Comba Telecom RA-7E00 User manual

D
DU UA AL L- -B BA AN ND D D DI IS ST TR RI IB BU UT TE ED D
A
AN NT TE EN NN NA A S SY YS ST TE EM M
USER MANUAL
RA-7E00 III3 BR QE: 1-0-1
Comba Telecom Ltd.
RA-7E00

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This is an unpublished work the copyright in which vests in Comba International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

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0.1 CONTENTS
Section
Page
0.1 CONTENTS...........................................................................................................................3
0.2 INDEX TO FIGURES AND TABLES.....................................................................................5
0.3 HISTORY...............................................................................................................................7
0.4 GLOSSARY OF TERMS .......................................................................................................8
0.5 SAFETY NOTICES AND ADMONISHMENTS......................................................................9
1GENERAL INFORMATION .................................................................................................10
2EQUIPMENT DESCRIPTION..............................................................................................13
2.1 SYSTEM DIAGRAM............................................................................................................13
2.2 TYPICAL APPLICATION.....................................................................................................14
2.3 MASTER UNIT ASSEMBLY................................................................................................14
2.4 EQUIPMENT INTERNAL LAYOUT DIAGRAM...................................................................15
2.5 EQUIPMENT CONSTITUTION...........................................................................................16
2.6 KIT OF PART.......................................................................................................................16
3INSTALLATION...................................................................................................................17
3.1 WARNINGS AND ALERTS.................................................................................................17
3.2 SITE PLANNING CONSIDERATIONS................................................................................18
3.2.1 SITE PLANNING .................................................................................................................18
3.2.2 SYSTEM INSTALLATION CHECKLIST..............................................................................19
3.3 INSTALLATION PROCEDURES.........................................................................................20
3.3.1 GOODS INWARDS INSPECTION......................................................................................20
3.3.2 TOOLS.................................................................................................................................20
3.3.3 PREPARATION...................................................................................................................20
3.3.4 MU CARBINET MOUNTING ...............................................................................................20
3.3.5 MU Installation.....................................................................................................................21
3.3.6 WALL MOUNTING OF RU..................................................................................................24
3.3.7 POLE MOUNTING OF RU ..................................................................................................25
3.3.8 DRIP-LOOP.........................................................................................................................26
3.4 EQUIPMENT CONNECTORS.............................................................................................27
3.5 EQUIPMENT CONNECTION..............................................................................................29
3.5.1 GROUNDING CONNECTION.............................................................................................29
3.5.2 MU CONNECTION..............................................................................................................29
3.5.2.1. MU connects with BTS ........................................................................................................29
3.5.2.2. MU connects with fibre optic distribution box.......................................................................30
3.5.3 BTS ALARM CONNECTION...............................................................................................30
3.5.4 CONNECT TO PC...............................................................................................................31
4COMMISSIONING...............................................................................................................32
4.1 PRE-COMMISSIONING TASKS .........................................................................................32
4.2 LED INDICATORS...............................................................................................................32
5OMT.....................................................................................................................................33
5.1 LOCAL CONNECTIONS TO OMT......................................................................................33
5.1.1 CONNECTION FROM PC TO OMT....................................................................................33
5.1.2 LOCAL CONNECTION TO OMT.........................................................................................34
5.2 RF INFORMATION..............................................................................................................35
5.3 ALARM INFORMATION......................................................................................................39

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5.4 PROPERTIES INFORMATION ...........................................................................................41
6TROUBLESHOOTING ........................................................................................................46
7APPENDICES......................................................................................................................47
7.1 APPENDIX A: TOOLS FOR INSTALLATION AND MAINTENANCE..................................47
7.2 APPENDIX B: RMA (RETURN MATERIAL AUTHORIZATION) FORM .............................48

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0.2 INDEX TO FIGURES AND TABLES
Figure 1: MU Enclosure ...........................................................................................................................................11
Figure 2: Optical unit Enclosure..............................................................................................................................11
Figure 3: Duplexer Unit Enclosure..........................................................................................................................11
Figure 4: Front, Side and Bottom Views of RU Enclosure..................................................................................12
Figure 5: System Diagram.......................................................................................................................................13
Figure 6: Application of one MU with 8 RUs..........................................................................................................14
Figure 7: MU Modular Design .................................................................................................................................14
Figure 8: RU Layout Diagram..................................................................................................................................15
Figure 9: MU Carbinet Mounting.............................................................................................................................20
Figure 10: Mounting Rack........................................................................................................................................21
Figure 11: Angle Iron or Laminate Installation......................................................................................................21
Figure 12: MU Installation........................................................................................................................................22
Figure 13: Fix the Enclosure....................................................................................................................................22
Figure 14: Finish Installaiton....................................................................................................................................23
Figure 15: Wall Mounting of RU.............................................................................................................................24
Figure 16: Mounting rack diagram.........................................................................................................................25
Figure 17: Hose Clamp Diagram............................................................................................................................25
Figure 18: Hose Clamp Diagram............................................................................................................................26
Figure 19: MU Front Panel Connectors.................................................................................................................27
Figure 20: Rear Panel Connectors (AC 110~220V in).........................................................................................27
Figure 21: MU Rear Panel Connectors (DC-48V in)............................................................................................27
Figure 22: RU Connectors.......................................................................................................................................28
Figure 23: MU connect with BTS............................................................................................................................29
Figure 24: Fibre Optic Port Connection Diagram .................................................................................................30
Figure 25: Pins Allocation for “BTS_ALM” Port ....................................................................................................30
Figure 26: PC Protocol Setting................................................................................................................................33
Figure 27: Connection Type ....................................................................................................................................34
Figure 28: Connection via Ethernet........................................................................................................................35
Figure 29: MU Switch...............................................................................................................................................35
Figure 30: RU Switch................................................................................................................................................36
Figure 31: MU Alarm Threshold..............................................................................................................................36
Figure 32: RU Alarm Threshold..............................................................................................................................36
Figure 33: MU Power................................................................................................................................................37
Figure 34: RU Power................................................................................................................................................37
Figure 35: MU Gain...................................................................................................................................................37
Figure 36: RU Gain...................................................................................................................................................38
Figure 37: MU Temperature....................................................................................................................................38
Figure 38: RU Temperature.....................................................................................................................................38
Figure 39: MU Freq Band Config............................................................................................................................39
Figure 40: RU Freq Band Config............................................................................................................................39
Figure 41: MU Master Alarm...................................................................................................................................40
Figure 42: RU Master Alarm....................................................................................................................................40
Figure 43: MU Channel Alarm.................................................................................................................................40
Figure 44: RU Channel Alarm.................................................................................................................................41
Figure 45: MU Equipment ID...................................................................................................................................41
Figure 46: RU Equipment ID...................................................................................................................................42
Figure 47: MU Firmware Info...................................................................................................................................42
Figure 48: RU Firmware Info...................................................................................................................................42
Figure 49: MU Equipment Info................................................................................................................................43
Figure 50: RU Equipment Info.................................................................................................................................43
Figure 51: MU Site Location....................................................................................................................................43
Figure 52: RU Site Location.....................................................................................................................................44
Figure 53: MU System Clock...................................................................................................................................44

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Figure 54: RU System Clock...................................................................................................................................44
Figure 55: MU Comm. Config.................................................................................................................................45
Figure 56: RU Comm. Config..................................................................................................................................45
Table 1: MU Dimension............................................................................................................................................10
Table 2: RU Constitution..........................................................................................................................................16
Table 3: MU KOP.....................................................................................................................................................16
Table 4: RU KOP.....................................................................................................................................................16
Table 5: MU Connections ........................................................................................................................................27
Table 6: RU Connections.........................................................................................................................................28
Table 7: Pin Definition of “BTS_ALM” Port............................................................................................................31
Table 8: MU LED Indicators ....................................................................................................................................32
Table 9: RU LED Indicators.....................................................................................................................................32
Table 10: IP Setting Quick Look-up Table.............................................................................................................35
Table 11: Comm. Config. Parameter.....................................................................................................................45
Table 12: Alarms Diagnosis.....................................................................................................................................46

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0.3HISTORY
Change No.
ENU
Details Of Change
1
1-0-0
This user manual first created in Oct 2012 which referred to its
Chinese manual RA-7E002-1001YH.
2
1-0-1
Update MU enclosure and OMT screenshot in Nov 2012.

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0.4 GLOSSARY OF TERMS
ALC
Automatic Level Control
ATT
Attenuation
BS
Base Station
BTS
Base Transceiver Station
dB
Decibel
dBm
Decibels relative to 1 milliwatt
DL
Downlink
DPX
Duplexer
DT
Donor Terminal
EEPROM
Electrically Erasable Programmable Read Only Memory
E/O,O/E
Electrical/Optical, Optical/Electrical
Hz
Hertz
ID
Identification
LNA
Low Noise Amplifier
MCU
Main Control Unit
MHz
Megahertz
MT
Mobile Terminal
MTBF
Mean Time Between Failures
NC
Normally Closed
NF
Noise Figure
NO
Normally Open
OMC
Operation & Maintenance Center
OMT
Operation & Maintenance Terminal
OP
Optical Fiber
PA
Power Amplifier
PLL
Phase Locked Loop
POI
Point of Interconnects
PSU
Power Supply Unit
RF
Radio Frequency
RX
Receive
SMA
Sub-Miniature “A” Connector
TX/RX
Transmit/Receive
UL
Uplink
VAC
Volts Alternating Current
VSWR
Voltage Standing Wave Ratio
WCDMA
Wideband Code Division Multiple Access

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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.
End of Section

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1 GENERAL INFORMATION
The RA-7E00 Dual-band Distributed Antenna System (hereinafter called “RA-7E00”) consists of Master
Unit (MU) and Remote Unit (RU). MU is made up of main unit, duplexer unit and optical unit. The system
supports 800MHz and 1900MHz, suitable for iDEN, GSM, WCDMA signal coverage. It‟s advanced
monitoring function helps users remotely monitor and control the device parameter and status inquery
through Ethernet, at the same time, users can also locally configure the device through PC.
The low signal transmission loss of optical fiber is applicable for long distance transmission. RA-7E00 can
support the optical transmission of up to 10dB signal transmission loss.
Main feature:
Broad band optics system, system bandwidth is 15MHz for 800 band, 5MHz for 1900 band.
Optical fiber transmission with long distance transition at the most path loss of 10dB.
Has AGC function, automatic compensates path loss.
Local Operation and Maintenance Terminal (OMT): operating status and parameters can be set or
monitored by OMT PC locally. And the point-to-point setting and inquiry between MU and RU is
realizable through the integrated wireline/wireless modem, which makes it convenient for on-site
configuration.
Operation Maintenance Center (OMC): real time monitor, set and inquire device status information.
Build-in Li-ion battery ensures that alarm information can automatically report to OMC in case of
equipment power failure.
RU is designed for all-weather outdoor operation - waterproof, damp-proof and omni-sealed.
A dimension for MU is shown in table bellowed.
Table 1: MU Dimension
Item
LxWxH
Main Unit
330 ×439×177
Duplexer Unit
129×88×50
Optical Unit
164×49×26

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The figures below show the equipment enclosure layout of RA-7E00:
PWR RUN ALM
MODEM BTS_ALM LAN
OP OP OP
OP OP OP
Comba
1900MHz
OP
OP
800MHz
Figure 1: MU Enclosure
Figure 2: Optical unit Enclosure
Figure 3: Duplexer Unit Enclosure

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RUN
PWR
OP
ALM
OMTOP
ANT
AC 110V-240V
5 0/60Hz
175
250
740
Figure 4: Front, Side and Bottom Views of RU Enclosure
End of Section

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2 EQUIPMENT DESCRIPTION
2.1 SYSTEM DIAGRAM
Optical Fiber
MU
Distributed
Antenna
System
RU
Figure 5: System Diagram
On the DL, signals from the BTSs converted into optical signals after amplification in the MU.Then the
optical signals are transmitted to the RU via optical fiber. The Optical TX/RX Module of RU converts the
DL optical signals into RF signals. After amplification, the signals are transmitted at the MT port to the
service antenna.
On the UL, the signals transmitted by the mobile are converted into optical signals, and then via the UL
optical fiber. The signals are transmitted to MU, which then converts the optical signals back to RF
signals.

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2.2 TYPICAL APPLICATION
Shown below is a typical application of one MU hosts 8 RUs.
RU
ANT
BTS MU
OP IN/OUT
RU
OP
ANT
OP_A
OP_A
OP_A
OP_A
OP_A
OP IN/OUT
OP
1900MHz TX/RX
ANT
ANT
OP_A
OP_A
OP_A
RU
OP
RU
OP
RU
OP
ANT
ANT
ANT
RU
OP
RU
OP
RU
OP
OP IN/OUT
OP IN/OUT
OP IN/OUT
ANT
ANT
ANT
ANT
ANT
ANT
OP IN/OUT
OP IN/OUT
OP IN/OUT
800MHz TX/RX
Figure 6: Application of one MU with 8 RUs
2.3 MASTER UNIT ASSEMBLY
RA-7E00 MU is modular design. Below figure shows the assembly of MU.
PWR RUN ALM
MODEM BTS_ALM LAN
OP_A OP_A OP_A
OP_A OP_A OP_A
Comba
Optical Unit
OP_A
OP_A
Main Unit Duplexer Unit
1900MHz 800MHz
Figure 7: MU Modular Design

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2.4 EQUIPMENT INTERNAL LAYOUT DIAGRAM
The internal layout for RU is shown below:
RX1 RX2 TX2 TX1
Li-ion Battery
GND
IN OK
OUT OK
28V+ JK+
BAT2+ BAT2-
JK-
9V+ 9V-
28V-
Optical TX/RX Module
800MHz LNA
1900MHz LNA
800MHz PA
1900MHz PA
MCU PSU
Arrestor
Combiner
Figure 8: RU Layout Diagram

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2.5 EQUIPMENT CONSTITUTION
RU consists of the following conponents:
Table 2: RU Constitution
Identifier
Function Discription
Power Supply Unit
(PSU)
Converts the input voltage into stable DC to supply power for other modules.
Optical TX/RX Module
Completes optical signal and RF signal convertion, establish fiber-optic
signal link
PA Module
Amplifies the DL signal.
LNA Module
Amplifies the UL signal, has low noise feature.
Duplexer
Filters out the DL/UL signal
MCU
Control and monitor the operation parameter of RU
Li-ion Battery
Provide power supply to MCU after power failure.
2.6 KIT OF PART
Table 3: MU KOP
Identifier
Function Discription
Qty
Power Cable
4m
1
Ethernet Cable
RJ45, 2m
1
Right Angle Iron
RA-0100DE05-5825
1
Left Angle Iron
RA-0100DE05-5826
1
Table 4: RU KOP
Identifier
Function Discription
Qty
Power Cable
1
Masonry Bolt
M10×110
4
Hex Nut
M10
4
Key
2
Hose Clamps
Φ60-Φ260
2
Mounting rack
2
Plain Washer
Φ10
4
Spring Washer
Φ10
4
Fiber Adapter
DLC-06T-LJ
1
GND Wire
BVR10mm2,2m
1
End of Section

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3 INSTALLATION
3.1 WARNINGS AND ALERTS
Laser
Laser light can cause damage to eyes. Laser light is not visible. Viewing it directly does not cause pain.
The iris of the eye will not close when viewing a bright light. Consequently, serious damage to the retina of
the eye is possible. NEVER LOOK INTO THE END OF A FIBER WHICH MAY HAVE A LASER
COUPLED TO IT.
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
3.2.1 SITE PLANNING
Site Considerations
The MU can be located indoors to facilitate coupling of BTS signals and power supply connections. The
ALC range of received BTS signal is -10~10 dBm. Hence, an appropriate coupler must be used according
to the BTS output power.
The site consideration for RU is listed below:
The distance between the service antenna of RU and coverage area should satisfy line of sight
requirements for maximum coverage area.
The maximum fiber length is 20km, with a maximum path loss of 10dB.
The system delay of the optical system must be taken into consideration when there are neighboring
BTS sites overlapping in coverage.
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 system should be well ventilated. The equipment has been designed to
operate at the temperature range and humidity level as stated in the product specifications.
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 AC 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 connected to the MU and RU:
coaxial cables, optical fibers, power cable, communication cable, and commissioning cable. Where
applicable, ensure cables are properly routed and secured so that they are not damaged.

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Manual Handling
During transportation and installation, take necessary handling precautions to avoid potential physical
injury to the installation personnel and the equipment.
3.2.2 SYSTEM 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.
Where appropriate, ensure unused RF connectors are terminated.
Where appropriate, ensure unused optical fiber connectors are protected.
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 the equipment will be operated within the stated environment (refer to datasheet).
Where needed, couple BTS RF signal with a coupler to prevent damaging the equipment.
Where appropriate, confirm available of suitably terminated grade of RF and optical fiber.
Observe handling of all cables to prevent damage.

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3.3 INSTALLATION PROCEDURES
3.3.1 GOODS INWARDS INSPECTION
RA-7E00 was factory tested, inspected, packed, and delivered to the carrier with utmost care. Do not
accept shipment from carrier which shows damage or shortage until the carrier's agent endorses a
statement of the irregularity on the face of the carrier's receipt. Without documentary evidence, a claim
cannot be processed.
Open and check each package against the packing list. For any shortage, contact Comba Telecom
Systems. Do not remove items from packing materials until installation.
3.3.2 TOOLS
See Appendix B for a full list of tools required for installation and maintenance.
3.3.3 PREPARATION
Optical Fiber:
Fiber optic cables require proper handling. Do not stretch, puncture, or crush the fiber cable(s) with
staples, heavy equipment, doors, etc.
Always maintain the minimum bending radius specified by the cable manufacturer. The minimum
bend radius is usually 10 times as the cable's outer diameter. In the case of single optical fiber that is
not in a cable, the minimum bending radius to be observed is 3cm.
3.3.4 MU CARBINET MOUNTING
Figure 9: MU Carbinet Mounting