COMBA RD-1832 Technical Document

EQUIPMENT MANUAL FOR RD-1832
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ENU Status : 1-1-0
The information contained herein is the
responsibility of and is approved by the
following, to whom all enquiries should
be directed in the first instance:
International Documentation Centre
Comba Telecom
RD-1832
1800 MHZGSM REPEATER
EQUIPMENT MANUAL
This is an unpublished work the copyright in which vests in Comba International ("Comba"). All rights reserved.
The information contained herein is confidential and the property of Comba and is supplied without liability for errors or omissions.
No part may be reproduced, disclosed or used except as authorised by contract or other written permission. The copyright and the
foregoing restriction on reproduction and use extend to all media in which the information may be embodied.

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0.2 CONTENTS
Section Page
0.2 CONTENTS...........................................................................................................................................2
0.3 INDEX TO FIGURES AND TABLES .................................................................................................4
0.4 HISTORY...............................................................................................................................................5
0.5 ISSUE CONTROL................................................................................................................................6
0.6 REFERENCES .....................................................................................................................................7
0.7 GLOSSARY OF TERMS.....................................................................................................................8
0.8 SAFETY NOTICES AND ADMONISHMENTS ................................................................................9
0.9 SERVICING POLICY AND RETURN OF EQUIPMENT ..............................................................10
0.10 READERS COMMENTS...................................................................................................................11
1RD-1832 REPEATER INTRODUCTION ........................................................................................12
2EQUIPMENT DESCRIPTION...........................................................................................................13
2.1 RD-1832 FUNCTIONAL BLOCK DIAGRAM..................................................................................13
2.2 EQUIPMENT LAYOUT......................................................................................................................14
2.3 MANUFACTURING ENTITIES.........................................................................................................15
2.4 KIT OF PARTS ...................................................................................................................................15
2.5 TECHNICAL SPECIFICATIONS......................................................................................................16
2.5.1 ELECTRICAL AND POWER ............................................................................................................16
2.5.2 MECHANICAL, ENVIRONMENTAL................................................................................................17
2.5.3 OPERATION & MAINTENANCE .....................................................................................................17
3INSTALLATION ..................................................................................................................................18
3.1 WARNINGS AND ALERTS...............................................................................................................18
3.2 SITE PLANNING CONSIDERATIONS ...........................................................................................19
3.3 INSTALLATION PROCEDURES .....................................................................................................20
3.3.1 GOODS INWARDS INSPECTION ..................................................................................................20
3.3.2 TOOLS.................................................................................................................................................20
3.3.3 PREPARATION..................................................................................................................................20
3.3.4 MOUNTING RACK DIAGRAM .........................................................................................................20
3.3.5 WALL MOUNTING DETAILS ...........................................................................................................21
3.3.6 POLE MOUNTING DETAILS ...........................................................................................................22
3.3.7 DRIP-LOOP.........................................................................................................................................22
3.3.8 EQUIPMENT CONNECTIONS ........................................................................................................23
4COMMISSIONING .............................................................................................................................24
4.1 MCU LED INDICATORS...................................................................................................................24
4.2 EQUIPMENT POWER-UP................................................................................................................24
4.3 REPEATER PC SOFTWARE (OMT) ..............................................................................................25
4.4 NON-VOLATILE MEMORY ..............................................................................................................26
4.5 PREPARATION FOR REMOTE CONNECTION OF OMT USING WIRELESS MODEM ......27
4.6 PHYSICAL CONNECTION OF OMT TO EQUIPMENT ...............................................................27
4.7 LOCAL COMMISSIONING ...............................................................................................................28
4.7.1 USING OMT SOFTWARE ................................................................................................................28
4.7.2 DESCRIPTION OF PARAMETERS ................................................................................................31
4.8 COMMISSIONING PROCEDURES ................................................................................................36
5OPERATION .......................................................................................................................................37
6MAINTENANCE..................................................................................................................................38
7APPENDICES.....................................................................................................................................39
7.1 APPENDIX A: TOOLS.......................................................................................................................39

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7.2 APPENDIX B: OMT INSTALLATION AND UN-INSTALLATION ................................................40
7.2.1 ENVIRONMENT FOR OMT OPERATION .....................................................................................40
7.2.2 INSTALLING OMT EXPLORER.......................................................................................................41
7.2.3 INSTALLING RD-1832 COMPONENT ...........................................................................................43
7.2.4 RD-1832 COMPONENT UN-INSTALLATION ...............................................................................44
7.2.5 OMT EXPLORER UN-INSTALLATION ..........................................................................................44
7.3 APPENDIX C: OMT EXPLORER V2.10 INTRODUCTION..........................................................45
7.3.1 PULL DOWN MENU..........................................................................................................................46
7.3.2 TOOLBAR ...........................................................................................................................................46
7.4 APPENDIX D: CHANNEL NUMBER AND FREQUENCY TABLE..............................................47
7.5 APPENDIX E: RMA (RETURN MATERIAL AUTHORIZATION) FORM....................................50

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0.3 INDEX TO FIGURES AND TABLES
Figure 1: Front, Side and Bottom Views of Equipment Enclosure............................................................... 12
Figure 2: RD-1832 Functional Block Diagram ............................................................................................. 13
Figure 3: Layout View of the Equipped Product .......................................................................................... 14
Figure 4: Mounting Rack Dimensions.......................................................................................................... 20
Figure 5: Wall Mounting Overview ............................................................................................................... 21
Figure 6: Pole Mounting Overview............................................................................................................... 22
Figure 7: Equipment Connections................................................................................................................ 23
Figure 8: Location of MCU and LED ............................................................................................................ 24
Figure 9: Wireless Modem ........................................................................................................................... 27
Figure 10: OMT explorer V2.10 window ...................................................................................................... 28
Figure 11: OMT Screenshot - Connection to the Equipment....................................................................... 29
Figure 12: OMT Screenshot - Communication Setup.................................................................................. 29
Figure 13: OMT Main Window - Online Ok.................................................................................................. 30
Figure 14: OMT Screenshot- Network Parameter Window ......................................................................... 31
Figure 15: RF Parameters Window.............................................................................................................. 32
Figure 16: Alarm and Power Window .......................................................................................................... 32
Figure 17: Alarm List .................................................................................................................................... 34
Figure 18: OMT software installation window .............................................................................................. 41
Figure 19: Components selective window ................................................................................................... 41
Figure 20: Installation of OMT explorer completed...................................................................................... 42
Figure 21: Installation of RD-1832 component completed ..........................................................................43
Figure 22: RD-1832 component uninstallation - confirmation ..................................................................... 44
Figure 23: OMT Explorer uninstallation - acknowledgement....................................................................... 44
Table 1: RD-1832 Manufacturing Entities.................................................................................................... 15
Table 2: RD-1832 KOP ................................................................................................................................ 15
Table 3: Electrical Specifications ................................................................................................................. 16
Table 4: Mechanical and Environmental Specifications .............................................................................. 17
Table 5: Management of RD-1832............................................................................................................... 17
Table 6: MCU LED ....................................................................................................................................... 24
Table 7: Management - Network Parameters............................................................................................ 31
Table 8: Management - RF Parameters ...................................................................................................... 33
Table 9: Management - Alarm list ................................................................................................................ 34
Table 10: Commissioning Procedures......................................................................................................... 36
Table 11: Alarms Diagnosis ......................................................................................................................... 37

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0.4 HISTORY
Change No. Issue/ENU Details Of Change
1 1-0-0 Created for CE certification in Sep. 2005.
2 1-1-0 Technical spec updated on 09 May 2006; OMT software descriptions
revised.

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0.5 ISSUE CONTROL
Date 26
Sep.
05
09
May
06
Section
All All2&4

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0.6 REFERENCES
0.6.1 RD-1832 (2W) Datasheet
Issue: 2-2-1
Datasheet released on 28 Mar 2006.

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0.7 GLOSSARY OF TERMS
Abbreviation Definition
ALC Automatic Level Control
ATT Attenuation
BS Base Station
BTS Base Transceiver Station
dB Decibel
dBm Decibels relative to 1 milliwatt
DL Downlink
DT Donor Terminal
DPX Duplexer
EEPROM Electrically Erasable Programmable Read Only Memory
FS Frequency Selector
GSM Global Standard for Mobile Communication
Hz Hertz
ID Identification
LNA Low Noise Amplifier
MCU Main Control Unit
MHz Megahertz
MT Mobile Terminal
MTBF Mean Time Between Failures
NC Normally Closed
NF Noise Figure
NO Normally Open
OMC Operation & Maintenance Center
OMT Operation and Maintenance Terminal
PLL Phase Locked Loop
PSU Power Supply Unit
RF Radio Frequency
SIM Subscriber Identification Module
SMA Sub-Miniature A Connector
SMS Short Message System
UL Uplink
VAC Volts Alternating Current
VSWR Voltage Standing Wave Ratio

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0.8 SAFETY NOTICES AND ADMONISHMENTS
This document contains safety notices in accordance with appropriate standards. In the interests of
conformity with the territory standards for the country concerned, the equivalent territorial admonishments
are also shown.
Any installation, adjustment, maintenance and repair of the equipment must only be carried out by trained,
authorised personnel. At all times, personnel must comply with any safety notices and instructions.
Specific hazards are indicated by symbol labels on or near the affected parts of the equipment. The labels
conform to international standards, are triangular in shape, and are coloured black on a yellow background.
An informative text label may accompany the symbol label.
Hazard labelling is supplemented by safety notices in the appropriate equipment manual. These notices
contain additional information on the nature of the hazard and may also specify precautions.
Warning Notices:
These draw the attention of personnel to hazards which may cause death or injury to the operator or others.
Examples of use are cases of high voltage, laser emission, toxic substances, point of high temperature, etc.
Alert Notices:
These draw the attention of personnel to hazards which may cause damage to the equipment. An example
of use is the case of static electricity hazard.
Caution notices may also be used in the handbook to draw attention to matters that do not constitute a risk of
causing damage to the equipment but where there is a possibility of seriously impairing its performance, e.g.
by mishandling or gross maladjustment. Warnings and Cautions within the main text do not incorporate
labels and may be in shortened form.

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0.9 SERVICING POLICY AND RETURN OF EQUIPMENT
The repair of individual units and modules of this equipment is not considered practicable without factory
facilities. It is, therefore, the policy of Comba whereby faulty units or modules are returned to the local agent
for repair.
To enable an efficient and prompt after sales service for the diagnosis, repair and return of any faulty
equipment, please comply with the following requirements.
Items to be sent for repair should be packaged so as to provide both electrostatic and physical protection
and a Repair Material Authorization (a sample of this is in the appendix) should be completed giving the
required information.
This request must be included with the item for repair. Items for repair should be sent to the nearest Comba
office:
COMBA TELECOM SYSTEMS, LTD.
Hong Kong Office
Address: Room 1503-10 Delta House, 3 On Yiu Street, Shatin, Hong Kong.
Tel: + 852 2636 6861
Fax: + 852 2637 0966
Email: [email protected]
Singapore office
Address: 865 Mountbatten Road #05-43, Katong Shopping Centre, Singapore 449408
Tel: + 65 6345 4908
Fax: + 65 6345 1186
Email: [email protected]
Sweden Office
Address: Comba Telecom Systems AB, Gustavslundsvagen 147, S- 167 51 Bromma,
Stockholm, Sweden
Tel: [phone]
Fax: [phone]
Email: [email protected]
China R&D and Manufacturing Base
Address: No.6, Jinbi Road, Guangzhou Economic and Technological Development District,
Guangzhou, China.
Tel: + 86 20 8222 5788
Fax: + 86 20 8222 6121
Email: [email protected]

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0.10 READERS COMMENTS
Whilst every endeavour is made to ensure the accuracy of this and all Comba documents, there is always
the possibility that an inaccuracy or omission could occur.
In order that any amendment/remedial action can be carried out promptly, we would appreciate your
co–operation in filling out and returning a photocopy of this customer reply sheet as soon as possible.
Customer Information:
Name
Title
Company
Date
Address
Telephone Number
Customer Comments:
Equipment title
ENU 1-1-0
Page number
Paragraph number
Line number
Figure number
Details of inaccuracies
Other comments
End of section

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1 RD-1832 REPEATER INTRODUCTION
The RD-1832 split band selective repeater is designed for both indoor and outdoor operation in the
GSM1800 system. A band-specific linear amplifier and filter effectively amplifies the desired BTS carriers
and provides superior out-of-band rejection. Typical units incorporate up to 15MHz adjustable bandwidth
with frequencies programmed to specific requirements within the whole of the GSM1800 band. Split band
selectivity is implemented with two band selective filters per UL/DL. Remote configuration and surveillance
is possible through Comba’s remote control and monitoring system, via laptop or wireless modem to the
OMC. Internal Li-ion battery backup ensures alarm signals are sent out while power is down. The RD-1832
comes in a sealed, cast aluminum enclosure, suitable for all weather conditions.
Main features of RD-1832:
zBand selectivity from two band-selective modules with user-defined bandwidth.
zOutput power can be easily adjusted via repeater PC software (hereinafter called OMT) software to
satisfy the requirement of network optimization.
zIntegrated wireless modem for remote configuration, monitor and control.
zAutomatic control for self-oscillation caused by a low isolation between DT and MT antennas.
zInternal backup battery keeps the alarm unit running for up to three hours after power loss.
zOptional OMC is available for remote operation and maintenance of repeaters.
zDesigned for all weather outdoor installation – waterproof, damp-proof and omni-sealed (IP65).
450
600
195
Figure 1: Front, Side and Bottom Views of Equipment Enclosure
End of section

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2 EQUIPMENT DESCRIPTION
2.1 RD-1832 FUNCTIONAL BLOCK DIAGRAM
Donor
Ant
Power
Supply
Alarm
Indicator Main Control Unit
External
Power
OMT
Li-ion
BATT
Modem
DT
Mobile
Ant
Mobile
MT
OMT
Computer with
Data card
Wireless
Modem
OMC
M-ATT
LNA1
Downlink
PA1
ALC
DLBand Selective
Module
DLBand Selective
Module
ALC
DLBand Selective
Module
ALC
DLBand Selective
Module
M-ATT
LNA2
Uplink
PA2
ALC
DLBand Selective
Module
DLBand Selective
Module
ALC
DLBand Selective
Module
DLBand Selective
Module
Figure 2: RD-1832 Functional Block Diagram

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2.2 EQUIPMENT LAYOUT
Wireless Modem
Cavity
Filter
LNA1
Lock
GND
PSU
Surge
Protector
MCU
Distribution Board
Li-ion
Battery
Micro-switch
GND
LNA2
DL PA
DT MT
RS-232
DPX1
DPX2
UL FS UL PA
DL FS
Figure 3: Layout View of the Equipped Product

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2.3 MANUFACTURING ENTITIES
RD-1832 is composed of modules with the following identifiers.
Identification Code Description
FB-181DBU Uplink frequency selector
FB-181DBD Downlink frequency selector
PA-4250DSS02U Uplink power amplifier
PA-4250DSS02D Downlink power amplifier
FC-8C174775SB309 Filter
LA-1040DSSD Low noise amplifier
FD-U1747.5D1842.5B75SS04 Duplexer
R-9110AC1-M1 Main control unit
R-1810DB-BB Interface board
WM02-G900 Wireless modem
PC222435A-2 (26V) Power supply unit
R-1810H-3101TM Enclosure
3.6V/1300mAh ×6 Li-ion battery assembly
V20-C/2 Surge protector
Table 1: RD-1832 Manufacturing Entities
2.4 KIT OF PARTS
The following table shows the kit of parts is supplied with the equipment.
Product identifier Description Qty.
R-9122C8-5140/1 Mounting rack (kit) for pole or wall mounting 1
M10×110 Masonry bolt for wall mounting 8
M10×85×110 U bolt for pole mounting 2
5.5 Allen key for socket screws 1
R-9122C/R-9122AC Field commission cable for OMT 1
Embossed “9122” Key for enclosure door lock, type “9122” 2
6.3A Delay Fuse (two provided) for PSU 2
RD-1832 QE 1-1-0 This equipment manual 1
V2.10 OMT Explorer software 1
V1.00 (component) OMT software 1
Table 2: RD-1832 KOP

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2.5 TECHNICAL SPECIFICATIONS
2.5.1 ELECTRICAL AND POWER
Frequency Range, UL MHz 1710 – 1785
Frequency Range, DL MHz 1805 – 1880
Max. Filter Bandwidth (FBW) MHz 15
Operating bandwidth (BW) for each sub-bands MHz 2 – FBW
(Adjustable in Band)
Maximal System Gain Adjustable Range (1dB Step) dB 53 – 83 ±3
Total Output Power dBm 33 ± 1
Pass Band Ripple @ FBW, p-p dB ≤5
System Noise Figure @ Max. System Gain dB ≤8
Group Delay – [µsec] ≤6
Out-of-band Gain
- at Offset ≥400KHz
- at Offset ≥600KHz
- at Offset ≥1MHz
- at Offset ≥5MHz
dB
< 50
< 40
< 35
< 25
Spurious
- 9kHz to 1GHz
- 1GHz to 12.75GHz
dBm
≤-36
≤-30
Intermodulation @ 2x24dBm dBm ≤-30
Absolute Max. RF Input Power dBm +10
VSWR ≤1.5
Impedance Ω50
Power Supply VAC 155-285 / 45-55Hz
Power Consumption (approx.) W 120
MCU Battery Backup Time (approx.) hr 3
Power Up Waiting Time (approx.) sec 60
Measurements taken at room temperature.
Table 3: Electrical Specifications

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2.5.2 MECHANICAL, ENVIRONMENTAL
Dimensions, H x W x D mm 600 x 450 x 195
Weight (approx.) kg 37
Enclosure Material Aluminum
Enclosure Color Grey
Connector Type N-Female
Operating Temperature °C -40 +55
Operating Humidity % ≤95
Cooling Convection
MTBF hrs > 50,000
Environmental Class IP65
Table 4: Mechanical and Environmental Specifications
2.5.3 OPERATION & MAINTENANCE
Local Monitoring Feature PC via RS232
Remote Data Transfer Via integrated wireless modem (data or SMS mode),
OMC(Optional)
Local and Remote Controlled Parameters Channel No. Range, ATT, Soft ON/OFF, Oscillation
Elimination ON/OFF, Over-Temp Threshold, DL Output
Power Threshold, Alarm Report Enable
Local and Remote Monitored Parameters Alarms (LNA, PA, PLL unlock, Power Down, PSU Fault,
Door Open, Self oscillation, Over Temp, VSWR, DL
Output Power Low/Overload), UL/DL Output Power, DL
Input Power
Table 5: Management of RD-1832
End of section

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3 INSTALLATION
3.1 WARNINGS AND ALERTS
Radio Frequency energies
There may be situations, particularly the workplace environments adjacent to high-powered RF sources,
where recommended limits for safe exposure of human beings to RF energy could be exceeded. In such
cases, restrictive measures or actions may be necessary to ensure the safe use of RF energy.
Assume that other RF energies exist in the vicinity, always maintain a minimum distance of 1m from the
human beings (assumption 935 MHz at 40W emitted power, source IEEE)
High voltage
The equipment has been designed and constructed as to prevent as far as reasonably practicable danger.
Any activity, such as installation, operation and maintenance, on or near the equipment must be as far as
reasonably free from danger.
Where there is a risk of damage to electrical systems due to adverse weather, extreme temperatures, wet,
corrosive or dirty conditions, flammable or explosive atmosphere, then the system must be suitably installed
to avoid such a danger.
To reduce the risk of damage to the equipment and to the customer, shut down the equipment and take
action to isolate mains supply when performing any intrusive actions.
Protective Earthing
Equipment must be well grounded for the purpose of protecting individuals from electrical risk.
Handling Precautions
Precautions should be taken in equipment handling activities including lifting, lowering, pushing, pulling,
carrying, moving or holding, or the activities to restrain an object, animal or a person, or the activities when
extra efforts are needed such as pulling a lever, or operating power tools.
ESD
Take necessary precautions when handling ESD-sensitive devices. Assume that all solid-state electronic
devices are ESD-sensitive. Do use a grounded wriststrap or the like while working with ESD-sensitive
devices. Transport, store, and handle ESD-sensitive devices in static-safe environments.

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3.2 SITE PLANNING CONSIDERATIONS
Site considerations
The repeater is designed to be waterproof, rainproof, and snowproof. Temporary protection should be taken
when the equipment enclosure is opened for installation or maintenance in an outdoor environment. The
equipment must not be opened for installation or maintenance in bad weather (e.g. gale, storm rainfall,
extreme temperatures and high humidity)
Installation location
Mounting surface shall be suitable to support weight of the equipment: for RD-1832, this is about 37 kg (82
lb.). For wall or pole mounting, make sure to leave ample working space. The recommended space is:
800mm×800mm×800mm.
Environmental
Humidity has an effect on the reliability of the equipment. It is recommended to install the equipment in
location having stable temperature and un-restricted air-flow.
RD-1832 equipment has been designed to operate in the ambient air temperature range of -40°C to +55°C
when the relative humidity is ≤95%. Should the direct day light temperature exceeds 40°C (104°F), then
barrier device should be installed in to protect the equipment to limit sunlight exposure.
Powering
The power supply unit (PSU) provides power to all modules within the enclosure. The PSU accepts
155-285VAC/45-55Hz. It is recommended that the PSU operate on a dedicated AC circuit breaker or fused
circuit.
In order to avoid electromagnetic interference, select the RD-1832 mounting location to minimize
interference from electromagnetic sources such as high powered equipment.
Grounding requirement
Verify the equipment has been well grounded, this includes antennas and all cables connected. Ensure
lightning protection for the antennas is properly grounded.
Cable routing
Four cables entries to the equipment: Two co-axial (connection for MT and DT), one 220VAC mains-power
cable and 1x RS-232 commission cable during commissioning with the door open.
Manual handling
During transportation and installation, take necessary handling precautions to avoid potential physical injury
to the installation personnel or damages to the equipment.
Donor Antenna, Repeater Gain and Service Antenna
Donor antenna should be narrow beamwidth positioned with line of sight to donor BTS site such that the
repeater can deliver maximum output power.
e.g., Repeater Received Donor Signal + Repeater Gain = Repeater Maximum Output Power
Whereas for a typical balanced system, the repeater UL gain should be set equal to the DL gain.
Service antenna should be selected based on the type of service area, e.g., indoor antenna for indoor
application, panel antenna for outdoor application.

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3.3 INSTALLATION PROCEDURES
3.3.1 GOODS INWARDS INSPECTION
zVerify the number of packages received against the packing list.
zCheck all packages for external damage; report any external damage to the shipping carrier. If there is
damage, a shipping agent should be present before unpacking and inspecting the contents because
damage caused during transit is the responsibility of the agent.
zOpen and check each package against the packing list. If any items are missing, contact Comba.
zDo not remove items from antistatic packing until installation. If damage is discovered at the time of
installation, contact the shipping agent.
3.3.2 TOOLS
See appendix A for a full list of the recommended tools required for new installation and routine
maintenance.
3.3.3 PREPARATION
Repeater:
zMounting surface or pole capable of support equipment weight: < 37 kg (82 lb.)
zPower outlet within 2m / 6.5 ft.
zTerminate unused antenna ports with a 50 ohm terminator.
zEarthing point/Safety ground within 2m / 6.5 ft.
Antenna:
zAntenna installation is covered by their respective manuals. Take normal precautions when preparing
and handling feeder cables to ensure they are not damaged.
3.3.4 MOUNTING RACK DIAGRAM
The following figure shows the dimension of mounting rack, which is used for mounting the equipment to
either a wall or on a pole.
400
200
85
14
465
Figure 4: Mounting Rack Dimensions