Comba Telecom Network Systems RX-8139 850MHz CDMA and UMTS Dual Mode Wireless Band Selective Repeater User Manual RX 8139 QE 1 0 0
Comba Telecom Ltd. 850MHz CDMA and UMTS Dual Mode Wireless Band Selective Repeater RX 8139 QE 1 0 0
PX8RX-8139 User Manual Rev2

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USER MANUAL 
RX-8139 QE: 1-0-0 
 Comba Telecom Ltd. 
RX-
8
1
39

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: 
This is an unpublished work the copyright in which vests in Comba International 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. 

USER MANUAL FOR RX-8139 
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0.1     CONTENTS  
Section  Page
0.1CONTENTS ........................................................................................................................... 3
0.2INDEX TO FIGURES AND TABLES ..................................................................................... 4
0.3HISTORY ............................................................................................................................... 5
0.4GLOSSARY OF TERMS ....................................................................................................... 6
0.5SAFETY NOTICES AND ADMONISHMENTS ......................................................................  7
1GENERAL INFORMATION ................................................................................................... 9
2EQUIPMENT DESCRIPTION.............................................................................................. 10
2.1EQUIPMENT LAYOUT ........................................................................................................ 10
2.2KIT OF PARTS .................................................................................................................... 11
3INSTALLATION ................................................................................................................... 12
3.1WARNINGS AND ALERTS ................................................................................................. 12
3.2SITE PLANNING CONSIDERATIONS ................................................................................ 13
3.3INSTALLATION PROCEDURES ........................................................................................ 14
3.3.1GOODS INWARDS INSPECTION ...................................................................................... 14
3.3.2TOOLS ................................................................................................................................. 14
3.3.3PREPARATION ................................................................................................................... 14
3.3.4WALL MOUNTING .............................................................................................................. 15
3.3.5POLE MOUNTING OF MOUNTING RACK......................................................................... 16
3.3.6DRIP-LOOP ......................................................................................................................... 16
3.4EQUIPMENT CONNECTORS ............................................................................................ 17
3.4.1CONNECTORS ................................................................................................................... 17
3.4.2GROUNDING CONNECTION ............................................................................................. 18
3.4.3RF CONNECTION ............................................................................................................... 18
3.4.4EXTERNAL ALARM CONNECTION ................................................................................... 18
4COMMISSIONING ............................................................................................................... 19
4.1PRE-COMMISSIONING TASKS ......................................................................................... 19
4.2MCU LED INDICATORS ..................................................................................................... 19
4.3COMMISSIONING PROCEDURES .................................................................................... 20
5MAINTENANCE .................................................................................................................. 22
6APPENDICES...................................................................................................................... 23
6.1COMMISSIONING PROCEDURES .................................................................................... 23
6.2APPENDIX B: RMA (RETURN MATERIAL AUTHORIZATION) FORM ............................. 24

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0.2     INDEX TO FIGURES AND TABLES 
Figure 1: Views of RX-8139 Enclosure .........................................................................................................9
Figure 2: RX-8139 Internal Layout ............................................................................................................. 10
Figure 3: Mounting Rack Overview ............................................................................................................ 14
Figure 4: Wall Mounting ............................................................................................................................. 15
Figure 5: Pole Mounting Overview ............................................................................................................. 16
Figure 6: Bottom Panel Interface Diagram ................................................................................................ 17
Figure 7: LEDs ........................................................................................................................................... 19
Table 1: Equipment KOP ........................................................................................................................... 11
Table 2: Cable Connection ........................................................................................................................ 13
Table 3: LED Indicators ............................................................................................................................. 19
Table 4: Commissioning ............................................................................................................................ 21

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0.3     HISTORY 
Change No.  ENU  Details Of Change 
1  1-0-0  RX-8139 user manual first created in June 2012 and referred to its 
Chinese manual RX-8139-1001YH. 

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0.4     GLOSSARY OF TERMS 
ALC    Automatic Level Control 
ATT    Attenuation   
AFC  Antenna Feedback Cancellation 
BTS   Base Transceiver Station   
dB    Decibel   
dBm    Decibels relative to 1 milliwatt   
DL    Downlink   
DPX    Duplexer   
DT   Donor Terminal   
FSK  Frequency Shift Keying 
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   
NF    Noise Figure   
OMC    Operation & Maintenance Center   
OMT    Operation & Maintenance Terminal   
OP Optical Fiber 
PA   Power Amplifier 
PLL    Phase Locked Loop  
PSU    Power Supply Unit   
RF    Radio Frequency   
RX Receive 
SMA    Sub-Miniature “A” Connector 
SIU Slide-In-Unit 
TX Transmit 
UL    Uplink   
VAC    Volts Alternating Current   
VSWR    Voltage Standing Wave Ratio   

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0.5     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 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: 
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: 
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. 
CAUTION: danger of explosion if battery is incorrectly replaced. Replace only with the same or 
equivalent type.  
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. 
This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device 
does not cause harmful interference. 
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 1.9 meters or more from a person's body. Other 
operating configurations should be avoided. 
End of Section 

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USER MANUAL FOR RX-8139 
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1 GENERAL INFORMATION 
RX-8139 850MHz CDMA and UMTS Dual Mode Wireless Band Selective Repeater (hereinafter called 
“RX-8139”) is designed for 850MHz network. Working frequency and working system can be customized 
for flexible configuration.  
Characteristics of RX-8139 are as follows: 
•  Supports 7.5 MHz of CDMA subband and 5 MHz of WCDMA subband. 
•  Allows DL VSWR alarm, DL input field intensity detect and output power detect functions, easy for 
installation. 
•  Automatic gain temperature compensation function which can maintain regular operation among 
working temperature.  
•  Local Operation and Maintenance Terminal (OMT): operating status and parameters can be set or 
monitored by OMT PC locally. It can also check the downlink power and download the latest OMT 
version. 
•  Operation Maintenance Center (OMC): system working parameters and communication configuration 
can be set or inquired remotely through Ethernet cable. 
•  Designed for all weather outdoor application – waterproof, damp-proof and Omni-sealed. 
The following figure shows the enclosure of the RX-8139. 
420
330 182
Figure 1: Views of RX-8139 Enclosure 
End of Section 

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2 EQUIPMENT DESCRIPTION 
2.1 EQUIPMENT LAYOUT 
The following figure shows RX-8139 internal layout. 
Li-ion Battery 
Managed 
Module
UL PA
DL PA
MT Filter
DT Integrated 
Duplexer
Surge 
Arrestor
PSU
Integrated 
Module
ANT
X2
Figure 2: RX-8139 Internal Layout 

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2.2  KIT OF PARTS 
For this system, the following are shipped: 
Table 1: Equipment KOP 
Product Identifier  Description  Quantity
RX-8139 manual  This equipment manual on CD-Rom  1 
CPC Connector  X14J7P  1 
Ethernet Cable  2m 1 
Masonry Bolt   M8x80  4 
U Bolt (with 2 nuts, flat washer, 
spring washer per bolt)  M10x85x110 2 
Power Supply Cable   n/a  1 
T-shape Pentagon Screw 
Wrench   5mm 1 
OMT V5.0 or above  OMT software on CD-Rom  1 
Factory Test Report  N/A  1 
End of Section

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3 INSTALLATION 
3.1  WARNINGS AND ALERTS 
Radio Frequency Energies 
There may be situations, particularly for 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 work activity on or near equipment involving installation, operation or maintenance must be, as far as 
reasonably, free from danger.  
Where there is a risk of damage to electrical systems involving adverse weather, extreme temperatures, 
wet, corrosive or dirty conditions, flammable or explosive atmospheres, the system must be suitably 
installed to prevent danger. 
Protective Earthing 
Equipment provided for the purpose of protecting individuals from electrical risk must be suitable for the 
purpose and properly maintained and used.  
Handling Precautions 
This covers a range of activities including lifting, lowering, pushing, pulling, carrying, moving, holding or 
restraining an object, animal or person. 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 for 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 site considerations are listed below: 
•  The distance between the donor antenna and the BS should satisfy line of sight requirements for 
maximum coverage area.  The received spots accept field intensity at least -70dBm.  
•  Make sure that TX and RX antennas isolation should more than the max gain that of -15dB. 
•  Supply power near by the BS and easily access to the grounding spot.  
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. 
Chassis output interface should install higher 1.2m than the ground. 
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 which should under the 
temperature that of -33oC ~+55oC and relative humidity of maximal 95%.  
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. 
Cable requirements are as follow: 
Table 2: Cable Connection 
 Cable   Connection  Description 
Coaxial Cable   N to N  Connect BS cable to DT port 
Coaxial Cable   N to N  Connect serve antenna  cable 
to MT port 
Local Commissioning Cable   RJ45  Connect with PC to realize local 
commissioning 
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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3.3   INSTALLATION PROCEDURES 
3.3.1  GOODS INWARDS INSPECTION 
z  Verify the number of packages received against the packing list.  
z  Check 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 caused during transit is the responsibility of the agent.  
z  Open and check each package against the packing list. If any items are missing, please contact 
Comba. 
z  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 
See Appendix A for a full list of the recommended tools required for installation and maintenance. 
3.3.3 PREPARATION 
z  Wall mounting with the masonry bolts supplied, which make use of the outer holes. 
z  Pole Mounting with the clamp kit supplied, which make use of the inner holes. 
236
186
200  
Figure 3: Mounting Rack Overview 

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3.3.4 WALL MOUNTING 
z  Drill holes on the wall by using the position of the four round holes on the Mounting rack as a guide.  
z  Insert the masonry bolts through the round holes and tighten them to take the weight of the entire 
enclosure. 
z  Hook the enclosure up onto the mounting rack and align the hole positions to that of the mounting 
rack, then installed the hex socket bolt to complete the installation. 
M8 Masonry Bolt
Mounting Rack
M8 Hex Socket Bolt
Figure 4: Wall Mounting 

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3.3.5  POLE MOUNTING OF MOUNTING RACK 
z  The equipment can be mounted on a pole of about 60~75mm in diameter. 
z  Insert and tighten the two U bolts to secure the mounting rack onto the pole. 
z  The remaining installation to secure the enclosure to the mounting rack is identical to wall mounting. 
U Bolt
Pole
Mounting Rack
M8 Hex Socket Bolt
Figure 5: Pole Mounting Overview 
3.3.6 DRIP-LOOP 
Comba recommends that every horizontal cable entry to the equipment forms a 'U' before its entry to the 
equipment. Water on the cable will drip down at the bottom of the loop and will not accumulate at the 
equipment connectors. 

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3.4 EQUIPMENT CONNECTORS 
3.4.1 CONNECTORS 
. 
EXT_ALM
POWER
DT TX
RX
Figure 6: Bottom Panel Interface Diagram  

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3.4.2 GROUNDING CONNECTION 
Ground Connection 
To ensure safe operation of the product, a ground (earth) connection is required. For single phase AC 
power source, the product must be grounded by connecting the “earth wire” of the power cord to the 
ground terminal of the AC supply.  
3.4.3  RF CONNECTION  
z Donor antenna connection: Connect the cable form donor antenna to DT port 
z Mobile antenna connection: Connect the cable form mobile antenna to MT port 
3.4.4  EXTERNAL ALARM CONNECTION 
The external alarm port is used to connect with other external equipment and alarm ports. Connection is 
not must in case there is no external alarm port. 
End of Section 

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4 COMMISSIONING 
4.1 PRE-COMMISSIONING TASKS 
After equipment installation, perform the following steps before equipment powering and commissioning, 
check that the expected voltage, current, and power levels do not violate any ratings. Double check all 
connections including ground before applying power. Do not manipulate circuits or make changes when 
power is applied: 
•  Visually inspect the power connection within the equipment. Ensure that the power cable is correctly 
and securely connected, including grounding wire, RF cable and optical cable.  
•  Check grounding connection and verify that the ground resistance is less than 5Ω. 
•  Connect the equipment to the PC installed with OMT software.  
•  Check antenna system return loss which  working frequency band return loss should less than -14dB 
(VSWR < 1.5) 
•  The online commissioning can be commenced with following the commissioning steps. 
4.2  MCU LED INDICATORS  
Three diagnostic LEDs are located on integrated module; each indicates the status of a particular 
function: 
LED_ALARM
LED_MODEM
LED_RUN
Figure 7: LEDs  
Table 3: LED Indicators 
Identifier  Colour  Indication 
LED_RUN Green  
Operation indicator – Flashes once every second to 
indicate normal system operation. 
LED_ALARM  Red  Alarm indicator. ON = alarm; OFF = no alarm 
LED_MODEM Red N/A 

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4.3 COMMISSIONING PROCEDURES 
Perform the following procedures for system commissioning. 

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Table 4: Commissioning 
Commissioning Tasks  Observation 
1.  On-line and Inquiry status 
z  Activate the OMT Main window. The system Initialization will 
completed in about 2 minutes.  
z  Click “Connect” button to enquire the repeater’s status. Proceed if 
there is no alarm; else check the failure and attend to the alarm. 
2.  Set Channel No. 
z  Keep RF switch ON and set the channel number of the repeater’s 
operating frequency. 
3.  Adjust Downlink Output 
Power and align donor 
antenna 
z  Observe DL input power from measured value. Align the direction 
of donor antenna until the DL input power reading is maximized. 
z  Note: To ensure that the measured DL input power is accurate, one 
should set the DL ATT to “0” before performing the check. 
4.  Configure [Equipment ID]  z  Go to [Properties Info] and set [Equipment ID]. 
5. Comm. Config 
z  Enable the power supply by selecting “On” in [RF] -> [Switch]; go to 
[Properties Info.] -> [Comm. Config.] and set OMC Phones No. , the 
service No. of SMSC, Report Mode. 
6. Select Monitoring 
Parameters 
z  Select the equipment controlled and monitored parameters. 
z  If the external devices are connected to the equipment for 
management, please enable in the [External Alarm Info.] Interface. 
7.  Test coverage area field 
intensity and adjust 
service antenna. 
z Use test-handset to verify field intensity within the coverage area. If 
needed, realign the service antenna to achieve the desired 
coverage. 
z Note: If during operation, the equipment gain could not be set to 
maximum or the output power is not high enough due to insufficient 
donor and service antennas isolation, then the antennas’ position 
should be changed to increase isolation. If the output power is too 
high and ALC is activated, then adjust the DL ATT to achieve 
optimal DL Gain.  
8.  Verify UL gain and ensure 
test call produces good 
voice quality and there is 
no interfering BTS 
z Adjust UL gain and perform test calls. Typically, the UL gain is set 
around 5dB less than DL gain. Perform test calls in the coverage 
area while adjusting UL gain if required.  
z Note: If the repeater is near the BTS and the test call performance 
is poor, this may be due to UL noise interference to the BTS. Users 
can calculate and determine if the repeater UL noise will interfere 
with the BTS. 
z Verify again that there is no unacceptable interference to BTS. 
End of Section 

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5 MAINTENANCE 
The RX-8139 repeater is designed for trouble-free operation and generally does not need maintenance. 
Maintenance activities should only be carried out by trained personnel. 
The equipment operation status can be observed remotely through OMC. 
Periodic inspection of the repeater equipment(s) is recommended, the recommended tasks includes: 
z Inspect and record operation status and output power of the repeater from OMC or OMT.  
z Verify the direction and position of antennas. Re-align if necessary. 
z Make sure the cable gland and sealing on the RF cable connectors are not damaged.  
z Verify lightning and grounding protection is in good condition. 
End of Section 

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6 APPENDICES  
6.1 COMMISSIONING PROCEDURES 
The following are the recommended list of tools new installation and routine maintenance: 
•  Slotted screwdriver   
•  Philips screwdriver   
•  Ring spanner  (Assorted size: 12~20mm)  
•  Electrically operated drill and masonry drill bits  ∅10mm 
•  Anti-static wrist strap   
•  Allen key (M5.5) 
• Side cutter 
•  Frequency counter (e.g. FLUKE PM6685R) 
•  RF Power Meter (e.g.  Bird 5000) 
•  T-shaped Pentagon Key Wrench 

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6.2  APPENDIX B: RMA (RETURN MATERIAL AUTHORIZATION) FORM 
End of Section 
End of Document 

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