UHF Lowband Downlink Alarm E F Red LED UHF Lowband Uplink Alarm Lockable Door Handles Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 28 of 148 3.4.4.2. Underside view showing connectors VHF Downlink Input from port 1 on Combiner 80-301402 VHF Downlink Output to port A on Combiner 80-301402 VHF Uplink Input from port F on Combiner 80-301402 VHF Uplink Output to port 6 on Combiner 80-301402 UHF Lowband Downlink Input from port 2 on Combiner 80-301402 UHF Lowband Downlink Output to port B on Combiner 80-301402 A B C D E F G UHF Lowband Uplink Input from port G on Combiner 80-301402 H UHF Lowband Uplink Output to port 7 on Combiner 80-301402 I J K L 24V DC Input VHF Band Alarm Output UHF Lowband Alarm Output Earth Connection Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 29 of 148 3.4.4.3. Interior view VHF Downlink Filters 01-002503 (Input filter below, Output filter above) VHF Downlink Switched Attenuator 10-000701 VHF Downlink AGC Attenuator 17-001201 VHF Downlink 5W Power Amplifier 12-025602 VHF Downlink AGC Detector 17-001101 VHF Uplink Filters 01-002503 (Input filter below, Output filter above) VHF Uplink Switched Attenuator 10-000701 VHF Uplink AGC Attenuator 17-001201 VHF Uplink 5W Power Amplifier 12-025602 VHF Uplink AGC Detector 17-001101 UHF Lowband Downlink Switched Attenuator 10-000701 UHF Lowband Downlink AGC Attenuator 17-001201 A B C D E F G H I J K L M UHF Lowband Downlink Low Power Amplifier 12-021801 N UHF Lowband Downlink 20W Power Amplifier 12-016301 O UHF Lowband Downlink 30dB Directional Coupler 07-002908 P Q UHF Lowband Uplink Low Noise Amplifier 11-005401 R UHF Lowband Uplink Switched Attenuator 10-000701 S T U UHF Lowband Uplink AGC Detector 17-001101 V W X Y Z AA Main DC 10A Circuit Breaker 96-920021 DC/DC Converter 96-200024 24V Dual Relay Assembly (VHF Alarm output) 20-001602 24V Dual Relay Assembly (UHF Lowband output) 20-001602 24V Relay Assembly 80-008902 Dual Diode Assembly 94-100004 UHF Lowband Uplink AGC Attenuator 17-001201 UHF Lowband Uplink 5W Power Amplifier 12-021601 UHF Lowband Downlink AGC Detector 17-001105 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 30 of 148 3.4.5. VHF/UHF BDA Unit(80-301403) Major Sub-components Section Component Component Part Description Part 3.4.5.1. 3.4.5.2. 3.4.5.3. 3.4.5.4. 3.4.5.5. 3.4.5.6. 3.4.5.7. 3.4.5.8. 3.4.5.9. 01-002503 07-002908 10-000701 11-005401 12-016301 12-021601 12-021801 12-025602 17-001101 17-001105 17-001201 3.4.5.10. 20-001602 3.4.5.11. 80-008902 3.4.5.12. 94-100004 3.4.5.13. 96-200024 Bandpass Filter 30dB Directional Coupler Switched Attenuator 0.25Watt, 0 - 30dB Low Noise Amplifier TETRA Power Amplifier 20W TETRA Power Amplifier 5W Low Power Amplifier VHF Power Amplifier 5W AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly 24V Dual Relay Assembly 24V Relay Assembly Dual Diode Assembly DC/DC Converter Qty Per Assembly 4 1 4 1 1 1 1 2 3 1 4 2 1 1 1 3.4.5.1. Bandpass Filter (01-002503) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of helical design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50 load at the input and output ports. Being passive devices, the bandpass filters have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 01-002503 Specification SPECIFICATION PARAMETER Bandpass Frequency Downlink 154.0 MHz to 161.5 MHz Uplink 155.5 MHz to 161.0 MHz Bandwidth Downlink 7.5MHz Uplink 5.5MHz No. of sections 6 Insertion loss 1.5dB VSWR Better than 1.2:1 Connectors SMA Temperature range Power handling 100W maximum
-20C to +60C store -40C to +70C operational Weight 3 kg Size 384 x 82.5 x 56.4mm Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 31 of 148 3.4.5.2. 30dB Directional Coupler (07-002908) The purpose of these couplers is to tap off known portions of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50 load to all ports/interfaces throughout the specified frequency range. They are known as directional couplers as they couple power from the RF mainline in one direction only. Directional Coupler 07-002908 is configured to tap off 30dB. 07-002908 Specification PARAMETER SPECIFICATION Frequency range 50 - 1000MHz Insertion loss <0.3dB Coupling level 30dB Rejection N/A Weight <200gms Temperature range Connectors N type, female
-20C to +60C
-40C to +70C operation storage 3.4.5.3. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50 impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy 1.0 dB Frequency Range DC to 1GHz Impedance 50 Connectors SMA VSWR 1.3:1 Weight 0.2kg Temperature range operation -20C to +60C storage -40C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 32 of 148 3.4.5.4. Low Noise Amplifier (11-005401) The 15dB gain low noise amplifier used in the unit is a double stage solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, the complete amplifier should be replaced. The amplifier is housed in an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type for DC and alarm outputs. 11-005401 Specification PARAMETER SPECIFICATION Frequency range Bandwidth 1dB compression point 3rd order intercept Gain VSWR Input return loss Noise figure Connectors Supply operational storage Size Weight Temperature range 380 - 500MHz
<100MHz (as required, tuneable)
>+20dBm
>+33dBm
>15.5dB (typical) better than 1.5:1
>14dB
<2.0dB (typical) SMA female 115mA at 12V DC
-10C to +60C
-40C to +70C 88 x 50 x 34mm (ex. connectors) 0.26kg LNA D Connector Pin-out details Signal Connector pin 1 2 3 4 5 6 7 8 9
+ve input (10-24V) GND Alarm relay O/P bad Alarm relay common Alarm relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad 9-Way Pin-Out Graphical Representation Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 33 of 148 3.4.5.5. TETRA Power Amplifier 20W (12-016301) This amplifier is a Class A 20W power amplifier from 380MHz to 470MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. It is housed is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. Note the large diameter DC power input pins (1 & 2) fitted to reduce volt-drop/arcing. 12-016301 Specification PARAMETER SPECIFICATION Frequency range 380-470MHz Small signal gain 23dB Gain flatness 1.7dB I/O Return loss >18dB 1dB compression point +43dBm OIP3 +55dBm Supply voltage 24V DC Supply current 3.8Amps (Typical) Temperature range operational
-10C to +60C storage -20C to +70C Weight <2kg (no heatsink) 7-Way Connector Pin-out details Signal Connector Pin A1 (large pin) A2 (large pin) 1 2 3 4 5
+24V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 34 of 148 3.4.5.6. TETRA Power Amplifier 5W (12-021601) Power amplifier 12-021601 is a multi-stage, solid state power amplifier. Class A circuitry is employed throughout the device to ensure excellent linearity over a wide dynamic frequency range. All the semi-
conductor devices are very conservatively rated to ensure low device junction temperatures and a long, trouble free working lifetime. The power amplifier should require no maintenance over its operating life. Under no circumstances should the cover be removed or the side adjustments disturbed unless it is certain that the amplifier has failed; since it is critically aligned during manufacture and any re-alignment will require extensive test equipment. The unit housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-021601 Specification PARAMETER SPECIFICATION Frequency range: 380-470MHz (as required) Bandwidth: 10-40MHz (typical, tuned to spec.) Maximum RF output: >5Watts Gain: >30dB 1dB compression point: +37.5dBm 3rd order intercept point: +50dBm VSWR: better than 1.5:1 Connectors: SMA female Supply: 1.9Amps @ 12V DC Weight: 1kg (excluding heatsink) Temperature range:
operational: -10C to +60C storage: -20C to +70C 7-Way Connector Pin-out details Signal Connector Pin A1 (large pin) A2 (large pin) 1 2 3 4 5
+12V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) 7-Way Pin-Out Graphical Representation A1 1 2 A2 3 4 5 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 35 of 148 3.4.5.7. Low Power Amplifier (1Watt) (12-021801) The low power amplifier used is a 1 stage balanced configuration, solid-state amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. 12-021801 Specification PARAMETER SPECIFICATION Temperature -20 to +70 C Frequency Range 380 - 500 MHz Small Signal Gain 15.5 +/- 0.5 dB Gain Flatness 0.7 dB p-p
Gain vs. Temperature 0.7 dB In RL 20 dB Out RL 20 dB Output Power @ 1dB Compression Point +30.5 dBm Output 3rd Order IP +41.5 dBm Temperature range Noise Figure 6 dB DC Supply Voltage 10-15 Vdc DC Supply Current 540 mA operational:
storage:
Weight: <0.5 kg
-10C to +60C
-40C to +100C Size: 110.5 x 66mm x 24.6mm Low Power Amplifier (12-021801) 9-Way Connector Pin-outs Connector pin 1 2 3 4 5 6 7 8 9 Signal
+ve input (10-15V) GND Alarm relay O/P bad Alarm relay common Alarm relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad 9-Way Pin-Out Graphical Representation 1 2 3 4 5 6 7 8 9 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 36 of 148 3.4.5.8. VHF Power Amplifier 5W (12-025602) Power amplifier 12-025602 is a multi-stage, solid state power amplifier. Class A circuitry is employed throughout the device to ensure excellent linearity over a wide dynamic frequency range. All the semi-
conductor devices are very conservatively rated to ensure low device junction temperatures and a long, trouble free working lifetime. There is a Current Fault Alarm Function, which indicates failure of each RF transistor with an open collector of a NPN transistor. A relay is fitted to indicate the failure by voltage free change over the relay contacts. The power amplifier should require no maintenance over its operating life. Under no circumstances should the cover be removed or the side adjustments disturbed unless it is certain that the amplifier has failed; since it is critically aligned during manufacture and any re-alignment will require extensive test equipment. The unit housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-025602 Specification PARAMETER SPECIFICATION Frequency range 108 to 174 MHz (as required) Maximum RF output >5Watts Gain 34 dB 1dB compression point +37 dBm 3rd order intercept point +48 dBm In / RL 16 dB Out / RL 15 dB Noise Figure 9.5 dB Connectors SMA female Supply 24 +/- 0.5 Vdc @ 1040 mA Max Temperature range operational
-10C to +60C storage -20C to +70C 7-Way Connector Pin-out details Connector Pin A1 (large pin) A2 (large pin) Signal
+24V DC GND 1 2 3 4 5 Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 37 of 148 3.4.5.9. Automatic Gain Control 17-001101 17-001105 17-001201 AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly VHF/UHF BDA UNIT(80-301403) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The Downlink UHF Lowband path is fitted with logarithmic detector (17-001105), and attenuator (17-001201) the Uplink UHF Lowband path and the two VHF paths are each fitted with linear detector (17-001101) and attenuator (17-001201) The Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path before the amplification stage(s) The attenuator comprises a 50 P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50 transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. 3.4.5.10. 24V Relay Dual Assembly (20-001602) The General Purpose 24V Dual Relay Board (20-001602) allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays RL1 and RL2, with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. Its common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 38 of 148 20-001602 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm Threshold Vcc - 1.20 volt +15%
Alarm output relay contacts:
Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0A/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Temperature range Connector details Screw terminals
-10C to +60C storage -20C to +70C operational 3.4.5.11. 24V Relay Assembly (80-008902) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single, dual pole, change-over relay RL1 with completely isolated wiring, accessed via screw terminals. The relay is provided with a polarity protection diode and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. Its common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 80-008902 Specification Parameter Max. switch current 1.0Amp Specification Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0A/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Connector details 15-way 0.1" pitch Temperature range operational
-10C to +55C storage -40C to +70C 3.4.5.12. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 39 of 148 3.4.5.13. DC/DC Converter, 24V in, 12V 5A out (96-200024) This unit it is an O.E.M high power device with a 5 amp @ 12V (60Watts) output capability used to derive a 12V fixed voltage power supply rail from a 24V supply. In the event of failure this unit should not be repaired, only replaced. 96-200024 Specification PARAMETER Input Voltage range 18-28V DC SPECIFICATION Output voltage 12V0.5V Max output current load 5.0 Amps Temperature range operation -10C to +60C storage -20C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 40 of 148 3.5. UHF BDA Unit (80-301404) UHF BDA Unit (80-301404) provides the amplification stages for the UHF Midband and UHF Highband paths, The unit is housed in a wall mount case 600x600x250mm (24 x 24 x 10 approx). The Downlink UHF Midband signal is received at the port labelled UHF MID D/L INPUT (Annotated A in the picture in section 3.5.4.2.). The signal passes through a switched attenuator providing 0 to 30 dB of RF signal attenuation and then into the amplification stage. The Downlink UHF Midband amplification stage is provided by two amplifier modules, the first is a 15dB gain Low Power Amplifier and the second is a 20W, 23dB gain power amplifier. Both amplification stages are straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The input to the AGC detector is provided by the output of a 30dB tap. After leaving the Amplification/AGC stage the Downlink UHF Midband signal exits the BDA via the port labelled UHF MID D/L OUTPUT (B in section 3.5.4.2.). The Uplink UHF Midband signal is received at the port labelled UHF MID U/L INPUT (D in section 3.5.4.2.). The signal passes into a Low Noise Amplifier providing 15dB of gain and then into a switched attenuator providing 0 to 30 dB of RF signal attenuation. After the attenuator the Uplink UHF Midband signal passes into a second stage of amplification provided by a 5W, 30dB gain Power Amplifier, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The Uplink UHF Midband signal exits the BDA via the port labelled UHF MID U/L OUTPUT (C in section 3.5.4.2.). The Downlink UHF Highband signal is received at the port labelled UHF HIGH D/L INPUT
(Annotated G in the picture in section 3.5.4.2.). The signal passes through a switched attenuator providing 0 to 30 dB of RF signal attenuation and then into the amplification stage. The Downlink UHF Highband amplification stage is provided by two amplifier modules, the first is a 15dB gain Low Power Amplifier and the second is a 20W, 23dB gain power amplifier. Both amplification stages are straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The input to the AGC detector is provided by the output of a 30dB tap. After leaving the Amplification/AGC stage the Downlink UHF Highband signal exits the BDA via the port labelled UHF HIGH D/L OUTPUT (H in section 3.5.4.2.). The Uplink UHF Highband signal is received at the port labelled UHF HIGH U/L INPUT (E in section 3.5.4.2.). The signal passes into a Low Noise Amplifier providing 15dB of gain and then into a switched attenuator providing 0 to 30 dB of RF signal attenuation. After the attenuator the Uplink UHF Highband signal passes into a second stage of amplification provided by a 5W, 30dB gain Power Amplifier, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The Uplink UHF Highband signal exits the BDA via the port labelled UHF HIGH U/L OUTPUT (F in section 3.5.4.2.). UHF BDA Unit (80-301404) is provided with a 24V DC input to power the amplifier modules within and those amplifier modules are configured to provide alarm status reports. Separate alarm contact outputs are provided for the UHF Midband and the UHF Highband paths. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 41 of 148 3.5.1. UHF BDA Unit (80-301404) System Diagram Drawing Number 80-301484 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 42 of 148 3.5.2. UHF BDA Unit (80-301404) Outline Drawing Drawing Number 80-301494 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 43 of 148 3.5.3. UHF BDA Unit (80-301404) Specification Parameter Specification Downlink Downlink Passband Maximun gain Gain Adjustment 1dB Compression Point
(P1dB) ALC setting 3rd Order Intercept point Uplink Uplink Passband Maximun gain Gain Adjustment 1dB Compression Point
(P1dB) ALC setting 3rd Order Intercept point Noise Figure UHF Midband 482.5 to 483.8MHz UHF Highband 507.0 to 507.3MHz UHF Midband 30dB UHF Highband 30dB UHF Midband 0 to 30dB in 2dB steps UHF Highband 0 to 30dB in 2dB steps UHF Midband > +42.5dBm UHF Highband > +42.5dBm UHF Midband 1dB below P1dB UHF Highband 1dB below P1dB UHF Midband > +53.5dBm UHF Highband > +53.5dBm UHF Midband 485.7 to 486.8MHz UHF Highband 510.0 to 510.3MHz UHF Midband 30dB UHF Highband 30dB UHF Midband 0 to 30dB in 2dB steps UHF Highband 0 to 30dB in 2dB steps UHF Midband > +36.5dBm UHF Highband > +36.5dBm UHF Midband +27dBm UHF Highband +27dBm UHF Midband > +48.0dBm UHF Highband > +48.0dBm UHF Midband < 3.0dB UHF Highband < 3.0dB Environmental/Mechanical Specification Mechanical Dimensions
(excludes handles and connectors) IP65 Wall Mount 620mm x 620mm x 250mm
(24 x 24 x 10 approx) RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per band path Power Supply 24V DC Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 44 of 148 3.5.4. UHF BDA Unit (80-301404) Photographs 3.5.4.1. Front View Note: All connectors (RF, DC and Alarms) are on the underside Red LED UHF Highband Downlink Alarm Red LED UHF Highband Uplink Alarm A B C Red LED UHF Midband Downlink Alarm D Red LED UHF Midband Uplink Alarm E Green LED Power On F Lockable Door Handles Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 45 of 148 3.5.4.2. Underside view showing connectors UHF Midband Downlink Input from port 3 on Combiner 80-301402 UHF Midband Downlink Output to port C on Combiner 80-301402 A B C UHF Midband Uplink Output to port 8 on Combiner 80-301402 D UHF Midband Uplink Input from port H on Combiner 80-301402 UHF Highband Uplink Input from port I on Combiner 80-301402 E F UHF Highband Uplink Output to port 9 on Combiner 80-301402 G UHF Highband Downlink Input from port 4 on Combiner 80-301402 H UHF Highband Downlink Output to port D on Combiner 80-301402 I J K L 24V DC Input UHF Midband Band Alarm Output UHF Highband Alarm Output Earth Connection Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 46 of 148 3.5.4.3. Interior view UHF Midband Downlink Switched Attenuator 10-000701 UHF Midband Downlink AGC Attenuator 17-001201 UHF Midband Downlink 30dB Directional Coupler 07-002908 UHF Midband Downlink AGC Detector Assembly 17-001105 UHF Midband Uplink AGC Attenuator 17-001201 UHF Midband Uplink 5W Power Amplifier 12-021601 UHF Midband Uplink AGC Detector Assembly 17-001101 UHF Highband Downlink Switched Attenuator 10-000701 A B C UHF Midband Downlink Low Power Amplifier 12-021801 D UHF Midband Downlink 20W Power Amplifier 12-016301 E F G UHF Midband Uplink Low Noise Amplifier 11-005401 H UHF Midband Uplink Switched Attenuator 10-000701 I J K L M UHF Highband Downlink AGC Attenuator 17-001201 N UHF Highband Downlink Low Power Amplifier 12-021801 O UHF Highband Downlink 20W Power Amplifier 12-016301 P UHF Highband Downlink 30dB Directional Coupler 07-002908 Q UHF Highband Downlink AGC Detector Assembly 17-001105 R UHF Highband Uplink Low Noise Amplifier 11-005401 S UHF Highband Uplink Switched Attenuator 10-000701 T UHF Highband Uplink AGC Attenuator 17-001201 U UHF Highband Uplink 5W Power Amplifier 12-021601 V W DC/DC Converter 13-003011 24V Dual Relay Assembly 20-001602 UHF Highband Alarms X 24V Dual Relay Assembly 20-001602 UHF Midband Alarms Y Z 24V Relay Assembly 80-008909 UHF Midband Alarms AA 24V Relay Assembly 80-008909 UHF Highband Alarms BB Dual Diode Assembly 94-100004 CC DC Circuit Breaker UHF Highband Uplink AGC Detector Assembly 17-001101 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 47 of 148 3.5.5. UHF BDA Unit (80-301404) Major Sub-components Section Component Component Part Description Part 3.5.5.1. 3.5.5.2. 3.5.5.3. 3.5.5.4. 3.5.5.5. 3.5.5.6. 3.5.5.7. 3.5.5.8. 07-002908 10-000701 11-005401 12-016301 12-021601 12-021801 13-003011 17-001101 17-001105 17-001201 3.5.5.9. 20-001602 3.5.5.10. 80-008909 3.5.5.11. 94-100004 30dB Directional Coupler Switched Attenuator 0.25Watt, 0 - 30dB Low Noise Amplifier TETRA Power Amplifier 20W TETRA Power Amplifier 5W Low Power Amplifier DC/DC Converter AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly 24V Dual Relay Assembly 24V Relay Assembly Dual Diode Assembly Qty Per Assembly 2 4 2 2 2 2 1 2 2 4 2 2 1 3.5.5.1. 30dB Directional Coupler (07-002908) The purpose of these couplers is to tap off known portions of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50 load to all ports/interfaces throughout the specified frequency range. They are known as directional couplers as they couple power from the RF mainline in one direction only. Directional Coupler 07-002908 is configured to tap off 30dB. 07-002908 Specification PARAMETER SPECIFICATION Frequency range 50 - 1000MHz Insertion loss <0.3dB Coupling level
-30dB Rejection N/A Weight <200g Temperature range Connectors N type, female
-20C to +60C
-40C to +70C operation storage 3.5.5.2. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50 impedance over their operating frequency at both input and output. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 48 of 148 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy 1.0 dB Frequency Range DC to 1GHz Impedance 50 Connectors SMA VSWR 1.3:1 Weight 0.2kg Temperature range operation -20C to +60C storage -40C to +70C 3.5.5.3. Low Noise Amplifier (11-005401) The 15dB gain low noise amplifier used in the unit is a double stage solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, the complete amplifier should be replaced. The amplifier is housed in an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type for DC and alarm outputs. 11-005401 Specification PARAMETER SPECIFICATION Frequency range Bandwidth 1dB compression point 3rd order intercept Gain VSWR Input return loss Noise figure Connectors Supply operational storage Size Weight Temperature range 380 - 500MHz
<100MHz (as required, tuneable)
>+20dBm
>+33dBm
>15.5dB (typical) better than 1.5:1
>14dB
<2.0dB (typical) SMA female 115mA at 12V DC
-10C to +60C
-40C to +70C 88 x 50 x 34mm (ex. connectors) 0.26kg LNA D Connector Pin-out details Connector pin Signal 1 2 3 4 5 6 7 8 9
+ve input (10-24V) GND Alarm relay O/P bad Alarm relay common Alarm relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 49 of 148 3.5.5.4. TETRA Power Amplifier 20W (12-016301) This amplifier is a Class A 20W power amplifier from 380MHz to 470MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. It is housed is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. Note the large diameter DC power input pins (1 & 2) fitted to reduce volt-drop/arcing. 12-016301 Specification PARAMETER SPECIFICATION Frequency range 380-470MHz Small signal gain 23dB Gain flatness 1.7dB I/O Return loss >18dB 1dB compression point +43dBm OIP3 +55dBm Supply voltage 24V DC Supply current 3.8Amps (Typical) Temperature range operational
-10C to +60C storage -20C to +70C Weight <2kg (no heatsink) 7-Way Connector Pin-out details Signal Connector Pin A1 (large pin) A2 (large pin) 1 2 3 4 5
+24V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 50 of 148 3.5.5.5. TETRA Power Amplifier 5W (12-021601) Power amplifier 12-021601 is a multi-stage, solid state power amplifier. Class A circuitry is employed throughout the device to ensure excellent linearity over a wide dynamic frequency range. All the semi-
conductor devices are very conservatively rated to ensure low device junction temperatures and a long, trouble free working lifetime. The power amplifier should require no maintenance over its operating life. Under no circumstances should the cover be removed or the side adjustments disturbed unless it is certain that the amplifier has failed; since it is critically aligned during manufacture and any re-alignment will require extensive test equipment. The unit housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-021601 Specification PARAMETER SPECIFICATION Frequency range: 380-470MHz (as required) Bandwidth: 10-40MHz (typical, tuned to spec.) Maximum RF output: >5Watts Gain: >30dB 1dB compression point: +37.5dBm 3rd order intercept point: +50dBm VSWR: better than 1.5:1 Connectors: SMA female Supply: 1.9Amps @ 12V DC Weight: 1kg (excluding heatsink) Temperature range:
operational: -10C to +60C storage: -20C to +70C 7-Way Connector Pin-out details Signal Connector Pin A1 (large pin) A2 (large pin) 1 2 3 4 5
+10-24V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) 7-Way Pin-Out Graphical Representation A1 1 2 A2 3 4 5 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 51 of 148 3.5.5.6. Low Power Amplifier (12-021801) The low power amplifier used is a 1 stage balanced configuration, solid-state amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. 12-021801 Specification PARAMETER SPECIFICATION Temperature -20 to +70 C Frequency Range 380 - 500 MHz Small Signal Gain 15.5 +/- 0.5 dB Gain Flatness 0.7 dB p-p
Gain vs. Temperature 0.7 dB In RL 20 dB Out RL 20 dB Output Power @ 1dB Compression Point +30.5dBm Output 3rd Order IP +41.5dBm Temperature range Noise Figure 6 dB DC Supply Voltage 10-15 Vdc DC Supply Current 540 mA Max operational
-10C to +60C storage -40C to +100C Weight <0.5 kg Size 110.5 x 66mm x 24.6mm Low Power Amplifier (12-021801) 9-Way Connector Pin-outs Connector pin Signal 1 2 3 4 5 6 7 8 9
+ve input (10-15V) GND Alarm relay O/P bad Alarm relay common Alarm relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad 9-Way Pin-Out Graphical Representation 1 2 3 4 5 6 7 8 9 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 52 of 148 3.5.5.7. DC/DC Converter, 24V in, 12V 8A out (13-003011) The DC/DC converter fitted is a high power PCB unit with an 8 amp at 12V output capability. The circuit is basically an O.E.M semiconductor regulator (one side of which has a heatsink mounting plate, usually bolted to the casing of the unit) and smoothing components built onto a printed circuit board with screw block terminations. In event of failure this unit should not be repaired, only replaced. 13-003011 Specification PARAMETER SPECIFICATION Input Voltage range 18-28V DC Output voltage 12V0.5V Max. current load 8.0Amps Temperature range operation -10C to +60C storage -20C to +70C Size(PCB) 190 x 63mm Weight (Loaded PCB) 291g 3.5.5.8. Automatic Gain Control 17-001101 17-001105 17-001201 AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly UHF BDA UNIT(80-301404) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The Downlink UHF Midband and Highband paths are each fitted with logarithmic detector (17-001105), and attenuator (17-001201) the Uplink UHF Midband and Highband paths are each fitted with linear detector (17-001101) and attenuator (17-001201) The Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path before the amplification stage(s) The attenuator comprises a 50 P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50 transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 53 of 148 3.5.5.9. 24V Relay Dual Assembly (20-001602) The General Purpose 24V Dual Relay Board (20-001602) allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays RL1 and RL2, with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. Its common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 20-001602 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm Threshold Vcc - 1.20 volt +15%
Alarm output relay contacts:
Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0A/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Temperature range Connector details Screw terminals
-10C to +60C storage -20C to +70C operational 3.5.5.10. 24V Relay Assembly (80-008909) Relay Board (80-008909) allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. Its common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. This relay board also carries an LED to serve as a Status OK indicator which is illuminated during normal operation. 80-008909 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15%
Alarm output relay contacts Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0A/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Temperature range Connector details Screw terminals
-10C to +60C storage -20C to +70C operational Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 54 of 148 3.5.5.11. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to provide polarity protection for the DC supply input. They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 55 of 148 3.6. 800MHz BDA UNIT (80-301405) 800MHz BDA UNIT (80-301405) provides the amplification stages for the 800MHz paths, The unit is housed in a wall mount case 600x600x250mm (24 x 24 x 10 approx). The Downlink 800MHz signal is received at the port labelled D/L INPUT (Annotated A in the picture in section 3.6.4.2.). The Downlink 800MHz path passes through a bandpass filter to remove out of band noise and then a switched attenuator providing 0 to 30 dB of RF signal attenuation, after the Attenuator the signal passes through the first of two amplification stages. This first stage is provided by a low noise amplifier which gives approx. 19dB of gain. After the Low Noise Amplifier the Downlink 800MHz signal passes through the second amplification stage; the signal is first split into two equal paths and then each path is passed through a 20W power amplifier and then the two signal paths are re-combined. The second stage amplifiers are straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. After leaving the second stage amplifiers the Downlink 800MHz signal path passes through a second bandpass filter before exiting the BDA via the port labelled D/L OUTPUT (B in section 3.6.4.2.). The Uplink 800MHz signal is received at the port labelled U/L INPUT (C in section 3.6.4.2.). The Uplink 800MHz path passes through a bandpass filter to remove out of band noise and then into the first of two amplification stages, the first stage is provided by a low noise amplifier which gives approx. 19dB of gain; after leaving the Low Noise Amplifier the signal passes through a switched attenuator providing 0 to 30 dB of RF signal attenuation, After leaving the switched attenuator the Uplink 800MHz path passes through the second stage of amplification which is provided by a 5W power amplifier giving approx. 30db of gain; this second amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. After leaving the second amplification stage the Uplink 800MHz path passes through a second bandpass filter before exiting the BDA via the port labelled U/L OUTPUT (D in section 3.6.4.2.). 800MHz BDA UNIT (80-301405) is provided with a 24V DC input to power the amplifier modules within and those amplifier modules are configured to provide alarm status reports. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 56 of 148 3.6.1. 800MHz BDA UNIT (80-301405) System Diagram Drawing Number 80-301485 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 57 of 148 3.6.2. 800MHz BDA UNIT (80-301405) Outline Drawing Drawing Number 80-301495 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 58 of 148 3.6.3. 800MHz BDA UNIT (80-301405) Specification Parameter Specification Downlink Uplink Downlink Passband 856.0 to 861.0MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) > +45.0dBm ALC setting 1dB below P1dB 3rd Order Intercept point > +55.0dBm Uplink Passband 811.0 to 816.0MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) > +36.0dBm ALC setting +27dBm 3rd Order Intercept point > +46.0dBm Noise Figure < 5.0 dB Environmental/Mechanical Specification Mechanical Dimensions
(excludes handles and connectors) IP65 Wall Mount 620mm x 620mm x 250mm
(24 x 24 x 10 approx) RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per band path Power Supply 24V DC Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 59 of 148 3.6.4. 800MHz BDA UNIT (80-301405) Photographs 3.6.4.1. Front View Note: All connectors (RF, DC and Alarms) are on the underside A Green LED Power On B Red LED Uplink Alarm C Red LED Downlink Alarm D Lockable Door Handles 3.6.4.2. Underside view showing connectors A B C D E F G 800MHz Downlink Input from port 5 on Combiner 80-301402 800MHz Downlink output to port E on Combiner 80-301402 800MHz Downlink Input from port J on Combiner 80-301402 800MHz Downlink output to port 10 on Combiner 80-301402 Alarm Output 24V DC Input Earth Connection Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 60 of 148 3.6.4.3. Interior view Downlink 30dB Directional Coupler 07-002907 Downlink AGC Detector Assembly17-001105 Downlink Output Bandpass Filter 02-011601 Uplink Input Bandpass Filter 02-011601 Downlink Input Bandpass Filter 02-011601 A Downlink Switched Attenuator 10-000701 B C Downlink Low Noise Amplifier 11-005902 D Downlink AGC Attenuator Assembly17-001201 E Downlink Splitter/Combiner 05-002602 (splits signal to feed Power Amplifiers) F Downlink 20W Power Amplifier 12-020501 (1) G Downlink 20W Power Amplifier 12-020501 (2) H Downlink Splitter/Combiner 05-002602 (combines signals from Power Amplifiers) I J K L M Uplink Low Noise Amplifier 11-005902 N Uplink Switched Attenuator 10-000701 O Uplink AGC Attenuator Assembly17-001201 P Q Uplink AGC Detector Assembly17-001101 R Uplink Output Bandpass Filter 02-011601 S T U Dual Diode Assembly 94-100004 V Main DC Circuit Breaker 24V Relay Dual Assembly 20-001602 DC/DC Converter 96-200024 Uplink 5W Power Amplifier 12-018601 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 61 of 148 3.6.5. 800MHz BDA UNIT (80-301405) Major Sub-components section Component Component Part Description Part 3.6.5.1. 3.6.5.2. 3.6.5.3. 3.6.5.4. 3.6.5.5. 3.6.5.6. 3.6.5.7. 3.6.5.8. 02-011601 05-002602 07-002907 10-000701 11-005902 12-018601 12-020501 17-001101 17-001105 17-001201 20-001602 Bandpass FIlter Splitter/Combiner 30dB Directional Coupler Switched Attenuator 0.25Watt, 0 - 30dB Low Noise Amplifier 5W Power Amplifier 20W Power Amplifier AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly 24V Relay Dual Assembly 3.6.5.9. 3.6.5.10. 94-100004 Dual Diode Assembly 3.6.5.11. 96-200024 DC/DC Converter, 24V in, 12V 5A out Qty Per Assembly 4 2 1 2 2 1 2 1 1 2 1 1 1 3.6.5.1. Bandpass Filter (02-011601) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50 load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. 02-011601 Specification PARAMETER SPECIFICATION Frequency Range Bandwidth Downlink 856 to 861MHz Uplink 811 to 816MHz Downlink 5 MHz Uplink 5 MHz Number of Sections 8 Insertion Loss 1.2 dB VSWR better than 1.2:1 Connectors SMA Power Handling 100W max Temperature range operation -10C to +55C storage -40C to +70C Weight 3 kg (typical) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 62 of 148 3.6.5.2. Splitter/Combiner (05-002602) The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50 load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50 load. Being passive devices, the splitters should have an extremely long operational life and require no maintenance. Should a unit be suspect, it is usually most time efficient to replace the whole module rather than attempt repair or re-tuning. 05-002602 Specification PARAMETER SPECIFICATION Frequency Range 800 1000MHz Bandwidth 200MHz Ports 3 Insertion loss 3.3dB typical Return loss input & output 1.3:1 Impedance 50 Power rating Isolation >20dB MTFB >180,000 hours Splitting 20Watts 0.5Watt Combining Connectors SMA female Weight 200g (approximately) Size 54 x 44 x 21mm 3.6.5.3. 30dB Directional Coupler (07-002907) The purpose of these couplers is to tap off known portions (in this case 30dB) of RF signal from transmission lines inband to combine them, for example through splitter units for different purposes
(alarms/monitoring etc.), whilst maintaining an accurate 50 load to all ports/interfaces throughout the specified frequency range. They are known as directional couplers as they couple power from the RF mainline in one direction only. 07-002907 Specification PARAMETER SPECIFICATION Frequency range 800 - 1000MHz Insertion loss <0.3dB Coupling level
-30dB 0.5dB Rejection N/A Weight <200g Connectors SMA, female Temperature range operation -20C to +60C storage -40C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 63 of 148 3.6.5.4. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50 impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy 1.0 dB Frequency Range DC to 1GHz Impedance 50 Connectors SMA VSWR 1.3:1 Weight 0.2kg Temperature range operation -20C to +60C storage -40C to +70C 3.6.5.5. Low Noise Amplifier (11-005902) The Gallium-Arsenide low noise amplifier used in the unit is a double stage, solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into any alarm system. There is a Current Fault Alarm Function, which indicates failure of each one or both RF transistors by a various alarm output options. The amplifier is housed in an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type for DC and alarm outputs. 11-005902 Specification PARAMETER SPECIFICATION Frequency range 800 960MHz Bandwidth <170MHz Gain 19.5dB (typical) 1dB compression point +21dBm OIP3 +33dBm Input/output return loss >20dB Noise figure 1dB (typical) Power consumption 190mA @ 24V DC Supply voltage 10-24V DC Temperature range Connectors SMA female operational
-10C to +60C storage -40C to +70C Size 90 x 55 x 30.2mm Weight 0.28kg Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 64 of 148 LNA D Connector Pin-out details Connector pin Signal 1 2 3 4 5 6 7 8 9
+Ve input (10-24V) GND Alarm relay O/P bad Alarm relay common Alarm relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad 3.6.5.6. 5W Power Amplifier (12-018601) This amplifier is a Class A 5W power amplifier from 800MHz to 960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-018601 Specification PARAMETER SPECIFICATION Frequency range 800-960MHz Small signal gain 30dB Gain flatness 0.5dB I/O Return loss >20dB 1dB compression point +37dBm OIP3 +52dBm Supply voltage 12V DC Supply current 2.0Amps (typical) Temperature range operational
-10C to +60C storage -20C to +70C Weight <2kg (no heatsink) PA 7-Way Connector Pin-outs Connector Pin A1 (large pin) A2 (large pin) Signal
+12V DC GND 1 2 3 4 5 Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 65 of 148 3.6.5.7. 20W Power Amplifier (12-020501) This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-020501 Specification PARAMETER SPECIFICATION Frequency range 800-960MHz Small signal gain 31.5dB Gain flatness 0.6dB I/O Return loss >18dB 1dB compression point +43.5dBm OIP3 +54dBm Supply voltage 24V DC Supply current 4.6Amps @12V(typical) Temperature range operational
-10C to +60C storage -20C to +70C Weight <2kg (no heatsink) PA 7-Way Connector Pin-outs Connector Pin A1 (large pin) A2 (large pin) Signal
+24V DC GND 1 2 3 4 5 Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) 7-Way Connector Graphical Representation A1 1 2 A2 3 4 5 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 66 of 148 3.6.5.8. Automatic Gain Control 17-001101 17-001105 17-001201 AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly 800MHz BDA UNIT (80-301405) is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The Downlink path is fitted with logarithmic detector (17-
001105), and attenuator (17-001201) the Uplink path is fitted with linear detector (17-001101) and attenuator (17-001201) The Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path before the amplification stage(s) The attenuator comprises a 50 P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50 transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. 3.6.5.9. 24V Relay Dual Assembly (20-001602) The General Purpose 24V Dual Relay Board (20-001602) allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays RL1 and RL2, with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. Its common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 67 of 148 20-001602 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm Threshold Vcc - 1.20 volt +15%
Alarm output relay contacts:
Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0A/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Temperature range Connector details Screw terminals
-10C to +60C storage -20C to +70C operational 3.6.5.10. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to provide polarity protection for the DC voltage input. They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source. 3.6.5.11. DC/DC Converter, 24V in, 12V 5A out (96-200024) This unit it is an O.E.M high power device with a 5 amp @ 12V (60Watts) output capability used to derive a 12V fixed voltage power supply rail from a 24V supply. In the event of failure this unit should not be repaired, only replaced. 96-200024 Specification PARAMETER Input Voltage range 18-28V DC SPECIFICATION Output voltage 12V0.5V Max. current load 5.0 Amps Temperature range operation -10C to +60C storage -20C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 68 of 148 4. In-Line BDA Rack Mount 80-301406 The Rack Mount In Line BDA consists of ten, 19 equipment rack mount shelves The function is exactly the same as the Wall Mount unit in section 3 but the construction is different. The Rack Mount BDA is divided into four main components equivalent to the four Wall Mount cases described in section 3, these are:
The Splitter Combiner which is comprised of four, 4U 19 rack mount shelves:
Downlink Input Shelf 80-301407 Downlink Output Shelf 80-301408 Uplink Input Shelf 80-301407 Uplink Output Shelf 80-301407 The VHF and UHF Low Band Amplifier which is comprised of two, 4U 19 rack mount shelves:
VHF Amplifier Shelf 80-301409 UHF Lowband Amplifier Shelf 80-301410 The Mid and High Band UHF Amplifier which is comprised of two, 4U 19 rack mount shelves:
UHF Midband Amplifier Shelf 80-301410 UHF Highband Amplifier Shelf 80-301410 The 800MHz Amplifier which is comprised of one, 8U 19 rack mount shelf:
800MHz Amplifier Shelf 80-301411 A 2U 19 rack mount shelf houses the power supply unit that provides 24V DC feeds to the amplifier shelves The entire arrangement is housed in two, 40U Swing-fame 19 Equipment Mountings Racks, Rack 1 houses:
Downlink Input Shelf 80-301407 Uplink Input Shelf 80-301407 Uplink Output Shelf 80-301407 UHF Highband Amplifier Shelf 80-301410 UHF Midband Amplifier Shelf 80-301410 UHF Lowband Amplifier Shelf 80-301410 VHF Amplifier Shelf 80-301409 PSU Shelf Rack 2 houses:
Downlink Output Shelf 80-301408 800MHz Amplifier Shelf 80-301411 Rack interconnections, test ports and connections to the Leaky Feeders are via patch panels in the tops of each rack Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 69 of 148 Downlink The downlink signal is received from the radiating cable and enters the Downlink Input Shelf 80-
301407 where by means of crossband splitter/couplers it is split into VHF, UHF and 800MHz paths, the UHF path is further split into Low, Middle and Highband paths. The VHF and UHF LowBand paths leave Downlink Input Shelf 80-301407. The VHF path goes to the Downlink Input of VHF Amplifier Shelf 80-301409 and the UHF Lowband path goes to the Downlink Input of UHF Lowband Amplifier Shelf 80-301410. The UHF Mid and Highband paths leave Downlink Input Shelf 80-301407 the UHF Midband path goes to the Downlink Input of UHF Midband Amplifier Shelf 80-301410; the UHF Highband path goes to the Downlink Input of UHF Highband Amplifier Shelf 80-301410 The 800MHz path leaves Downlink Input Shelf 80-301407 and goes to the Downlink Input of 800MHz Amplifier Shelf 80-301411 After their respective amplification stages the signal paths enter Downlink Output Shelf 80-301408 where they are combined into a single path and fed into the radiating cable. Uplink The Uplink signal signal is received from the radiating cable and enters Uplink Input Shelf 80-301407 where by means of crossband splitter/couplers it is split into VHF, UHF and 800MHz paths, the UHF path is further split into Low, Middle and High band paths. The VHF and UHF LowBand paths leave Uplink Input Shelf 80-301407. The VHF path goes to the Uplink Input of VHF Amplifier Shelf 80-301409 and the UHF Lowband path goes to the Uplink Input of UHF Lowband Amplifier Shelf 80-301410. The UHF Mid and Highband paths leave Uplink Input Shelf 80-301407 the UHF Midband path goes to the Uplink Input of UHF Midband Amplifier Shelf 80-301410; the UHF Highband path goes to the Uplink Input of UHF Highband Amplifier Shelf 80-301410 The 800MHz path leaves Uplink Input Shelf 80-301407 and goes to the Uplinklink Input of 800MHz Amplifier Shelf 80-301411 After their respective amplification stages the signal paths enter Uplink Output Shelf 80-301407 where they are combined into a single path and fed into the radiating cable. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 70 of 148 4.1. In-Line BDA Rack Mount System Diagrams 4.1.1. Overall System Diagram Drawing Number 80-301486 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 71 of 148 4.1.2. Combiners System Diagram Drawing Number 80-301487 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 72 of 148 4.2. In-Line BDA Rack Mount 80-301406 Specification ELECTRICAL SPECIFICATION Frequency Range VHF UHF Low UHF Mid UHF High 800MHz Downlink 154.0 to 161.5 MHz Uplink 155.5 to 161.0 MHz Downlink 460.4 to 460.5 MHz Uplink 465.4 to 465.5 MHz Downlink 482.5 to 483.8 MHz Uplink 485.7 to 486.8 MHz Downlink 507.0 to 507.3 MHz Uplink 510.0 to 510.3 MHz Downlink 856.0 to 861.0 MHz Uplink 811.0 to 816.0 MHz Downlink Power Amplifier Uplink Power Amplifier Passband Ripple 1.5dB VHF 5 Watts UHF Low 20 Watts UHF Mid 20 Watts UHF High 20 Watts 800MHz 40 Watts VHF 5 Watts UHF Low 5 Watts UHF Mid 5 Watts UHF High 5 Watts 800MHz 5 Watts Gain 30dB Gain Adjust 0 - 30dB in 2dB Steps Sampling Ports 30dB VSWR 1.5:1 Impedance 50 Ohms Power Supply 24V DC Power Consumption < 800 Watts Mechanical Specification Mechanical Two 40U, 19 Swingframe, 600mm x 600mm Equipment Mounting racks RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per band path Axell Wireless Limited Technical Literature Document Number 80-301401HBKM L.A. M.T.A. Remote Sites Issue No. 1 Date 13/06/2008 Page 73 of 148
| 1 | Manual 2 of 2 | Users Manual | 1.89 MiB |
4.3. In-Line BDA Rack Mount 80-301406 Illustrations 4.3.1. Rack 1 Front View A B C D E F G H I J K Downlink Input Shelf 80-301407 Uplink Input Shelf 80-301407 Uplink Output Shelf 80-301407 UHF Highband Amplifier Shelf 80-301410 UHF Midband Amplifier Shelf 80-301410 UHF Lowband Amplifier Shelf 80-301410 VHF Amplifier Shelf 80-301409 PSU Shelf PSU Modules 2U Blanking Panel 1U Blanking panel Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 74 of 148 4.3.2. Rack 1 Rear View A B C D E F G H I Downlink Input Shelf 80-301407 Uplink Input Shelf 80-301407 Uplink Output Shelf 80-301407 UHF Highband Amplifier Shelf 80-301410 UHF Midband Amplifier Shelf 80-301410 UHF Lowband Amplifier Shelf 80-301410 VHF Amplifier Shelf 80-301409 PSU Shelf Rack Interconnections Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 75 of 148 4.3.3. Rack 2 Front View A B C D Downlink Output Shelf 80-301408 800MHz Amplifier Shelf 80-301411 4U Blanking panel 1U Blanking panel Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 76 of 148 4.3.4. Rack 2 Rear View Top part of rack only A B C Downlink Output Shelf 80-301408 800MHz Amplifier Shelf 80-301411 Rack Interconnections Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 77 of 148 4.3.5. Rack 1 Top View UHF HIGH D/P O/P UHF MID D/L O/P A U/L I/P J B U/L I/P C D/L I/P D U/L O/P E F G D/L I/P TEST PORT H U/L I/P TEST PORT I J K L M VHF D/L O/P N CABLE GLAND FOR ELECTRICAL WIRING D/L I/P A U/L O/P TEST PORT U/L O/P C UHF LOW D/L O/P Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 78 of 148 4.3.6. Rack 2 Top View A D/L O/P D B D/L O/P B C D/L I/P D D/L O/P E U/L I/P F D/L O/P C G U/L O/P H D/L O/P TEST PORT I D/L O/P A J CABLE GLAND FOR ELECTRICAL WIRING Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 79 of 148 4.4. In-Line BDA Rack Mount 80-301401 List of Major Components Section Component Component Part Description 4.5. 4.6. 4.7. 4.8. 4.9. 4.10. 4.11. 4.12. 4.13. 4.14 Part 80-301407 80-301408 80-301407 80-301407 80-301409 80-301410 80-301410 80-301410 80-301411 96-300064 Downlink Input Shelf Downlink Output Shelf Uplink Input Shelf Uplink Output Shelf VHF Amplifier Shelf UHF Lowband Amplifier Shelf UHF Midband Amplifier Shelf UHF Highband Amplifier Shelf 800MHz Amplifier Shelf PSU Qty Per Assembly 1 1 1 1 1 1 1 1 1 2 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 80 of 148 4.5. Downlink Input Shelf 80-301407 Downlink Input Shelf 80-301407 is part of the main Splitter/Combiner assembly. Signals are received from the radiating cable and are then split into their various separate paths before being amplified by external band specific amplifiers The unit is housed in a 4U, 19 rack mount case which is mounted in Rack 1 Downlink signals are received at the port labelled DOWNLINK INPUT (Annotated A in the picture in section 4.5.4.1.) and there is a 30dB test port labelled DOWNLINK INPUT TEST PORT (B in section 4.5.4.1.). Ports labelled 1 to 5 (C to G in section 4.5.4.1.) are the Downlink outputs to the amplification stages. Downlink Input Shelf 80-301407 also incorporates bandpass filtering for the three UHF bands, the filters are placed in the RF path before the outputs to the external amplification stages 4.5.1. Downlink Input Shelf 80-301407 System Schematic Downlink Input Shelf 80-301407 02-010701 460.4 to 450.5MHz 02-010701 07-005745 482.5 to 483.8MHz 02-010901 507.0 to 507.3MHz B A 07-022005 07-004815 C D E F G A B C D E F G Downlink Input from leaky Feeder Downlink Input Test Port (30dB Tap) Port 1. Downlink VHF Output to VHF Amplifier Shelf 80-301409 Port 2. Downlink UHF Lowband Output to UHF Lowband Amplifier Shelf 80-301410 Port 3. Downlink UHF Midband Output to UHF Midband Amplifier Shelf 80-301410 Port 4. Downlink UHF Highband Output to UHF Highband Amplifier Shelf 80-301410 Port 5. Downlink 800MHz Output to 800MHz Amplifier Shelf 80-301411 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 81 of 148 4.5.2. Downlink Input Shelf 80-301407 Outline Drawing Drawing Number 80-301497 Drawing also applies to Uplink Input Shelf 80-301407 and Uplink Output Shelf 80-301407 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 82 of 148 4.5.3. Downlink Input Shelf 80-301407 Specification PARAMETER SPECIFICATION Insertion Loss from Downlink Input port to port indicated VHF Band to port 1 < 1.0dB at 154.0 161.3MHz UHF Low Band to port 2 < 3.5dB at 460.4 460.5MHz UHF Mid Band to port 3 < 3.5dB at 482.5 -483.8MHz UHF High Band to port 4 < 4.0dB at 507.0 507.3MHz 800MHz Band to port 5 < 1.0dB at 856.0 861.0MHz Insertion Loss from port indicated to Downlink Input test port VHF Band 30dB at 154.0 161.3MHz UHF Low Band 30dB at 460.4 460.5MHz UHF Mid Band 30dB at 482.5 483.8MHz UHF High Band 30dB at 507.0 507.3MHz 800MHz Band 30dB at 856.0 861.0MHz 4.5.4. Downlink Input Shelf 80-301407 Illustrations 4.5.4.1. Rear View G F E D C 5 4 3 2 1 DOWNLINK INPUT DOWNLINK INPUT TEST PORT A B H A B C D E F G H Downlink Input from Radiating Cable Downlink Input Test Port (30dB Tap) Port 1. Downlink VHF Output to VHF Amplifier Shelf 80-301409 Port 2. Downlink UHF Lowband Output to UHF Lowband Amplifier Shelf 80-301410 Port 3. Downlink UHF Midband Output to UHF Midband Amplifier Shelf 80-301410 Port 4. Downlink UHF Highband Output to UHF Highband Amplifier Shelf 80-301410 Port 5. Downlink 800MHz Output to 800MHz Amplifier Shelf 80-301411 Earth Connection Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 83 of 148 4.5.5. Downlink Input Shelf 80-301407 Major Sub Components section Component Component Part Description Part 4.5.5.1. 02-010701 4.5.5.2. 02-010901 4.5.5.3. 07-004815 4.5.5.4. 07-005754 4.5.5.5. 07-022005 Bandpass Filter Bandpass Filter Crossband Splitter/Coupler 550/800MHz Crossband Splitter/Coupler VHF/UHF 30dB Bi-Directional Coupler Qty Per Assembly 2 1 1 1 1 4.5.5.1. Bandpass Filter (02-010701) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50 load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. 02-010701 Specification PARAMETER SPECIFICATION UHF Low Downlink 460.4 to 460.5 MHz Passband Frequency UHF Mid Downlink 482.5 to 483.8 MHz Bandwidth UHF Low 0.1 MHz UHF Mid 1.3 MHz Number of sections 5 Insertion loss 2.5 dB (typical) VSWR better than 1.2:1 Connectors SMA Power Handling 100W max operation -20C to +60C storage -40C to +70C Weight 3 kg (typical) Temperature range 4.5.5.2. Bandpass Filter 02-010901 Bandpass Filter 02-010901 is a multi-section design with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of helical & combline design respectively, and are carefully aligned during manufacture loss, VSWR and intermodulation characteristics of the unit. The body and tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50 load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. to optimise in order insertion the Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 84 of 148 02-010901 specification SPECIFICATION PARAMETER Passband Frequency Bandwidth Downlink 507.0 to 507.3MHz Downlink 0.3 MHz Insertion Loss 2.9 dB (typical) Power Rating 50W Impedance 50 VSWR Better than 1.2:1 Connectors SMA Weight 3Kg (approximately) 4.5.5.3. Crossband Splitter/Coupler 550/800MHz (07-004815) The purpose of Crossband Splitter/Coupler (07-004815) is to split or combine RF signals from different parts of the frequency spectrum. It is a 3 port device comprising two filters, one a low pass, the other a high pass, connected to a common input/output. The couplers are housed in a machined aluminium casing having a centre screening wall between the filter sections and lid secured by screws at frequent intervals over its perimeter to obtain a tight seal and to ensure linearity and stability of response. 07-004815 Specification Parameter Passband Frequencies Insertion loss Isolation between Bands VSWR Impedance Power rating operation storage RF Connectors Weight Temperature range Low Pass Port 380 to 550MHz High Pass Port 800 to 960MHz
<0.5dB
>50dB
<0.5dB
>50dB 1.3:1 50 ohm 50W
-20C to +60C
-40C to +70C SMA (female)
<1kg 4.5.5.4. Crossband Splitter/Coupler VHF/UHF (07-005754) The purpose of Crossband Splitter/Coupler (07-005754) is to split or combine RF signals from different parts of the frequency spectrum. It is a 3 port device comprising two filters, one a low pass, the other a high pass, connected to a common input/output. The couplers are housed in a machined aluminium casing having a centre screening wall between the filter sections and lid secured by screws at frequent intervals over its perimeter to obtain a tight seal and to ensure linearity and stability of response. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 85 of 148 07-005754 Specification Parameter Passband Frequencies Insertion loss Return loss Isolation between Bands Impedance Power rating operation storage RF Connectors Weight Temperature range Low Pass Port 70 to 175 MHz High Pass Port 380 to 500 MHz
<0.5dB
<0.5dB
>14dB typical
>14dB typical
>60dB
>60dB 50 ohm 50W
-20C to +60C
-40C to +70C SMA (female)
<1kg 4.5.5.5. 30dB Bi-Directional Coupler (07-022005) The purpose of these couplers is to tap off known portions (in this case 30dB) of RF signal from transmission lines and to combine them, for example though splitter units for different purposes
(alarms/monitoring etc.), whilst maintaining an accurate 50 load to all ports/interfaces throughout the specified frequency range. 07-022005 is a Bi-Directional device and as such will couple 30dB of signal whichever direction the signal is traveling. 07-022005 Specification PARAMETER SPECIFICATION Frequency Range 100kHz 2.7GHz Mainline Insertion Loss < 1.0 dB Coupling Loss 30 dB Coupling Loss Tolerance +/-2.0 dB VSWR Mainline Better than 1.4:1 Impedance 50 Power Handling (CW) 5W Outline (W x D x H) 44.5mm x 41mm x 27mm (ex. connectors) Connectors SMA (female) on all ports Case Material Aluminium Finish Iridite NCP Operating Temperature -20 to +55C Weather Protection IP54 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 86 of 148 4.6. Downlink Output Shelf 80-301408 Downlink Output Shelf 80-301408 is part of the main Splitter/Combiner assembly. Signals are received from the various amplification stages and then combined into a single signal which is output to the radiating cable. The unit is housed in a 4U, 19 rack mount case which is mounted in Rack 2 Ports labelled A to D (Annotated A to D in section 4.6.4.1.) are the Downlink inputs from the amplification stages. The Downlink signal leaves the Downlink Output Shelf 80-301408 for the radiating cable via the port labelled DOWNLINK OUTPUT (F in section 4.6.4.1.) and there is a 30dB test port labelled DOWNLINK OUTPUT TEST PORT (G in section 4.6.4.1.). Downlink Output Shelf 80-301408 also incorporates bandpass filtering for the three UHF bands, the filters are placed in the RF path before the outputs to the radiating cable. A B C D E 4.6.1. Downlink Output Shelf 80-301408 System Schematic Downlink Output Shelf 80-301408 02-010701 460.4 to 450.5MHz 02-010701 482.5 to 483.8MHz 02-010901 07-005745 507.0 to 507.3MHz G F 07-004815 07-018005 Port A. Downlink VHF Input from VHF Amplifier Shelf 80-301409 Port B. Downlink UHF Lowband Input from UHF Lowband Amplifier Shelf 80-301410 Port C. Downlink UHF Midband Input from UHF Midband Amplifier Shelf 80-301410 Port D. Downlink UHF Highband Input from UHF Highband Amplifier Shelf 80-301410 Port E. Downlink 800MHz Input from 800MHz Amplifier Shelf 80-301411 Downlink Output to Radiating Cable A B C D E F G Downlink Output Test Port (30dB Tap) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 87 of 148 4.6.2. Downlink Output Shelf 80-301408 Outline Drawing Drawing Number 80-301498 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 88 of 148 4.6.3. Downlink Output Shelf 80-301408 Specification PARAMETER SPECIFICATION Insertion Loss from port indicated to Downlink Output VHF Band from port A < 1.0dB at 154.0 161.3MHz UHF Low Band from port B < 3.5dB at 460.4 460.5MHz UHF Mid Band from port C < 3.5dB at 482.5 -483.8MHz UHF High Band from port D < 4.0dB at 507.0 507.3MHz 800MHz Band from port E < 1.0dB at 856.0 861.0MHz Insertion Loss from port indicated to Downlink Output Test port VHF Band from port A 31.0dB at 154.0 161.3MHz UHF Low Band from port B 33dB at 460.4 460.5MHz UHF Mid Band from port C 33dB at 482.5 483.8MHz UHF High Band from port D 33dB at 507.0 507.3MHz 800MHz Band from port E 31dB at 856.0 861.0MHz 4.6.4. Downlink Output Shelf 80-301408 Illustrations 4.6.4.1. Rear View Port A. Downlink VHF Input from VHF Amplifier Shelf 80-301409 Port B. Downlink UHF Lowband Input from UHF Lowband Amplifier Shelf 80-301410 Port C. Downlink UHF Midband Input from UHF Midband Amplifier Shelf 80-301410 Port D. Downlink UHF Highband Input from UHF Highband Amplifier Shelf 80-301410 Port E. Downlink 800MHz Input from 800MHz Amplifier Shelf 80-301411 Downlink Output to Radiating Cable A B C D E F G Downlink Output Test Port (30dB Tap) H Earth Connection Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 89 of 148 4.6.5. Downlink Output Shelf 80-301408 Major Sub Components Section Component Component Part Description Part 4.5.5.1. 02-010701 4.5.5.2. 02-010901 4.5.5.3. 07-004815 4.5.5.4. 07-005754 4.5.5.1. 07-018005 Bandpass Filter Bandpass Filter Crossband Splitter/Coupler 550/800MHz Crossband Splitter/Coupler VHF/UHF 30dB Directional Coupler Qty Per Assembly 2 1 1 1 1 These components are identical to those in Downlink Input Shelf 80-301407 in section 4.5.5 with the exception of the 30dB Directional Coupler 07-018005 below 4.6.5.1. 30dB Directional Coupler (07-018005) The purpose of these couplers is to tap off known portions (in this case 30dB) of RF signal from transmission lines and to combine them, for example though splitter units for different purposes
(alarms/monitoring etc.), whilst maintaining an accurate 50 load to all ports/interfaces throughout the specified frequency range. 07-018005 is a Uni-Directional device and as such will only couple 30dB of signal in one direction. 07-018005 Specification PARAMETER SPECIFICATION Frequency Range 70 MHz - 1000MHz Mainline Insertion Loss <0.5 Coupling Loss 30 dB VSWR Mainline Better than 1.3:1 Impedance 50 Power Handling (CW) 100W Outline (W x D x H) 176mm x 104mm x 24mm (ex. connectors) Connectors N (female) on all ports Case Material Aluminium Finish Iridite NCP Temperature range Weather Protection IP54 operation -20C to +60C storage -40C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 90 of 148 4.7. Uplink Input Shelf 80-301407 Uplink Input Shelf 80-301407 is part of the main Splitter/Combiner assembly. Signals are received from the leaky feeder and are then split into their various separate paths before being amplified by external band specific amplifiers The unit is housed in a 4U, 19 rack mount case which is mounted in Rack 1 Uplink signals are received at the port labelled UPLINK INPUT (Annotated A in the picture in section 4.7.4.1.) and there is a 30dB test port labelled UPLINK INPUT TEST PORT (B in section 4.7.4.1.). Ports labelled F to J (Annotated C to G in section 4.7.4.1.) are the Uplink Outputs to the amplification stages Uplink Input Shelf 80-301407 also incorporates bandpass filtering for the three UHF bands, the filters are placed in the RF path before the outputs to the external amplification stages C D E F G 4.7.1. Uplink Input Shelf 80-301407 System Schematic Uplink Input Shelf 80-301407 02-010701 465.4 to 465.5MHz 02-010701 485.7 to 486.8MHz 02-010901 07-005745 510.0 to 510.3MHz B A 07-004815 07-022005 A B C D E F G Uplink Input from Radiating Cable Uplink Input Test Port (30dB Tap) Port F. Uplink VHF Output to VHF Amplifier Shelf 80-301409 Port G. Uplink UHF Lowband Output to UHF Lowband Amplifier Shelf 80-301410 Port H. Uplink UHF Midband Output to UHF Midband Amplifier Shelf 80-301410 Port I. Uplink UHF Highband Output to UHF Highband Amplifier Shelf 80-301410 Port J. Uplink 800MHz Output to 800MHz Amplifier Shelf 80-301411 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 91 of 148 4.7.2. Uplink Input Shelf 80-301407 Outline Drawing Drawing Number 80-301497 see section 4.5.2. 4.7.3. Uplink Input Shelf 80-301407 Specification PARAMETER SPECIFICATION Insertion Loss from from Uplink Input port to port indicated VHF Band to port F < 1.0dB at 155.7 160.8MHz UHF Low Band to port G < 3.5dB at 465.4 465.5MHz UHF Mid Band to port H < 3.5dB at 485.7 -486.8MHz UHF High Band to port I < 4.0dB at 510.0 510.3MHz 800MHz Band to port J < 1.0dB at 811.0 816.0MHz Insertion Loss from port indicated to Uplink Input test port VHF Band 31dB at 155.7 160.8MHz UHF Low Band 33dB at 465.4 465.5MHz UHF Mid Band 33dB at 485.7 486.8MHz UHF High Band 33dB at 510.0 510.3MHz 800MHz Band 31dB at 811.0 816.0MHz 4.7.4. Uplink Input Shelf 80-301407 Illustrations 4.7.4.1. Rear View G F E D C J I H G F UPLINK INPUT UPLINK INPUT TEST PORT A B H A B C D E F G H Uplink Input from Radiating Cable Uplink Input Test Port (30dB Tap) Port F. Uplink VHF Output to VHF Amplifier Shelf 80-301409 Port G. Uplink UHF Lowband Output to UHF Lowband Amplifier Shelf 80-301410 Port H. Uplink UHF Midband Output to UHF Midband Amplifier Shelf 80-301410 Port I. Uplink UHF Highband Output to UHF Highband Amplifier Shelf 80-301410 Port J. Uplink 800MHz Output to 800MHz Amplifier Shelf 80-301411 Earth Connection Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 92 of 148 4.7.5. Uplink Input Shelf 80-301407 Major Sub Components section Component Component Part Description Part 4.5.5.1. 02-010701 4.5.5.2. 02-010901 4.5.5.3. 07-004815 4.5.5.4. 07-005754 4.5.5.5. 07-022005 Bandpass Filter Bandpass Filter Crossband Splitter/Coupler 550/800MHz Crossband Splitter/Coupler VHF/UHF 30dB Bi-Directional Coupler Qty Per Assembly 2 1 1 1 1 These components are identical to those in Downlink Input Shelf 80-301407 in section 4.5.5. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 93 of 148 4.8. Uplink Output Shelf 80-301407 Uplink Output Shelf 80-301407 is part of the main Splitter/Combiner assembly. Signals are received from the various amplification stages and then combined into a single signal which is output to the leaky feeder. The unit is housed in a 4U, 19 rack mount case which is mounted in Rack 1. Ports labelled 6 to 10 (Annotated A to E in section 4.8.4.1.) are the Uplink inputs from the amplification stages. The Uplink signal leaves the Uplink Output Shelf 80-301407 for the leakey feeder via the port labelled UPLINK OUTPUT (F in section 4.8.4.1.) and there is a 30dB test port labelled UPLINK OUTPUT TEST PORT (G in section 4.8.4.1.). 4.8.1. Uplink Output Shelf 80-301407 System Schematic Uplink Output Shelf 80-301407 02-010701 465.4 to 465.5MHz 02-010701 07-005745 485.7 to 486.8MHz 02-010901 510.0 to 510.3MHz G F 07-022005 07-004815 A B C D E Port 6. Uplink VHF Input from VHF Amplifier Shelf 80-301409 Port 7. Uplink UHF Lowband Input from UHF Lowband Amplifier Shelf 80-301410 Port 8. Uplink UHF Midband Input from UHF Midband Amplifier Shelf 80-301410 Port 9. Uplink UHF Highband Input from UHF Highband Amplifier Shelf 80-301410 Port 10. Uplink 800MHz Input from 800MHz Amplifier Shelf 80-301411 Uplink Output to Radiating Cable A B C D E F G Uplink Output Test Port (30dB Tap) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 94 of 148 4.8.2. Uplink Output Shelf 80-301407 Outline Drawing Drawing Number 80-301497 see section 4.5.2. 4.8.3. Uplink Output Shelf 80-301407 Specification PARAMETER SPECIFICATION Insertion Loss from port indicated to Uplink Output VHF Band from port 6 < 1.0dB at 155.7 160.8MHz UHF Low Band from port 7 < 3.5dB at 465.4 465.5MHz UHF Mid Band from port 8 < 3.5dB at 485.7 -486.8MHz UHF High Band from port 9 < 4.0dB at 510.0 510.3MHz 800MHz Band from port 10 < 1.0dB at 811.0 816.0MHz Insertion Loss from port indicated to Uplink Output Test port VHF Band from port 6 31dB at 155.7 160.8MHz UHF Low Band from port 7 33dB at 465.4 465.5MHz UHF Mid Band from port 8 33dB at 485.7 486.8MHz UHF High Band from port 9 33dB at 510.0 510.3MHz 800MHz Band from port 10 31dB at 811.0 816.0MHz 4.8.4. Uplink Output Shelf 80-301407 Illustrations 4.8.4.1. Rear View Port 6. Uplink VHF Input from VHF Amplifier Shelf 80-301409 Port 7. Uplink UHF Lowband Input from UHF Lowband Amplifier Shelf 80-301410 Port 8. Uplink UHF Midband Input from UHF Midband Amplifier Shelf 80-301410 Port 9. Uplink UHF Highband Input from UHF Highband Amplifier Shelf 80-301410 Port 10. Uplink 800MHz Input from 800MHz Amplifier Shelf 80-301411 Uplink Output to Radiating Cable A B C D E F G Uplink Output Test Port (30dB Tap) H Earth Connection Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 95 of 148 4.8.5. Uplink Output Shelf 80-301407 Major Sub Components section Component Component Part Description Part 4.5.5.1. 02-010701 4.5.5.2. 02-010901 4.5.5.3. 07-004815 4.5.5.4. 07-005754 4.5.5.5. 07-022005 Bandpass Filter Bandpass Filter Crossband Splitter/Coupler 550/800MHz Crossband Splitter/Coupler VHF/UHF 30dB Bi-Directional Coupler Qty Per Assembly 2 1 1 1 1 These components are identical to those in Downlink Input Shelf 80-301407 in section 4.5.5. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 96 of 148 4.9. VHF Amplifier Shelf 80-301409 VHF Amplifier Shelf 80-301409 provides the amplification stages for the VHF paths, The unit is housed in a 4U, 19 rack mount shelf which is mounted in Rack 1 The Downlink VHF signal is received at the port labelled DOWNLINK I/P (Annotated A in the picture in section 4.9.4.2.). The Downlink VHF path passes through a bandpass filter to remove out of band noise and then a switched attenuator providing 0 to 30 dB of RF signal attenuation. After leaving the attenuator the VHF Downlink signal passes through a 5W amplification stage, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. After leaving the Amplification/AGC stage the VHF Downlink signal passes through a second bandpass filter and exits the Shelf via the port labelled DOWNLINK O/P ( B in section 4.9.4.2.). The Uplink VHF Signal is received at the port labelled UPLINK I/P (C in section 4.9.4.2.). The VHF Uplink path passes through a bandpass filter to remove out of band noise and then a switched attenuator providing 0 to 30 dB of RF signal attenuation. After leaving the attenuator the VHF Uplink signal passes through a 5W amplification stage, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. After leaving the Amplification/AGC stage the VHF Uplink signal passes through a second bandpass filter and exits the Shelf via the port labelled UPLINK O/P (D in section 4.9.4.2.). VHF Amplifier Shelf 80-301409 is provided with a 24V DC input to power the amplifier modules within and those amplifier modules are configured to provide alarm status reports. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 97 of 148 4.9.1. VHF Amplifier Shelf 80-301409 System Diagram Drawing Number 80-301489 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 98 of 148 4.9.2. VHF Amplifier Shelf 80-301409 Outline Drawing Drawing Number 80-301499 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 99 of 148 4.9.3. VHF Amplifier Shelf 80-301409 Specification Parameter Specification Downlink Downlink Passband 154.0 to 161.5MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) +34.0dBm ALC setting 1dB below P1dB 3rd Order Intercept point +45.0dBm Uplink Uplink Passband 155.5 161.0MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) +34.0dBm ALC setting +27dBm 3rd Order Intercept point +45.0dBm Noise Figure < 10dB Mechanical Specification Mechanical 4U, 19 Rack Mount RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per path Power Supply 24V DC 4.9.4. VHF Amplifier Shelf 80-301409 Illustrations 4.9.4.1. Front View A B C Green LED Power On Red LED Alarm VHF Uplink path Red LED Alarm VHF Downlink path Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 100 of 148 4.9.4.2. Rear View I H ALARM FUSE T 3.15A 24v DC I/P B DOWNLINK O/P UPLINK O/P DOWNLINK I/P UPLINK I/P D C A 0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB 2dB 4dB UPLINK 8dB 16dB 2dB 8dB 4dB DOWNLINK 16dB F E J VHF Downlink Input from Downlink Input Shelf 80-301407 Port 1 VHF Downlink Output to Downlink Output Shelf 80-301408 Port A VHF Uplink Input from Uplink Input Shelf 80-301407 Port F VHF Uplink Output to Uplink Output Shelf 80-301407 Port 6 VHF Downlink Switched Attenuator 0 to 30 dB VHF Uplink Switched Attenuator 0 to 30 dB 24V DC Input 3.15A Fuse for 24V DC Input Alarm Output Earth Connection G A B C D E F G H I J 4.9.5. VHF Amplifier Shelf 80-301409 Major Sub Components Section Component Component Part Description 4.9.5.1. 4.9.5.2. 4.9.5.3. 4.9.5.4. 4.9.5.5. 4.9.5.6. Part 01-002503 10-000701 12-025602 17-001101 17-001201 20-001602 94-100004 Bandpass Filter Switched Attenuator 0.25Watt, 0 - 30dB VHF Power Amplifier 5W AGC Detector Assembly AGC Attenuator Assembly 24V Dual Relay Assembly Dual Diode Assembly Qty Per Assembly 4 2 2 2 2 1 1 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 101 of 148 4.9.5.1. Bandpass Filter (01-002503) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of helical design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50 load at the input and output ports. Being passive devices, the bandpass filters have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 01-002503 Specification SPECIFICATION PARAMETER Bandpass Frequency Downlink 154.0 MHz to 161.5 MHz Uplink 155.5 MHz to 161.0 MHz Bandwidth Downlink 7.5MHz Uplink 5.5MHz No. of sections 6 Insertion loss 1.2dB VSWR Better than 1.2:1 Connectors SMA Temperature range Power handling 100W maximum
-20C to +60C store -40C to +70C operational Weight 3 kg Size 384 x 82.5 x 56.4mm 4.9.5.2. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50 impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy 1.0 dB Frequency Range DC to 1GHz Impedance 50 Connectors SMA VSWR 1.3:1 Weight 0.2kg Temperature range operation -20C to +60C storage -40C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 102 of 148 4.9.5.3. VHF Power Amplifier 5W (12-025602) Power amplifier 12-025602 is a multi-stage, solid state power amplifier. Class A circuitry is employed throughout the device to ensure excellent linearity over a wide dynamic frequency range. All the semi-
conductor devices are very conservatively rated to ensure low device junction temperatures and a long, trouble free working lifetime. There is a Current Fault Alarm Function, which indicates failure of each RF transistor with an open collector of a NPN transistor. A relay is fitted to indicate the failure by voltage free change over the relay contacts. The power amplifier should require no maintenance over its operating life. Under no circumstances should the cover be removed or the side adjustments disturbed unless it is certain that the amplifier has failed; since it is critically aligned during manufacture and any re-alignment will require extensive test equipment. The unit housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-025602 Specification PARAMETER SPECIFICATION Frequency range 108 to 174 MHz (as required) Maximum RF output > 5Watts Gain 34 dB 1dB compression point +37 dBm 3rd order intercept point +48 dBm In / RL 16 dB Out / RL 15 dB Noise Figure 9.5 dB Max Connectors SMA female Supply 24 +/- 0.5 Vdc @ 1040 mA Max Temperature range operational
-10C to +60C storage -20C to +70C 7-Way Connector Pin-out details Connector Pin A1 (large pin) A2 (large pin) Signal
+24V DC GND 1 2 3 4 5 Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 103 of 148 4.9.5.4. Automatic Gain Control 17-001101 17-001201 AGC Detector Assembly AGC Attenuator Assembly VHF Amplifier Shelf 80-301409 is fitted with two Automatic Gain Control (AGC) systems, one for the Dwonlink amd one for the Uplink The Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path before the amplification stage(s) The attenuator comprises a 50 P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50 transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 104 of 148 4.9.5.5. 24V Relay Dual Assembly (20-001602) The General Purpose 24V Dual Relay Board (20-001602) allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays RL1 and RL2, with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. Its common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 20-001602 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm Threshold Vcc - 1.20 volt +15%
Alarm output relay contacts:
Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0A/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Temperature range Connector details Screw terminals
-10C to +60C storage -20C to +70C operational 4.9.5.6. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 105 of 148 4.10. UHF Lowband Amplifier Shelf 80-301410 UHF Lowband Amplifier Shelf 80-301410 provides the amplification stages for the UHF Lowband paths, The unit is housed in a 4U, 19 rack mount shelf which is mounted in Rack 1 The Downlink UHF Lowband signal is received at the port labelled UHF DOWNLINK I/P (Annotated A in section 4.10.4.2.). The signal passes through a switched attenuator providing 0 to 30 dB of RF signal attenuation and then into the amplification stage. The Downlink UHF Lowband amplification stage is provided by two amplifier modules, the first is a 15dB gain Low Power Amplifier and the second is a 20W, 23dB gain power amplifier. Both amplification stages are straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The input to the AGC detector is provided by the output of a 30dB tap. After leaving the Amplification/AGC stage the Downlink UHF Lowband signal exits the Shelf via the port labelled UHF DOWNLINK O/P (B in section 4.10.4.2.). The Uplink UHF Lowband signal is received at the port labelled UHF UPLINK I/P (Annotated C in section 4.10.4.2.). The signal passes into a Low Noise Amplifier providing 15dB of gain and then into a switched attenuator providing 0 to 30 dB of RF signal attenuation. After the attenuator the Uplink UHF Lowband signal passes into a second stage of amplification provided by a 5W, 30dB gain Power Amplifier, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The Uplink UHF Lowband signal exits the Shelf via the port labelled UHF UPLINK O/P (D in section 4.10.4.2.). UHF Lowband Amplifier Shelf 80-301410 is provided with a 24V DC input to power the amplifier modules within and those amplifier modules are configured to provide alarm status reports. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 106 of 148 4.10.1. UHF Lowband Amplifier Shelf 80-301410 System Diagram Drawing Number 80-301490 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 107 of 148 4.10.2. UHF Lowband Amplifier Shelf 80-301410 Outline Drawing Drawing Number 80-3014100 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 108 of 148 4.10.3. UHF Lowband Amplifier Shelf 80-301410 Specification Parameter Specification Downlink Downlink Passband 460.4 to 460.5MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) +42.5dBm ALC setting 1dB below P1dB 3rd Order Intercept point +53.5dBm Uplink Uplink Passband 465.4 465.5MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) +36.5dBm ALC setting +27dBm 3rd Order Intercept point > +48.0dBm Noise Figure < 3.0dB Mechanical Specification Mechanical 4U 19 Rack Mount RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per path Power Supply 24V DC 4.10.4. UHF Lowband Amplifier Shelf 80-301410 Illustrations 4.10.4.1. Front View A B C Green LED Power On Red LED Alarm UHF Lowband Uplink path Red LED Alarm UHF Lowband Downlink path Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 109 of 148 4.10.4.2. Rear View N.B. UPLINK 465.4 - 465.5 MHz DOWNLINK 460.4 - 460.5 MHz I H ALARM FUSE T 10A 24v DC I/P B UHF DOWNLINK O/P UHF UPLINK O/P UHF DOWNLINK I/P UHF UPLINK I/P UPLINK DOWNLINK 465.4 - 465.5 MHz 460.4 - 460.5 MHz D C A 0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB 2dB 4dB UPLINK 8dB 16dB 2dB 4dB 8dB DOWNLINK 16dB G F E J A B C D E F G H I J UHF Lowband Downlink Input from Downlink Input Shelf 80-301407 Port 2 UHF Lowband Downlink Output to Downlink Output Shelf 80-301408 Port B UHF Lowband Uplink Input from Uplink Input Shelf 80-301407 Port G UHF Lowband Uplink Output to Uplink Output Shelf 80-301407 Port 7 UHF Lowband Downlink Switched Attenuator 0 to 30 dB UHF Lowband Uplink Switched Attenuator 0 to 30 dB 24V DC Input 10A Fuse for 24V DC Input Alarm Output Earth Connection 4.10.5. UHF Lowband Amplifier Shelf 80-301410 Major Sub Components Section Component Component Part Description Part Qty Per Assembly 4.10.5.1. 4.10.5.2. 4.10.5.3. 4.10.5.4. 4.10.5.5. 4.10.5.6. 4.10.5.7. 4.10.5.8. 4.10.5.9. 4.10.5.10. 4.10.5.11. 30dB Directional Coupler Low Noise Amplifier 20W Power Amplifier 07-002908 10-000701 Switched Attenuator 0.25Watt, 0 - 30dB 11-005401 12-016301 12-021601 TETRA Power Amplifier 5W 12-021801 TETRA Power Amplifier 1W 17-001101 AGC Detector Assembly 17-001105 AGC Detector Assembly (Logarithmic) 17-001201 AGC Attenuator Assembly 24V Dual Relay Assembly 20-001602 80-008909 12V Relay Assembly 94-100004 Dual Diode Assembly 96-200024 DC/DC Converter 1 2 1 1 1 1 1 1 2 1 1 1 1 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 110 of 148 4.10.5.1. 30dB Directional Coupler (07-002908) The purpose of these couplers is to tap off known portions of RF signal from transmission lines and to combine them, for example through splitter units for different purposes (alarms/monitoring etc.), whilst maintaining an accurate 50 load to all ports/interfaces throughout the specified frequency range. They are known as directional couplers as they couple power from the RF mainline in one direction only. Directional Coupler 07-002908 is configured to tap off 30dB. 07-002908 Specification PARAMETER SPECIFICATION Frequency range 50 - 1000MHz Insertion loss <0.3dB Coupling level
-30dB Rejection N/A Weight <200gms Temperature range Connectors N type, female
-20C to +60C
-40C to +70C operation storage 4.10.5.2. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50 impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy 1.0 dB Frequency Range DC to 1GHz Impedance 50 Connectors SMA VSWR 1.3:1 Weight 0.2kg Temperature range operation -20C to +60C storage -40C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 111 of 148 4.10.5.3. Low Noise Amplifier (11-005401) The 15dB gain low noise amplifier used in the unit is a double stage solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, the complete amplifier should be replaced. The amplifier is housed in an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type for DC and alarm outputs. 11-005401 Specification PARAMETER SPECIFICATION Frequency range Bandwidth 1dB compression point 3rd order intercept Gain VSWR Input return loss Noise figure Connectors Supply operational storage Size Weight Temperature range 380 - 500MHz
<100MHz (as required, tuneable)
>+20dBm
>+33dBm
>15.5dB (typical) better than 1.5:1
>14dB
<2.0dB (typical) SMA female 115mA at 12V DC
-10C to +60C
-40C to +70C 88 x 50 x 34mm (ex. connectors) 0.26kg LNA D Connector Pin-out details Signal Connector pin 1 2 3 4 5 6 7 8 9
+ve input (10-24V) GND Alarm relay O/P bad Alarm relay common Alarm relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad 9-Way Pin-Out Graphical Representation Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 112 of 148 4.10.5.4. TETRA Power Amplifier 20W (12-016301) This amplifier is a Class A 20W power amplifier from 380MHz to 470MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. It is housed is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. Note the large diameter DC power input pins (1 & 2) fitted to reduce volt-drop/arcing. 12-016301 Specification PARAMETER SPECIFICATION Frequency range 380-470MHz Small signal gain 23dB Gain flatness 1.7dB I/O Return loss >18dB 1dB compression point 43dBm OIP3 55dBm Supply voltage 24V DC Supply current 3.8Amps (Typical) Temperature range operational
-10C to +60C storage -20C to +70C Weight <2kg (no heatsink) 7-Way Connector Pin-out details Signal Connector Pin A1 (large pin) A2 (large pin) 1 2 3 4 5
+10-24V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 113 of 148 4.10.5.5. TETRA Power Amplifier 5W (12-021601) Power amplifier 12-021601 is a multi-stage, solid state power amplifier. Class A circuitry is employed throughout the device to ensure excellent linearity over a wide dynamic frequency range. All the semi-
conductor devices are very conservatively rated to ensure low device junction temperatures and a long, trouble free working lifetime. The power amplifier should require no maintenance over its operating life. Under no circumstances should the cover be removed or the side adjustments disturbed unless it is certain that the amplifier has failed; since it is critically aligned during manufacture and any re-alignment will require extensive test equipment. The unit housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-021601 Specification PARAMETER SPECIFICATION Frequency range: 380-470MHz (as required) Bandwidth: 10-40MHz (typical, tuned to spec.) Maximum RF output: 5Watts Gain: 30dB 1dB compression point: +37.5dBm 3rd order intercept point: +50dBm VSWR: better than 1.5:1 Connectors: SMA female Supply: 1.9Amps @ 12V DC Weight: 1kg (excluding heatsink) Temperature range:
operational: -10C to +60C storage: -20C to +70C 7-Way Connector Pin-out details Signal Connector Pin A1 (large pin) A2 (large pin) 1 2 3 4 5
+10-24V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) 7-Way Pin-Out Graphical Representation A1 1 2 A2 3 4 5 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 114 of 148 3.10.5.6. Low Power Amplifier (1Watt) (12-021801) The low power amplifier used is a 1 stage balanced configuration, solid-state amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. 12-021801 Specification PARAMETER SPECIFICATION Temperature -20 to +70 C Frequency Range 380 - 500 MHz Small Signal Gain 15.5 +/- 0.5 dB Gain Flatness 0.7 dB p-p Max
Gain vs. Temperature 0.7 dB Max In RL 20 dB Min Out RL 20 dB Min Output Power @ 1dB Compression Point 30.5 dBm Min Output 3rd Order IP 41.5 dBm Min Temperature range Noise Figure 6 dB Max DC Supply Voltage 10-15 Vdc DC Supply Current 540 mA Max operational:
storage:
Weight: <0.5 kg
-10C to +60C
-40C to +100C Size: 110.5 x 66mm x 24.6mm 9-Way Connector Pin-outs Connector pin 1 2 3 4 5 6 7 8 9 Signal
+ve input (10-15V) GND Alarm relay O/P bad Alarm relay common Alarm relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad 9-Way Pin-Out Graphical Representation 1 2 3 4 5 6 7 8 9 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 115 of 148 4.10.5.7. Automatic Gain Control 17-001101 17-001105 17-001201 AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly The three UHF Amplifier Shelves 80-301410 (Lowband, Midband and Highband) are each fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The Downlink UHF paths are fitted with logarithmic detector (17-001105), and attenuator (17-001201) the Uplink UHF paths are fitted with linear detector (17-001101) and attenuator (17-001201) The Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path before the amplification stage(s) The attenuator comprises a 50 P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50 transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 116 of 148 4.10.5.8. 24V Relay Dual Assembly (20-001602) The General Purpose 24V Dual Relay Board (20-001602) allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays RL1 and RL2, with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. Its common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 20-001602 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm Threshold Vcc - 1.20 volt +15%
Alarm output relay contacts:
Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0A/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Temperature range Connector details Screw terminals
-10C to +60C storage -20C to +70C operational 4.10.5.9. 12V Relay Assembly 80-008909 Relay Board (80-008909) allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. Its common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. This relay board also carries an LED to serve as a Status OK indicator which is illuminated during normal operation. 80-008909 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15%
Alarm output relay contacts Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0A/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Temperature range Connector details Screw terminals
-10C to +60C storage -20C to +70C operational Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 117 of 148 4.10.5.10. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries. 4.10.5.11. DC/DC Converter, 24V in, 12V 5A out (96-200024) This unit it is an O.E.M high power device with a 5 amp @ 12V (60Watts) output capability used to derive a 12V fixed voltage power supply rail from a 24V supply. In the event of failure this unit should not be repaired, only replaced. 96-200024 Specification PARAMETER Input Voltage range 18-28V DC SPECIFICATION Output voltage 12V0.5V Max. current load 5.0 Amps Temperature range operation -10C to +60C storage -20C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 118 of 148 4.11. UHF Midband Amplifier Shelf 80-301410 UHF Midband Amplifier Shelf 80-301410 provides the amplification stages for the UHF Midband paths, The unit is housed in a 4U, 19 rack mount shelf which is mounted in Rack 1 The Downlink UHF Midband signal is received at the port labelled UHF DOWNLINK I/P (Annotated A in section 4.11.4.2.). The signal passes through a switched attenuator providing 0 to 30 dB of RF signal attenuation and then into the amplification stage. The Downlink UHF Midband amplification stage is provided by two amplifier modules, the first is a 15dB gain Low Power Amplifier and the second is a 20W, 23dB gain power amplifier. Both amplification stages are straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The input to the AGC detector is provided by the output of a 30dB tap. After leaving the Amplification/AGC stage the Downlink UHF Midband signal exits the Shelf via the port labelled UHF DOWNLINK O/P (B in section 4.11.4.2.). The Uplink UHF Midband signal is received at the port labelled UHF UPLINK I/P (Annotated C in section 4.11.4.2.). The signal passes into a Low Noise Amplifier providing 15dB of gain and then into a switched attenuator providing 0 to 30 dB of RF signal attenuation. After the attenuator the Uplink UHF Midband signal passes into a second stage of amplification provided by a 5W, 30dB gain Power Amplifier, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The Uplink UHF Midband signal exits the Shelf via the port labelled UHF UPLINK O/P (D in section 4.11.4.2.). UHF Midband Amplifier Shelf 80-301410 is provided with a 24V DC input to power the amplifier modules within and those amplifier modules are configured to provide alarm status reports. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 119 of 148 4.11.1. UHF Lowband Amplifier Shelf 80-301410 System Diagram Drawing Number 80-301490 see section 4.10.1. 4.11.2. UHF Midband Amplifier Shelf 80-301410 Outline Drawing Drawing Number 80-3014100 see section 4.10.2. 4.11.3. UHF Midband Amplifier Shelf 80-301410 Specification Parameter Specification Downlink Downlink Passband 482.5 to 483.8MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) +42.5dBm ALC setting 1dB below P1dB 3rd Order Intercept point +53.5dBm Uplink Uplink Passband 485.7 to 486.8MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) +36.5dBm ALC setting +27dBm 3rd Order Intercept point +48.0dBm Noise Figure < 3.0dB Mechanical Specification Mechanical 4U 19 Rack Mount RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per path Power Supply 24V DC 4.11.4. UHF Lowband Amplifier Shelf 80-301410 Illustrations 4.11.4.1. Front View A B C Green LED Power On Red LED Alarm UHF Midband Uplink path Red LED Alarm UHF Midband Downlink path Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 120 of 148 4.11.4.2. Rear View N.B. UPLINK 485.7 - 486.8 MHz DOWNLINK 482.5 - 483.8 MHz I H ALARM FUSE T 10A 24v DC I/P B UHF DOWNLINK O/P UHF UPLINK O/P UHF DOWNLINK I/P UHF UPLINK I/P UPLINK DOWNLINK 485.7 - 486.8 MHz 482.5 - 483.8 MHz D C A 0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB 2dB 4dB UPLINK 8dB 16dB 2dB 4dB 8dB DOWNLINK 16dB G F E J A B C D E F G H I J UHF Midband Downlink Input from Downlink Input Shelf 80-301407 Port 3 UHF Midband Downlink Output to Downlink Output Shelf 80-301408 Port C UHF Midband Uplink Input from Uplink Input Shelf 80-301407 Port H UHF Midband Uplink Output to Uplink Output Shelf 80-301407 Port 8 UHF Midband Downlink Switched Attenuator 0 to 30 dB UHF Midband Uplink Switched Attenuator 0 to 30 dB 24V DC Input 10A Fuse for 24V DC Input Alarm Output Earth Connection 4.11.5. UHF Midband Amplifier Shelf 80-301410 Major Sub Components The components for the UHF Midband Amplifier Shelf 80-301410 are exactly the same as those for UHF Lowband Amplifier Shelf 80-301410 in section 4.10.5 Section Component Component Part Description Qty Per Assembly 4.10.5.1. 4.10.5.2. 4.10.5.3. 4.10.5.4. 4.10.5.5. 4.10.5.6. 4.10.5.7. 4.10.5.8. 4.10.5.9. 4.10.5.10. 4.10.5.11. Part 07-002908 10-000701 11-005401 12-016301 12-021601 12-021801 17-001101 17-001105 17-001201 20-001602 80-008909 94-100004 96-200024 30dB Directional Coupler Switched Attenuator 0.25Watt, 0 - 30dB Low Noise Amplifier 20W Power Amplifier TETRA Power Amplifier 5W TETRA Power Amplifier 1W AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly 24V Dual Relay Assembly 12V Relay Assembly Dual Diode Assembly DC/DC Converter 1 2 1 1 1 1 1 1 2 1 1 1 1 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 121 of 148 4.12. UHF Highband Amplifier Shelf 80-301410 UHF Highband Amplifier Shelf 80-301410 provides the amplification stages for the UHF Highband paths, The unit is housed in a 4U, 19 rack mount shelf which is mounted in Rack 1 The Downlink UHF Highband signal is received at the port labelled UHF DOWNLINK I/P (Annotated A in section 4.12.4.2.). The signal passes through a switched attenuator providing 0 to 30 dB of RF signal attenuation and then into the amplification stage. The Downlink UHF Highband amplification stage is provided by two amplifier modules, the first is a 15dB gain Low Power Amplifier and the second is a 20W, 23dB gain power amplifier. Both amplification stages are straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The input to the AGC detector is provided by the output of a 30dB tap. After leaving the Amplification/AGC stage the Downlink UHF Highband signal exits the Shelf via the port labelled UHF DOWNLINK O/P (B in section 4.12.4.2.). The Uplink UHF Highband signal is received at the port labelled UHF UPLINK I/P (Annotated C in section 4.12.4.2.). The signal passes into a Low Noise Amplifier providing 15dB of gain and then into a switched attenuator providing 0 to 30 dB of RF signal attenuation. After the attenuator the Uplink UHF Highband signal passes into a second stage of amplification provided by a 5W, 30dB gain Power Amplifier, this amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. The Uplink UHF Highband signal exits the Shelf via the port labelled UHF UPLINK O/P (D in section 4.12.4.2.). UHF Highband Amplifier Shelf 80-301410 is provided with a 24V DC input to power the amplifier modules within and those amplifier modules are configured to provide alarm status reports. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 122 of 148 4.12.1. UHF Highband Amplifier Shelf 80-301410 System Diagram Drawing Number 80-301490 see section 4.10.1. 4.12.2. UHF Highband Amplifier Shelf 80-301410 Outline Drawing Drawing Number 80-3014100 see section 4.10.2. 4.12.3. UHF Highband Amplifier Shelf 80-301410 Specification Parameter Specification Downlink Downlink Passband 507.0 to 507.3MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) +42.5dBm ALC setting 1dB below P1dB 3rd Order Intercept point +53.5dBm Uplink Uplink Passband 510.0 to 510.3MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) +36.5dBm ALC setting +27dBm 3rd Order Intercept point +48.0dBm Noise Figure < 3.0dB Mechanical Specification Mechanical 4U 19 Rack Mount RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per path Power Supply 24V DC 4.12.4. UHF Highband Amplifier Shelf 80-301410 Illustrations 4.12.4.1. Front View A B C Green LED Power On Red LED Alarm UHF Highband Uplink path Red LED Alarm UHF Highband Downlink path Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 123 of 148 4.12.4.2. Rear View N.B. UPLINK 510.0 - 510.3 MHz DOWNLINK 507.0 - 507.3 MHz I H ALARM FUSE T 10A 24v DC I/P B UHF DOWNLINK O/P UHF UPLINK O/P UHF DOWNLINK I/P UHF UPLINK I/P UPLINK DOWNLINK 510.0 - 510.3 MHz 507.0 - 507.3 MHz D C A 0dB 0dB 0dB 0dB 0dB 0dB 0dB 0dB 2dB 4dB UPLINK 8dB 16dB 2dB 4dB 8dB DOWNLINK 16dB G F E J A B C D E F G H I J UHF Highband Downlink Input from Downlink Input Shelf 80-301407 Port 4 UHF Highband Downlink Output to Downlink Output Shelf 80-301408 Port D UHF Highband Uplink Input from Uplink Input Shelf 80-301407 Port I UHF Highband Uplink Output to Uplink Output Shelf 80-301407 Port 9 UHF Highband Downlink Switched Attenuator 0 to 30 dB UHF Highband Uplink Switched Attenuator 0 to 30 dB 24V DC Input 10A Fuse for 24V DC Input Alarm Output Earth Connection 4.12.5. UHF Highband Amplifier Shelf 80-301410 Major Sub Components The components for the UHF Highband Amplifier Shelf 80-301410 are exactly the same as those for UHF Lowband Amplifier Shelf 80-301410 in section 4.10.5 Section Component Component Part Description Qty Per Assembly Part 4.10.5.1. 4.10.5.2. 4.10.5.3. 4.10.5.4. 4.10.5.5. 4.10.5.6. 4.10.5.7. 07-002908 10-000701 11-005401 12-016301 12-021601 12-021801 17-001101 17-001105 17-001201 20-001602 4.10.5.8. 4.10.5.9. 80-008909 4.10.5.10. 94-100004 4.10.5.11. 96-200024 30dB Directional Coupler Switched Attenuator 0.25Watt, 0 - 30dB Low Noise Amplifier 20W Power Amplifier TETRA Power Amplifier 5W TETRA Power Amplifier 1W AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly 24V Dual Relay Assembly 12V Relay Assembly Dual Diode Assembly DC/DC Converter 1 2 1 1 1 1 1 1 2 1 1 1 1 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 124 of 148 4.13. 800MHz Amplifier Shelf 80-301411 800MHz Amplifier Shelf 80-301411 provides the amplification stages for the 800 MHz paths, The unit is housed in an 8U, 19 rack mount shelf which is mounted in Rack 2 The Downlink 800MHz signal is received at the port labelled DOWNLINK INPUT (Annotated A in the picture in section 4.13.4.2.). The Downlink 800MHz path passes through a bandpass filter to remove out of band noise and then a switched attenuator providing 0 to 30 dB of RF signal attenuation, after the Attenuator the signal passes through the first of two amplification stages. This first stage is provided by a low noise amplifier which gives approximately 19dB of gain. After the Low Noise Amplifier the Downlink 800MHz signal passes through the second amplification stage; the signal is first split into two equal paths and then each path is passed through a 20W power amplifier and then the two signal paths are re-combined. The second stage amplifiers are straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. After leaving the second stage amplifiers the Downlink 800MHz signal path passes through a second bandpass filter and exits the Shelf via the port labelled DOWNLINK OUTPUT ( B in section 4.13.4.2.). The Uplink 800MHz Signal is received at the port labelled UPLINK INPUT (C in section 4.13.4.2.). The Uplink 800MHz path passes through a bandpass filter to remove out of band noise and then into the first of two amplification stages, the first stage is provided by a low noise amplifier which gives approximately 19dB of gain; after leaving the Low Noise Amplifier the signal passes through a switched attenuator providing 0 to 30 dB of RF signal attenuation, After leaving the switched attenuator the Uplink 800MHz path passes through the second stage of amplification which is provided by a 5W power amplifier giving approx. 30dB of gain; this second amplification stage is straddled by an Automatic Gain Control assembly providing limiting to the output signals in the case of high input signals. After leaving the second amplification stage the Uplink 800MHz path passes through a second bandpass filter and exits the Shelf via the port labelled UPLINK OUTPUT (D in section 4.13.4.2.). 800MHz Amplifier Shelf 80-301411 is provided with a 24V DC input to power the amplifier modules within and those amplifier modules are configured to provide alarm status reports. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 125 of 148 4.13.1. 800MHz Amplifier Shelf 80-301411 System Diagram Drawing Number 80-301491 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 126 of 148 4.13.2. 800MHz Amplifier Shelf 80-301411 Outline Drawing Drawing Number 80-3014101 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 127 of 148 4.13.3. 800MHz Amplifier Shelf 80-301411 Specification Parameter Specification Downlink Downlink Passband 856.0 to 861.0MHz Maximun gain 30dB Gain Adjustment 0 30dB in 2dB steps 1dB Compression Point (P1dB) +44.0dBm ALC setting 1dB below P1dB 3rd Order Intercept point +54.0dBm Uplink Uplink Passband 811.0 to 816.0MHz Maximun gain 30dB Gain Adjustment 0 to 30dB in 2dB steps 1dB Compression Point (P1dB) +36.0dBm ALC setting +27dBm 3rd Order Intercept point +46.0 dBm Noise Figure < 5.0 dB Mechanical Specification Mechanical 8U 19 Rack Mount RF Connectors N-Type Female Alarm Interfaces Local Alarms to SCADA Dry Contact with LED Indication per path Power Supply 24V DC 4.13.4. 800MHz Amplifier Shelf 80-301411 Illustrations 4.13.4.1. Front View A B C ALARM UPLINK POWER ALARM DOWNLINK A B C Green LED Power On Red LED Alarm 800MHz Downlink path Red LED Alarm 800MHz Uplink path Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 128 of 148 4.13.4.2. Rear View A B D DOWNLINK OUTPUT UPLINK OUTPUT 800 MHz DOWNLINK INPUT UPLINK INPUT DOWNLINK 0dB 0dB 0dB 0dB 2dB 4dB 8dB 16dB C E ALARM UPLINK 0dB 0dB 0dB 0dB 2dB 4dB 8dB 16dB FUSE 20A 24V DC I/P I F HH G J A B C D E F G H I J 800MHz Downlink Input from Downlink Input Shelf 80-301407 Port 5 800MHz Downlink Output to Downlink Output Shelf 80-301408 Port E 800MHz Uplink Input from Uplink Input Shelf 80-301407 Port J 800MHz Uplink Output to Uplink Output Shelf 80-301407 Port 10 Downlink Switched Attenuator 0 to 30 dB Uplink Switched Attenuator 0 to 30 dB 24V DC Input 20A Fuse for 24V DC Input Alarm Output Earth Connection 4.13.5. 800MHz Amplifier Shelf 80-301411 Major Sub Components Section Component Component Part Description Part Qty Per Assembly 4.13.5.1. 4.13.5.2. 4.13.5.3. 4.13.5.4. 4.13.5.5. 4.13.5.6. 4.13.5.7. 4.13.5.8. 02-011601 05-002602 07-002907 10-000701 11-005902 12-018601 12-020501 17-001101 17-001105 17-001201 20-001602 Bandpass FIlter Splitter/Combiner, 20W 30dB Directional Coupler Switched Attenuator 0.25Watt, 0 - 30dB Low Noise Amplifier 5W Power Amplifier 20W Power Amplifier AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly 24V Relay Dual Assembly 4.13.5.9. 4.13.5.10. 94-100004 Dual Diode Assembly 4.13.5.11. 96-200024 DC/DC Converter, 24V in, 12V 5A out 4 2 1 2 1 1 2 1 1 2 1 1 1 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 129 of 148 4.13.5.1. Bandpass Filter (02-011601) The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50 load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. 02-011601 Specification PARAMETER SPECIFICATION Frequency Range Bandwidth Downlink 856 to 861MHz Uplink 811 to 816MHz Downlink 5 MHz Uplink 5 MHz Number of Sections 8 Insertion Loss 1.2 dB VSWR better than 1.2:1 Connectors SMA Power Handling 100W max Temperature range operation -10C to +55C storage -40C to +70C Weight 3 kg (typical) 4.13.5.2. Splitter/Combiner (05-002602) The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50 load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50 load. Being passive devices, the splitters should have an extremely long operational life and require no maintenance. Should a unit be suspect, it is usually most time efficient to replace the whole module rather than attempt repair or re-tuning. 05-002602 Specification PARAMETER SPECIFICATION Frequency Range 856 861MHz Bandwidth 5MHz Ports 3 Insertion loss 3.3dB Return loss input & output 1.3:1 Impedance 50 Power rating Isolation >20dB MTFB >180,000 hours Splitting 20Watts Combining 0.5Watt Connectors SMA female Weight 200g (approximately) Size 54 x 44 x 21mm Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 130 of 148 4.13.5.3. 30dB Directional Coupler (07-002907) The purpose of these couplers is to tap off known portions (in this case 30dB) of RF signal from transmission lines nband to combine them, for example through splitter units for different purposes
(alarms/monitoring etc.), whilst maintaining an accurate 50 load to all ports/interfaces throughout the specified frequency range. They are known as directional couplers as they couple power from the RF mainline in one direction only. 07-002907 Specification PARAMETER SPECIFICATION Frequency range 800 - 1000MHz Insertion loss <0.3dB Coupling level
-30dB 0.5dB Rejection N/A Weight <200g Connectors SMA, female Temperature range operation -20C to +60C storage -40C to +70C 4.13.5.4. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50 impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER SPECIFICATION Attenuation Values 0-30dB Attenuation Steps 2, 4, 8 and 16dB Power Handling 0.25 Watt Attenuation Accuracy 1.0 dB Frequency Range DC to 1GHz Impedance 50 Connectors SMA VSWR 1.3:1 Weight 0.2kg Temperature range operation -20C to +60C storage -40C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 131 of 148 4.13.5.5. Low Noise Amplifier (11-005902) The Gallium-Arsenide low noise amplifier used in the unit is a double stage, solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into any alarm system. There is a Current Fault Alarm Function, which indicates failure of each one or both RF transistors by a various alarm output options. The amplifier is housed in an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type for DC and alarm outputs. 11-005902 Specification PARAMETER SPECIFICATION Frequency range 800 960MHz Bandwidth <170MHz Gain 19.5dB (typical) 1dB compression point +21dBm OIP3 +33dBm Input/output return loss >20dB Noise figure 1dB (typical) Power consumption 190mA @ 24V DC Supply voltage 10-24V DC Temperature range Connectors SMA female operational
-10C to +60C storage -40C to +70C Size 90 x 55 x 30.2mm Weight 0.28kg LNA D Connector Pin-out details Connector pin Signal 1 2 3 4 5 6 7 8 9
+Ve input (10-24V) GND Alarm relay O/P bad Alarm relay common Alarm relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 132 of 148 4.13.5.6. 5W Power Amplifier (12-018601) This amplifier is a Class A 5W power amplifier from 800MHz to 960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-018601 Specification PARAMETER SPECIFICATION Frequency range 800-960MHz Small signal gain 30dB Gain flatness 0.5dB I/O Return loss >20dB 1dB compression point +37dBm OIP3 +52dBm Supply voltage 12V DC Supply current 2.0Amps (typical) Temperature range operational
-10C to +60C storage -20C to +70C Weight <2kg (no heatsink) PA 7-Way Connector Pin-outs Connector Pin A1 (large pin) A2 (large pin) Signal
+12V DC GND 1 2 3 4 5 Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 133 of 148 4.13.5.7. 20W Power Amplifier (12-020501) This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-020501 Specification PARAMETER SPECIFICATION Frequency range 800-960MHz Small signal gain 31.5dB Gain flatness 0.6dB I/O Return loss >18dB 1dB compression point +43.5dBm OIP3 +54dBm Supply voltage 24V DC Supply current 4.6Amps @12V(typical) Temperature range operational
-10C to +60C storage -20C to +70C Weight <2kg (no heatsink) PA 7-Way Connector Pin-outs Connector Pin A1 (large pin) A2 (large pin) Signal
+24V DC GND 1 2 3 4 5 Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) 7-Way Connector Graphical Representation A1 1 2 A2 3 4 5 Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 134 of 148 4.13.5.8. Automatic Gain Control 17-001101 17-001105 17-001201 AGC Detector Assembly AGC Detector Assembly (Logarithmic) AGC Attenuator Assembly 800MHz Amplifier Shelf 80-301411 is fitted with two differing types of Automatic Gain Control (AGC) system, one linear, and one logarithmic. The Downlink 800MHz path is fitted with logarithmic detector
(17-001105), and attenuator (17-001201) the Uplink 800MHz path is fitted with linear detector (17-
001101) and attenuator (17-001201) The Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path before the amplification stage(s) The attenuator comprises a 50 P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated detector controller board. Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50 transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 135 of 148 4.13.5.9. 24V Relay Dual Assembly (20-001602) The General Purpose 24V Dual Relay Board (20-001602) allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays RL1 and RL2, with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. Its common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 20-001602 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm Threshold Vcc - 1.20 volt +15%
Alarm output relay contacts:
Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0A/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Temperature range Connector details Screw terminals
-10C to +60C storage -20C to +70C operational 4.13.5.10. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries. 4.13.5.11. DC/DC Converter, 24V in, 12V 5A out (96-200024) This unit it is an O.E.M high power device with a 5 amp @ 12V (60Watts) output capability used to derive a 12V fixed voltage power supply rail from a 24V supply. In the event of failure this unit should not be repaired, only replaced. 96-200024 Specification PARAMETER Input Voltage range 18-28V DC SPECIFICATION Output voltage 12V0.5V Max. current load 5.0 Amps Temperature range operation -10C to +60C storage -20C to +70C Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 136 of 148 4.14 PSU 96-300064 96-300064 is an O.E.M. PSU there are two housed in a 2U rack mount assembly at the bottom of Rack 1. We does not recommend any invasive procedures for these O.E.M. power supplies. In case of failure, they are not to be repaired, only replaced. 96-300064 Specification AC Input Supply Voltages 110 or 220V nominal 90 to 132 or 180 to 264V (absolute limits) Frequency 47 to 63Hz Voltage DC Output Supply:
24V DC (nominal) 22 to 26V (absolute limits) Maximum current 40A Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 137 of 148 5. INSTALLATION 5.1 Installation Record When this equipment is initially commissioned, please use the equipment set-up record sheet in Appendix B. This will help both the installation personnel and Axell Wireless Ltd. should these figures be needed for future reference or diagnosis. 5.2 General Remarks The size and weight of the equipment racks mean that they represent a significant topple hazard unless they are bolted to the floor though the mounting holes in the base of the unit. In the interests of safety this should be done before any electrical, RF, or optical connections are made. The equipment must be located on a flat, level surface that is made from a material suitable for bearing the weight of the rack assembly. If the installer is in any doubt about the suitability of a site it is recommended that he consult with an appropriately qualified Structural Engineer. It is important in determining the location of the rack within the room that space is allowed for access to the front and rear of the equipment. To enable maintenance to be carried out, the doors must be able to fully open. The location must be served with a duct to allow the entry of cables into the rack. 5.3 Electrical Connections The mains power supply is connected to the terminal strip located on the bulkhead at the rear of the equipment at floor level. It is recommended that the connection is made by a qualified electrician, who must satisfy himself that the supply will be the correct voltage and of sufficient capacity. All electrical and RF connection should be completed and checked prior to power being applied for the first time. Ensure that connections are kept clean and are fully tightened. 5.4 RF Connections All RF connections are made to the cable termination, located on the bulkhead at the rear of the equipment at floor level. Care must be taken to ensure that the correct connections are made with particular attention made to the base station TX/RX ports. In the event that the base transmitter is connected to the RX output of the rack, damage to the equipment will be done if the base station transmitter is then keyed. Ensure that connections are kept clean and are fully tightened. 5.5 Optical Connections The optical input and output ports will be located on the appropriate E/O shelf as shown in the rack layout drawing and the system layout drawing. The ports are supplied with a green plastic cover, which must be removed prior to the connection of the fibre cable. Ensure that transmitter and receiver fibre cable are identified to prevent misconnection. At the master site, the fibre transmitters are in the downlink path with the receivers in the uplink. At the remote sites the fibre transmitters are in the uplink with the receivers in the downlink. Ensure that connections are kept clean and are fully tightened. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 138 of 148 5.6 Commissioning Once all connections are made the equipment is ready for commissioning. To commission the system the test equipment detailed in Section 6.2 will be required. Using the system diagrams and the end-to-end test specification, the equipment should be tested to ensure correct operation. Typical RF levels that are not listed in the end-to-end specification, such as input levels to the fibre transmitters are detailed in the maintenance section of this manual. On initial power up the system alarm indicators on the front panels of the equipment should be checked. A red LED illuminated indicates a fault in that particular tray that must be investigated before proceeding with the commissioning. A green LED on each shelf illuminates, to indicate that the power supply is connected to the shelf In the event that any part of the system does not function correctly as expected, check all connections to ensure that they are to the correct port, that the interconnecting cables are not faulty and that they are tightened. The majority of commissioning difficulties arise from problems with the interconnecting cables and connectors. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 139 of 148 6. MAINTENANCE 6.1 Fault Finding 6.1.1 Quick Fault Checklist All tunnel equipment is individually tested to specification prior to despatch. Failure of this type of equipment is not common. Experience has shown that a large number of fault conditions relating to tunnel installations result from simple causes often occurring as result of transportation, unpacking and installation. Below are listed some common problems which have resulted in poor performance or an indicated non-functioning of the equipment. Input signals not present due to faults in the antenna and feeder system. Internal connectors becoming loose due to transport vibration.
Mains power not connected or not switched on.
External connectors not fitted or incorrectly fitted.
Wiring becoming detached as a result of heavy handling.
Base transmissions not present due to fault at the base station.
Modems fitted with incorrect software configuration.
Changes to channel frequencies and inhibiting channels.
Hand held radio equipment not set to repeater channels.
Hand held radio equipment not set to correct base station. 6.1.2 Fault Isolation In the event that the performance of the system is suspect, a methodical and logical approach to the problem will reveal the cause of the difficulty. The System consists of modules fitted in enclosed shelves within a rack mounted, environmentally protected enclosure. Transmissions from the main base stations are passed though the system to the mobile radio equipment; this could be a handheld radio or a transceiver in a vehicle. This path is referred to as the downlink. The return signal path from the mobile radio equipment to the base station is referred to as the uplink. The first operation is to check the alarms of each of the active units and determine that the power supplies to the equipment are connected and active. This can be achieved remotely (via the volt free dry contact outputs to SCADA), or locally with the front panel LEDs. The green LED on the front panel should be illuminated, while any red alarm indicators should be off. If an Alarm is on, then that individual shelf must be isolated and individually tested against the original test specification. The individual amplifier units within the shelf have a green LED showing through a hole in their piggy-
back alarm board, which is illuminated if the unit is working correctly. If an amplifier is suspect, check the DC power supply to the unit. If no other fault is apparent use a spectrum analyser to measure the incoming signal level at the input and then after reconnecting the amplifier input, measure the output level. Consult with the system diagram to determine the expected gain and compare result. In the event that there are no alarms on and all units appear to be functioning it will be necessary to test the system in a systematic manner to confirm correct operation. 6.1.3 Downlink Confirm that there is a signal at the expected frequency and strength from the base station. If this is not present then the fault may lay outside the system. To confirm this, inject a downlink frequency signal from a known source at the Downlink input and check for the expected RF output. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 140 of 148 If a signal is not received at the output it will be necessary to follow the downlink path through the system to find a point at which the signal is lost. The expected downlink output for the given input can be found in the end-to-end test specification. 6.1.4 Uplink Testing the uplink involves a similar procedure to the downlink except that the frequencies used are those transmitted by the mobile equipment. 6.1.5 Checking service Following the repair of any part of the system it is recommended that a full end-to-end test is carried out in accordance with the test specification and that the coverage is checked by survey. It is important to bear in mind that the system includes a radiating cable network and base stations that may be faulty or may have been damaged. 6.1.6 Fault repair Once a faulty component has been identified, a decision must be made on the appropriate course to carry out a repair. A competent engineer can quickly remedy typical faults such as faulty connections or cables. The exceptions to this are cable assemblies connecting bandpass filter assemblies that are manufactured to critical lengths to maintain a 50-ohm system. Care should be taken when replacing cables or connectors to ensure that items are of the correct specification. The repair of component modules such as amplifiers and bandpass filters will not usually be possible in the field, as they frequently require specialist knowledge and test equipment to ensure correct operation. It is recommended that items of this type are replaced with a spare unit and the faulty unit returned to Axell Wireless Ltd for repair. 6.1.7 Service Support Advice and assistance with maintaining and servicing this system are available by contacting Axell Wireless Ltd NOTE Individual modules are not intended to be repaired on site and attempts at repair will invalidate active warranties. Company policy is that individual modules should be repaired by replacement. Axell Wireless Ltd. maintains a level of stock of most modules which can usually be despatched at short notice to support this policy. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 141 of 148 6.2 Tools & Test Equipment The minimum tools and test equipment needed to successfully service this Axell product are as follows-
Spectrum analyser Signal Generator Attenuator Test Antenna Digital multi-meter Test cable x 2 Test cable x 2 Hand tools 100kHz to 2GHz (Dynamic range = 90dB). 30MHz to 2GHz (-120dBm to 0dBm o/p level). 20dB, 10W, DC-2GHz, (N male N female). Yagi or dipole for operating frequency. Universal Volt-Ohm-Amp meter. N male N male, 2M long RG214. SMA male N male, 1m long RG223. Philips #1&2 tip screwdriver. 3mm flat bladed screwdriver. SMA spanner and torque setter. 6.3 Care of Modules 6.3.1 General Comments Many of the active modules contain semiconductor devices utilising MOS technology, which can be damaged by electrostatic discharge. Correct handling of such modules is mandatory to ensure their long-term reliability. To prevent damage to a module, it must be withdrawn/inserted with care. The module may have connectors on its underside, which might not be visible to the service operative. 6.3.2 Module Removal (LNAs, general procedure) The following general instructions should be followed to remove a module 1 2 3 4 1 2 3 4 1) 2) Remove power to the unit Remove all visible connectors (RF, DC & alarm) Release module retaining screws. Slowly but firmly, pull the module straight out of its position. Take care not to twist/turn the module during withdrawal. (When the module is loose, care may be needed, as there may be concealed connections underneath). 6.3.3 Module Replacement (general) Carefully align the module into its location then slowly push the module directly straight into its position, taking care not to twist/turn it during insertion. Reconnect all connectors, RF, alarm, power etc., (concealed connectors may have to be connected first). Replace retaining screws (if any). Double-check all connections before applying power. 6.3.4 Power Amplifiers Remove power to the unit. (Switch off at mains/battery, or remove DC in connector) Remove alarm wires from alarm screw terminal block or disconnect multi-way alarm connector. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 142 of 148 3) Carefully disconnect the RF input and output coaxial connectors (usually SMA) If alarm board removal is not required, go to step 5. 4) 5) There is (usually) a plate attached to the alarm board which fixes it to the amplifier, remove its retaining screws and the alarm board can be withdrawn from the amplifier in its entirety. On certain types of amplifier the alarm board is not mounted on a dedicated mounting plate; in this case it will have to firstly be removed by unscrewing it from the mounting pillars, in most cases, the pillars will not have not have to be removed before lifting the amplifier. If the amplifier to be removed has a heatsink attached, there may be several different ways it can have been assembled. The most commonly used method, is screws through the front of the heatsink to threaded screw holes (or nuts and bolts), into the amplifier within the main case. If the heatsink is mounted on the rear of the main case (e.g., against a wall in the case of wall mounted enclosures), then the fixing method for the heatsink will be from within the case, (otherwise the enclosure would have to be removed from the wall in order to remove the heatsink). When the heatsink has been removed, the amplifier may be unscrewed from the main casing by its four corner fixings and gently withdrawn. Fitting a new power amplifier module will be the exact reverse of the above. Note Do not forget to apply fresh heatsink compound to the heatsink/main case joint and also between the amplifier and the main case. 6.3.5 Low Power Amplifier Replacement 1 2 3 4 5 6 7 Disconnect the mains power supply and disconnect the 24V dc supply connector for the LPA. Disconnect the RF input and output cables from the LPA. Disconnect the alarm connector. Remove the alarm monitoring wires from (D type connector) pins 9 and 10. Remove the LPA module by removing the four retaining screws, replace with a new LPA module and secure it with the screws. Connect the RF cables to the LPA input and output connectors. Reconnect the wires to the alarm board connector pins 9 and 10. Reconnect the DC supply connector and turn the mains switch on. Note Tighten SMA connectors using only a dedicated SMA torque spanner. If SMA connectors are over-tightened, irreparable damage will occur. . Do not use adjustable pliers to loosen/tighten SMA connectors. Also take care not to drop or knock the module as this can damage (or misalign in the case of tuned passive modules) sensitive internal components. Always store the modules in an environmentally friendly location 6.3.6 Module Transportation To maintain the operation, performance and reliability of any module it must be stored and transported correctly. Any module not installed in a whole system must be kept in an anti-static bag or container. These bags or containers are normally identified by being pink or black, and are often marked with an ESD label. Any module sent back to Axell for investigation/repair must be so protected. Please contact Axells quality department before returning a module. Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 143 of 148 Appendix A A.1. Glossary of Terms used in this document Cell Enhancer or Repeater Band Selective Repeater Channel Selective Repeater A Radio Frequency (RF) amplifier which can simultaneously amplify and re-broadcast Mobile Station (MS) and Base Transceiver Station (BTS) signals. A Cell Enhancer designed for operation on a range of channels within a specified frequency band. A Cell Enhancer, designed for operation on specified channel(s) within a specified frequency band. Channel frequencies may be factory set or on-site programmable. AC AGC BBU BTS CEMS C/NR DC Alternating Current Automatic Gain Control Battery Backup Unit Base Transceiver Station Coverage Enhanced Management System Carrier-to-Noise Ratio Direct Current Downlink (D/L) RF signals TX from the BTS to the Master Site FO GND ID LED LNA LPA MOU M.S. MTBF N/A N/C OFR OIP3 P1dB PA RF RSA RX S/N TX Fibre Optic Ground Identification Number Light Emitting Diode Low Noise Amplifier Low Power Amplifier Master Optical Unit Mobile Station Mean Time Between Failures Not Applicable No Connection On Frequency Repeater Output Third Order Intercept Point 1dB Compression Point Power Amplifier Radio Frequency Receiver/Splitter Amplifier Receiver Serial Number Transmitter Uplink (U/L) RF signals transmitted from the MS to the BTS VSWR WDM Voltage Standing Wave Ratio Wave division multiplex Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 144 of 148 A.2. Key to Drawing Symbols used in this document
A A
S L O B M Y S D R A D N A T S
L F A
1 0 0 0 0 0
0 9
0 0
5 0 0 1
L P
S T N
Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 145 of 148 A.3. EC Declaration of Conformity In accordance with BS EN ISO/IEC 17050-1&-2:2004 Aerial Facilities Limited Aerial House Asheridge Road Chesham Buckinghamshire HP5 2QD United Kingdom DECLARES, UNDER OUR SOLE RESPONSIBILITY THAT THE FOLLOWING PRODUCT:
PRODUCT DESCRIPTION AND PART NO[S]
In-Line Bi-Directional Amplifier (Wall Mount) 80-301401 In-Line Bi-Directional Amplifier (Rack Mount) 80-301406 IN ACCORDANCE WITH THE FOLLOWING DIRECTIVES:
1999/5/EC The Radio & Telecommunications Terminal Equipment Directive Annex V and its amending directives HAS BEEN DESIGNED AND MANUFACTURED TO THE FOLLOWING STANDARD[S] OR OTHER NORMATIVE DOCUMENT[S]:
BS EN 60950 Information technology equipment. Safety. General requirements ETS EN 301 489-1 EMC standard for radio equipment and services. Part 1. Common technical requirements I hereby declare that the equipment named above has been designed to comply with the relevant sections of the above referenced specifications. The unit complies with all essential requirements of the Directives. SIGNED B. S. BARTON OPERATIONS DIRECTOR DATE: 21/01/2008 Registered Office: Aerial House, Asheridge Road, Chesham, Buckinghamshire, HP5 2QD England Registered No. 4042808 (England) www.axellwireless.com Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 146 of 148 A.4. Amendment List Record Sheet Issue No. Date Incorporated by Page Nos. Amended Reason for new issue A 1 21/01/2008 AJS 13/06/2008 AJS Draft Issue Document Ref. 80-301401HBKM Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 147 of 148 APPENDIX B B.1. INITIAL EQUIPMENT SET-UP CALCULATIONS Site Name Client Name GENERAL INFORMATION Date AWL Equip. Model No. ANTENNA SYSTEMS A - Service Antenna Model Gain B Donor Antenna C Service Feeder D Donor Feeder Type Loss Azimuth Length Comments Comments INITIAL PARAMETERS E CE Output Power F Antenna Isolation G Input signal level from donor BTS Operating Voltage DOWNLINK CALCULATIONS Parameter Input signal level (G) CE max. o/p power (E) Gain setting Isolation required Service antenna gain (A) Comments E - G
(Gain + 10dB) Service antenna feeder loss (C) Effective radiated power (ERP) Attenuator setting E+A-C CE gain-gain setting dBm dB dBm V Value dBm dBm dB dB dB dB dBm dB If the input signal level in the uplink path is known and steady, use the following calculation table to determine the gain setting. If the CE features Automatic Gain Control the attenuator should be set to zero and if not, then the attenuation setting for both uplink and downlink should be similar. UPLINK CALCULATIONS Parameter Input signal level CE max. o/p power (E) Gain setting Required isolation Donor antenna gain (B) Donor antenna feeder loss (D) Effective radiated power (ERP) Attenuator setting Comments E+B-D
(CE gain-gain setting) Value dBm dBm dB dB dB dB dBm dB Axell Wireless Limited L.A. M.T.A. Remote Sites Technical Literature Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 148 of 148
| frequency | equipment class | purpose | ||
|---|---|---|---|---|
| 1 | 2008-12-15 | 856 ~ 861 | TNB - Licensed Non-Broadcast Station Transmitter | Original Equipment |
| app s | Applicant Information | |||||
|---|---|---|---|---|---|---|
| 1 | Effective |
2008-12-15
|
||||
| 1 | Applicant's complete, legal business name |
Axell Wireless
|
||||
| 1 | FCC Registration Number (FRN) |
0007840820
|
||||
| 1 | Physical Address |
The Cobham Centre
|
||||
| 1 |
Marlow, Bucks, N/A SL7 1TF
|
|||||
| 1 |
United Kingdom
|
|||||
| app s | TCB Information | |||||
| 1 | TCB Application Email Address |
p******@trac-trl.com
|
||||
| 1 | TCB Scope |
B2: General Mobile Radio And Broadcast Services equipment in the following 47 CFR Parts 22 (non-cellular) 73, 74, 90, 95, 97, & 101 (all below 3 GHz)
|
||||
| app s | FCC ID | |||||
| 1 | Grantee Code |
NEO
|
||||
| 1 | Equipment Product Code |
80-3014RSERIES
|
||||
| app s | Person at the applicant's address to receive grant or for contact | |||||
| 1 | Name |
B******** B****
|
||||
| 1 | Title |
Operations Support Director
|
||||
| 1 | Telephone Number |
+44(0********
|
||||
| 1 | Fax Number |
+44(0********
|
||||
| 1 |
b******@cobhamwireless.com
|
|||||
| app s | Technical Contact | |||||
| n/a | ||||||
| app s | Non Technical Contact | |||||
| n/a | ||||||
| app s | Confidentiality (long or short term) | |||||
| 1 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
| 1 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
| if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
| app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
| 1 | Is this application for software defined/cognitive radio authorization? | No | ||||
| 1 | Equipment Class | TNB - Licensed Non-Broadcast Station Transmitter | ||||
| 1 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | 80-301401 Cell Enhancer | ||||
| 1 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
| 1 | Modular Equipment Type | Does not apply | ||||
| 1 | Purpose / Application is for | Original Equipment | ||||
| 1 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | No | ||||
| 1 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
| 1 | Grant Comments | Booster, declared output power is per channel | ||||
| 1 | Is there an equipment authorization waiver associated with this application? | No | ||||
| 1 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
| app s | Test Firm Name and Contact Information | |||||
| 1 | Firm Name |
TRL Compliance Ltd
|
||||
| 1 | Name |
J****** C****
|
||||
| 1 | Telephone Number |
44-16********
|
||||
| 1 | Fax Number |
44-16********
|
||||
| 1 |
j******@trlcompliance.com
|
|||||
| Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
| 1 | 1 | 9 | 154 | 161.5 | 0.16 | Amp | F3E | ||||||||||||||||||||||||||||||||||
| 1 | 2 | 9 | 155.5 | 161 | 0.02 | Amp | F3E | ||||||||||||||||||||||||||||||||||
| 1 | 3 | 9 | 460.4 | 460.5 | 0.4 | Amp | F3E | ||||||||||||||||||||||||||||||||||
| 1 | 4 | 9 | 465.4 | 465.5 | 0.023 | Amp | F3E | ||||||||||||||||||||||||||||||||||
| 1 | 5 | 9 | 482.5 | 483.8 | 0.25 | Amp | F3E | ||||||||||||||||||||||||||||||||||
| 1 | 6 | 9 | 485.7 | 486.8 | 0.0125 | Amp | F3E | ||||||||||||||||||||||||||||||||||
| 1 | 7 | 9 | 507 | 507.3 | 0.4 | Amp | F3E | ||||||||||||||||||||||||||||||||||
| 1 | 8 | 9 | 510 | 510.3 | 0.023 | Amp | F3E | ||||||||||||||||||||||||||||||||||
| 1 | 9 | 9 | 856 | 861 | 0.2 | Amp | F3E | ||||||||||||||||||||||||||||||||||
| 1 | 1 | 9 | 811 | 816 | 0.005 | Amp | F3E | ||||||||||||||||||||||||||||||||||
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC