Comba Telecom MRU-4500 User manual

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MRU
-
4500
USER MANUAL
MRU-4500 5W QE: 1-0-0
Comba Telecom Ltd.

USER MANUAL FOR COMFLEX-5H00 1W2W
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This is an unpublished work the copyright in which vests in Comba International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 ......................................................................................................................4
0.3 HISTORY...........................................................................................................................................................6
0.4 GLOSSARY OF TERMS.......................................................................................................................................7
0.5 SAFETY NOTICES AND ADMONISHMENTS .......................................................................................................8
1GENERAL INFORMATION .............................................................................................................................. 9
2EQUIPMENT DESCRIPTION.......................................................................................................................... 11
2.1 SYSTEM DIAGRAM .........................................................................................................................................11
2.2 TYPICAL APPLICATION ...................................................................................................................................11
2.3 EQUIPMENT CONSTITUTION .........................................................................................................................12
2.4 KIT OF PART ...................................................................................................................................................14
3INSTALLATION ............................................................................................................................................ 16
3.1 WARNINGS AND ALERTS................................................................................................................................16
3.2 SITE PLANNING CONSIDERATIONS ................................................................................................................17
3.3 INSTALLATION PROCEDURES .........................................................................................................................19
3.4 EQUIPMENT CONNECTORS ...........................................................................................................................31
3.5 EQUIPMENT CONNECTION .............................................................................................................................34
4COMMISSIONING ....................................................................................................................................... 39
4.1 PRE-COMMISSIONING TASKS ........................................................................................................................39
4.2 LED INDICATORS ............................................................................................................................................39
4.3 DIGITAL DISPLAY INDICATORS .......................................................................................................................40
4.3.1 DIGITAL DISPLAY ON RFU ..........................................................................................................................40
4.3.2 DIGITAL DISPLAY ON FOU..........................................................................................................................40
5WEB GUI ..................................................................................................................................................... 42
5.1 WEB GUI CONNECTION..................................................................................................................................42
5.2 WEB GUI INTRODUCTION ..............................................................................................................................44
5.2.1 [DEVICES] ..................................................................................................................................................44
5.2.2 [COMMISSIONING] ...................................................................................................................................47
5.2.3 [FIRMWARE] .............................................................................................................................................48
5.2.4 [MANAGEMENT].......................................................................................................................................50
5.3 COMMISSIONING PROCEDURE......................................................................................................................58
6ALARMS AND TROUBLESHOOTING ............................................................................................................. 67
6.1 ALARMS .........................................................................................................................................................67
6.2 TROUBLESHOOTING ......................................................................................................................................68
7APPENDICES ............................................................................................................................................... 69
7.1 APPENDIX A: TOOLS FOR INSTALLATION AND MAINTENANCE ......................................................................69
7.2 APPENDIX B: RMA (RETURN MATERIAL AUTHORIZATION) ............................................................................70

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0.2 INDEX TO FIGURES AND TABLES
Figure 1: Master Unit (MU)........................................................................................................................................9
Figure 2: Remote Unit (RU) and RU PSU.............................................................................................................10
Figure 3: System Diagram.......................................................................................................................................11
Figure 4: SISO Typical Application 1:4..................................................................................................................11
Figure 5: MIMO Typical Application 1:4.................................................................................................................12
Figure 6: ComFlex Master Unit...............................................................................................................................20
Figure 7: RF Unit Installation...................................................................................................................................21
Figure 8: FOU Installation........................................................................................................................................21
Figure 9: PSU Installation........................................................................................................................................21
Figure 10: Redundant PSU Installation .................................................................................................................22
Figure 11: Redundant PSU Connection................................................................................................................22
Figure 12: Optional Li-Battery Unit Installation.....................................................................................................23
Figure 13: Optional Modem Unit Installation.........................................................................................................23
Figure 14: Mounting Rack........................................................................................................................................24
Figure 15: Angle Iron Installation............................................................................................................................24
Figure 16: MU Installation........................................................................................................................................25
Figure 17: Secure the Enclosure............................................................................................................................25
Figure 18: Finish Installaiton ...................................................................................................................................26
Figure 19: Wall Drilling Dimensions of RU (Unit: inch)........................................................................................27
Figure 20: Install Mounting Rack on the Wall......................................................................................................27
Figure 21: Hang RU onto the Mounting Rack.......................................................................................................28
Figure 22: Tighten the Screws at the Bottom of RU............................................................................................28
Figure 23: Finish Installation ...................................................................................................................................29
Figure 24: Remote PSU installed on the right of RU...........................................................................................29
Figure 25: Mounting Rack Installation (Unit: inch)...............................................................................................30
Figure 26: Remote PSU wall mounting .................................................................................................................30
Figure 27: MU Front Panel Connectors.................................................................................................................31
Figure 28: MU Rear Panel Connectors.................................................................................................................31
Figure 29: RU Connectors.......................................................................................................................................32
Figure 30: MU Grounding (MU Rear Panel) .........................................................................................................34
Figure 31: RU Grounding.........................................................................................................................................35
Figure 32: Fiber Optical and RF Port Connection................................................................................................35
Figure 33: MU Power Connection (Rear Panel)...................................................................................................36
Figure 34: RU Fiber Optical and RF Port Connection........................................................................................36
Figure 35: Remote PSU Connction.......................................................................................................................37
Figure 36: Pins Allocation for “EXT_ALM” Port for RU ......................................................................................37
Figure 37: Pins Allocation for “BTS_ALM” Port ....................................................................................................38
Figure 38: RFU Digital Display................................................................................................................................40
Figure 39: Optical Port No. and Digital Display....................................................................................................41
Figure 40: PC IP Address obtain automatically....................................................................................................42
Figure 41: PC IP Address Setting...........................................................................................................................42
Figure 42: Input IP Address.....................................................................................................................................43
Figure 43: Input User Name and Password..........................................................................................................43
Figure 44: Web GUI Main Screen ..........................................................................................................................44
Figure 45: [Devices] Screen....................................................................................................................................44
Figure 46: MU Device - Monitoring Unit ................................................................................................................45
Figure 47: MU Device - Optical Unit.......................................................................................................................45
Figure 48: MU Device - RF Unit..............................................................................................................................46
Figure 49: RU Device...............................................................................................................................................46
Figure 50: RU Device –850MHz............................................................................................................................47
Figure 51: [Commissioning] Screen.......................................................................................................................47
Figure 52: [Firmware] Screen - Upgade................................................................................................................48
Figure 53: [Firmware] Screen –Pop-up Window 1..............................................................................................48

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Figure 54: [Firmware] Screen –Pop-up Window 2..............................................................................................49
Figure 55: [Firmware] Screen - Swap....................................................................................................................49
Figure 56: [Firmware] Screen –Module upgrade ................................................................................................50
Figure 57: [Management] Screen...........................................................................................................................50
Figure 58: Management –Import&Export.............................................................................................................51
Figure 59: Management –IP Setting.....................................................................................................................52
Figure 60: Management –SMS Setting ................................................................................................................52
Figure 61: Management –Maintenance................................................................................................................53
Figure 62: Management –Security........................................................................................................................53
Figure 63: Modify Password....................................................................................................................................54
Figure 64: Management –Device Reset...............................................................................................................54
Figure 65: Management –PA Reset......................................................................................................................55
Figure 66: Management –Device Info...................................................................................................................55
Figure 67: Management –Device Scanning.........................................................................................................56
Figure 68: Management –Device Remove ..........................................................................................................56
Figure 69: Management –Report...........................................................................................................................57
Figure 70: Management –License.........................................................................................................................57
Figure 71: Management –Alarm Log ....................................................................................................................58
Figure 72: Commissioning Procedure - Start........................................................................................................58
Figure 73: Commissioning Procedure –Device Scan.........................................................................................59
Figure 74: Commissioning Procedure –Params Setting....................................................................................59
Figure 75: Dev Info & Date/Time............................................................................................................................60
Figure 76: Flow to select..........................................................................................................................................60
Figure 77: Calibration screen..................................................................................................................................61
Figure 78: Commissioning Procedure –Automatic Calibration .........................................................................62
Figure 79: Commissioning Procedure –Manual Calibration..............................................................................62
Figure 80: Commissioning Procedure –Calibration Finish .................................................................................63
Figure 81: Commissioning Procedure –MU Setup .............................................................................................63
Figure 82: MU Frequency Band Table...................................................................................................................64
Figure 83: Commissioning Procedure –RU Setup..............................................................................................65
Figure 84: RU Frequency Band Table...................................................................................................................65
Table 1: MU Components........................................................................................................................................12
Table 2: RU Components........................................................................................................................................13
Table 3: Master Unit (MU) KOP..............................................................................................................................14
Table 4: Remote Unit (RU) KOP ............................................................................................................................15
Table 5: MU Connections........................................................................................................................................32
Table 6: RU Connections.........................................................................................................................................33
Table 7: Pin Definition of “EXT_ALM” Port for RU ...............................................................................................37
Table 8: Pin Definition of “BTS_ALM” Port............................................................................................................38
Table 9: MU LED Indications ..................................................................................................................................39
Table 10: RU LED Indications.................................................................................................................................39
Table 11: RFU Digital Display.................................................................................................................................40
Table 12: FOU Digital Display.................................................................................................................................41
Table 13: Import/Export Parameters......................................................................................................................51
Table 14: MU Alarm List ..........................................................................................................................................67
Table 15: RU Alarm List...........................................................................................................................................67
Table 16: MU Alarms Diagnosis.............................................................................................................................68
Table 17: RU Alarms Diagnosis..............................................................................................................................68

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0.3 HISTORY
Change No.
ENU
Details Of Change
1
1-0-0
This user manual first created in Oct 2014 which referred to its
Chinese manual MRU01-4500-1001YH.

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0.4 GLOSSARY OF TERMS
ALC
Automatic Level Control
ATT
Attenuation
BDA
Bi-direction Amplifier
BS
Base Station
BTS
Base Transceiver Station
DL
Downlink
DT
Donor Terminal
FOU
Fiber Optical Unit
GUI
Graphic User Interface
ID
Identification
LNA
Low Noise Amplifier
MCU
Main Control Unit
MT
Mobile Terminal
MTBF
Mean Time Between Failures
MU
Master Unit
NC
Normally Closed
NF
Noise Figure
NO
Normally Open
OMC
Operation & Maintenance Center
OMT
Operation & Maintenance Terminal
WebOMT
Web Operation & Maintenance Terminal
OP
Optical Fiber
OPEX
Operating Expense
PA
Power Amplifier
POI
Point of Interconnects
PSU
Power Supply Unit
RF
Radio Frequency
RFU
Radio Frequency Unit
RU
Remote Unit
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
LTE
(3G)Long Term Evolution

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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 ComFlex-4500 Medium Power Distributed Antenna System (hereinafter called “ComFlex-4500”)
consists of Master Unit (MU) and Remote Unit (RU). The MU includes the MU Chassis, Power Supply
Unit (PSU), Fiber Optical Unit (FOU) and RF Unit (RFU). With a modular design, it can support up to 8
independent RF inputs and 8 Remote Units. The Remote Unit is designed with a compact and slim form
factor for easy installation; it is an integrated design and the power supply (LRU01-PSU) is separate from
RU.
The low signal transmission loss of optical fiber is applicable for long distance transmission. ComFlex-
4500 can support the optical transmission of up to 6.5dBo optical loss, equivalent to 8 miles fiber length.
Main feature:
Independent coupling port for uninterrupted network testing.
Modularized Master Unit supports flexible field upgrade and maintenance.
Independent gain control for each RF source.
High MTBF and low noise design with modular PSU and convection cooling.
RF module supports both simplex and duplex.
Compact slim Remote Unit for OPEX saving.
Supports multi-operator and mix mode application.
Optical link auto gain control.
Web based GUI for intelligent commissioning and configuration.
The figures below show the ComFlex Master and Remote unit enclosure.
Figure 1: Master Unit (MU)

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Figure 2: Remote Unit (RU) and RU PSU
End of Section

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2 EQUIPMENT DESCRIPTION
2.1 SYSTEM DIAGRAM
Optical Fiber
MU Antenna
RU
Figure 3: System Diagram
On the DL, signals from the BTSs or BDA are 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 ANT
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.
2.2 TYPICAL APPLICATION
Shown below are the typical SISO and MIMO applications of MU and RUs.
ANT
ANT
ANT
ANT
1800MHz 2100MHz 2600MHz850MHz
Figure 4: SISO Typical Application 1:4

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1800MHz
850MHz 1800MHz
850MHz
ANT ANT ANT ANT
ANT ANT ANT ANT
2600MHz
2100MHz 2600MHz
2100MHz
Figure 5: MIMO Typical Application 1:4
2.3 EQUIPMENT CONSTITUTION
MU consists of the following parts:
Table 1: MU Components
Module
Description
MU01-RACK-E02
Master Unit Chassis includes eight slots for RF Unit, two slots for Fiber Optical
Unit, and one slot for Power Supply Unit.
MU01-PSU-
A92E01
Master Unit Power Supply Unit (PSU) converts the input voltage into stable DC
to supply power for other modules of Master Unit.
MU01-FOU-
SABFOP6
Master Unit Fiber Optical Unit (FOU) completes optical signal and RF signal
conversion. One FOU has four optical ports, which means each FOU can
support up to four RUs.
MU01-RFU
Master Unit RF Unit (RFU) completes separation and combination of uplink and
downlink signal with independent gain control, supports either simplex or
duplex.
MU01-FOU-LD
Master Unit Fiber Opticla Dummy Load Unit completes matching with output
ports and be used in vacant FOU slot.
MU01-RFU-LD
Master Unit Fiber Opticla Dummy Load Unit completes matching with output
ports and be used in vacant RFU slot.
MU01-BAT-E01
Master Unit Li-Battery Unit is an optional unit in rear panel, and completes
power supply in short time.
MU01-MOD-M20
Master Unit Modem Unit is an optional unit in rear panel, and it’s WCDMA
modem.
MU01-PSU-
A92W300,S1
Master Unit Power Supply Unit is a redundant AC power supply unit on rear
panel, it’s 300W consumption.

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RU consists of the following part: Table 2: RU Components
Module
Description
MRU01-4500
Remote Unit; A compact and slim design which supports 4 bands, including
850MHz, 1800MHz, 2100MHz and 2600MHz bands.
LRU01-PSU-
A92W300
Remote Power Supply Unit, can be installed on the RU or be installed separately
on the wall nearby RU.

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2.4 KIT OF PART
Table 3: Master Unit (MU) KOP
Item
Qty
Image
MU Chassis
1
RF Unit (RFU)
1~8
Fiber Optical Unit (FOU)
1~2
FOU Dummy Load
0~1
RFU Dummy Load
0~6
Power Supply Unit (PSU)
1
Power Supply Cable
(13 Feet 1 inch)
1
Communication Cable
1
Right Angle Bracket
(for MU 19“rack mounting)
1
Left Angle Bracket
(for MU 19“ rack mounting)
1

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Table 4: Remote Unit (RU) KOP
Item
Qty
Image
Remote Unit
1
Remote Power Supply Unit
1
Mounting Rack
(for RU wall mounting)
1
Masonry Bolt (set) M8x80
( for RU concrete wall mounting)
4
Masonry Bolt (set) M8x80
( for RU PSU concrete wall mounting )
2
Nuts M10x25, Spring Washers Φ10,
Plain Washers Φ10
(RU and RU PSU grounding calbe
installed)
4 pieces each
Nuts M6x10, Spring Washers Φ6,
Plain Washers Φ6
(RU PSU installed on RU)
2 pieces each
Grounding Cable
2
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 practicable danger, as far as reasonably
possible. Any work activity on or near equipment involving installation, operation or maintenance must be
free from danger, as far as reasonably possible.
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 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
3.2.1SITE PLANNING
Site Considerations
The MU is designed to be located indoors to facilitate coupling of BTS signals and power supply
connections. The input range of MU RF unit is 10~30 dBm.
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 8 miles, with a maximum path loss of 6.5dB.
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.
3.2.2SYSTEM 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. (2m; 6 ft. 10 in.).
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
3.3.1GOODS INWARDS INSPECTION
ComFlex 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.
3.3.2TOOLS
See Appendix A for a full list of tools required for installation and maintenance.
3.3.3PREPARATION
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 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. (1.2”)
3.3.4MU ASSEMBLING
ComFlex Master Unit consists of 7 parts: Rack, RFU, FOU, PSU, Redundant PSU, Optional Modem Unit
and Optional Li-Battery Unit. All the units are packed separately. Follow the steps below to assemble.

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Figure 6: ComFlex Master Unit
Step 1: RF Unit installation: Remove RFU slot cover plate on Chassis, insert RFU and fasten the screws.
(Each Unit can be installed in any one of eight RFU slots)
Power Supply Unit
Fiber Optical Unit
RF Unit
Redundant
Power Supply
Unit
Optional Li-Battery Unit
Optional Modem Unit
Rack