Comba Telecom RD 2020 User Manual
INSTALLATION GUIDE FOR RD-2020
RD-2020
CDMA AWS BANDWIDTH ADJUSTABLE
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This is an unpublished work the copyright in which vests in Comba International ("Comba").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.
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:
Comba Telecom Ltd.
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INSTALLATION GUIDE FOR RD-2020
0.2 CONTENTS
Section Page
CONTENTS ...........................................................................................................................2
0.2
0.3 INDEX TO FIGURES AND TABLES .....................................................................................3
0.4 HISTORY ...............................................................................................................................4
0.5 GLOSSARY OF TERMS........................................................................................................5
0.6 SAFETY NOTICES AND ADMONISHMENTS ......................................................................6
1 GENERAL INFORMATION....................................................................................................7
2 EQUIPMENT DESCRIPTION................................................................................................8
2.1 RD-2020 FUNCTIONAL BLOCK DIAGRAM .........................................................................8
2.2 EQUIPMENT LAYOUT ..........................................................................................................9
2.3 EQUIPMENT CONSTITUTION ...........................................................................................10
2.4 KITS OF PART.....................................................................................................................11
3 INSTALLATION ...................................................................................................................12
3.1 WARNINGS AND ALERTS..................................................................................................12
3.2 SITE PLANNING CONSIDERATIONS ................................................................................13
3.2.1 INSTALLATION CHECKLIST ..............................................................................................14
3.3 INSTALLATION PROCEDURES.........................................................................................15
3.3.1 GOODS INWARDS INSPECTION ......................................................................................15
3.3.2 INSTALLATION TOOLS ......................................................................................................15
3.3.3 MOUNTING RACK ..............................................................................................................15
3.3.4 LIFTING LUG INSTALLATION ............................................................................................16
3.3.5 WALL MOUNTING DETAILS ..............................................................................................16
3.3.6 POLE MOUNTING DETAILS...............................................................................................17
3.3.7 ATTACHING EQUIPMENT ONTO MOUNTING RACK ......................................................18
3.3.8 DRIP-LOOP .........................................................................................................................18
3.4 EQUIPMENT CONNECTORS.............................................................................................19
3.5 EQUIPMENT CONNECTIONS............................................................................................19
3.5.1 GROUNDING CONNECTION .............................................................................................19
3.5.2 SERVICE VOLTAGE CONNECTION..................................................................................20
3.5.3 LI-ION BATTERY CONNECTION .......................................................................................20
3.5.4 RF CABLE CONNECTION ..................................................................................................20
3.5.5 EXT_ALM CONNECTION ...................................................................................................21
3.5.6 RJ45 WATERPROOF CABLE CONNECTION ...................................................................21
3.6 PREPARATION FOR REMOTE CONTROL OF EQUIPMENT USING MODEM ...............23
4 COMMISSIONING ...............................................................................................................24
4.1 PRE-COMMISSIONING ......................................................................................................24
4.2 MCU LED INDICATORS......................................................................................................24
4.3 WEB OMT ............................................................................................................................25
4.3.1 CONNECTION FROM PC TO EQUIPMENT ......................................................................25
4.4 COMMISSIONING PROCEDURE.......................................................................................28
5 MAINTENANCE...................................................................................................................30
5.1 O-RING FITTING DETAILS.................................................................................................30
6 APPENDICES......................................................................................................................31
6.1 APPENDIX A: TOOLS AND EQUIPMENT FOR INSTALLATION.......................................31
6.2 APPENDIX B: SERVICING POLICY AND RETURN OF EQUIPMENT..............................32
6.3 APPENDIX C: RMA (RETURN MATERIAL AUTHORIZATION) FORM .............................33
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INSTALLATION GUIDE FOR RD-2020
0.3 INDEX TO FIGURES AND TABLES
Figure 1: Front, Side and Bottom Views of Enclosure ................................................................................... 7
Figure 2: Functional Diagram ......................................................................................................................... 8
Figure 3: Layout of Equipped Product............................................................................................................ 9
Figure 4: Mounting Rack Dimension ............................................................................................................ 15
Figure 5: Attach the Lifting Lug to the Enclosure ......................................................................................... 16
Figure 6: Wall Mounting Overview ............................................................................................................... 16
Figure 7: Pole Mounting Overview ............................................................................................................... 17
Figure 8: Attaching the Equipment onto the Mounting Rack........................................................................18
Figure 9: Equipment Connectors.................................................................................................................. 19
Figure 10: Pins Allocation for 7-pin EXT-ALM Connector............................................................................ 21
Figure 11: RJ45 Waterproof Cable Plug ...................................................................................................... 22
Figure 12: Wireless Modem ......................................................................................................................... 23
Figure 13: MCU LED Indicators ................................................................................................................... 24
Figure 14: PC Protocol Setting..................................................................................................................... 25
Figure 15: Log in........................................................................................................................................... 25
Figure 16: Alarm Information........................................................................................................................ 26
Figure 17: User Info& Maintenance.............................................................................................................. 26
Figure 18: Equipment Information ................................................................................................................ 27
Figure 19: General Information .................................................................................................................... 27
Figure 20: Configuration............................................................................................................................... 27
Figure 21: Current Status ............................................................................................................................. 28
Figure 22: O-Ring Fitting Details .................................................................................................................. 30
Table 1: RD-2020 KOP ................................................................................................................................ 11
Table 2: RD-2020 Connectors...................................................................................................................... 19
Table 3: External Alarm Signal Definition..................................................................................................... 21
Table 4: Voltage Applied to EXT Alarm Pin.................................................................................................. 21
Table 5: LED Description ............................................................................................................................. 24
Table 6: IP Setting Quick Look-up Table ..................................................................................................... 26
Table 7: Commissioning............................................................................................................................... 29
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INSTALLATION GUIDE FOR RD-2020
0.4 HISTORY
Change No. ENU Details Of Change
1 1-0-0 This manual first created in July 2010.
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INSTALLATION GUIDE FOR RD-2020
0.5 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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INSTALLATION GUIDE FOR RD-2020
0.6 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.
This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device
does not cause harmful interference.
Caution: The user is cautioned that changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
To comply with FCC RF exposure requirements, the device and the antenna for this device must be
installed to ensure a minimum separation distance of 2.84 meters or more from a person's body. Other
operating configurations should be avoided.
End of section
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INSTALLATION GUIDE FOR RD-2020
1 GENERAL INFORMATION
The RD-2020 CDMA AWS bandwidth adjustable repeater is designed for operation in the CDMA network
for AWS band. Band specific linear amplifier and filtering effectively amplifies the desired Node B carrier
and provides superior out-of-band rejection. Typical units with adjustable bandwidth are programmed to
specific requirements of the network. Remote configuration and surveillance is possible through Comba’s
remote control and monitoring system, via PC 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-2020 comes in a sealed,
well-ventilated cast aluminum enclosure, suitable for all weather conditions.
Main Features:
RD-2020 is a high quality repeater with the following features:
• Integrated wireless modem for remote configuration, monitoring and control (Optional).
• Internal backup battery keeps the alarm unit running for up to three hours in the event of power failure
(Optional).
• OMC is available for remote operation and maintenance. (Optional)
• Designed for all outdoor installation - waterproof, damp-proof and omni-sealed (IP65).
615
330
Figure 1: Front, Side and Bottom Views of Enclosure
End of section
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INSTALLATION GUIDE FOR RD-2020
2 EQUIPMENT DESCRIPTION
2.1 RD-2020 FUNCTIONAL BLOCK DIAGRAM
Figure 2: Functional 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.
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INSTALLATION GUIDE FOR RD-2020
2.2 EQUIPMENT LAYOUT
DL PA
DL FS Module
UL PA
UL FS Module
Distribution Board
MCU
Door Open Switch
PSU
DT
Integrated
Duplexer
Li-ion
Battery
DT
Surge
Arrestor
MT
MT
Integrated
Duplexer
Figure 3: Layout of Equipped Product
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INSTALLATION GUIDE FOR RD-2020
2.3 EQUIPMENT CONSTITUTION
The RD-2020 consists of the following modules:
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.
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.
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.
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.
Surge Arrestor: The AC Mains surge arrestor 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 arrestor 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 arrestor is required.
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