FCC ID: EV9N2-4XE1-5G3 Point to Point Transceiver

2.2.5 Antennas

. Antenna Type 2' dish plane polarized, 28.5 dbi 2' dish dual polarized, 28.5 dBi

*4 ' diameter dish, plane polarized, 33.5 dBi

*4' diameter dish, dual polarized, 33.5 dBi 14" flat panel . 23 dBi 2 ft dish, 26 dBi 6" ft flat panel, 18 dBi Manufacturer and Part Number Gabriel SSP2-52ARI Gabriel SSD2-52ARI Gabriel SSP4-52A Gabriel SSD4-52A MTI Technology MT30102 Radiowaves SP1-5.2NL Gabiriel DFPD 5-52 The 4-foot dish antennas are for use outside the USA only, and are not FCC compliant. Maximum Power, dBm, into antenna 18 dBi 23 dBi 26 dBi Mti Panel Gabriel panel Radiowaves dish 28.5dBi Gabriel dish fo MHz 5250-

5350 5807.3 5733.6 all others Max P, dBm Max P, dBm Max P, dBm Max P, dBm NOT USED**

4**

12 12 0**

12 12 12 NOT USED**

NOT USED**

4**

12 12 0**

8**

8**

** limited by EIRP and PSD restrictions in 15.407(a),(b) of FCC Rules 2.2.6 Diagnostics

N2-4XE1 Installation and Operations Manual Part Number 281-102471-201 February 2000 Wireless, Inc. 5452 Betsy Ross Drive Santa Clara, CA 95054-1101 N2-4XE1 nstallation and Operation Manual Notice Information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of Wireless, Inc. Copyright 2000, Wireless, Inc. All rights reserved. N2-4XE1 and ACCESS Series are trademarks of Wireless, Inc. ii N2-4XE1 Installation and Operation Manual Table of Contents 1.0 General Overview ................................................................................................................. 1 1.1 1.2 1.3 N2-Link Series Product Family .................................................................................. 1 Introduction to the N2-4XE1 ...................................................................................... 1 Regulatory Information .............................................................................................. 2 2.0 N2-4XE1 Product Profile ....................................................................................................... 3 2.1 2.2 2.3 2.4 2.5 General Overview ...................................................................................................... 3 Specifications ............................................................................................................ 7 User Interfaces ........................................................................................................ 10 ODU Performance Monitoring ................................................................................. 13 Theory of Operation ................................................................................................ 13 3.0 Equipment Installation and Commissioning ........................................................................ 20 3.1 3.2 3.3 3.4 Installation ............................................................................................................... 20 Install the IDU .......................................................................................................... 21 Outdoor RF Unit Installation .................................................................................... 22 Commissioning ........................................................................................................ 28 4.0 Maintenance and Troubleshooting ...................................................................................... 30 4.1 4.2 N2-4XE1 Maintenance ............................................................................................ 30 Identifying and Resolving Receive Signal Strength Issues ..................................... 31 4.3 Where to Get Further Assistance ............................................................................ 32 4.4 Return Procedure .................................................................................................... 33 Appendix A Grounding Practices and Lightning Protection Information ....................................... A-1 Appendix B Installation Instructions .............................................................................................. B-1 Appendix C Adjustable Panel Antenna Mount .............................................................................. C-1 iii N2-4XE1 Installation and Operation Manual Figures Figure 2.1 Typical Deployment of a N2-4XE1 in a Point-to-Point Configuration ........................ 5-6 Figure 2.2 N2-4XE1 Link IDU ...................................................................................................... 10 Figure 2.2a Outdoor Unit, Front View ............................................................................................ 12 Figure 2.2b Outdoor Unit, Back View ............................................................................................ 12 Figure 2.3 Block Diagram, IDU .................................................................................................... 14 Figure 2.4 N2-4XE1 Block Diagram ....................................................................................... 18-19 Figure 3.1 N2-4XE1 Link Rack Mount ......................................................................................... 21 Figure 3.2 Outdoor Unit Mounting Hardware .............................................................................. 22 Figure 3.3 Mounting the Outdoor RF Unit to the Bracket ............................................................ 23 Figure 3.3a Mounting the Bracket Latch and Stand Mount Detail ................................................. 24 Figure 3.3b Locking the Mounting Hardware ................................................................................ 25 Figure 3.3c N-Type Antenna and Siamesed Ethernet/Power Connections .................................. 26 Figure 3.3d Ground Connection .................................................................................................... 27 Figure B.1 Two Foot Diameter Antenna ..................................................................................... B-1 Figure B.2 Mount Configuration .................................................................................................. B-3 Figure B.3 Mounting Hardware Packed ...................................................................................... B-5 Figure B.4 Mounting Hardware Unpacked .................................................................................. B-5 Figure B.5 Parabolic Reflector .................................................................................................... B-8 Figure B.6 Unpacking the Radome ............................................................................................. B-8 Figure B.7 Antenna Mount Assembly ......................................................................................... B-9 Figure B.8 Antenna Mount Assembly ....................................................................................... B-10 Figure B.9 Elevation Rod Assembly ......................................................................................... B-10 Figure B.10 Feed Horn Installation ............................................................................................. B-11 Figure B.11 Feed Horn Polarization Markings ............................................................................ B-12 Figure B.12 Parabola Rear View Showing Polarization Reference Markers .............................. B-12 Figure B.13 Feed Horn Installation ............................................................................................. B-13 Figure B.14 Feed Horn Installation for Vertical Polarized Operation .......................................... B-13 Figure B.15 Azimuth Clamp/Shear Stop Assembly .................................................................... B-14 Figure B.16 Azimuth Adjustment Clamp Assembly ................................................................... B-14 Figure B.17 Hoisting the Antenna ............................................................................................... B-15 Figure B.18 Antenna Alignment using RSL Output while adjusting the antenna ....................... B-16 Figure C.1 Antenna Mount .......................................................................................................... C-1 Figure C.2 Azimuth and Elevation Planning ............................................................................... C-2 Figure C.3 Azimuth and Elevation Planning ............................................................................... C-3 Figure C.4 Flat Panel Antenna .................................................................................................... C-4 Figure C.5 Adjustable Panel Antenna Mount .............................................................................. C-5 iv N2-4XE1 Installation and Operation Manual Tables Table 1.1 FCC U-NII Bands ......................................................................................................... 2 Table 2.1 Recommended Antennas ............................................................................................. 8 Table 2.2 Features Available Through RS-232 Interface ........................................................... 11 Table 3.1 Inventory of Equipment and Installation Materials ..................................................... 20 Table 3.2 Installation Checklist ................................................................................................... 28 Table 3.3 Approximation Table .................................................................................................. 29 Table 4.1 Frequencies ................................................................................................................ 31 v N2-4XE1 Installation and Operation Manual Welcome!

Welcome to the Wireless, Inc. N2-ACCESS Series product family. This manual is designed to introduce you to the N2-4XE1, and to provide you with information necessary to plan, install, operate and maintain a N2-4XE1 wireless communication system. The N2-4XE1 is intended for professional installation only. This manual, however, is also designed for personnel who plan, operate and administrate the N2-4XE1 communication system. Please review the entire manual before powering up or deploying any N2-4XE1 . Updates to this manual will be posted on the Wireless, Inc. Customer Service Website at http://www.wire-less-inc.com. Registered Wireless customers can access Wireless on-line information and support service, available 24 hours a day, 7 days a week. Our on-line service provides users with a wealth of up-to-date information, with documents being added or updated each month. Radiation Warnings Microwave Radio Radiation Warning Under normal operating conditions, N2-4XE1 radio equipment complies with the limits for human exposure to radio frequency (RF) fields adopted by the Federal Communications Commission (FCC). All Wireless, Inc. microwave radio equipment is designed so that under normal working conditions, microwave radiation directly from the radio is negligible when compared with the permissible limit of continuous daily exposure recommended in the United States by ANSI/IEEE C95.1-1991 (R1997), Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. Microwave signal levels that give rise to hazardous radiation levels can exist within transmitter power amplifiers, associated RF multiplexers, and antenna systems. Never look into the open end of a Waveguide as eyes are particularly vulnerable to radiation. Do not disconnect RF coaxial connectors, open microwave units, or break down any microwave screening while the radio equipment is operating. vi Microwave Antenna Radiation Warning N2-4XE1 Installation and Operation Manual Designed for point-to-point operation, an N2-4XE1 microwave radio system will use directional antennas to transmit and receive microwave signals. These directional antennas are usually circular or rectangular in shape, are generally located outdoors, and are usually mounted on a tower or mast. Referencing OET Bulletin 65 (Edition 97-01, August 1997) from the Federal Communication Commissions Office of Engineering & Technology, limits for maximum permissible exposure

(MPE) to microwave signals have been adopted by the FCC for both Occupational/Controlled environments and General Population/Uncontrolled environments. These limits are 5.0 mW/

cm2 and 1.0 mW/cm2, respectively, with averaging times of six-minutes and thirty-minutes, respectively. The closer you are to the front center-point of a microwave antenna, the greater the power density of its transmitted microwave signal. Unless you are very close, however, microwave exposure levels will fall far below the MPE limits. To determine how close to a microwave antenna you can be and still remain below the MPE limits noted above, worst case predictions of the field strength and power density levels in the vicinity of an N2-4XE1 microwave antenna can be made from the following calculations. The equation is generally accurate in the far-field of an antenna, and will over-predict power density in the near-field (i.e. close to the antenna). S = PG/4R2 where:

S = power density (in mW/cm2) P = power input to the antenna (mW) G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna (cm) Note that G, the power gain factor, is usually expressed in logarithmic terms (i.e., dB), and must be converted using the following equation:

G = 10dB/10 For example, a logarithmic power gain of 24 dB is equal to a numeric gain of 251.19. Assuming (1) maximum output power from the N2-4XE1 (+3.5 dBm [2.238 mW]), (2) no signal loss in the cable connecting the N2-4XE1 to the antenna, and (3) the use of a 27 dBi gain parabolic antenna, the 5.0 mW/cm2 and 1.0 mW/cm2 MPE power density limits would be reached at distances of approximately 4.22 cm and 9.44 cm, respectively. Wireless, Inc. fully supports the FCCs adopted MPE limits, and recommends that personnel maintain appropriate distances from the front of all directional microwave antennas. Should you have questions about N2-4XE1 microwave signal radiation, please contact the Wireless, Inc. Customer Service Department. vii N2-4XE1 Installation and Operation Manual Notice Regarding Operation pursuant to FCC part 15 Rules 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 instruction 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 his own expense. viii N2-4XE1 Installation and Operation Manual 1.0 General Overview 1.1 N2-Link Series Product Family All N2-4XE1 radios are members of the N2-ACCESS Series radio product family. The N2-

ACCESS Series is designed to provide an economical wireless solution for local access telecommunication requirements. This manual addresses, in detail, the operation of the N2-4XE1. For detailed information on other members of the N2-ACCESS Series, please refer to the appropriate Operation Manual(s). 1.2 Introduction to the N2-4XE1 The N2-4XE1 is a digital radio using BPSK modulation techniques and is designed for use as a point-to-point communications system. The N2-4XE1 is used in the following applications:

point-to-point (building to building), ISPs, CLECs, Wireless Local Loop (WLL), Backup Solutions and Temporary Links. The N2-4XE1 radio is designed for operation in two of the Unlicensed National Infrastructure at frequencies of 5.250 - 5.350 GHz or 5.725 - 5.825 GHz. Each N2-4XE1 is comprised of an indoor unit which provides the means to connect system power, formatted data, SNMP interface and RS-232 ports to monitor and control the link. An outdoor pole mounted RF unit is supplied as part of the system. Each link is powered by means of a DC power supply which is fed to the unit through a power/data cable. The system has a data total transmission capacity of 8.448 Mb/s. Refer to the N2-4XE1 data sheets for detailed information relating to product offerings and specifications. 1 N2-4XE1 Installation and Operation Manual 1.3 Regulatory Information In January 1997, the FCC made available 300 MHz of spectrum for Unlicensed National Information Infrastructure (U-NII) devices. The FCC believes that the creation of the U-NII band will stimulate the development of new unlicensed digital products which will provide efficient and less expensive solutions for local access applications. The U-NII band is divided into three sub bands at 5.15 - 5.25, 5.25 - 5.35 and 5.725 - 5.825 GHz. The first band is strictly allocated for indoor use and is consistent with the European High Performance Local Area Network (HIPERLAN). The second and third bands are intended for high speed digital local access products for campus and short haul microwave applications. Table 1.1 - FCC U-NII Bands 1dnaB 2dnaB 3dnaB ycneuqerF

)xaM(rewoP esUdednetnI zHG52.5ot51.5 zHG53.5ot52.5 zHG528.5ot527.5 PRIEsttawillim002 PRIEttaw1

)PRIE(sttaw4

ylnOesUroodnI supmaC selim01xorppA swolla8991,42enuJnodesiver)00M(redrodnanoinipomudnaromemCCFtnecerA:etoN*

forewoptuptuorettimsnartmumixamadnaniagiBd32htiwannetnalanoitceridafoesueht

.dnabIIN-U528.5-527.5ehtnittaw1 609772LW 2 N2-4XE1 Installation and Operation Manual 2.0 N2-4XE1 Product Profile 2.1 General Overview The N2-4XE1 series of microwave radio products provides digital capacities for 4XE1 data rates for short-haul applications up to 10 km. The radio terminal operates in the Unlicensed National Information Infrastructure (U-NII) spectrum with a revolutionary Split Modulation system architecture that provides full duplex operation in the 5.3/5.7 GHz U-NII frequency bands. The N2-4XE1 series provides the unique advantage of a very robust digital transmission scheme employing advanced Forward Error Correction (FEC) techniques to reduce data errors. The product uses two separate 100 MHz bands within the U-NII frequency spectrum. Within these bands, the N2-4XE1 series operates in one of many independent channels providing for frequency reuse and network flexibility, ideal for dense network applications. Synthesized RF channel selection is field configurable, as are the power output options for the selection of antenna sizes. Frequency coordination and installation guidelines are provided in the appendix section of this manual. Complying with all aspects of FCC Rules Subpart 15.401-15.407, the transmission character-

istics of the N2-4XE1 series are ideally suited to meet the peak power spectral density requirements of the U-NII 5.250 - 5.350 and 5.725 - 5.825 GHz bands. The N2-4XE1 has been designed for easy access to all interfaces, controls, and displays. Information in this manual will familiarize you with all of these items. Figure 2.1 illustrates two

(2) N2-4XE1 terminals in a point-to-point configuration. 3 N2-4XE1 Installation and Operation Manual This Page Left Blank Intentionally 4 N2-4XE1 Installation and Operation Manual Figure 2.1 (WL272904) goes here 5 N2-4XE1 Installation and Operation Manual Figure 2.1 (WL272904) goes here 6 2.2 Specifications 2.2.1 General Specifications Frequency Band:

Regulations:

Frequency Range:

Capacity Options:

2.2.2 Digital Interface Type:

Line rate:

Line Code:

Interface:

Connectors:

2.2.3 Transmitter Frequency Range:

Output Power (maximum):

2.2.4 Receiver N2-4XE1 Installation and Operation Manual Full-duplex operation in the Unlicensed National Information Infrastructure Complies with FCC Ruling Part 15, Subpart E (U-NII) 5,250 - 5,350 MHz and 5,725 - 5,825 MHz 4xE1 ITU-T/E1 Based on 4 E-1 inputs 4 x 2.048 Mb/s HDB3 75 unbalanced or optional 120 unbalanced BNC (75) or RJ-48C (120) 5.3 GHz (Low Band) 5,250 - 5,350 MHz 0 dBm

+4 dBm

+8 dBm

+12 dBm 5.7 GHz (High Band) 5,725 - 5,825 MHz 0 dBm

+4 dBm

+8 dBm

+12 dBm Type:

Sensitivity, BER 10-6 Typical:

Maximum RF Input:

Coherent Detection 85.5 dBm

-20 dBm Coherent Detection 85.5 dBm

-20 dBm 7 N2-4XE1 Installation and Operation Manual 2.2.5 Antennas Flat Panel:

Parabolic:

6 (15.24 cm) 12 (.30 m) 24 (.61 m) 2 (.61 m) 4 (1.22 m) Forward Gain 18 dB 23.5 dB 27 dB Front/Back Ratio 35 dB 41 dB 45 dB 28 dB 34 dB 38 dB 46 dB Table 2.1 - Recommended Antennas epyT iBd5.82,dezireloPenalP,hsidretemaid'2 rebmuNtraPdnarerutcafunaM IRA25-2PSSleirbaG iBd5.82,dezireloPlauD,hsidretemaid'2 IRA25-2DSSleirbaG iBd5.33,dezireloPenalP,hsidretemaid'4*

A25-4PSSleirbaG iBd5.33,dezireloPlauD,hsidretemaid'4*

A25-4DSSleirbaG iBd81,dezireloPenalP,lenaPtalF"6 25-5.SPFDleirbaG iBd5.32,dezireloPenalP,lenaPtalF"21 25-1SPFDleirbaG iBd5.82,dezireloPenalP,lenaPtalF"42 25-2SPFDleirbaG

.tnailpmocCCFtoneradna,ylnoASUehtedistuoesuroferasannetnahsidtoof-4ehT*

709772LW 2.2.6 Diagnostics Front Panel Indicators:

Alarms:

LED Power (normally On) Major Alarm On Minor Alarm Blinks External Alarm Inputs:

Performance Monitoring:

Two separate TTL level inputs, ground inputs to alarm

(DB9 connector) Receive Signal Strength Indicator (RSSI) 2.2.7 Power Input Voltage Range:

Power Consumption:

20 to 72 VDC 21 watts maximum 2.2.8 Environmental Temperature Range:

Altitude:

Humidity:

Indoor Unit

-10C to +50C 4,500 meters (15,000 ft) 95% non-condensing Outdoor Unit

-30C to +60C 4,500 meters (15,000 ft) Outdoor, all weather enclosure 8 2.2.9 Mechanical Dimensions (HxWxD):

N2-4XE1 Installation and Operation Manual Indoor Unit 44 x 483 x 240 mm

(0.72 x 19.0 x 9.4 in) Outdoor Unit 310 x 351 x 73 mm

(12.2 x 13.8 x 2.88 in) Weight:

2.9 kg (6.6 lbs) 5.2 kg (11.5 lbs) 2.2.10 FCC Information (US Only) This device has not been authorized as required by the rules of the Federal Communications Commission. This device is not, and may not be, offered for sale or lease, or sold or leased, until authorization is obtained. Notes:

1. N2-4XE1 is intended for professional installation only 2. Specifications subject to change without notice 9 N2-4XE1 Installation and Operation Manual 2.3 User Interfaces The N2-4XE1 provides user interfaces for fused DC power connection, electrical grounding, radio frequency (RF) antenna connection, E1 Data connection, configuration and RSSI output. The following provides information on each interface. Figure 2.2 shows the locations of each connection to the indoor unit. Indoor Unit, Connections 21-56 VDC Power Input - provided by customer, each terminal consumes 21 Watts 4xE1 Input/Output BNC type - E1 data conforming to the G.703 standard

(Optional RJ-48C Connection) NMS-Port - RJ-48C - SNMP interface for existing NMS systems Aux Port 1-RS-232 Connection, DB9 - provides local and remote control over terminals Aux Port 2-RS-232 Connection, DB9 - provides local and remote control over terminals ODU Power Interface - Category 3 Siamesed cable provided in the install kit ODU Data Interface - Category 3 Siamesed cable provided in the install kit Indoor Unit, Controls and Indicators Fuse/On-Off Switch - Fuse holder containing a 250 V, 3 amp fuse for protection of the system. The fuse can be rotated counterclockwise to disable the system, clockwise to enable. LEDs, Status and Alarm - The status LED confirms the system is on. The alarm LED indicates an alarm condition exists. The fault can be determined by means of the local RS-

232 interface on the IDU and a VT-100 terminal. G.703 Ground Switch - Enables the customer to configure the ground requirements of the E1 unbalanced connections according to the G.703 standard. LEDs, Link, TX and RX - Provide a visual indication of the status of the link, transmitter and receiver. Figure 2.2 - N2-4XE1 Link IDU Fuse -250V 3A 21-56 VDC Input G.703 Ground Switch RS 232 Interface, DB-9 Connector N2 - LinkTM

Digital Input 250V 3A 21-56V Status Alarms 1 2 3 4 Digital Output DC AC Link Tx Rx NMS Port AUX Port 1 AUX Port 2

ODU Interface Data Siamesed Cat 3 Data/Power To/From ODU WL272903 4xE1 Data Input/Output BNC-Type Connections NMS - SNMP Interface, RJ-48c 10 Outdoor Unit N2-4XE1 Installation and Operation Manual Date/Power Cable - Siamesed cat - 3 Data and power cables. RSSI - BNC type connector used for RSSI measurement. Antenna (RF) Connector - N-type connector used for connection with antenna. Main Power - The N2-4XE1 is designed to work from a power input of 20 to 56 VDC. Grounding Connector - The front panel of the N2-4XE1 is equipped with an M5 ground screw and associated washers. This ground screw serves as the proper chassis-ground connection point for an external ground source. The N2-4XE1 must be grounded in accordance with the electrical codes, standards, and practices governing the local installation. The following alarm configuration features are possible using the RS-232 interface:

Table 2.2 - Features Available Through the RS-232 Interface tinU smralAUDI noitpircseD tsoLataDUDO,mralAxumeD,mralALLP,4-1SIA noitarugifnoCUDI sehctiwS,noitarugifnoC,dnuorG,307-G smralAUDO rezisehtnyS,domeD,evieceR,CLA noitarugifnoCUDO noitceleSycneuqerF,noitaunettAFR,kcabpooLelbaC 209772LW 11 N2-4XE1 Installation and Operation Manual Figure 2.2a - Outdoor Unit, Front View Mounting Studs Figure 2.2b - Outdoor Unit, Back View WL272910 Antenna Connection

(N Type, Female) Receive Signal Level (RSL) Output (BNC Type, Female) Siamesed Category 3 Ethernet and Power cables ODU Ground Connection WL272905 12 2.4 ODU Performance Monitoring N2-4XE1 Installation and Operation Manual RSSI - A voltage provided through a BNC connector on the outside of the ODU. The RSSI port is used for antenna alignment during installation and for periodic measurement of Receiver/

Path performance. The RSSI voltage is related to Rx BER from -30 dBm to -90 dBm. 2.5 Theory of Operation General Overview The N2-4XE1 is a point to point Wireless Extension operating in the 5.3/5.7 GHz UNII band as authorized in rule sections 15.401 through 15.407. The unit is enclosed in a weather proof outdoor enclosure and is intended to provide data links over distances up to 10 km. The radio in the unit operates full duplex, transmitting and receiving data at the rate of 8.448 Mbps. The radio is modulated using BPSK. 2.5.1 N2-4XE1 Indoor Unit Circuit Description The following circuit description is intended to explain the operation of the indoor and outdoor units at the block diagram level. This text is written with the idea that the reader has the block diagram readily available, as it will aid in understanding the signal flow in the radio. Four E1 rate tributaries are time division multiplexed and input to the IDU protection circuit by means of four panel mounted BNC type connectors. The LIU (Line Interface Unit) converts the 4xE1 data stream from a bipolar HDB3 signal which is input to the Mux/Demux and converts the 4E1 signal to an aggregate signal. The FGPA scrambles the data into a pseudo random pattern which passes the data back to the mux and through an E2 rate line interface to and from the ODU. The microcontroller acts as the processing core to manage all external and internal functions of the IDU/ODU. This includes monitoring the ODU, IDU for alarm conditions, as well as providing SNMP and RS-232 control over the terminal. See Figure 2.3. 13 N2-4XE1 Installation and Operation Manual J16 Status Lead R J 1 Fuse J15 J 2 3 Figure 2.3 - Block Diagram, IDU IDU Board Power Supervisor Reset CPU 68EN302 EEPROM 2K PIO Modem Driver PIO CSO CS1 Addr Data 5V DC-DC Converter 3.3V Reg SCC2 SCC3 Ether SCC1 RASO CS2 RS232 XCVR Ethernet XCVR Boot 512K Flash1 512K Flash2 512K 303V XCVR addr data DRAM 8M Data Addr Addr Decode FPGA Status Regs TAO Cntrl Regs Radio Sync OTPROM De-Scrambler Scrambler E2 LIU E1 / E2 MUX E1 LIU1 E1 LIU2 E1 LIU3 E1 LIU4 14 Front Panel Board Aux 2 Aux 1 Ether Link Leds UNI/BI SW E1 BNC TX RX WL055001 2.5.2 N2-4XE1 Outdoor Unit, Transmitter N2-4XE1 Installation and Operation Manual The data is differentially encoded and scrambled before it is routed through the transmit baseband filter to provide spectral shaping. The baseband filter is a five pole low pass filter. After amplification, the baseband signal is fed to the modulator consisting of a doubly balanced mixer. The modulator is running directly at the transmitter frequency of 5.775 GHz 50 MHz. The local oscillator signal of the mixer is supplied from the frequency synthesizer section, with the frequency dependant on the RF channel selected. Operation of the frequency synthesizer will be detailed later in this document. From the output of the modulator, the signal is amplified and then passed through a 150 MHz wide bandpass filter to remove any local oscillator products from the output spectrum. After filtering, the signal is passed through a series of amplifier and attenuator stages that are used to control the output power level. With a combination of fixed and variable attenuation the output power can be set to one of four different levels to accommodate different antennas used with the product. The power setting is maintained by an active ALC circuit that samples the transmitter output power and then adjusts the variable attenuator to keep the output power constant over the operating temperature of the unit. The power level is controlled to within 1 dB of the set point. Following the attenuators the signal is fed through additional amplification to bring the output level to a maximum of +13 dBm at the output of power amplifier. A lowpass matching section follows the power amplifier to aid in filtering harmonics of the signal. After passing through the duplexer, the power level at the antenna port is a maximum of +11 dBm. 15 N2-4XE1 Installation and Operation Manual 2.5.3 N2-4XE1 Outdoor Unit Receiver The receiver in the N2-4XE1 is a conventional dual conversion design with IF frequencies of 474.88 MHz and 70 MHz. From the receive port of the duplexer, the low level input signal is passed through a low noise preamplifier that provides 25 dB of gain. Following the preamplifier the signal is passed through a 200 MHz wide bandpass filter to provide image rejection for the first mixer. The signal is then mixed with the first LO to convert the signal to 474.88 MHz. Following further amplification the signal is passed through a five pole, 20 MHz wide bandpass filter. This filter provides image filtering for the second mixer, and also helps attenuate signals on the adjacent receive channels. After filtering, the signal is further amplified and then passed through a variable attenuator stage before it is applied to the second mixer. The output of the second mixer is at 70 MHz. The 70 MHz IF stages provide additional gain along with two sections of variable attenuation for the AGC function. The primary adjacent channel filtering is also at 70 MHz where the signal is passed through a 12 MHz wide SAW filter. The combination of filters provide a minimum of 47 dB of attenuation at the adjacent receive channels ( 10.24 MHz). At the end of the 70 MHz IF chain the signal is fed into a quadrature demodulator. The carrier recovery loop consists of a four quadrant multiplier that multiplies I and Q baseband signals to create an error voltage. This error voltage is then amplified and fed back to the 70 MHz VCO. This forms a phase locked loop that is locked to the received carrier frequency. The 70 MHz output is also fed into a wide band logarithmic amplifier that provides a DC voltage output proportional to the 70 MHz signal strength. The DC voltage is then integrated and fed back to the variable attenuator stages to form an AGC control loop. This control loop keeps the signal level at the input to the demodulator chip constant over the entire operating range of the receiver. Data recovery from the I baseband signal begins by passing the I signal through a slicer. The output of the slicer is a digital signal that contains both data and clocking information. A clock recovery circuit recovers receive timing information that is needed to clock the data through the descrambler, and differential decoder. 16 2.5.4 Synthesizer N2-4XE1 Installation and Operation Manual The FPGA provides four 22-bit streams in a serial format loaded to the synthesizer. This data provides all of the possible frequencies at which the system can operate. Depending upon the dip switch settings selected, the actual frequency being used is selected. When the reset button is pressed, the FPGA will reload this data to the synthesizer. Frequency Synthesis The local oscillator frequencies used in the RF Unit are all synthesized from a 19.2 MHz, 2.5 PPM reference oscillator. The overall frequency stability of the radio is 2.5 PPM, directly reflecting the reference oscillator stability. A dual frequency synthesizer chip is used to control both the first and second local oscillator loops. This chip supports one high frequency oscillator, up to 1.5 GHz, and one lower frequency oscillator to be used as a second LO. The first local oscillator VCO operates at one half the transmitter output frequency, and changes with the transmit channel selected. The first LO consists of a bipolar VCO operating at 2.887 GHz 25 MHz. The output of this VCO is buffered and then passed through a X2 prescaler chip before being fed back to the synthesizer chip. The phase comparison frequency for the first LO is 320 kHz. After amplification the 2.887 GHz signal is passed through a frequency doubler to create the 5.775 GHz signal that is applied to the mixer stages. The second local oscillator consists of a VCO that is phase locked to 404.88 MHz. This auxiliary synthesizer is operating with a phase comparison frequency of 240 kHz. 17 N2-4XE1 Installation and Operation Manual This Page Left Blank Intentionally 18 N2-4XE1 Installation and Operation Manual Figure 2-4 (WL272902) goes here 19 N2-4XE1 Installation and Operation Manual Figure 2-4 (WL272902) goes here 20 3.0 Equipment Installation and Commissioning N2-4XE1 Installation and Operation Manual 3.1 Installation The N2-4XE1 has been specifically designed for ease of installation. The following installation instructions should be followed. 1. Plan the installation - Decide where each component of the N2-4XE1 will be placed prior to commencement of any installation activity. Installation considerations for each compo-

nent in general are as follows:

a. Indoor Unit - Install in floor or rack mount configuration. b. Outdoor RF Unit - Mount as close as practical to the Antenna assembly. The maximum distance is determined by the included interconnect cable which is 1 meter in length. Determine pole mounting details for the Outdoor Unit and Antenna. Adjust output power according to Table 3.1. c. Antenna Unit - See Appendix B. 2. Inventory your equipment and installation materials. To install one (1) terminal you should have the items shown in Table 3.1. 3. The following tools should be on hand:

Tool Wire Stripper/Cutter Hand-Held Voltmeter (DMM) 2 Adjustable Wrenches

#2 Philliips Screwdriver Purpose General wire stripping and cutting purposes Confirm magnitude, polarity, continuity with standard probes Antenna mounting, Outdoor Unit up to 1.5 cm Outdoor Unit Grounding Table 3.1 - Inventory of Equipment and Installation Materials ytQ 1 1 1 1 1 1 noitpircseD UDIX4-2N tiKllatsnIUDIX4-2N UDOX4-2N srenetsafdetaicossadnatekcarBtnuoMllaWroeloP elbaCrewoPylppuSCDV84/ataDdesemaiS ylbmessAelbaClaixaoCelaM-NotelaM-N 309772LW 21 N2-4XE1 Installation and Operation Manual 3.2 Install the IDU 1. Choose either a desktop or rack mount mounting location. For a desktop mount configuration, the unit can be installed directly out of the box. For rack mounting the IDU, installation kit contains rack mounting brackets for flush or projection mounting. See Figure 3.1 for IDU Install Kit. Remove the desktop mounting feet and install the rack mount brackets. 2. Make the following connections to the IDU:

21-56 VDC Input 4xE1 Data Input/Output BNC-Type Connections G.703 Ground Switch NMS - SNMP Interface, RJ-48C Aux 1 (DB-9, Terminal Interface, RS-232) Aux 2 (DB-9, Aux Serial port or Alarm Input) Siamesed Cat. 3 Data/Power To/From ODU Figure 3.1 - N2-4XE1 Link Rack Mount 12 x 24 Rack Screws 4 Places N2 - LinkTM

Digital Input 250V 3A 21-56V Status Alarms 1 2 3 4 Digital Output DC AC Link Tx Rx NMS Port AUX Port 1 AUX Port 2

ODU Interface Data WL272911 22 N2-4XE1 Installation and Operation Manual 3.3 Outdoor RF Unit Installation General The outdoor unit is installed by means of a pole mount adaptor bracket (wall mount optional) that is secured to the pole using two metal hose type clamps. Figure 3.1 shows the hardware provided to mount the Outdoor RF Unit. 1. Install the outdoor unit pole mount adaptor bracket using the supplied metal hose type clamps. See Figure 3.2. 2. Align the four mounting studs on the outdoor unit with the bracket holes (See figure 3.3) and secure to the bracket by pushing down the latches as shown in Figures 3.3a and 3.3b. 3. Connect the Siamesed Category 3 Data/power cable, the N-type antenna and the ground connections as shown in Figures 3.4a and 3.4b. Figure 3.2 - Outdoor Unit Mounting Hardware Wall Mount Bracket

(Optional) Pole Mount Bracket Pole Mount Bracket Fasteners Siamesed Catagory 3 Ethernet and Power Cable for IDU to ODU Interconnection N-Male to N-Male ODU to Antenna Coaxial Cable Assembly WL272909 23 N2-4XE1 Installation and Operation Manual Figure 3.3 - Mounting the Outdoor RF Unit to the Bracket Outdoor Unit Pole Mount Bracket WL272912 24 N2-4XE1 Installation and Operation Manual Figure 3.3a - Mounting Bracket Latch and Stud Mount Detail Detail of Latch Mechanism for Securing the Outdoor Unit to the Pole Mount

(4 Places on Bracket) Outdoor Unit Mounting Studs placed through this hole WL272913 25 N2-4XE1 Installation and Operation Manual Figure 3.3b - Locking the Mounting Hardware Press locking latches down to secure the ODU to the pole mount bracket Mounting Studs x 4 WL272906 26 N2-4XE1 Installation and Operation Manual Figure 3.3c - N-Type Antenna and Siamesed Ethernet/Power Connections N-Type Antenna Connector Siamesed Category 3 Data/Power Cable WL272907 27 N2-4XE1 Installation and Operation Manual Figure 3.3d - Ground Connection Ground Cable

(not supplied) WL272908 28 N2-4XE1 Installation and Operation Manual 3.4 Commissioning 1. Visually verify that the N2-4XE1 is properly mounted. 2. Verify that the DC power input to the N2-4XE1 is on. Refer to Table 3.2. 3.4.1 Configuring N2-4XE1 System Antennas The antennas used on an N2-4XE1 radio system are generally configurable for either vertical or horizontal polarization. It is extremely important to verify that both antennas are configured for the same polarization, and that the appropriate antenna polarization has been selected for the specific radio link. Table 3.2 - Installation Checklist tsilkcehCnoitallatsnI

?eruceserawdrahgnitnuomkcarehtsI

?dednuorgylreporptinuehtsI

?detcennocylreporpannetnaehtsI

?tcerrocdnaecalpnisnoitcennocatadehterA 809772LW 3.4.2 Aligning the N2-4XE1 System Antennas With the N2-4XE1 at each site properly configured for operation, antenna alignment must be performed at both sites. Proper antenna alignment is crucial to the proper operation of an N2-

4XE1 radio system, and should only be accomplished by experienced professionals. The N2-4XE1 is equipped with a ODU mounted BNC-(f) RSSI connector to which an analog or digital voltmeter can be connected. The voltage range at the test point, between the center conductor of the connector and ground, varies from approximately two VDC to four VDC, serving as a receive signal strength indicator (RSSI). The stronger the receive signal, the higher the RSSI voltage. Emanating from a microwave antenna is a main beam (or lobe) of RF energy, surrounded by RF side lobes. The beamwidth of the main beam varies with the size and type of antenna, as well as the specific frequency of the RF signal, and is generally defined by the nominal total width of the main beam at the half-power (-3 dB) points. Side lobes surround the main beam at specific angle distances, and will be lower in power than the main beam. When aligning an antenna system, it is extremely important to verify that the antennas are both aligned on the main beam, not on a side lobe. Referencing Table 3.3, the first side lobe will generally be located at an angle slightly less than twice the antenna beamwidth. Following the course alignment of an antenna system, a common practice when performing a fine alignment is to slowly swing each antenna (one at a time!) in both vertical (elevation) and horizontal (azimuth) planes to verify that the main beam and first side lobe can be accurately identified. This insures that accurate alignment of the antenna system on the main beam has been accomplished. 29 N2-4XE1 Installation and Operation Manual Each N2-4XE1 is shipped with an RSSI test sheet, showing the relationship between the receive signal strength level (in dBm) and the RSSI level (in VDC). These RSSI test sheets are often referred to as AGC Curves. The RSSI test sheets can be used to verify that the calculated receive signal levels match up with the actual receive signal levels. Substantial differences between calculated and actual levels could point to transmission system problems, side lobe alignment, path obstructions, etc. Table 3.3 - Approximation Table elytSdnaretemaiDannetnA

)iBd(niaG

)seerged(htdiwmaeBBd3 cilobaraptoof-2

*cilobaraptoof-4 lenaptalftoof-1 lenaptalftoof-2 5.82 2.03 5.32 5.82 1.6 1.3 4.9 7.4

.tnailpmocCCFtoneradna,ylnoASUehtedistuoesuroferasannetnahsidtoof-4ehT*

909772LW 30 4.0 Maintenance and Troubleshooting N2-4XE1 Installation and Operation Manual The N2-4XE1 contains static sensitive components, and has no user-serviceable parts. 4.1 N2-4XE1 Maintenance The N2-4XE1 is designed to operate with no scheduled maintenance activities. From a precautionary perspective, a regular check of power supply input voltages and RSSI voltages should be planned by the user. 4.1.1 RSSI Voltage The Wireless Customer Service department recommends a monthly check of the N2-4XE1s RSSI voltage. Variations in the RSSI voltage could be an indicator of antenna or antenna feed movement, loose or improper RF cabling or connectorization, path obstructions or reflections, etc. 31 N2-4XE1 Installation and Operation Manual 4.2 Identifying and Resolving Receive Signal Strength Issues There are a great number of items which can affect the transmission of a microwave signal from one site to another. Every microwave path is unique, and must be evaluated for performance before a radio link is installed. Outside of radio equipment issues, antenna alignment, RF signal blockage, and multipath fading are among the most common transmission problems experienced in the field. 4.2.1 N2-4XE1 Equipment Issues Frequency Selection 1. Verify the transmit/receive frequency selection for each N2-4XE1 radio is set appropri-

ately, and that a matched pair of radios has been selected for the system. Each N2-4XE1 terminal can be set to the frequencies listed in Table 4.1. 2. To reduce the possibility of co-adjacent channel interference, proper frequency coordina-

tion and antenna polarization is used to isolate each channel. The concept is to achieve maximum RF isolation between link channels by means of frequency spacing and antenna polarization. In a star configuration an optimum frequency and antenna polarization plan is provided to demonstrate an example of maximum isolation between links (See Figure 4.1). Table 4.1 - Frequencies

.oNlennahC 1

'1 2

'2 3

'3 4

'4 5

'5 6

'6 7

'7 8

'8 ycneuqerF 8062.5 865337.5 40172.5 29547.5 82182.5 61657.5 25192.5 4667.5 67103.5 46677.5 00213.5 88687.5 42223.5 21797.5 84233.5 63708.5 019772LW 32 4.3 Where To Get Further Assistance N2-4XE1 Installation and Operation Manual Your primary source of assistance is the support staff of the organization from which you purchased this product. The Wireless, Inc. support staff should only be contacted directly if you purchased this product directly from Wireless, Inc., or if you are unable to obtain sufficient assistance from your primary support contact. General Product and Company Information Wireless, Inc. 5352 Betsy Ross Drive Santa Clara, CA 95454-1101 USA Tel:

Fax:

E-mail:

Website:

+408 727 8383

+408 727 1259 info@wire-less-inc.com www.wire-less-inc.com Detailed Product Information, Sales, Pricing Information and Pre-Sales Technical Support Wireless, Inc. Sales Department 5352 Betsy Ross Drive Santa Clara, CA 95454-1101 USA Tel:

Fax:

E-mail:

Website:

+408 727 8383

+408 727 0990 info@wire-less-inc.com www.wire-less-inc.com Post-Sales Technical Support (Customer Service) To assist you with field issues and, if necessary, to arrange for repair services, Wireless, Inc.s Customer Service department can be reached via telephone, facsimile, e-mail, mail, or through our Website. 33 N2-4XE1 Installation and Operation Manual 4.4 Return Procedure All material returned to Wireless, Inc. must be accompanied by a Return Material Authorization

(RMA) number from Wireless, Inc.'s Customer Service department. If you purchased your Wireless, Inc. product through a distributor, the Wireless RMA number should be obtained through the distributor. An RMA number is necessary to assure proper tracking and handling of returned material at the factory. Wireless, Inc. reserves the right to refuse shipments not accompanied by an RMA number. Refused shipments will be returned to the shipper via collect freight. To obtain an RMA number, contact Wireless, Inc. as follows:

Telephone:

Fax:

E-mail:

+408 727 8383

+408 727 1259 customerservice@wire-less-inc.com The following information will be required to issue an RMA number:

Part Number Serial Number Failure Description Contact person, telephone, and fax numbers Ship-to address Bill-to address*

Customer purchase order* (P.O.) or reference number

* Required for non-warranty repair services. For non-warranty repair services, an RMA number will be issued when Wireless, Inc. acknowledges the purchase order. Important - All non-U.S. returns must include 5 copies of proforma/customs invoice for each shipment which lists:

RMA number Value of items Description of items (including the Wireless model or part number) Please send all returns to:

Wireless, Inc. Attn: RMA Department 5452 Betsy Ross Drive Santa Clara, CA 95054-1101 USA RMA No. __________ The customer is responsible to properly label and package repairs and prepay shipping to Wireless, Inc. If possible, the original packaging material should be used to return electronic parts. The RMA number must be visible on the outside of all packages returned. Unless other arrangements have been made, all repairs are shipped back to the customer prepaid via ground carrier. 34 Appendix A Grounding Practices and Lightning Protection Information N2-4XE1 Installation and Operation Manual General Good grounding (earthing) practices, when used in telecommunications, have some direct benefits which can help you maximize the up time of your system as well as ensure the safety of those people working on the system. Among these benefits are:

1. Protection of personnel from electric shock and fire hazards. 2. Reduction of radiated and conducted electromagnetic susceptibility. 3. Improved system tolerance to discharge of electrostatic energy and lightning interference. 4. Minimized service interruptions and service damage. There is no practice or formula which can completely eliminate the above risks, but we at Wireless, Inc. believe that good grounding and bonding practices can significantly reduce the risk of many of these hazards. We have included a bibliography at the end of this appendix which contains several publications that are readily available and contain detailed information on many aspects of grounding systems and their design, implementation, measurement, and maintenance. Please note that every telecommunication site is unique, and must be evaluated accordingly. The following information is provided for generic reference and educational purposes only. The grounding plans and practices for a given site should only be established and accomplished by trained professionals, working in accordance with local practices and regulations. Ground Connections There should be a grounding plan designed at the outset of site design in order to provide the best grounding procedures and to minimize ground loop currents. This should be achieved by connecting the outer conductors of the cables through a large section copper strap to a central grounding point and the size of the conductor should be increased as each branch path is added. The final conductor should be connected directly to the grounding system. For a radio site a single copper grounding rod is insufficient because its impedance is likely to be too high. Lightning Protection Radio sites can be particularly prone to lightning strikes by virtue of their normally exposed locations and the presence of relatively tall antenna support structures. It is not possible to provide and guarantee complete protection from the effects of lightning;

however, they can be significantly reduced by careful attention to grounding, protection devices, and the layout of the site itself. Reference should also be made to various publications, some of which are listed in the Bibliography. Where any site owner or user is in doubt about the protection requirements for any particular location, the appropriate authority should be consulted. A-1 N2-4XE1 Installation and Operation Manual Protection Arrangements The purpose of any protection arrangement should be to provide a suitable path to ground for the lightning current, to ensure adequate bonding between structures and all metalwork on the site and the common grounding system in order to reduce the side flashing, and to attempt to prevent the entry of flashes or surges into the building. The resistance to ground should be kept to a minimum and a value of less than 10-ohms is recommended. The most important feature is that the system should ideally be at equal potential across the entire site. Certain authorities and service providers have their own particular practices which have to be followed where applicable. Arrangements will vary considerably from very simple sites to complicated sites with multiple buildings, antenna support structures and associated equipment, and may involve integration with existing systems. Such systems may require upgrading. Lightning Conductors Down conductors, bonding interconnections, ground rings and radial tapes should be of copper cable or solid copper tape with a minimum cross section according to local practice with all connections protected by non reactive paste. Protected test points should be included if appropriate, and sacrificial ground lugs should be clearly marked and easily accessible for periodic inspection. Grounding of Antenna Support Structures A structure will generally act as its own lightning conductor and therefore will not require an additional conductor from the top to the base. A lightning rod may be required to extend the zone of protection to protect equipment mounted on the top of the structure. The lightning rod should extend 2.5-meters above the highest equipment. Ground mounted support structures should be connected at their base to a ground ring via sacrificial ground lugs. Towers should have a connection from each leg. A ground ring should consist of copper cable or solid copper tape with ground rods equally spaced at 2-meter intervals around the base of the structure as close to it as possible, buried approximately 0.6-meters deep where soil conditions allow. An alternative method using radials rather than rings is detailed in The Grounds for Lightning and EMP Protection, second edition, published by PolyPhaser Corporation. The ground ring should be connected to the main building ground by the most direct route, buried as appropriate. Roof mounted structures should be connected to the main building ground by the most direct route using sacrificial lugs and copper cable or tape as appropriate. Tower guy wires should be directly bonded at their lowest point to a suitable ground electrode or connected to the site ground by the most direct route. A-2 Grounding of Feeders N2-4XE1 Installation and Operation Manual All antenna feeders should be bonded to the tower at the upper and lower ends and grounded at the point of entry into the building. Weatherproof grounding kits are available from antenna manufacturers. Note: Many of the cables used by Wireless, Inc. have braided rather than solid outer conductors; this type of grounding is not appropriate. In these cases we recommend the use of Wireless, Inc. approved lightning arrestors. For information on lightning arrestors, please contact Wireless, Inc.s Customer Service department. Grounding of Buildings A ground ring ideally should surround the building and be connected to individual grounds associated with feeder entry, antenna support structure, building lightning conductor, equip-

ment room, main AC supply and other facilities. Each connection should be made by the most direct route in order to minimize interaction between the different grounding functions. The ground ring should consist of copper cable or tape with electrodes 2- meters or greater in length, buried to a depth of 0.6-meters and at a distance from the building not to exceed 1-meter. Buildings may require lightning rods where they are not within the zone of another protected structure. Bibliograpy ITU - T K.40 ITU - T K.27 ITU - T K.35 ITU - T K.39 Protection against LEMP in telecommunications centres Bonding configurations and earthing inside a telecommuni-

cation building Bonding configurations and earthing at remote electronic sites Risk assessment of damages to telecommunications sites due to lightning discharges ITU - T Lightning Handbook The protection of telecommunication lines and equipment against lightning discharges IEEE Emerald Book - Powering and Grounding The Grounds for Lightning and EMP Protection, second edition Published by PolyPhaser Corporation A-3 N2-4XE1 Installation and Operation Manual A-4 Appendix B Installation Instructions N2-4XE1 Installation and Operation Manual Read the instructions completely before assembling or installing the antenna. This installation can be dangerous and requires qualified personnel familiar with microwave assembly and installation. Site Planning 1. For antenna mounting and planning dimensions, see Figure B.1 and Table B.1. 2. The antenna is normally assembled with an elevation adjustment range of +50 degrees to

-5 degrees. By inverting the mount, it can be assembled with a +5 degree to -50 degree range. In either configuration, the antenna centerline can be offset right or left, relative to the vertical mast pipe (See Figure B.2) by inverting the Horizontal Tube Assembly. Figure B.1 - Two Foot Diameter Antenna J H P B D C K A G Q WL035927 B-1 N2-4XE1 Installation and Operation Manual Table B.1 - Two Foot Diameter Antenna Dimensions noisnemiD noitpircseD annetnA)m6.0(.tf2 A B C D E F G H J K L N P Q htgneLtnuoM tnioPtoviP tesffOeniLretneC

)mm075("4.22

)mm501("2.4

)mm521("0.5 turtStnuoMlatnoziroH A/N turtStnuoMlacitreV.tP.tvP

)mm571("8.8 turtSediSdexiFlatnoziroH A/N enilretneCannetnA htgneLrotcelfeR htgneLduorhStrohS htgneLduorhSgnoL retemaiDannetnA

)mm543("6.31

)mm513("3.21

)mm023("5.21

)mm583("1.51

)mm016("0.42

)dradnatS(htgneLemodaR

)mm043("4.31 htpeDturtStnuoM A/N xetreVrotcelfeR retemaiDtsaM

)mm091("6.7

)mm511-06("5.4"4.2 egnaRelbatsujdAhtumizA 5 segnaRtnemtsujdAnoitavelE 5-/05+

829530LW B-2 N2-4XE1 Installation and Operation Manual Figure B.2 - Mount Configuration 3/8 (10mm) Round Head Screw Lockwasher and Nut (4) 2.4- 4.5

(60-115mm) Shear Stop Collar Elevation Plate WL035929 B-3 N2-4XE1 Installation and Operation Manual Unpacking and Preparation 1. Carefully unpack the reflector, mount, shroud (if any), radome (if any) and feed from the crate. For correct antenna performance, handle all components with care. Set aside the packaged feed and any shroud or radome. See Figures B.3 through B.6. Caution: The reflector spinning has been formed to a very close-toleranced parabolic shape. Careful handling and assembly is required to avoid denting or deforming the reflector, which would degrade the antenna's performance. 2. Inspect for any damaged parts. See Tables B.2a-B.2d for an inventory of the parts and hardware shipped with the antenna. Shroud Attachment Attach the shroud assembly that is provided with high-performance antennas to the reflector. The installation procedure is covered by another instruction sheet supplied with the shroud. Note: Some models have the shroud factory installed. Table B.2a - Contents List, Reflector Assembly rebmuNtraP noitpircseD 3-23832 A2-nepO'2ES.yssA.lfeR

.ytQ 1 kcehC 039530LW Table B.2b - Contents List, Feed Assembly rebmuNtraP noitpircseD

.ytQ 1-63752 305-61762 0715TDA 0500XWF 122-II 0600XUN 0500XWS pmalCgnitnuoMdeeF 058.5-052.5A/SdeeF 071SSD'04x8//7x61/3lytuBkcarTRR 560.x437.0W"4/1rehsaW snoitcurtsnInoitallatsnI tuNxeH rehsaWtilpS 4 1 1 4 1 4 4 139530LW B-4 N2-4XE1 Installation and Operation Manual Figure B.3 - Mounting Hardware Packed Feed Horn Assembly Mounting Hardware WL035932 Figure B.4 - Mounting Hardware Unpacked WL035933 B-5 N2-4XE1 Installation and Operation Manual Table B.2c - Contents List, Mount Assembly rebmuNtraP 105-57652 505-52752 2-61322 5-52542 0210GWF 1210GUN 0900GWS 905-52732 2-61322 8-52542 0210GWF 0210GUN 0900GWS 405-72752 3-58232 2-52542 noitpircseD ylbmessAepiPlatnoziroH ylbmessAgnipmalCtsaM vlaGdoRdedaerhT

"1flaHpmalCtsaM vlaGrehsaW vlaGrehsaW vlaGrehsaWtilpS yssAgnipmalCtsaM vlaGdoRdedaerhT flaHpmalCtsaM vlaGrehsaW tuNxeH vlaGrehsaWtilpS yssApotSraehS doRdedaerhT trohS-flaHpmalCZA 0310XUN tuNxeH 0900GWS 305-03752 6-11632 105-24832 1-66652 0800GOB 0210GWF 0410GWF 0210GUN 5910XUN 0900GWS 0010GWS vlaGrehsaWtilpS yssAdoRnoitavelE doRnoitavelE yssAtkrBdoRnoitavelE elgnAtroppuSnoitavelE vlaGtloBxeH vlaGrehsaW vlaGrehsaW vlaGtuNxeH SStuNxeH vlaGrehsaWtilpS vlaGrehsaWtilpS ytQ 1 1 2 1 2 6 4 1 2 1 2 6 4 1 2 2 6 4 1 1 1 1 1 1 1 1 4 1 1 439530LW B-6 N2-4XE1 Installation and Operation Manual Table B.2d- Contents List, Mount Assembly rebmuNtraP 105-33752 45-94701 2-16532 5000MDA 1290XOB 0210GWF 05000XWF 0210GUN 0600XUN 0900GNP 0500XWS 1-09562 1-19562 6811XOB 0310XUN 0800XWS 232-II noitpircseD tiKerawdraHtnuoM

.vlaGtloB-U recapS ebuT.zo1ezieS-itnA tloBxeH rehsaW rehsaW

.vlaGtuNxeH

.vlaGtuNxeH tunlaP

.vlaGrehsaWtilpS etalPnoitavelE etalPhtumizA wercSDHDNR tuNxeH rehsaWtilpS snoitcurtsnInoitallatsnI

.ytQ 1 2 2 1 6 4 21 4 6 4 6 1 1 4 4 4 1 539530LW B-7 N2-4XE1 Installation and Operation Manual Figure B.5 - Parabolic Reflector Parabolic Reflector WL035936 Figure B.6 - Unpacking the Radome WL035937 B-8 Mount Assembly and Attachment N2-4XE1 Installation and Operation Manual 1. The reflector should be placed face down, either on the shroud or blocked up on packing lumber. Locate the Top and Bottom markings stenciled onto the back of the reflector. 2. Loosely attach Top Support Angles to the Horizontal Tube Assembly as shown in Figure B.7 and B.8. 3. For desired mount configuration (refer to Figure B.2), attach the Vertical Tube Assembly to the Horizontal Tube Assembly as shown in Figure B.7 and B.8. 4. Verify proper assembly of the elevation rod hardware as shown in Figure B.9. Remove outer hardware and insert rod through elevation plate. Important: For elevation angles grater than 20, Beveled Washers, shown in Figure B.9, must be used. However, beveled washers may be used for elevation angles greater than 10. 5. Carefully place mount assembly onto antenna backring, taking care not to damage the reflector. Loosely fasten the Top Support Angles and the Elevation Support Angle to the antenna backring using 1/2 hardware as shown in Figure B.7. 6. Verify alignment of the Vertical Assembly with the vertical axis of the reflector and secure the Top Support Angles and the Elevation Support Angle to the ring. Figure B.7 - Antenna Mount Assembly 3/8 (10mm) Round Head Screw Lockwasher and Nut (4) 2.4- 4.5

(60-115mm) Shear Stop Collar Elevation Plate WL035938 B-9 N2-4XE1 Installation and Operation Manual Figure B.8 - Antenna Mount Assembly Figure B.9 - Elevation Rod Assembly Secure Antenna to Mast Pipe using large and small Mast Clamps Attach Shear Stop Collar on Mast Pipe so that it will be Under Azimuth Plate Position Elevation Plate on the Mast so elevation screw is horizontal when Antenna is aligned WL035939 WL035940 B-10 Feed Installation N2-4XE1 Installation and Operation Manual Following the instructions provided with the feed assembly, install the feed in the reflector. Refer to Figures B.10 through B.14. Figure B.10 - Feed Horn Installation Feed Support Clamp Reflector Hex Nut, Lockwasher, Flat Washer Graphite Grease 1/4-20 Hex Nut V Vertical V H H Horizontal WL035941 B-11 N2-4XE1 Installation and Operation Manual Figure B.11 - Feed Horn Polarization Markings Feed Horn Polarization Markings WL035942 Figure B.12 - Parabola Rear View Showing Polarization Reference Markers Horizontal Polarization Marking Vertical Polarization Marking WL035943 B-12 N2-4XE1 Installation and Operation Manual Figure B.13 - Feed Horn Installation WL035944 Figure B.14 - Feed Horn Installation for Vertical Polarized Operation WL035945 B-13 N2-4XE1 Installation and Operation Manual Radome Installation Molded Radomes (normally optional on standard antennas) should be installed following the instructions provided. Azimuth Adjustment Clamp/Shear Stop Installation 1. Verify proper assembly of the azimuth clamp/shear stop clamp as shown in Figure B.15 and B.16. Securely attach the shear stop clamp to the mast pipe as shown, orienting it as nearly as possible to the antenna boresight direction, and square to the mast axis. Note that the shear stop clamp used on the two foot antennas also provides the azimuth adjustment. 2. Refer to Figure B.1 for the position of the antenna centerline relative to the shear stop clamp. The clamp must be mounted to provide support during installation and azimuth adjustment. Figure B.15 - Azimuth Clamp/Shear Stop Assembly 3/8 (10mm) Round Head Screw Lockwasher and Nut (4) 2.4 - 4.5

(60-115mm) WL035946 Figure B.16 - Azimuth Adjustment Clamp Assembly WL035947 B-14 Antenna Hoisting and Installation N2-4XE1 Installation and Operation Manual 1. Attach a hoist strap around the vertical assembly or the horizontal assembly as shown in Figure B.17. Do not hoist by the elevation rod. Make sure that the vertical assembly is unobstructed where it will mount against the mast pipe. 2. Attach tag lines and carefully lift the antenna into position, resting the vertical assembly on the shear stop clamp. 3. Fasten the mount to the mast pipe with 1/2 U-bolts. The antenna must be free to rotate during azimuth adjustment, so tighten only enough to close the gap between the mast and vertical channel. Do not leave the antenna loose for any extended period of time, i.e. overnight. Figure B.17 - Hoisting the Antenna 5

(127mm) WL035948 B-15 N2-4XE1 Installation and Operation Manual General Antenna Alignment Procedures Normally the antenna is aligned by performing azimuth and elevation adjustments and elevation adjustments as necessary until the peak signal is obtained. It may be helpful to re-

peak one adjustment before finalizing or locking down the other. Warning: Damage to the antenna can occur if azimuth or elevation adjustments are attempted without loosening the proper connections as described in the following steps. Azimuth Adjustment 1. Be sure the mast pipe U-bolts are just loose enough to allow mount rotation while maintaining complete contact between the mount and the mast pipe. 2. Turn the long stainless steel azimuth screws against the mounting channel. By alternately turning one azimuth adjustment screw out and the other in, the antenna can be rotated to the desired azimuth angle. Approximately 1 turn changes the azimuth direction by 1. Avoid adjusting the antenna beyond the 5 provided by the azimuth clamp as this can damage the adjusting hardware. Fasten the antenna to the mast pipe and reposition the clamp if needed. Note: By securing the mount to the mast pipe and realigning the azimuth clamp with the antenna boresight, more reliable and precise azimuth adjustments can be achieved. After all adjustments are made, tighten both of the azimuth screws against the channel and secure with the lock nuts provided. 3. Tighten the mast pipe U-bolts while maintaining the peak signal by alternating from left to right in 1/4 turn intervals. Elevation Adjustment 1. Insure that both of the bolts connecting the mount to the Top Support Angles and the pivoting Elevation Angle (refer to Figures B.7 and B.9) are just loose enough to allow resisted rotation. 2. Back the outer nuts on the elevation rod away from the bottom mount plate to allow some fine adjustment range. 3. Turn the inside nut (with flat washer) on the elevation rod to adjust the elevation angle. Approximately 5 turns changes the elevation by 1. Remember, for elevation greater than 20, install the two beveled washers as shown in Figure B.9. 4. After all adjustments are made, lock the nut against the bottom mount plate. Tighten the angle pivot bolt and support bracket bolts. Important: Be sure to tighten all hardware after final adjustments and insure that split lockwashers, palnuts, or jam nuts are used where provided. B-16 Inspection and Maintenance N2-4XE1 Installation and Operation Manual 1. Before leaving the installation, check that all hardware on the mount, shroud, radome, and feed is tight and that nuts are locked in place. 2. Inspection of the antenna should be performed at lease once a year to check its condition and to insure safe operation and maintenance. Qualified personnel, knowledgeable and experienced in antenna installations, are required for this inspection. Supplemental Information Table B.3 is provided for installers unfamiliar with adequate nut tightening procedures for use on stainless steel bolts, U-bolts, galvanized bolts or any bolts without the ASTM-A325 marking on the head. Disregard these recommendations when specific tightening requirements are given. Note: It is not recommended to reuse a palnut that has already been fully tightened or deformed in any way. It should be replaced by a new palnut. Weather Proofing the Type N Female Connector on Feeds Remove the protective cover from the end of the feed and mate the connectors, screwing the male connector firmly onto the feed. Important: After connecting the coaxial cable, wrap the Type N connector with the gray butyl rubber, squeezing it firmly around all joints to make a continuous seal. Finish the weatherproofing by wrapping the butyl rubber with several layers of black PVC tape (not supplied). Table B.3 - Nut Tightening Procedures eziStloBlanimoN euqroTtuN euqroTtunkcoLtunlaP

"4/1

"61/5

"8/3

"61/7

"2/1

"8/5

"4/3

"8/7

"1

.bl/.ni05

.bl/.ni201

.bl/.tf51

.bl/.tf42

.bl/.tf73

.bl/.tf47

.bl/.tf571

.bl/.tf212

.bl/.tf813 B-17

.bl/.ni04

.bl/.ni06

.bl/.ni58

.bl/.tf51

.bl/.tf61

.bl/.tf82

.bl/.tf44

.bl/.tf15

.bl/.tf95 059530LW N2-4XE1 Installation and Operation Manual B-18 Appendix C Adjustable Panel Antenna Mount N2-4XE1 Installation and Operation Manual Assemble the panel mount according to Figure C.1. Orient Antenna using instructions supplied with the antenna. Antenna models used with this mount may be circular, square or diamond shaped. To change the offset of the antenna, unbolt the mount from the antenna, invert the mount and reattach to the antenna. Figure C.1 - Antenna Mount Top View Optional Mast Clamp Kit for 1.9 (48mm) DIA thru 4.5 (114mm) DIA Masts 2 3/8 (60mm) DIA Mast

(2) 1/4 U-Bolt w/

Washer, Lockwashers and Nuts Azimuth Adjustment Slots Side View Rear View Offset Left Rear View Offset Right WL035951 Elevation Adjustment Slots C-1 N2-4XE1 Installation and Operation Manual Loosen the azimuth or elevation locking hardware while maintaining sufficient friction to prevent unwanted slippage. See Figure C.2. Insert flat blade screw driver into slot B and pry in direction of the arrow or into slot A and pry in opposite direction, as shown in Figure C.2. Stop prying approximately as new overlapping slot in bottom plate becomes sufficiently visible when viewed through slot A. Figure C.2 - Azimuth and Elevation Planning Top View A B Top View A B A B A B Sectional View Sectional View WL035952 C-2 N2-4XE1 Installation and Operation Manual Insert Screw Driver into slot A and pry in direction of the arrow, as shown in Figure C.3. Stop prying approximately as new slot in bottom plate becomes sufficiently visible when viewed through slot B. Continue alternating slots and prying in either direction until desired alignment is obtained. Lock down hardware securely before leaving the site. Figure C.3 - Azimuth and Elevation Planning Top View A B Top View A B A B A B Sectional View Sectional View WL035953 C-3 N2-4XE1 Installation and Operation Manual Attach the antenna to the mount as shown in Figure C.4. For antenna polarization, assemble the antenna to the mount using four sets of nuts and washers after desired polarization is selected. In horizontal polarization the arrow sticker should be pointed in a horizontal direction. Likewise, in vertical polarization the arrow sticker should be pointed in a vertical position. Important: After cable connection is completed, wrap connection with Butyl or other waterproof tape, supplied by the customer. Each panel antenna has four factory sealed drain holes located on the back of the antenna. After orienting the antenna to its proper polarization, the lower most sealed drain hole(s) must be punctured with a pointed tool. See Figure C.4. Caution: Do not allow the tool to protrude into the drain hole more than 1/4 (7mm) or damage to the antenna may result. Figure C.4 - Flat Panel Antenna Antenna Polarization using Nuts and Washers Polarization Arrow Drain Holes WL035954 C-4 N2-4XE1 Installation and Operation Manual Aim the antenna according to Figure C.5. Orient the antenna using instructions supplied with the antenna. Antenna models used with this mount may be circular, square or diamond shaped. To change the offset, unbolt the mount from the antenna, then invert the mount and reattach in the antenna. Figure C.5 - Adjustable Panel Antenna Mount Side View 1/4 Carriage Bolts w/ Washers, Lockwashers and Nuts (2) Elevation Adjustment Clamp Kit for 1.9 (48mm) DIA Thru 4.5 (114mm) DIA Masts Rear View Right Offset Rear View Left Offset WL035955 C-5 N2-4XE1 Installation and Operation Manual C-6

2.2.5 Antennas

. Antenna Type 2' dish plane polarized, 28.5 dbi 2' dish dual polarized, 28.5 dBi

*4 ' diameter dish, plane polarized, 33.5 dBi

*4' diameter dish, dual polarized, 33.5 dBi 14" flat panel . 23 dBi 2 ft dish, 26 dBi 6" ft flat panel, 18 dBi Manufacturer and Part Number Gabriel SSP2-52ARI Gabriel SSD2-52ARI Gabriel SSP4-52A Gabriel SSD4-52A MTI Technology MT30102 Radiowaves SP1-5.2NL Gabiriel DFPD 5-52 The 4-foot dish antennas are for use outside the USA only, and are not FCC compliant. Maximum Power, dBm, into antenna 18 dBi 23 dBi 26 dBi Mti Panel Gabriel panel Radiowaves dish 28.5dBi Gabriel dish fo MHz 5250-

5350 5807.3 5733.6 all others Max P, dBm Max P, dBm Max P, dBm Max P, dBm 4 4**

12 12 8 12 12 12 0 4**

12 12 not used 0**

12 12

** limited by EIRP restrictions in 15.407(b)2 2.2.6 Diagnostics

vii N2-4XE1 Installation and Operation Manual Microwave Antenna Radiation Warning Designed for point-to-point operation,an N2-4XE1 microwave radio system will use directional antennas to transmit and receive microwave signals.These directional antennas are usually circular or rectangular n shape,are generally located outdoors,and are usually mounted on a tower or mast. Referencing OET Bulletin 65 (Edition 97-01,August 1997)from the Federal Communication Commission s Office of Engineering &Technology,limits for maximum permissible exposure

(MPE)to microwave signals have been adopted by the FCC for both Occupational/Controlled environments and General Population/Uncontrolled environments. These limits are 5.0 mW/

cm2 and 1.0 mW/cm2 respectively. The closer you are to the front center-point of a microwave antenna,the greater the power density of its transmitted microwave signal.Unless you are very close,however,microwave exposure levels will fall far below the MPE limits.To determine how close to a microwave antenna you can be and still remain below the MPE limits noted above,worst case predictions of the field strength and power density levels in the vicinity of an N2-4XE1 microwave antenna can be made from the following calculations.The equation is generally accurate in the far-field of an antenna,and will over-predict power density n the near-field (i.e.close to the antenna). S =PG/4 R2 where:

S =power density (in mW/cm2) P =power input to the antenna (mW) G =power gain of the antenna in the direction of nterest relative to an isotropic radiator R =distance to the center of radiation of the antenna (cm) Note that G,the power gain factor,is usually expressed in logarithmic terms (i.e.,dB),and must be converted using the following equation:

G =10dB/10 In order to satisfy FCC RF ezposure requirements, the antennas used with this product must be installed in such a way as to insure a minum separation distance between the antennas and all persons of the amounts shown in the table below:

RF Exposure Safety Information Max RF Power TX Antenna P, dBm G, dBi Uncontrolled Environment Controlled MPE 1 mW/cm2 MPE 1 mW/cm2 MPE 5 mW/cm2 P, dBm G, dBi Safe Distance, cm Safe Distance, cm 12.0 12.0 12.0 12.0 18.0 23.0 26.0 28.5 20*

20*

22.4 29.9 20*

20*

20*

20*

* For fixed and mobile antenna installations, FCC requires a minimum separation distance of 20 cm, regardless of whether calculations would indicate a lesser distance. Wireless,Inc.fully supports the FCC s adopted MPE limits,and recommends that personnel maintain appropriate distances from the front of all directional microwave antennas.Should you have questions about N2-4XE1 microwave signal radiation,please contact the Wireless,Inc. Customer Service Department.