COMBA RD-8132 User manual

INSTALLATION GUIDE FOR RD-8132
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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-8132
GSM850 SPLIT BAND SELECTIVE
REPEATER
INSTALLATION GUIDE
This is an unpublished work the copyright in which vests in Comba International ("Comba").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-8132 REPEATER INTRODUCTION ...........................................................................................12
2EQUIPMENT DESCRIPTION..............................................................................................................13
2.1 RD-8132 FUNCTIONAL BLOCK DIAGRAM.....................................................................................13
2.2 EQUIPMENT LAYOUT.........................................................................................................................14
2.3 KIT OF PARTS (KOP) ..........................................................................................................................16
3INSTALLATION .....................................................................................................................................17
3.1 WARNINGS AND ALERTS..................................................................................................................17
3.2 SITE PLANNING CONSIDERATIONS ..............................................................................................18
3.2.1 REPEATER INSTALLATION CHECKLIST .......................................................................................19
3.2.2 ANTENNA INSTALLATION CONSIDERATION...............................................................................19
3.3 INSTALLATION PROCEDURES ........................................................................................................19
3.3.1 GOODS INWARDS INSPECTION .....................................................................................................19
3.3.2 TOOLS....................................................................................................................................................20
3.3.3 PREPARATION.....................................................................................................................................20
3.3.4 MOUNTING RACK DIMENSION ........................................................................................................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 ................................................................................................................................25
4.1 MCU LED INDICATORS......................................................................................................................25
4.2 EQUIPMENT POWER-UP...................................................................................................................25
4.3 OMT.........................................................................................................................................................26
4.3.1 OMT SOFTWARE INSTALLATION....................................................................................................26
4.3.2 OMT SOFTWARE VERSION ..............................................................................................................27
4.3.3 NON-VOLATILE MEMORY .................................................................................................................27
4.4 PREPARATION FOR REMOTE CONNECTION OF OMT USING WIRELESS MODEM .........27
4.5 PHYSICAL CONNECTION OF OMT TO EQUIPMENT ..................................................................28
4.6 CONNECTION TO OMT ......................................................................................................................28
4.7 OPERATION & MAINTENANCE ........................................................................................................28
4.8 DESCRIPTIONS OF PARAMETERS.................................................................................................29
4.8.1 COMMON INFORMATION..................................................................................................................29
4.8.2 RF INFORMATION ...............................................................................................................................30
4.8.3 ALARM INFORMATION.......................................................................................................................33
4.8.4 PROPERTIES INFORMATION...........................................................................................................35
4.9 COMMISSIONING PROCEDURES ...................................................................................................37
5OPERATION ..........................................................................................................................................38
6MAINTENANCE.....................................................................................................................................39

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7APPENDICES........................................................................................................................................40
7.1 APPENDIX A: TOOLS..........................................................................................................................40
7.2 APPENDIX B: CHANNEL NUMBER AND FREQUENCY TABLE.................................................41
7.3 APPENDIX C: RMA (RETURN MATERIAL AUTHORIZATION) FORM.......................................43

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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-8132 functional block diagram ............................................................................................... 13
Figure 3: Layout of the RD-8132.................................................................................................................. 14
Figure 4: Mounting rack dimension.............................................................................................................. 20
Figure 5: Wall mounting overview................................................................................................................ 21
Figure 6: Pole mounting overview................................................................................................................ 22
Figure 7: Equipment connections ................................................................................................................ 23
Figure 8: Pins allocation for 7-pin EXT_ALM connector.............................................................................. 24
Figure 9: Location of MCU and LEDs .......................................................................................................... 25
Figure 10: OMT main screen ....................................................................................................................... 26
Figure 11: Wireless modem ......................................................................................................................... 27
Figure 12: System information window........................................................................................................ 29
Figure 13: RF information – alarm threshold widow .................................................................................... 31
Figure 14: Switch configuration window ...................................................................................................... 31
Figure 15: Master alarm window.................................................................................................................. 33
Figure 16: Channel alarm ............................................................................................................................ 34
Figure 17: Equipment ID .............................................................................................................................. 35
Figure 18: Firmware information .................................................................................................................. 35
Figure 19: Communication configuration ..................................................................................................... 36
Table 1: RD-8132 KOP ................................................................................................................................ 16
Table 2: Repeater installation checklist ....................................................................................................... 19
Table 3: Antenna installation checklist......................................................................................................... 19
Table 4: External alarm signal definition...................................................................................................... 24
Table 5: Voltage applied to EXT Alarm pin.................................................................................................. 24
Table 6: MCU LEDs ..................................................................................................................................... 25
Table 7: Management of the RD-8132 ........................................................................................................ 28
Table 8: RD-8132 RF parameters description ............................................................................................. 30
Table 9: Management – RF parameters...................................................................................................... 32
Table 10: Alarm list ...................................................................................................................................... 34
Table 11: Commissioning procedures ......................................................................................................... 37
Table 12: Alarms diagnosis.......................................................................................................................... 38

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0.4 HISTORY
Change No. ENU Details Of Change
1 1-0-0 Initial document created and released in Mar 2007.

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0.5 ISSUE CONTROL
Date 01
Mar
07
Section
All All

INSTALLATION GUIDE FOR RD-8132
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0.6 REFERENCES
0.6.1 RD-8132 10W DS 1-0-0 Datasheet issued by product manager on 30 Dec 2006.
0.6.2 OMT v3.20 QE 1-1-0 OMT software equipment manual released in Feb 2007.

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0.7 GLOSSARY OF TERMS
Abbreviation Definition
ALC Automatic Level Control
ATT Attenuator
BTS Base Transceiver Station
CH Channel
dB Decibel
dBm Decibels relative to 1 milliwatt
DL Downlink
DT Donor Terminal
DPX Duplexer
FS Frequency Selector
GSM Global Standard for Mobile Communication
Hz Hertz
ID Identification
IF Intermediate Frequency
LNA Low Noise Amplifier
MCU Main Control Unit
MHz Megahertz
MT Mobile Terminal
MTBF Mean Time Between Failures
NF Noise Figure
OMC Operation & Maintenance Center
OMT Operation & Maintenance Terminal
PA Power Amplifier
PLL Phase Locked Loop
PSU Power Supply Unit
RF Radio Frequency
SIM Subscriber Identification Module
SMA Sub-Miniature A Connector
SMS Short Message Service
UL Uplink
VAC Volts Alternating Current
VDC Volts Direct 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,
authorized 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 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, Katong SC #05-43, Singapore 437844
Tel: + 65 6345 4908
Fax: + 65 6345 1186
Email: [email protected]
Thailand Office
Address: 3rd Floor, T. Shinawatra Building, 94 Sukhumvit Soi 23, Sukhumvit Road, Klongtoeynua,
Wattana, Bangkok 10110
Tel: [phone]
Fax: [phone]
Email: [email protected]
India Office
Address: Suit No. 202 Chintels Business Centre, A-11 Kailash Colony, New Delhi 110048, India
Tel: + 91 11 5173 9997 / 8
Fax: + 91 11 5173 9996
Email: [email protected]
Sweden Office
Address: Gustavslundsvagen 147, S- 167 51 Bromma, Stockholm, Sweden
Tel: [phone]
Fax: [phone]
Email: [email protected]
Brazil Sales Office
Address: Rua Gomes de Carvalho 1655 cj 101 / 102, 04547-006 Vila Olímpia, São Paulo, Brazil
Tel: [phone]
Fax: [phone]
Email: [email protected]
China Office
Address: Shenzhou Road, Guangzhou Science City, Guangzhou, China
Tel: + 86 20 2839 0000
Fax: + 86 20 2839 0136
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 1-0-0
Page number
Paragraph number
Line number
Figure number
Details of inaccuracies
Other comments
Contact points:
International Documentation Centre
E-mail: [email protected]
FAX: [phone]
End of section

INSTALLATION GUIDE FOR RD-8132
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1 RD-8132 REPEATER INTRODUCTION
The RD-8132 split band-selective repeater is designed for GSM850 band. A band-specific linear amplifier
and filtering effectively amplifies the desired BTS carriers and provides superior out-of-band rejection. The
unit can incorporate two 2~15 or 1~6MHz bandwidth adjustable segments. Remote configuration and
surveillance is possible through Comba’s remote control and monitoring system via PC or wireless modem
to the OMT/OMC. Internal Li-ion backup battery ensures alarm signals are sent out during power failure.
The unit comes in a sealed, cast aluminum enclosure, suitable for operation in all weather conditions.
Main features of RD-8132:
zTwo sub band-selective modules with adjustable bandwidth
zOutput power can be adjusted via OMT software.
zIntegrated wireless modem for remote configuration, monitoring and control.
zInternal backup battery keeps the alarm unit running for up to three hours after power failure.
zOptional OMC is available for remote operation and maintenance of a group of repeaters.
zDesigned for all outdoor application – waterproof, damp-proof and omni-sealed (IP65).
195
450
600
Figure 1: Front, side and bottom views of equipment enclosure
End of section

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2 EQUIPMENT DESCRIPTION
2.1 RD-8132 FUNCTIONAL BLOCK DIAGRAM
LNA1
LNA2
Service
Ant
Donor
Ant
Mobile
Power
Supply
Alarm
Indicator Main Control Unit
External
Power
OMT
Li-ion
BATT
Modem
DT MT
OMT
Computer with
Data card
Wireless
Modem
OMC
PA1
PA2
DL Band Selective
Module
DL Band Selective
Module
UL Band Selective
Module
UL Band Selective
Module
BTS
Figure 2: RD-8132 functional block diagram
In the downlink, the BTS signals are received by donor antenna of the repeater. After the duplexer, the
signals are sent to the LNA module for pre-amplification, followed by band selection by the Frequency
Select (FS) modules. The power amplifiers (PA) can amplify all carriers within the passband to the maximum
output power permitted. The duplexer permits combining with the uplink signals to share a single service
antenna.
In the uplink, the mobile signals are received by the service antenna. After the duplexer, the signals are sent
to the LNA, FS and PA modules before duplexed with the downlink signals. The uplink signals are sent to
the donor antenna for transmission back to the BTS.

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2.2 EQUIPMENT LAYOUT
Power Splitter
DL PA
GND
Microswitch
X29
PSU
OUT
UL PA
DPX
IN
DL LNA Power Splitter
UL FS
MCU
Li-ion Battery
VSWR Testing
GND
Surge
Protector
Lock
DL FS
Distribution Board
DPX
IN
OUT
UL LNA
Wireless Modem
Figure 3: Layout of the RD-8132
Typical RD-8132 units consist of the following components:
Low Noise Amplifier (LNA)
One Low Noise Amplifier (LNA) is installed at the front end of the UL and DL branches. The use of LNAs
gives better sensibility to the repeater.
Power Splitter:
One two-way power splitter is installed in each UL/DL branch.
Frequency Selector (FS)
The FS is used to select the desired carriers and reject unwanted signals.
Power Amplifier (PA)
It fulfils power amplification in both UL and DL branches.

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Duplexer (DPX)
The DPX located towards the DT and MT connections permits the uplink and downlink signals to share a
common antenna.
Li-ion Battery
The Li-ion battery pack is enclosed within a plastic cover and provides back-up supply to the MCU for up to
three hours in the event of mains failure.
Main Control Unit (MCU)
The MCU is used to monitor and control the operation of the repeater. It also provides the communication
interface for remote control and indication. Four LED indicators (H1~H3) provides the operation status of the
MCU.
Power Supply Unit (PSU)
The PSU converts the input 220VAC into a stable DC to supply power to FSA, LNA, and MCU module and
also to charge the internal Li-ion battery.
Distribution Board
The distribution board serves as a distributor for power and internal communication within the repeater. It
has the following connections: connectivity to function modules, MCU, RS232 port (X29) for local control.
Surge Protector
The AC Mains surge protector is mounted next to the PSU and has three connections: 220V VAC Live,
Neutral and Ground. This provides protection to the PSU. It is assumed that the antenna system will have
ample lightning protection. On the top of each surge protector is a little window with a coloured indicator.
‘Green’ indicates protection is available, and in the event of a fault, the colour will turn to ‘Black’. When this
occurs, the surge protector has to be replaced.
When the equipment is DC powered, no surge protector is required.
Wireless Modem
The wireless modem is mounted adjacent to the MCU. It has connections for RF, data and power. On the
wireless modem, there is an indicator LED to show the modem status. The wireless modem is used for
remote control and monitors, and for alarm transmission from the repeater back to the OMC.
VSWR Testing Module:
The VSWR testing module is located towards the MT connection. The use of VSWR Testing module permits
checking the downlink and uplink signals at the MT port.

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2.3 KIT OF PARTS (KOP)
The following table shows the kit of parts is supplied with the equipment.
Product identifier Description Qty.
R-9122C8-5140/1 Mounting rack (kit) 1
M10x110 Masonry bolt for wall mounting 4
M10x85x110 U bolt for pole mounting 2
5.5mm Allen key for socket screws 1
R-9122C/R-9122AC RS-232 cable 1
RS-200 Key 2
6.3A, AC 220V Replacement fuse for product variant with AC PSU
15A, DC +24V or -48V Replacement fuse for product variant with DC PSU 2
n/a Factory Test Report 1
RD-8132 QI 1-0-0 This manual
OMT v3.20 QE 1-1-0 OMT v3.20 Product Manual
v3.20 OMT software
V2.10 OMT Explorer software
MSDE2000 Database Server software
1 (CD)
Table 1: RD-8132 KOP
End of section

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3 INSTALLATION
3.1 WARNINGS AND ALERTS
Radio Frequency Energies
There may be situations, particularly for the workplace environments near 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.
High Voltage
The equipment has been designed and constructed 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 prevent danger.
Protective Earthing
Equipment provided for the purpose of protecting individuals from electrical risk must be properly used and
maintained.
Handling Precautions
Precautions should be taken in equipment handling activities such as lifting, lowering, pushing, pulling,
carrying, moving or holding, or activities to restrain an object, animal or a person from the equipment. It also
covers activities that require the use of force or effort, such as pulling a lever, or operating power tools.
Electrostatic Discharge (ESD)
Observe standard precautions when handling ESD-sensitive devices. Assume that all solid-state electronic
devices are ESD-sensitive. Ensure the use of a grounded wrist strap, or equivalent, 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 with snow protection. 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, extreme temperatures and high humidity).
Installation Location
Mounting surface shall be suitable to support the equipment weight: For RD-8132, the equipment weight is
about 37 kg.
Environmental
Humidity can affect the reliability of the equipment. It is recommended to install the equipment in locations
having stable temperature and unrestricted air-flow.
The RD-8132 equipment is designed to operate with an ambient temperature range of -33°C to +55°C and a
relative humidity ≤95%. If the direct day light temperature exceeds 40°C (104°F), a shelter should be
installed to protect the equipment from direct sunlight exposure.
Powering
The power supply unit (PSU) provides power to all modules within the enclosure. The PSU operates at
176~264 / 47~63Hz, DC -48V or DC +24V. It is recommended that the PSU operate on a dedicated AC
circuit breaker or fused circuit when VAC is used.
To avoid electromagnetic interference, the RD-8132 should be mounted in locations to minimize
interference from electromagnetic sources, such as high powered equipment.
Grounding Requirement
Verify that the equipment has been well grounded. This includes antennas and all cables connected to the
equipment. Ensure lightning protection for the antennas is properly grounded.
Cable Routing
Four cables entries to the equipment are provided: Two coaxial, one for the mains and one RS-232 cable for
local control with door opened.
Manual Handling
During transportation and installation, take necessary handling precautions to avoid potential physical injury
to the installation personnel and/or damages to the equipment.

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3.2.1 REPEATER INSTALLATION CHECKLIST
Installation Location Requirement Considerations
Working space available Ample space on mounting pole or wall surface
Recommended space: 800mm x 800mm x 800mm
VAC power:
176~264 / 47~63Hz
Power cord length is about 4m. Use a dedicated AC
breaker or fuse circuit, and with good access to an
earthing point.
DC -48V Power cord length is about 4m with CSA of 2.5mm2
Range: DC -72V to DC -36V.
The output current should be at least 10A.
There are three
power supply options
at each installation
location:
DC +24V Power cord length is about 4m with CSA of 2.5mm2
Range: DC +22V to DC +30V.
The output current should be at least 20A.
EMC and interference Do not locate near large transformers or motors that
may cause electromagnetic interference.
Minimize distance between equipment to DT
and MT antennas
Reduce signal loss in feeder cable
Suitable operating environment -40°C to +55°C and maximum 95% relative humidity.
Table 2: Repeater installation checklist
3.2.2 ANTENNA INSTALLATION CONSIDERATION
Installation Location Requirement Considerations
Locate donor antenna in a site to receive the
maximum signal level from the desired BTS and
orientate antenna to minimize pickup of other
BTS signals.
Field intensity of receiving site: Typical mobile phone
test field intensity ≥-70dBm
Orientate the service antenna to point near the
center of intended coverage area
Isolation between donor antenna and service
antenna (I) must be greater than the maximum
gain (Gmax) of the repeater in operation
I > Gmax + 15dB
Table 3: Antenna installation checklist
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 courier. If there is
damage, a shipping agent should be present before unpacking and inspecting the contents because
damage 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 anti-static packing until ready for installation. If damage is discovered at the
time of installation, contact the shipping agent.

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3.3.2 TOOLS
Refer to Appendix A for a full list of the recommended tools required for installation.
3.3.3 PREPARATION
Repeater:
zMounting surface or pole capable of support equipment weight: approximately 37kg.
zPower outlet within about 4m for VAC power supply, or within about 4m with CSA of 2.5mm2 for VDC
power supply.
zTerminate unused antenna or RF ports with a 50 ohm terminator.
zEarthing point/Safety ground within about 4m.
Antenna:
zAntenna installation is covered by the respective manual. Take normal precautions when preparing
and handling feeder cables to ensure they are not damaged.
3.3.4 MOUNTING RACK DIMENSION
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 dimension
The mounting rack is pre-installed with the equipment during shipment. Follow the following steps to
separate the mounting rack from the equipment before commencing wall or pole mounting:
1. Unlock the enclosure door and use Allen key to remove all hex socket bolts (M8x25mm) at the corners
of the enclosure to open the door.
2. Use Allen key to unscrew both recessed hex socket bolts (M8x80mm) at the lower corners of the
enclosure to remove the mounting rack.