COMBA RD-2122 User manual

INSTALLATION GUIDE FOR RD-2122
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RD-2122
WCDMA CHANNEL SELECTIVE
REPEATER
INSTALLATION GUIDE
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:
Technical Writing
Comba Telecom Ltd.
This is an unpublished work the copyright in which vests in Comba International ("Comba").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
1GENERAL INFORMATION.....................................................................................................12
2EQUIPMENT DESCRIPTION.................................................................................................13
2.1 RD-2122 FUNCTIONAL BLOCK DIAGRAM ..........................................................................13
2.2 EQUIPMENT LAYOUT ...........................................................................................................13
2.3 EQUIPMENT CONSTITUTION ..............................................................................................14
3INSTALLATION ......................................................................................................................15
3.1 WARNINGS AND ALERTS.....................................................................................................15
3.2 SITE PLANNING CONSIDERATIONS ...................................................................................16
3.2.1 INSTALLATION CHECKLIST .................................................................................................17
3.3 INSTALLATION PROCEDURES............................................................................................18
3.3.1 GOODS INWARDS INSPECTION .........................................................................................18
3.3.2 TOOLS ....................................................................................................................................18
3.3.3 MOUNTING RACK .................................................................................................................18
3.3.4 LISTING LUG INSTALLATION...............................................................................................19
3.3.5 WALL MOUNTING..................................................................................................................19
3.3.6 POLE MOUNTING..................................................................................................................20
3.3.7 ATTACHING EQUIPMENT ONTO MOUNTING RACK .........................................................21
3.3.8 DRIP-LOOP ............................................................................................................................21
3.4 EQUIPMENT CONNECTORS................................................................................................22
3.5 EQUIPMENT CONNECTIONS...............................................................................................22
3.5.1 GROUNDING CONNECTION ................................................................................................22
3.5.2 SERVICE VOLTAGE CONNECTION.....................................................................................23
3.5.3 LI-ION BATTERY CONNECTION ..........................................................................................23
3.5.4 RF CABLE CONNECTION .....................................................................................................23
3.5.5 PHYSICAL CONNECTION TO OMT PC................................................................................24
3.5.6 WIRELESS MODEM ANTENNA CONNECTION...................................................................24
3.5.7 EXT_ALM CONNECTION ......................................................................................................24
3.6 PREPARATION FOR REMOTE CONTROL OF EUIPMENT USING MODEM .....................25
4COMMISSIONING ..................................................................................................................27
4.1 PRE-COMMISSIONING .........................................................................................................27
4.2 MCU LED INDICATORS.........................................................................................................27
4.3 OMT OVERVIEW....................................................................................................................28
4.3.1 OMT SOFTWARE INSTALLATION........................................................................................29
4.3.2 OMT SOFTWARE VERSION .................................................................................................29
4.3.3 NON-VOLATILE MEMORY ....................................................................................................29
4.4 CONNECTION TO OMT.........................................................................................................29
4.5 DESCRIPTIONS OF PARAMETERS .....................................................................................30
4.5.1 COMMON INFORMATION.....................................................................................................30
4.5.2 RF INFORMATION .................................................................................................................31
4.5.3 ALARM INFORMATION .........................................................................................................33
4.5.4 PROPERTIES INFORMATION ..............................................................................................34

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4.6 FAULT MANAGEMENT..........................................................................................................34
4.6.1 ALARM ACKNOWLEDGEMENT............................................................................................35
4.7 COMMISSIONING PROCEDURES .......................................................................................36
5MAINTENANCE......................................................................................................................37
5.1 O-RING FITTING DETAILS....................................................................................................37
6APPENDICES.........................................................................................................................38
6.1 APPENDIX A: TOOLS AND EQUIPMENT FOR INSTALLATION..........................................38
6.2 APPENDIX B: RMA (RETURN MATERIAL AUTHORIZATION) FORM ................................39

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0.3 INDEX TO FIGURES AND TABLES
Figure 1: Front, side and bottom views of enclosure ................................................................................... 12
Figure 2: Functional block diagram .............................................................................................................. 13
Figure 3: Layout of equipped product .......................................................................................................... 13
Figure 4: Mounting rack dimension .............................................................................................................. 18
Figure 5: Attach the lifting lug to the enclosure ............................................................................................ 19
Figure 6: Wall mounting overview ................................................................................................................ 19
Figure 7: Pole mounting overview ................................................................................................................ 20
Figure 8: Attaching the equipment onto the mounting rack ......................................................................... 21
Figure 9: Equipment connectors .................................................................................................................. 22
Figure 10: Pins allocation for 7-pin EXT-ALM connector ............................................................................. 24
Figure 11: Wireless modem ......................................................................................................................... 25
Figure 12: Diagram of wireline modem ........................................................................................................ 26
Figure 13: MCU LED indicators.................................................................................................................... 27
Figure 14: OMT main screen........................................................................................................................ 28
Figure 15: System information window ........................................................................................................ 30
Figure 16: RF information – alarm threshold widow .................................................................................... 32
Figure 17: Switch configuration window....................................................................................................... 32
Figure 18: O-Ring fitting details.................................................................................................................... 37
Table 1: RD-2122 connectors ...................................................................................................................... 22
Table 2: External alarm signal definition ...................................................................................................... 24
Table 3: Voltage applied to EXT Alarm pin .................................................................................................. 24
Table 4: Wireline modem connectors........................................................................................................... 26
Table 5: Wireline status LEDs ...................................................................................................................... 26
Table 6: LED description .............................................................................................................................. 27
Table 7: RD-2122 RF parameters description ............................................................................................. 31
Table 8: Alarm list......................................................................................................................................... 33
Table 9: Properties Info descriptions............................................................................................................ 34
Table 10Alarms diagnosis ............................................................................................................................ 35
Table 11: Commissioning procedures.......................................................................................................... 36

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0.4 HISTORY
Change No. ENU Details Of Change
1 1-0-0 Original document created and released in Feb 2007.
2 1-0-1 Document restructured with sections KOP and Cable Requirements
deleted.
3 1-0-2 Updated Hongkong office address in Feb 2008

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0.5 ISSUE CONTROL
Date 10
Feb
07
02
Jul
07
20
Feb
08
Section
All All All All

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0.6 REFERENCES
0.6.1 RD-2122 III DS 2-0-0 Datasheet issued by product manager in Aug 2006
0.6.2 R-3122 User Manual
Doc Code: R-31221-1001YH
User manual released in July 2005
0.6.3 OMT v3.20 Product Manual
ENU: 1-1-0
OMT manual developed and 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
dB Decibel
dBm Decibels relative to 1 milliwatt
DL Downlink
DT Donor Terminal
DPX Duplexer
FS Frequency Selection
Hz Hertz
ID Identification
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
PLL Phase Locked Loop
PSU Power Supply Unit
RF Radio Frequency
SMA Sub-Miniature A Connector
SMS Short Message Service
UL Uplink
VAC Volts Alternating Current
VDC Volts Direct Current
VSWR Voltage Standing Wave Ratio
WCDMA Wideband-Code Division Multiple Access

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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
that 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 labeling 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 that 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 Notice:
These draw the attention of personnel to hazards that 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 (RMA) should be completed giving the required information. A sample
RMA form is provided in Appendix B.
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: 611 East Wing, No. 8 Science Park West Avenue, Hong Kong Science Park,
Tai Po, Hong Kong.
Tel: [phone]
Fax: [phone]
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]
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: No.10, 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 or remedial action can be carried out promptly, it is necessary to fill out and
return 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 1-0-2
Page number
Paragraph number
Line number
Figure number
Details of inaccuracies
Other comments
Contact points:
Technical Writing
E-mail: [email protected]
FAX: [phone]
End of section

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1 GENERAL INFORMATION
The RD-2122 channel selective repeater is designed for operation in the WCDMA band. Channel-specific
linear amplifier and filtering effectively amplifies the desired BTS carrier and provides superior out-of-band
rejection. Typical units incorporate up to two pairs (uplink and downlink) of channel selective modules with
frequencies programmed to specific requirements of the network. 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 in the event of power failure. The
RD-2122 comes in a sealed, well-ventilated cast aluminum enclosure, suitable for all weather conditions.
This document is to be read in conjunction with the OMT document (Ref. 0.6.3).
Main features of RD-2122:
RD-2122 is a high quality repeater with the following features:
•Different total output power of 2W, 5W and 10W.
•Permits frequency selection when operating in a tightly spaced channel environment.
•Integrated wireless modem for remote configuration, monitor and control. (Optional)
•Internal backup battery keeps the alarm unit running for up to three hours in the event of power failure.
•OMC is available for remote operation and maintenance. (Optional)
•Designed for all outdoor application - waterproof, damp-proof and omni-sealed (IP65).
570
160330
2W 10W5W
175
570
200
615
Figure 1: Front, side and bottom views of enclosure
End of section

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2 EQUIPMENT DESCRIPTION
2.1 RD-2122 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 Channel Selective
Module
DL Channel Selective
Module
UL Channel Selective
Module
UL Channel Selective
Module
BTS
Figure 2: Functional block diagram
In the downlink, the BTS signals are received by donor antenna of the equipment. After the duplexer, the
signals are sent to the LNA module for pre-amplification, followed by band selection using the Frequency
Selection (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 duplexing with the downlink signals. The uplink signals are
sent to the donor antenna for transmission back to the BTS.
2.2 EQUIPMENT LAYOUT
DL PA
PSU
MCU
Distribution board
UL FS
DL FS
Li-ion battery Surge protector
UL PA
DPX DPX
MTDT
Wireless modem
Figure 3: Layout of equipped product

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2.3 EQUIPMENT CONSTITUTION
The figure above shows that typical RD-2122 units consist of:
Frequency Selection (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.
Duplexer (DPX): The DPX is located towards the DT and MT terminals and permits the uplink and
downlink signals to share a common antenna. One LNA is integrated in each DPX.
Li-ion Battery: The Li-ion battery pack is enclosed within a plastic cover and provides back-up supply to
the MCU to send out alarm signals in the event of mains failure.
Power Supply Unit (PSU): The PSU converts the input voltage into a stable DC to provide power for the
internal functional modules and to charge the internal Li-ion battery.
Main Control Unit (MCU): The MCU is used to monitor and control the operation of the equipment. It also
provides the communication interface for remote control and indication. LED indicators provide the
operation status of the MCU.
Distribution Board: The distribution board serves as a distributor for power and internal communication
within the equipment. It provides connectivity to function modules, MCU, RS232 port for local control.
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 equipment back to
the OMC.
Surge Protector: The AC Mains surge protector is mounted next to the PSU and has three connections:
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.
Note: When the equipment is DC powered, no surge protector is required.
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, 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 objects, insects and persons from the equipment. It
also covers the activities that require the use of force or effort such as pulling a lever, or operating power
tools.
Where some of the abovementioned activities are required, the equipment must be handled with care to
avoid being damaged.
Electrostatic Discharge (ESD)
Take necessary precautions when handling ESD-sensitive devices. Assume that all solid-state electronic
devices are ESD-sensitive. Use 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
Outdoor equipment are 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 rainfall, extreme temperatures and high humidity).
Installation Location
Mounting surface shall be capable of supporting the weight of the equipment.
In order to avoid electromagnetic interference, a proper mounting location must be selected to minimize
interference from electromagnetic sources such as large electrical equipment.
Environmental
Humidity has an adverse effect on the reliability of the equipment. It is recommended to install the
equipment in locations having stable temperature and unrestricted air-flow.
The installation location for the product should be well ventilated. The equipment has been designed to
operate at the temperature range and humidity level as stated in the product specifications in the
datasheet.
Direct sun light exposure to the equipment should be avoided. Provide additional shelter if necessary.
Powering
The power supply unit (PSU) provides power to all modules within the equipment. Depending on the
product variant, it is recommended that the PSU operates on a dedicated circuit breaker or fused circuit.
Grounding Requirement
Verify that the equipment has been well grounded. This includes antennas and all cables connected to the
system. Ensure lightning protection for the antennas is properly grounded.
Cable Routing
Depending on equipment configuration, a variety of types of cables are required. Where applicable, ensure
cables are properly routed and secured so that they are not damaged.
Manual Handling
During transportation and installation, take necessary handling precautions to avoid potential physical
injury to the installation personnel and the equipment.

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3.2.1 INSTALLATION CHECKLIST
•Working space available for installation and maintenance for each mounting arrangement. Ensure
unrestricted airflow.
•Ensure earthing point is within reach of the ground wire.
•Ensure a power source is within reach of the power cord and the power source has sufficient capacity
(about 13A for 220VAC, 20A for +24VDC, 10A for -48VDC).
•Where appropriate, ensure unused RF connectors are terminated.
•Do not locate the equipment near large transformers or motors that may cause electromagnetic
interference.
•Reduce signal loss in feeder cable by minimizing the length and number of RF connections.
•Ensure VSWR of antennas system < 1.5:1.
•Ensure equipment will be operated within the stated environment (refer to datasheet)
•Observe handling of all cables to prevent damage.
•Donor antenna should have a narrow beamwidth positioned in line-of-sight (LOS) to donor BTS site so
that the donor signal level is maximized. This allows the use of minimum gain to achieve the maximum
DL output power. The UL gain is typically set lower than or equal to the DL gain to minimize noise
interference to the donor BTS.
•Service antenna should be selected based on the type of service area, e.g., indoor antenna for indoor
application, and panel antenna for outdoor application.

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3.3 INSTALLATION PROCEDURES
3.3.1 GOODS INWARDS INSPECTION
•Verify the number of packages received against the packing list.
•Check all packages for external damage and report any external damage to the shipping courier. If
damage occurs, a shipping agent should be present before unpacking and inspecting the contents
because damage caused during transit is the responsibility of the agent.
•Open and check each package against the packing list. If any items are missing, contact Comba.
•Do not remove items from antistatic packing until ready for installation. If damage is discovered at the
time of installation, contact the shipping agent.
3.3.2 TOOLS
Refer to Appendix A for a full list of recommended tools required for installation.
3.3.3 MOUNTING RACK
The mounting rack is used for mounting the equipment to either a wall or on a pole. Shown below is the
diagram of the mounting rack. The round holes are used for masonry bolts, and square holes for carriage
bolts.
200
120
4-13*13
240
4- 15
Figure 4: Mounting rack dimension
The mounting rack is pre-installed with the equipment for shipment. It needs to separate the mounting rack
before commencing to wall or pole mounting.
Refer to Figure 8, use Allen key to unscrew M8x20mm hex socket bolts at 1, 2, 3, 4, 5, and 6 to separate
the mounting rack from the equipment.

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3.3.4 LISTING LUG INSTALLATION
This is provided to facilitate lifting and positioning of the equipment during installation. The lifting lug is to
be attached to the rear of the appropriate enclosure as shown below.
Spring Washer M6
Lifting Lug
Hex Bolt M6x12
Figure 5: Attach the lifting lug to the enclosure
3.3.5 WALL MOUNTING
•Drill four holes on the wall using the position of the four round holes in the mounting rack as a guide.
•Secure the mounting rack onto the wall where four holes have been drilled with four M10x110mm
masonry bolts.
Mounting Rack
Masonry Bolt
M10x110
Figure 6: Wall mounting overview

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3.3.6 POLE MOUNTING
•The equipment can be mounted on poles of about 60~75mm in diameter.
•Secure the mounting rack onto the pole using M12x120mm bolts and clamps using carriage bolts
through the square holes.
•Tighten and lock M12 nuts together onto the carriage bolts.
Mounting Rack
Pole
M12 Nut
Clamp
M12x160
Carriage Bolt
Figure 7: Pole mounting overview