User Manual FS31R-15C VHF RRU 162 175 MHz Fiber-Fed Remote Repeater Unit (RRU) 4 Watts Linear Output Power Version 3 5/1/2012 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 1. Limitation of Liability Copyright 2011 Fiber-Span. All rights reserved. No part of this publication, or any software included with it may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, including photocopying, electronic, mechanical, recording or otherwise, without the prior written permission of the copyright holder. Fiber-Span provides this document as is, without any warranty of any kind either expressed or implied including, but not limited to, the implied warranties of merchantability and fitness of a particular purpose. Fiber-Span may make changes or improvements in the equipment, software, or specifications described in this document at any time and without notice. These changes will be incorporated in new releases of this document. This document may contain technical inaccuracies or typographical errors. Fiber-Span waives responsibility for any labor, materials, or costs incurred by any person or party as a result of using this document. Fiber-Span and any of its affiliates shall not be liable for any damages
(including, but not limited to, consequential, indirect or incidental, special damages or loss of profits or date) even if they were foreseeable and Fiber-Span has been informed of their potential occurrence, arising out of or in connection with this document or its use. Fiber-Span 3434 Route 22 W. Branchburg, New Jersey 08876 Tel: (908) 253-9080 Fax: (908) 253-9086 www.fiber-span.com 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com
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3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 2. Introduction The FS31R-15C Very High Frequency (VHF) Fiber Optic Remote Repeater Unit (FO-RRU) is a linear 4 Watts (36 dBm) RF power amplifier covering the frequency range from 162 to 175 MHz. The unit offers fiber input / output interface for long haul operation through a single mode fiber medium. Device improves in-building wireless coverage enhancement to eliminate dropped calls and poor reception by amplifying and re-broadcasting a cell tower signal throughout a building. While the fiber section is bandwidth unlimited, the internal RF components are optimized for best operation in the VHF bandwidth. RF has a separate input and output port to accommodate simplex application; however this product series can contain a duplexer for a bi-directional configuration ensuring uplink and downlink into a distributive antenna system (DAS). 3. Revision History 1 2 3 1 Version Description Draft release Date 5/1/2012 Author C.M. Update FCC Statement 24-May-12 Changed MPI distances to 1.5 and 2.5 meters 31-May-2012 J.S. J.S. 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 4. Table of Contents 1. Limitation of Liability............................................................................................................. 1 2. Introduction ............................................................................................................................. 1 3. Revision History ..................................................................................................................... 1 4. Table of Contents .................................................................................................................... 2 5. Warnings ................................................................................................................................. 4 6. Main Product Name ................................................................................................................ 5 7. Sub Product Name .................................................................................................................. 5 8. System Application ................................................................................................................. 6 9. Startup Checklist ..................................................................................................................... 7 10. Installation............................................................................................................................ 7 10.1. Connecting RF ............................................................................................................ 7 10.2. Mounting installation .................................................................................................. 8 11. Block Diagram ..................................................................................................................... 8 12. Specifications ....................................................................................................................... 9 12.1. Electrical ..................................................................................................................... 9 12.2. Mechanical ................................................................................................................ 11 Wall Mount Version ............................................................................................................. 11 Rack Mount Version ............................................................................................................. 11 12.3. Tools ......................................................................................................................... 11 12.4. On Site Requirements ............................................................................................... 12 13. General Precautions ........................................................................................................... 12 14. Maintenance ....................................................................................................................... 12 2 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 14.1. Preventative Measure for Optimal Operation ........................................................... 13 15. Factory Settings ................................................................................................................. 15 16. Outline Drawing................................................................................................................. 16 17. Front / Rear Panel Ports and Interfaces............................................................................. 18 18. FCC Statement ................................................................................................................... 20 19. Warranty ............................................................................................................................ 21 19.1. General Warranty ...................................................................................................... 21 19.2. Limitations of Warranty ............................................................................................ 21 19.3. Limitations of Damages ............................................................................................ 21 19.4. Return Material Authorization (RMA) ..................................................................... 21 20. Company Information ........................................................................................................ 22 Appendix A FS31R-15C RRU Media Converter ................................................ A-1 3 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 5. Warnings Invisible laser radiation exits from areas labeled Aperture By connecting all the fiber connector ends of the optical link before applying power to both Figure 1: Laser Warning Label fiber transceiver unit and remote fiber node, it will prevent exposure to invisible laser radiation. Follow and comply with all site safety policies, local codes and rules ordinances. Figure 2: Radio Frequency Notice 4
** Pay special attention to statements with an exclamation point symbol next to it. **
Terminate every RF port with a 50 Ohm load. 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 38RF SignsSign Examples While in operation do not touch heat sink as surface is very HOT. Device maximum composite optical input level is 7 dBm. Only a qualified technician shall be allowed to operate the unit, after reading and understanding all the guidelines in this manual. 6. Main Product Name There are two (2) main product versions:
Model Prefix Model Midfix FS31R-15C WM FS31R-15C RM 7. Sub Product Name Major Internal Parts:
Version Wall Mount Rack Mount Part Number Description Quantity 180-0113 180-0117 290-0310 290-0311 305-0359 305-0361 390-0063 495-0098 530-0169 650-0043 Gigabit Media Converter SFP Module DL Variable Digital Amplifier UL Variable Digital Amplifier Micro-Processor Computer Controller Board Dual WDM VHF High Power Amplifier VHF Duplexer 12 Volt Fan (2 as inlet, 2 as outlet) 1 1 1 1 1 1 1 1 1 4 5 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com Part Number Description Quantity 290-0061 Fiber Optic Transmitter / Receiver 1 The main parts are the same for the wall mount and rack mount versions excluding the RF cable interfaces and wiring harnesses that vary in length. Some or all the parts are subject to change without notice for the purpose of improving the product functionality. 8. System Application The RRU is mounted in a strategic remote location where signal communication is poor or none available determined by the system engineer assessment and is part of a large system configuration with a headend. Integrated at the headend are elements that transmit, receive, condition and transport signals simultaneously via two (2) dedicated single mode fiber medium into an RRU and signal distributed and repeated for every remote unit. One (1) fiber medium is for the downlink path and the other fiber medium is for the uplink path optical interface ports RRU which is design for long haul up to 10 dBo of optical loss translating into a useable uninterrupted fiber-distance of 28.5 Kilometers. Downlink signals at the headend are condition by the base station unit (BSU) which accepts an input power from the RF source between 0 dBm to 30 dBm and outputs signal levels of 0 dBm with nominal at -10 dBm into the fiber transmitter unit. A network management system (NMS) controls and configures the main elements the headend location as well as the RRU hardware via dedicated Ethernet LAN internet connections within the same fiber backbone. Lost of communication to and from the system is reported and logged with the NMS. 6 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 9. Startup Checklist The rack mount version unit has a VAC inlet that comes with a six (6) feet 3 prong VAC cord and the wall mount version unit has an embedded six (6) feet 3 prong VAC cord that plugs to a common house hold AC outlet. To protect the device RF output port, it includes a 50 Ohm load terminator that should not be removed until the RF output cable is ready to connect to it. 10. Installation 10.1. Connecting RF Follow these steps for connecting and disconnecting RF cables to the unit. Sequence to connect:
1. Connect output load to the unit. 2. Apply power to the device. 3. Verify RF signal source is turned off. 4. Connect RF Input to the unit. (when fiber-fed, connect optical input to the unit). 5. Turn on the RF signal source input. Sequence to Disconnect:
1. Turn off the source RF input. 2. Disconnect the RF Input connection of the unit. (when fiber-fed, disconnect optical input to the unit). 3. Un-apply power to the unit. 4. Disconnect the output load of the unit. 7 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 10.2. Mounting installation In a well structured support wall that it is reinforced with a 1 inch thick plywood of additional backing, mount the enclosure using four (4) socket head cap screws size 3/8-16, 1-1/2 inch length to bear the enclosure weight (80 lbs). 11. Block Diagram The FS31R-15 rack mount and wall mount unit internal parts are the same without internal duplexer is shown in Figure 3: Remote Repeater Unit (RRU) Block Diagram. Unit choices are with internal or external duplexer. Duplexer RF In/Out 1 GHz Clock 8 Figure 3: Remote Repeater Unit (RRU) Block Diagram 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 12. Specifications 12.1. Electrical Dowlink Path RF Parameters Figure 4: UUT Downlink Test Setup Block Diagram Acronym Min Typical Max (1) Units Composite RF Input (2) RFin
-15
-10 dBm Frequency Flatness RF Gain (3) Output Intercept Point Output Noise 9 Freq Flts 169.5625
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--
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RFG 48 OIP3 O.N. 56.5
-114 50 61.0
-90 173.825 MHz
+/- 2.0 56
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-75 dB dB dBm dBm/1Hz 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com Composite RF Out and Automatic Level Control ALC 36.0 Forward Power Alarm FPM 39 37 40 Test Frequencies F1/F2 172.000 172.500 Calculated Values Spur Free Dynamic Range SFDR 100 dBm dBm MHz dBm/2/3 Hz Uplink Path RF Parameters RF Input (4), (5) Frequency Flatness RF Gain (3) RF Out Output Noise Acronym Min Typical Max (1) Units
-80
-55
-19 dBm RFin Freq 162.175
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-7 0
-115 166.4375 MHz
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+/- 2.00 dB 56 3 dB dBm dBm/2/3Hz Test Frequencies F1, F2 Calculated Values Spur Free Dynamic Range SFDR Noise Figure NF 164.000 164.500 MHz 100 2 8 dBm/2/3 Hz
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(1) The electrical test conditions specified in this section is with a reference calibrated in factory unit using a 1 meter single mode fiber patch cord as the fiber medium equivalent to 0 dBo optical loss.
(2) RF Input level is using a reference transmitter.
(3) RF Gain measurement criteria are with attenuators at minimum attenuation. 10 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com
(4) Uplink RF input level at -20 dBm triggers the squelch and RF will shut off.
(5) Factory test RF input level into reference fiber transmitter is -19 to -23 dBm. RF Gain Adjustment RF Gain has a wide adjustment range thus it is set to the minimum value of 37dB at 0 dBo loss and increases proportionally as the fiber medium optical loss goes up. Normalization of the Link RF Gain due to increase in optical loss:
Increase up the RF Gain by 2 (dB) for every 1 (dBo) of fiber medium optical loss. Tip Before verifying the RF Gain maximum level is attainable, decrease the RF input level by 20 dB, hence to -57 dBm, so that no compression of signal occurs. 12.2. Mechanical Wall Mount Version Allow at least 20 inches of space from the front of the unit (not including enclosure depth) for opening the door. Rack Mount Version Allow at least 20 inches of space from the front of the unit for installation and removal of the rack mount. 12.3. Tools Tools Medium/ Large hand held flat head screwdriver Purpose For opening front door of wall mount 11 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 12.4. On Site Requirements For each RRU a three (3) wire (Hot, Neutral, and Ground) 120 VAC wall outlet including a separate earth ground bus bar that connects to the unit chassis. Two 9/125 um single-mode fiber strands with SC/APC connectors, one for the downlink path and the other for the uplink path. A unit as a simplex configuration requires two (2) high quality RF cable with N-Male connector that attaches from the DAS to the RF Input and Output port. A unit as a duplex configuration requires only one (1) high quality RF cable with N-Male connector that attaches from the DAS to the bi-directional RF In/Out port. 13. General Precautions Allow at least 6 inches of space into the air inlet and outlet of the unit, for proper air flow through the fan(s). Do not change any of the parameters unless instructed to do so by an authorized supervisor and you are a qualified technician to operate device. Do not attempt to move product without the proper tools and man power, because product is heavy. Terminate all the unit RF ports with a 50 Ohm load prior to powering up. 14. Maintenance Periodically check and clean the unit fan(s) inlet and outlet by removing lint, dust and dirt with a lightly damped cloth. Air-in-a-Can is also a good product to have as part of a maintenance kit that includes an extended nozzle for hard to reach places. 12 Do not hose the unit with water as it is not waterproof. 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com Unit can be cleaned without being turned off, but do not disrupt or touch any moving mechanism in a way that can stall the motor. Replace a fan immediately upon fan alarm indicator turning on. Shut off the unit to preserve the lifespan when a fan or fans cannot be replaced immediately. 14.1. Preventative Measure for Optimal Operation Optical Maintenance Once optical connectors are secured the ports no maintenance is required. However when necessary to unplug it, immediately cap the tip with cover, This prevents scratching exposed glass tip which deteriorates performance and possibly becoming unusable. SC/APC Connector Figure 5: SC/APC Connector with cap Cover Guidelines for using SC/APC Connectors and Adapters Warning! Improper maintenance and installation of optical connectors and adapters can permanently damage parts, and seriously degrade performance of fiber optic devices. All installation personnel using Fiber-Span equipment equipped with optics should review this document. Fiber-Span is not responsible for damage caused by improper use of optical equipment. Maintenance 13 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 1. Clean SC-APC connectors and Adapters with isopropyl alcohol (99%), dust free fiber optic cleaning tissues and 2.5mm mini-swabs. 2. While performing these steps protect connector tips from scratching. 3. Clean the inside of the fiber optic adapters and bulkheads using a swab lightly moistened in isopropyl alcohol. 4. Gently insert swab into the adapter orifice until the back-stop is reached, rotate swab clockwise several times. Discard swab after each use. 5. Lightly moisten a dust free fiber optic cleaning tissue with isopropyl alcohol. 6. Hold pre-moisten tissue touching connector tip (end face) and gently swipe connector in a figure 8 motion several times. 7. Always keep exposed connector tip and adapters covered with protective cap. Figure 6: SC/APC Adapter Figure 7: SC/APC Connector Installation 8. Align connector key (alignment post) with notch on the adapter or bulkhead. 9. After assuring keys align, push connector forward into adapter or bulkhead until connector clicks. Click indicates connector has been seated properly. 14 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 10. Always install SC/APC connectors into adapter or bulkhead by hand. Assure key (alignment pin) on connector aligns with notch in adapter or bulkhead After key is aligned, push connector into adapter or bulkhead Always insert by hand Figure 8: SC/APC Connector attaching to Adapter Initial signal testing as a baseline and periodic signal level testing thereafter, will provide a historical log for keeping track of signal quality so that if required fine tuning of the system can be achieved for optimum performance. 15. Factory Settings Tuning and testing performed at factory are:
Two tone test (TTT) that consist of: S-Parameters RF Input (dBm) RF Output (dBm) RF Gain (dB) S21 S11 S22 Output Third Order Intercept (dBm) Output Noise (dBm/ 1Hz) Calculated Values Spur Free Dynamic Range (SFDR) Noise Figure (NF) 15 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com Monitors and Controls Fiber Transmitter Fiber Receiver RF FOTX FORX Power Amplifier Optical power Optical minimum DL Attenuation Range TX Set-point input threshold UL Attenuation Range Laser Bias Temperature Alarm 16. Outline Drawing Enclosure Type Rack Mount Wall Mount Automatic Level Control Forward Power Monitor Sensitivity Size inches (mm) 19 x 18 x 6.95 (465.1 x 457.2 x 6.95) 20 x 20 x 9 (508 x 508 x 238.5) Figure 9: Wall Mount 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 16 Figure 10: Rack Mount 17 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 17. Front / Rear Panel Ports and Interfaces Rack Mount 1 2 3 4 5 6 Rear View 7 8 9 Front View 1. VAC In Inlet 2. Ground Lug 3. Circular Alarm Connector 4. Optical Input Port 5. Optical Output Port 6. RF In / Out Port 7. Power LED Indicator 18 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 8. Alarm LED Indicator 9. USB Port Wall Mount 1 2 3 4 6 5 Bottom Panel Ports and Interface Bottom View 19 1. RF In / Out Port 2. Circular Alarm Connector 3. Optical Input Port 4. Optical Output Port 5. VAC Cord 6. Ground Lug 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 18. FCC Statement Manufacturers Notes Changes or modifications not expressly approved by the manufacturer could Void the users authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their own expense. This device has been designated to operate with the antennas having a maximum gain of
[9] dBi for a 1.5 meter distance and antennas having a gain greater than [15] dBi at 2.5 meters distance are strictly prohibited for use with this device. The required antenna impedance is [50] Ohms. To improve and correct equipment performance the following can be performed. 1. Re-orient or relocate the receiving antenna. 2. Increase the separation between the equipment and receiver. 3. Connect the equipment into an outlet on a different circuit from that to which the receiver is connected. 4. Consult the dealer or an experienced radio/RF technician for help. 20 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 19. Warranty 19.1. General Warranty The RFN carries a standard warranty period of one (1) year unless otherwise indicated on the shipping packages as noted in the purchase order agreement. 19.2. Limitations of Warranty The warranty is limited to the repair or replacement of the defective product. Fiber-Span will decide which remedy to provide for defective components as its own discretion. Fiber-Span shall have a reasonable time after determining that a defective product exists to repair or replace the problem unit. The warranty applies to repaired or replaced products for the balance of the applicable period of the original warranty or ninety (90) days from date of shipment of a repaired or replaced component, whichever is longer. The Fiber-Span standard warranty does not cover products which have been received improperly packaged, altered, or physically damaged. For example, broken warranty seal, labels exhibiting tampering, physically abused enclosure, broken pins on connectors, any modifications made without Fiber-Span authorization, will void all warranty. 19.3. Limitations of Damages The liability for any defective product shall in no event exceed the purchase price for the defective product. Fiber-Span has no liability for general, consequential, incidental or special damages. 19.4. Return Material Authorization (RMA) No product may be returned directly to Fiber-Span without first getting an approval from Fiber-
Span. If it is determined that the product may be defective, you will be given an RMA number and instructions in how to return the product. An unauthorized return, i.e., one for which an RMA number has not been issued, will be returned to you at your expense. Authorized returns are to be shipped to the address on the RMA in an approved shipping container. It is suggested that the original box and packaging materials should be kept if a defective product needs to be shipped back to Fiber-Span. To request an RMA, please call 908.253.9080. 21 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com 20. Company Information 22 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com Appendix A FS31R-15C RRU Media Converter This section calls out the hardware needed and explains how to connect the media converter section of the Remote Repeater Unit (RRU) for approving its functionality. Hardware Needed 1. One media converter (for use as reference) including its power supply. 2. One SFP module. 3. Two 9/125 um single mode fibers SC/APC-to-LC/PC (1 meter length). 4. Three Ethernet cables (RJ45 connectors). 5. One PC or Laptop. How to connect:
1. Before applying power, connect all three Ethernet cables;
a. Connect Cable 1 from PC to RRU USB port. b. Connect Cable 2 from reference media converter to Switch. c. Connect Cable 3 from Switch to Local Area Network (LAN). 2. Using two single mode fiber patch cable (~1 meter length), connect the fiber cable end to RRU optical out port and the other cable end to the media converter input. Connect the other fiber cable to the RRU optical in port and the other cable end connect it to the media converter output. 3. Always terminate RRU RF port with a 50 Ohm Load. 4. Apply power to the media converter and the RRU. A-1 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com Cable Cable Media RRU Ethernet Ethernet
(DUT) 2- Single 180-0113 Converter Reference Mode Fiber FS31R-15C Dell Power Connect 16-Port Gigabit Ethernet Switch or Turn on the PC and open an internet browser. Using a search engine like Google, check on the Figure 11: RRU Media Converter Test Setup Block Diagram
>> Using PC open and access WEB Equivalent Ethernet Cable LAN internet for the todays news. If you are able to do so, the media converter section is functioning properly. With this step the fiber medium has been proving to work at 0dBo, now replace both fiber cables with two 10 dBo single mode fiber patch cables and retest. Troubleshooting Tip The optical transceivers in-use has a high sensitivity margin that operates from 0 to 10 dBo optical loss this is not expected to be an issue. Upon encountering an issue, check that the fiber cables are not kinked or bend excessively. If issue continues, unplug every optical connector and A-2 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com re-clean tip with isopropyl alcohol until the internet is accessible. Another problem can be that the fiber cables are incorrectly crossover. The fiber path of the RRU transmitter side connects to the Receiver side on the reference media converter and the fiber path of the RRU receiver side connects to the transmitter side of the reference media converter. A-3 3434 Rt. 22W Suite 140 Branchburg, NJ 08876 908.253.9080 fiber-span.com