csr installation guide

INSTALLATION GUIDE FOR SR-9120

SR-9120 III4 QI Copyright - refer to title page ENU Status : 1-0-0

The information contained herein is the responsibility of and is approved by the following, to whom all enquiries should be directed in the first instance:

Comba Telecom

SR-9120

GSM 900MHZ BANDWIDTH ADJUSTABLE REPEATER

INSTALLATION GUIDE

This is an unpublished work the copyright in which vests in Comba International ("Comba"). All rights reserved. The information contained herein is confidential and the property of Comba and is supplied without liability for errors or omissions. No part may be reproduced, disclosed or used except as authorized 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.



0.2 CONTENTS

Section Page

0.2 CONTENTS...........................................................................................................................2 0.3 INDEX TO FIGURES AND TABLES .....................................................................................4 0.4 HISTORY...............................................................................................................................5 0.5 GLOSSARY OF TERMS .......................................................................................................6 0.6 SAFETY NOTICES AND ADMONISHMENTS......................................................................7

1 SR-9120 REPEATER INTRODUCTION ...............................................................................8

2 EQUIPMENT DESCRIPTION..............................................................................................10 2.1 SR-9120 FUNCTIONAL BLOCK DIAGRAM .......................................................................10 2.2 GENERAL APPLICATIONS ................................................................................................11 2.3 EQUIPMENT LAYOUT........................................................................................................12 2.4 EQUIPMENT CONSTITUTION ...........................................................................................12

3 INSTALLATION ...................................................................................................................14 3.1 WARNINGS AND ALERTS .................................................................................................14 3.2 SITE PLANNING CONSIDERATIONS................................................................................15 3.2.1 INSTALLATION CHECKLIST..............................................................................................16 3.2.2 ANTENNA INSTALLATION CHECKLIST ...........................................................................16 3.2.3 PREPARATIONS ................................................................................................................16 3.3 INSTALLATION PROCEDURES ........................................................................................17 3.3.1 GOODS INWARDS INSPECTION ......................................................................................17 3.3.2 TOOLS.................................................................................................................................17 3.3.3 MOUNTING RACK..............................................................................................................17 3.3.4 WALL MOUNTING DETAILS ..............................................................................................18 3.3.5 POLE MOUNTING DETAILS ..............................................................................................19 3.3.6 DRIP-LOOP.........................................................................................................................19 3.4 EQUIPMENT CONNECTORS ............................................................................................20 3.5 EQUIPMENT CONNECTIONS ...........................................................................................21 3.5.1 GROUNDING CONNECTION.............................................................................................21 3.5.2 SERVICE VOLTAGE CONNECTION .................................................................................21 3.5.3 LI-ION BATTERY CONNECTION .......................................................................................21 3.5.4 RF CABLE CONNECTION..................................................................................................21 3.5.5 PHYSICAL CONNECTION TO OMT PC ............................................................................22 3.5.6 EXTERNAL ALARM CONNECTION...................................................................................22 3.5.7 PHYSICAL CONNECTION BETWEEN MASTER UNIT AND SLAVE UNIT ......................22 3.6 PREPARATION FOR REMOTE CONTROL OF EQUIPMENT USING WIRELESS

MODEM...............................................................................................................................24

4 COMMISSIONING...............................................................................................................25 4.1 PRE-COMMISSIONING TASKS .........................................................................................25 4.2 EQUIPMENT LED INDICATORS........................................................................................25 4.3 CONNECTION OF THE OMT TO EQUIPMENT ................................................................26 4.4 OMT.....................................................................................................................................26 4.5 LOCAL AND REMOTE COMMISSIONING.........................................................................27 4.5.1 LOCAL CONNECTION TO OMT ........................................................................................27 4.5.2 REMOTE CONNECTION TO OMT.....................................................................................27 4.6 OMT CONFIGURATION .....................................................................................................28 4.7 RF PARAMETER ................................................................................................................28 4.7.1 SWITCH...............................................................................................................................28 4.7.2 CHANNEL NO. ....................................................................................................................29 4.7.3 ATT ......................................................................................................................................29 4.7.4 ALARM THRESHOLD.........................................................................................................30



4.7.5 ALARM INFORMATION......................................................................................................30 4.8 PROPERTIES INFO............................................................................................................32 4.8.1 EQUIPMENT ID...................................................................................................................32 4.8.2 COMM. CONFIG .................................................................................................................32 4.9 COMMISSIONING PROCEDURES....................................................................................34

5 MAINTENANCE ..................................................................................................................35

6 APPENDICES......................................................................................................................36 6.1 APPENDIX A: TOOLS FOR INSTALLATION AND MAINTENANCE .................................36 6.2 APPENDIX B: SERVICING POLICY AND RETURN OF EQUIPMENT .............................37 6.3 APPENDIX C: RMA (RETURN MATERIAL AUTHORIZATION) FORM.............................38



0.3 INDEX TO FIGURES AND TABLES

Figure 1: Front, Side and Bottom Views of SR-9120 Enclosure.................................................................. 9 Figure 2: SR-9120 Functional Block Diagram ........................................................................................... 10 Figure 3: Centralized Remote Control and Monitoring .............................................................................. 11 Figure 4: Centralized Local Control and Monitoring .................................................................................. 11 Figure 5: Layout of SR-9120...................................................................................................................... 12 Figure 6: Wall Mounting Rearview............................................................................................................. 17 Figure 7: Wall Mounting Overview............................................................................................................. 18 Figure 8: Pole Mounting Overview............................................................................................................. 19 Figure 9: Equipment Connectors ............................................................................................................... 20 Figure 10: Local Connection to OMT PC................................................................................................... 22 Figure 11: Pins Allocation for EXT_ALM Connector.................................................................................. 22 Figure 12: Centralized Control and Commissioning of SR-9120............................................................... 23 Figure 13: Wireless Modem....................................................................................................................... 24 Figure 14: Connection Type....................................................................................................................... 27 Figure 15: Serial Port Configuration........................................................................................................... 27 Figure 16: Remote Connection .................................................................................................................. 27 Figure 17: OMT Main Window ................................................................................................................... 28 Figure 18: Switch ....................................................................................................................................... 28 Figure 19: Channel No............................................................................................................................... 29 Figure 20: Frequency Calculator................................................................................................................ 29 Figure 21: ATT ........................................................................................................................................... 29 Figure 22: Alarm Threshold ....................................................................................................................... 30 Figure 23: Master Alarm ............................................................................................................................ 30 Figure 24: External Alarm .......................................................................................................................... 31 Figure 25: Equipment ID ............................................................................................................................ 32 Figure 26: Com. Config. ............................................................................................................................. 32

Table 1: SR-9120 Components ................................................................................................................. 13 Table 2: Installation Checklist .................................................................................................................... 16 Table 3: Antenna Installation Checklist...................................................................................................... 16 Table 4: Preparation Checklist................................................................................................................... 16 Table 5: SR-9120 Connectors ................................................................................................................... 20 Table 6: Distribution Board LEDs............................................................................................................... 25 Table 7: Commissioning Procedures......................................................................................................... 34



0.4 HISTORY

Change No. ENU Details Of Change

1 1-0-0 First created on 23Jul 2009 and referred to both Chinese version sr-91203-1001yh and SR-1820 QI 1-0-1.



0.5 GLOSSARY OF TERMS

Abbreviation Definition ALC Automatic Level Control ATT Attenuator BTS Base Transceiver Station CH Channel CSA Cross Sectional Area dB Decibel dBm Decibels relative to 1 milliwatt DL Downlink DT Donor Terminal DPX Duplexer FS Frequency Selection FSA Frequency Selection Amplifier GSM Global Standard for Mobile Communication Hz Hertz ID Identification IF Intermediate Frequency LNA Low Noise Amplifier LOS Line-of-Sight MCU Main Control Unit MHz Megahertz MTBF Mean Time Between Failures NF Noise Figure OMC Operation & Maintenance Center OMT Operation & Maintenance Terminal PA Power Amplifier PLL Phase Locked Loop PSU Power Supply Unit RF Radio Frequency SIM Subscriber Identification Module SMA Sub-Miniature A Connector SMS Short Message Service UL Uplink VAC Volts Alternating Current VDC Volts Direct Current VSWR Voltage Standing Wave Ratio



0.6 SAFETY NOTICES AND ADMONISHMENTS

This document contains safety notices in accordance with appropriate standards. In the interests of conformity with the territory standards for the country concerned, the equivalent territorial admonishments are also shown. Any installation, adjustment, maintenance and repair of the equipment must only be carried out by trained, 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 Notices: These draw the attention of personnel to hazards that may cause death or injury to the operator or others. Examples of use are cases of high voltage, laser emission, toxic substances, point of high temperature, etc. Alert Notices: 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



1 SR-9120 REPEATER INTRODUCTION

The SR-9120 GSM900 Bandwidth Adjustable Repeater is used in indoor locations where small-scale signal coverage for city structures is desired (e.g., hotels, department stores and shopping malls, underground parking lots and tunnels, convention centers, arenas, airports, etc.) The SR-9120 is designed for indoor operation in the GSM900 band. The system gain is compensated automatically according to the temperature variation within the enclosure, which ensures stable operation under ambient temperature functions. It is best suitable for provision of signal coverage within offices and residential apartments. Local and remote configuration and surveillance is possible through PC by using Comba’s OMT/OMC software. Internal Li-ion backup battery ensures alarm signals can be sent out in the event of power failure. The SR-9120 comes in a completely sealed, well-ventilated cast aluminum enclosure and is suitable for indoor and sheltered outdoor environment. Main Features

Downlink output power options of 0.5W that provides extended indoor cell coverage. 2-25MHz adjustable bandwidth is suitable for different operating band. Low noise amplifier improves overall system noise figure for better voice quality and reduced drop call. Can be configured as Master Unit (MS) and/or Slave Unit (SU) in a centralized monitoring system. Local / remote control and monitoring function: operating status and parameters can be set or

monitored by the OMT PC. OMC is available for remote operation and maintenance via an integrated wireless modem. (Optional) Internal backup battery keeps the equipment operating for up to two hours in case of power failure. The enclosure is designed for indoor and sheltered outdoor environments - waterproof, damp-proof

and omni-sealed (IP55).



The following figure shows the enclosure of the SR-9120.

DT MT

RS485RS-232EXT_ALM

32448

4180

100-240V~ 50Hz/60Hz

Figure 1: Front, Side and Bottom Views of SR-9120 Enclosure

End of section



2 EQUIPMENT DESCRIPTION

2.1 SR-9120 FUNCTIONAL BLOCK DIAGRAM

LNA1

LNA2

ServiceANTDonor

ANT

Mobile

PowerSupply

AlarmIndicator Main Control Unit

ExternalPowerOMT

Li-ionBATT

Modem

DT MT

OMTComputer with

Data card

WirelessModem

OMC

PA1

PA2

DL Frequency Selective Module

UL Frequency Selective Module

BTS

DPX1 DPX2

Figure 2: SR-9120 Functional Block Diagram

In downlink, the BTS signals are received by donor antenna of the repeater. After the duplexer, the signals are sent to the LNA for pre-amplification, followed by band filtering through the Frequency Selection (FS) Module. The power amplifier (PA) will then amplify the band to the desired output power before entering the duplexer to share a common service antenna with uplink signals path. In uplink, the mobile signals are received by the service antenna. After the duplexer, the signals are sent to the LNA, FS and PA modules. After combining with the downlink signals in the duplexer, the uplink signals are sent to the donor antenna for transmission back to the BTS.



2.2 GENERAL APPLICATIONS

Centralized Control and Monitoring Centralized control and monitoring is applicable for indoor systems employing several indoor repeaters. For remote control and monitoring, the operating status of each remotely connected slave repeater can be monitored by the OMC through the Master Unit (with integrated wireless modem). The Master Unit is locally connected with the Slave Unit via RS-485 communication bus. The communication between the Master Unit and OMT / OMC is via SMS or datalink.

Figure 3: Centralized Remote Control and Monitoring

For local control and monitoring, the Slave units are connected with the Master Unit via RS-485 communication bus, and the working status of each Slave Unit can be locally monitored through the Master Unit.

Figure 4: Centralized Local Control and Monitoring

Master Unit

Slave Unit 1Slave Unit

OMT PC

RS-485 Communication Bus RS-485

RS-485 RS-485 RS - 485

Slave Unit 2 Slave Unit n

Modem

n

Master Unit


OMT PC

RS-485 Communication Bus RS-485

RS-485 RS-485 RS - 485


Modem

n≤32

Master Unit


OMT / OMC

OMT PC

RS-485 Communication Bus

RS-232

RS-485

RS-485 RS- 485 RS-485

GSM/PSTN Network


Modem Modem

n≤32



2.3 EQUIPMENT LAYOUT

Shown below is the internal layout of the SR-9120.

Bat

tery

Mod

em

PSU

Frequency Selective Module

LNA

TX

ANT RX

RX

RX

20DB

DPX

TX

AN

T

PA

Freq

uenc

y S

elec

tive

Mod

ule

RF_IN

RF_OUT

RF_OUT RF_IN

Distribution Board

Figure 5: Layout of SR-9120 2.4 EQUIPMENT CONSTITUTION

The typical SR-9120 unit consists of the following components: No Identifier Functional Description

1 Frequency Selective Module (FS)

The frequency selective module is used to select desired signals and filter unwanted signals effectively.

2 Power Amplifier Module (PA)

The linear UL/DL PA module amplifies the UL/DL signals respectively.

3 Duplexer Module (DPX)

The MT Duplexer Module consists of UL LNA, VSWR detect circuit. The module splits/combines the UL/DL signals, pre-amplifies the uplink signal by Low Noise Amplifier (LNA), and detects the VSWR and DL output power. The DT Duplexer Module consists of DL LNA, VSWR detect circuit. The module splits/combines the UL/DL signals, pre-amplifies the downlink signal by Low Noise Amplifier (LNA), and detects the DL input power. The connector marking “20dB” is for coupling the Modem signal into ANT connector.

4 Low Noise Amplifier (LNA) The low noise amplifier pre-amplifies the UL/DL signals.

5 Distribution Board

Each distribution board serves as a distributor for power and internal communication within the equipment. On the distribution board located the following connections: connection to function modules, RS232 for local commissioning.



6 Power Supply Unit (PSU) The PSU converts the input voltage into a stable DC power for internal functional units and charge the Li-ion battery.

7 Li-ion Battery

The Li-ion battery pack provides back-up power supply for internal modems up to three hours in the event of main power failure. Caution: Do not handle damaged or leaking lithium-ion batteries. Fire or chemical hazard if mistreated. Do not disassemble. Dispose of properly consult your local regulations or waste disposal provider.

8 Modem Modem is used for remote controlling and monitoring for alarm transmission. It has connection for RF, data and power. There is an indicator LED to show the modem status.

Table 1: SR-9120 Components

End of section



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 from the equipment. It also covers activities that require the use of force or effort, such as pulling a lever, or operating power tools. Where some of the abovementioned activities are required, the equipment must be handled with care to avoid being damage. 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.



3.2 SITE PLANNING CONSIDERATIONS

Site Considerations The repeater is designed for indoor / sheltered outdoor installation and operation. Installation Location Mounting surface shall be capable of supporting the weight of the equipment. In order to avoid electromagnetic interference, a proper mounting location must be selected to minimize interference from electromagnetic sources such as large electrical equipment. Environmental Humidity has an adverse effect on the reliability of the equipment. It is recommended to install the equipment in locations having stable temperature and unrestricted air-flow. The installation location for the product should be well ventilated. The equipment has been designed to operate at the temperature range and humidity level as stated in the product specifications in the datasheet. Direct sun light exposure to the equipment should be avoided. Provide additional shelter if necessary. Power Supply The power supply unit (PSU) provides power to all modules within the enclosure. The PSU accepts AC mains voltage. 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 required. Where applicable, ensure cables are properly routed and secured so that they are not damaged. Manual Handling During transportation and installation, take necessary handling precautions to avoid potential physical injury to the installation personnel and the equipment.



3.2.1 INSTALLATION CHECKLIST

Installation Location Requirement Considerations

Working Space required Ample space on mounting wall surface or pole for unrestricted airflow, door opening and cable routing. Recommended wall surface: 0.6mx0.6mx0.6m

Power Supply

Provided power cord length is about 4m. Use a dedicated AC breaker or fuse circuit with good access to an earthling point. Here are the power supply options for this repeater: AC80~265V/47~63Hz DC-48V: -32~-72V(Optional)

EMC and Interference Do not locate near large transformers or motors that may cause electromagnetic interference.

Suitable operating environment -20 oC to +45 oC and maximum 95% relative humidity.

Table 2: Installation Checklist 3.2.2 ANTENNA INSTALLATION CHECKLIST

Installation Location Requirement Considerations Locate donor antenna in order to receive the most appropriate signal level from the desired BTS and to shield it from other signals at the same time.

Field intensity of receiving site: Typical mobile phone test field intensity ≥ -60dBm

Locate the service antenna directed away from the donor cell.

Always try to maximize Isolation between donor antenna and service antenna. I > Gmax+10dB

The isolation must be 10 dB larger than the maximum gain of the repeater in operation.

Table 3: Antenna Installation Checklist 3.2.3 PREPARATIONS

Open and check the content of the package received against the packing list. If any external damages, please report to shipping agent. If any items are missing, contact Comba Telecom System.

Item Product Identifier Qty Remark Mounting Rack T3-099901-5201 1 Bolt Clamp T3-099901-5202 2 Masonry Bolt M10x110 4 Short Square Neck Bolt M12x160 4 Hexagonal Nut M12 8 Recessed Hex Socket Bolt M8x20 6 Communication Bus Cable X14J5-RJ45 1 Local Commissioning cable X14J5-DB9K 1 Equipment Replacement Fuse Delay fuse for PSU 2 OMT Software and User Manual OMT V3.22 or above 1

Equipment User Manual

On CD-Rom This manual 1

Table 4: Preparation Checklist



3.3 INSTALLATION PROCEDURES

3.3.1 GOODS INWARDS INSPECTION

Verify the number of packages received against the packing list. Check all packages for external damage; 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 during transit is the responsibility of the agent.

Open and check each package against the packing list. If any items are missing, contact Comba. Do not remove items from anti-static 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 routine maintenance. 3.3.3 MOUNTING RACK

The mounting is used for mounting the equipment to either a wall or on a pole, which could be pre-installed for shipment. To separate the mounting rack before commencing to wall or pole mounting, unlock the enclosure door and use Allen key to remove all the hex socket bolts (M8x20) at the corners of the door.

240

120200

4-13*13

4- 15

Figure 6: Wall Mounting Rearview



3.3.4 WALL MOUNTING DETAILS

The following describes the mounting of equipment to a wall. • Drill holes on the wall for masonry bolts according to the dimension of the upper/lower mounting tabs

indicated in Figure below. • Insert the masonry bolts to the wall, and secure the mounting rack on the wall with four M10 masonry

bolt nuts. • Hook the enclosure onto the mounting rack, and then secure all six recessed hex socket bolts on both

side of the enclosure.

Masonry Bolt M10x110

Mounting Rack

M8x20 Hex Socket Bolt

Enclosure

Figure 7: Wall Mounting Overview



3.3.5 POLE MOUNTING DETAILS

The following describes the mounting of equipment onto a pole. • The equipment can be mounted on poles of about 60~75mm in diameter. • Secure the mounting rack onto the pole using M8x20mm bolts and clamps using carriage bolts through

the square holes. • Tighten and lock M12 nuts together onto the carriage bolts. • Hook the enclosure onto the mounting rack, and then secure all six recessed hex socket bolts on both

side of the enclosure.

Enclosure

Mounting Rack

Pole

M8x20 Bolts

Figure 8: 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.



3.4 EQUIPMENT CONNECTORS

The SR-9120 is designed for all cable entries from the bottom of the enclosure, as shown in the following figure.

DT MT

RS485RS-232EXT_ALM 100-240V~ 50Hz/60Hz

Figure 9: Equipment Connectors

Identifier Descriptions

DT N-Female connector for connection to donor antenna.

MT N-Female connector for connection to service antenna.

RS-232 9-pin connector for local commissioning with the supplied commissioning cable.

RS-485 8-pin RJ45 connector for connection to the Slave Unit with the RS-485 communication bus.

100-240V~50Hz/60Hz 1

This is a power cable gland for a pre-installed power cord for connection to AC supply (e.g. 220V).

Table 5: SR-9120 Connectors

1 The voltage identification is a variant due to electricity system diversity of global regions. The power cable gland might be identified for AC 220V, AC 110V, AC 220V/110V, DC -48V, or DC +24V respectively. Please refer to specific product or contact local sales if any doubt.



3.5 EQUIPMENT CONNECTIONS

3.5.1 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. Protective Ground Connection The enclosure must be grounded securely by connecting a copper wire (CSA 16mm2) to the grounding terminal on the equipment/rack, and the other end to a protective ground (i.e. building earth point). An internationally acceptable colour code of the ground connection wire is green/yellow. Such a ground connection implements the “Protective Ground Connection”, and must be connected to the equipment at the designated ground point. In general, do not connect the supply before establishing an adequate ground (earth) connection. Construct the ground wire, and use appropriate crimp connectors where necessary. Locate and connect the equipment grounding terminal to a protective ground (i.e. building earth point). 3.5.2 SERVICE VOLTAGE CONNECTION

The product accepts AC 220 or AC 110V power depending on the type of PSU installed. • The equipment accepts single phase 220VAC/110VAC power. The recommended AC connection is

rated at AC220V, 3.15A and has three connections to include earth. The power cord has been pre-wired to the PSU and led out via the power cable gland.

• The power cord has been pre-wired to the PSU and led out via the power cable gland. 3.5.3 LI-ION BATTERY CONNECTION

The method to connect the Li-ion battery is product specific. For the Li-ion battery with switch, which identified as “BAT2” on PSU, please enable the Li-ion battery by switching to “1” and disable by switching to “0”. The Li-ion battery switch is OFF prior to shipment. For the one without switch, an in-line connector close to the battery pack is used to control the Li-ion battery connection, which is “disconnected” before shipping.

Notice: Please enable the Li-ion battery connection after equipment is powered to ensure alarm unit working in the event of power failure. 3.5.4 RF CABLE CONNECTION

The connection of feeder cables is as follows: • MT port → Connected to the feeder cable from service antenna • DT port → Connected to the feeder cable from donor antenna



3.5.5 PHYSICAL CONNECTION TO OMT PC

The local commissioning and management of the SR-9120 can be achieved by local connection of the equipment to the OMT PC. To establish the connection between the OMT and the equipment, connect the RS-232 port located on the bottom of the enclosure of the Master Unit or Slave Unit to the serial port of the OMT PC using the supplied RS-232 cable(R-9122C/R-9122AC). This completes local connection between the OMT PC and the equipment.

Figure 10: Local Connection to OMT PC

3.5.6 EXTERNAL ALARM CONNECTION

Four external alarms INPUT are realized on the EXT_ALM port, this is a 7-pin CPC connector. Pin numberings are shown looking-into the connector on the enclosure.

21

453

6 7

Figure 11: Pins Allocation for EXT_ALM Connector

Pin number 1 2 3 4 5 6 7

Alarm definition

EXT. Alarm 1

EXT. Alarm 2

EXT. Alarm 3 GND EXT.

Alarm 4 Reserved Reserved

These signals are defined as “TTL/CMOS level”, the following voltage are valid as EXT_ALM signals:

Voltage as applied to EXT Alarm Pin Alarm Condition recognized by system Low Voltage: 0V to 1.5V Alarm recognized High Voltage: 3.5V to 5V No Alarm recognized

3.5.7 PHYSICAL CONNECTION BETWEEN MASTER UNIT AND SLAVE UNIT

When Slave Units are included in a centralized control and monitoring System, physical connection between Master Unit and Slave Unit must be established prior to the commissioning. This is established via the RS-485 port located on the bottom of the enclosure of the equipment by using RS-485 communication buses. This “RS-485” port is a 5-pin CPC connector. The following figure illustrates the centralized control and



monitoring system by using the RS-485 communication bus.

Figure 12: Centralized Control and Commissioning of SR-9120

A maximum of 32 Slave units can be cascaded in one system. Either one of the following may be used at any one time: • For management by the OMT, the local PC is connected to the Master Unit, as in the above figure. And

the connection between the Master and the Slave Units is made by using the RS-485 communication bus.

• For management by the OMC, ensure the SIM /UIM card is inserted into the wireless modem installed in the Master Unit before powering ON the equipment.

Note1: The RS-485 communication bus is not supplied by Comba. Details on how to connect the Master

Unit to the Slave Unit is outside scope of this document.

Note2: The equipment should be powered off when connecting the connectors.

Master Unit

Slave UnitSlave Unit

OM

OMT PC

Communication Bus

RS232RS-485 RS- 485 RS-48

GSM/PSTN Network

Slave Unit Slave Unit

Modem Mode

Master Unit

Slave UnitSlave Unit

OMC

OMT

RS232

RS-485

RS-485 RS- 485 RS-485

GSM/PSTN Network

Slave Unit Slave Unit

Modem Mode



3.6 PREPARATION FOR REMOTE CONTROL OF EQUIPMENT USING WIRELESS MODEM

Wireless Modem For the equipment variant equipped with wireless modem, the modem provides the option of remote connection of the equipment via the OMT. The wireless (GSM) modem implements the link for data and SMS functions. Note: When CDMA modem is used, only SMS function is supported to retrieve alarm information and to provide remote control. The power and data cables have been factory-connected to the wireless modem. User only needs to insert the SIM / UIM card to the GSM / CDMA modem. To insert or replace the SIM /UIM card, locate and press down the recessed button (yellow) to eject the SIM / UIM card carrier (refer to the following figure).

Figure 13: Wireless Modem

Note: Data link mode is dependent on service availability from service operator. If it is required, the operator’s SIM card must be data-enabled (Circuit Switch Data) and without PIN code.

End of section



4 COMMISSIONING

4.1 PRE-COMMISSIONING TASKS

After equipment installation, perform the following steps before equipment powering and commissioning. Verify the incoming power source voltage, current, and power levels do not violate any ratings. Double check all connections before applying power. Do not manipulate circuits or make changes with power applied. • Visually inspect the power connection within the equipment. Ensure that the power cable is correctly

and securely connected, including grounding wire and RF cable. • Check grounding connection and verify that the ground resistance is less than 5Ω. • Connect the equipment to the PC installed with OMT software. • With the equipment installed and cables connected, apply power to it by switching on the PSU switch. • Monitor the initialization of the equipment through the indicator LEDs on the enclosure bottom. Refer to

detailed LEDs information in the next section. 4.2 EQUIPMENT LED INDICATORS

Diagnostic LEDs are located on the distribution board; each indicates the status of a particular function:

Identifier Colour Indication

H1 Green Distribution board operation. Flashes at a rate of 1 flash/sec. Any other flashing rate indicates distribution board is faulty, and has to be replaced.

H2 Red Alarm LED. When ON, it indicates alarm condition.

H3 Red Wireless modem status. During normal operation, it is OFF. When ON, it indicates faulty wireless modem and no communication will take place.

Table 6: Distribution Board LEDs Distribution board Initialization Procedure All three diagnostic LEDs of each distribution board will flash simultaneously for three times when power is initially supplied to the equipment. Then H1 will keep flashing at the rate of 1 flash/second. H2 will be ON when any alarm occurs. After successful initialization of the wireless modem, H3 will be ON for about two minutes and then turn off; otherwise, it will remain ON to indicate a problem.



4.3 CONNECTION OF THE OMT TO EQUIPMENT

Before executing the OMT software, physical connection between the OMT software and the equipment must be made. (See paragraph 3.5.5) When Slave Unit is included in a centralized control and monitoring system, physical connection between the Master Unit and Slave Unit must be established. (See paragraph 3.5.7) Power-up the equipment, and execute the OMT software. It will go through the initialization process (duration about 60~120s). At this stage, OMT software is running and is able to communicate with the equipment either by a direct serial link or remotely by a wireless modem. Note: The default settings are: baud rate (9600), check bit (None), data bits (8 bits), and stop bit (1 digit). 4.4 OMT

The equipment can be monitored and controlled by one of two methods.

OMT software running on a local PC with serial link, or remote connection to the equipment via wireless modem.

OMC (optional) software with remote connection to the equipment over wireless GSM / CDMA network.

Note: Items in the OMT window displayed in grey cannot be set or monitored. The OMT software runs on Windows operating system, and is designed for monitoring and maintaining of Comba repeaters and boosters. The OMT software can accomplish the following functions:

Configures and adjusts the equipment’s operating parameters. Displays the equipment’s internal operation status. Displays the input field level and output power. Downloads firmware for upgrading purpose.



4.5 LOCAL AND REMOTE COMMISSIONING

4.5.1 LOCAL CONNECTION TO OMT

After database configuration is done successfully, the following window will pop up and select [Local connection via RS-232] for local connection.

Figure 14: Connection Type

Select the desired communication port and click “OK”, it will enter into the main window of OMT.

Figure 15: Serial Port Configuration

4.5.2 REMOTE CONNECTION TO OMT

If remote connection is needed, users can select [Remote connection via modem] in connection type window. Select desired serial port and click “OK” in [Serial Port Configuration] window to go to OMT main window and start modem initialization. Click “connect” and the [Remote Connection] window will show up.

Figure 16: Remote Connection



Config: Enter the correct phone number (Users don't have to enter the password) and click “connect”, it will be connected remotely. Notice: Please enable the SIM card to support Circuit Switch Data. 4.6 OMT CONFIGURATION

After entering the OMT main screen, click the “Connect” button on the toolbar, to connect the equipment to the OMT. Successful connection will be indicated by a message “Online Ok” and equipment parameters can be read and/or set. Users can configure the parameters, and then offset the parameters according to desired coverage level and interference to other BTS signals. OMT parameters include: Common Information, RF Information, Alarm Information, and Properties Information.

Figure 17: OMT Main Window

4.7 RF PARAMETER

It is recommended to configure the following RF parameters for the first installation. 4.7.1 SWITCH

Switch is to enable/disable power for internal modules. When user checks and sets non-RF parameters, such as checking physical antenna connection, switching off will disable equipment power temporarily to protect PA in operation.

Figure 18: Switch

Config:



Select the required state in setting columns of RF information window for RF switch, then press [Enter] or [Config] button to finish the configuration operation. 4.7.2 CHANNEL NO.

Channel No. includes DL Channel No. 1 and DL Channel No. 2. The value in [MaxValue] column is the upper limit of the range, while the value in [MinValue] column is the lower limit of the range.

Figure 19: Channel No.

Config: Enter the required value in setting columns and click [Config] button to finish the configuration operation. There are two methods to insert the channel number:

Insert the desired channel number (within the setting range) into the [Setting] column directly Right click the [Setting] column, the [Frequency Calculator] dialogue window seen as below will

pop-up, insert the desired channel number. Then the corresponding frequency will turn up automatically. This function makes it easier for user to configure.

Figure 20: Frequency Calculator

4.7.3 ATT

ATT adjustment includes UL/DL ATT adjustment. The purpose of adjusting the ATT is to adjust system gain. DL/UL ATT setting range: 0~30dB

Figure 21: ATT

Config: Select the required value in setting columns of RF information window for ATT, and press [Enter] or [Config] button to finish the configuration operation.



4.7.4 ALARM THRESHOLD

Alarm Threshold includes Power threshold, Temperature threshold and VSWR threshold. Users can set alarm threshold according to the specific situation. If the measured value is lower than the threshold lower limit or more than the threshold upper limit, the appropriate alarm will be generated.

Figure 22: Alarm Threshold Config: Enter the required value in setting columns of RF information window for Alarm threshold, and press [Enter] or [Config] button to finish the configuration operation. Notice: The input value must be in the range of power threshold. The DL VSWR threshold setting range is available for only three values: 1.5, 2.0 and 2.5. 4.7.5 ALARM INFORMATION

Alarm information operation is to select alarm parameters for monitoring. Alarm parameters include Master Alarm, Channel Alarm and External Alarm. Click any tree node in [Alarm Info] group, [Alarm Parameter Information] window will appear in the right side. The picture below shows the master alarm information.

Figure 23: Master Alarm

Alarm Threshold Setting Range Initial Setting DL Output Power Low Threshold -2~29dBm -2dBm DL Input Power Overload Threshold -80~-29dBm -29dBm PA Over-Temperature Threshold -40~125 oC 85 oC DL VSWR Threshold 1.5, 2.0, 2.5 2.0



Figure 24: External Alarm

Config: Tick the check box of [Item select] and [Enable] of the desired parameters and click [config] button to finish configuration operation.

Notice: [Enable] box is to enable the alarm monitoring for system. Only if users enable the alarm by ticking the [Enable] box, the alarms can be monitored by the OMT/OMC. On the distribution board, if any alarm is generated and this alarm is also enabled in [Enable] box, LED H2 turns RED; while it is OFF when normal working. On the OMT/OMC window, [Alarm Status] indicator keeps GREEN if no alarm and turns RED if an alarm is generated. Please notice that if the desired alarm is not enabled in [Enable] box, even if this alarm is generated, it keeps GREEN in the OMT/OMC interface and LED H2 on Distribution board keeps OFF as well.



4.8 PROPERTIES INFO.

4.8.1 EQUIPMENT ID

Equipment ID is to be configured after local commission has been completed, which includes Site ID, and Site Sub ID.

Figure 25: Equipment ID

See the table below for configuration details of each parameter.

Item Description Site ID Site ID is the unique equipment identification. It is a hexadecimal string of eight

characters in the range of [00000000~FFFFFFFF]. e.g. 00000000 Site Sub ID Site Sub ID is used for Master-Slave System. It is the unique identification of each

Master/ Slave Unit and is a hexadecimal string of two characters in the range of [00~FF]. For the system located with single equipment, the Site Sub ID should be FF. For Master-Slave system, the Site Sub ID for Master Unit is 00, and the Site Sub ID for each Slave Unit is represented in the range of [01~FE] in ascending order. e.g. Master Site ID: 00, Slave Site ID: 01

4.8.2 COMM. CONFIG

If the equipment is to be monitored by OMC software over wireless GSM / CDMA network, users must finish the [Comm. Config.] in the next step. The Comm. Config information requires to be manually entered by users after successful connection to the equipment.

Figure 26: Com. Config.

See the table below for configuration details of each parameter.



Item Description

Checking Control Select “Enable” or “Disable” from the drop down menu as shown to enable or disable the Phone Number Authentication feature. Refer to [Phone No.] in details.

OMC Server IP Based on the current network conditions, users can enter the IP address information of the equipment, which is connected to the OMT/OMC via Ethernet. This connection via Ethernet is not available at this stage.

Phone No. This is designed for authentication purpose when remote connection via modem is required. It is the phone number to dial the equipment. Only the phone number pre-defined in this field, will it be allowed to dial the equipment. It is required to manually enter the phone number. Up to 5 phone numbers are allowed. The use of phone number authentication can avoid unauthorized use of the OMT. In addition, it can prevent the equipment receiving piles of spam short messages, thus help the operator greatly reduce the cost.

Report Config The Report No. is the SIM card number of the modem built into the OMC Server computer. The equipment will send alarm SMS to this number. If remote communication is needed via modem, users have to enable SMS mode and set the report phone No. by entering the SIM card number of the equipment built-in modem.

SMSC No. It specifies the SMS center. Users have to set the service No. of SMSC for the first installation, so that the alarms can be sent to OMC.

End of section



4.9 COMMISSIONING PROCEDURES

System commissioning can proceed for the Master Unit and Slave Unit after the monitoring system has been initialized. Commissioning Tasks Observation 1. Set on-line and inquiry

status. • In the SR-9120 Main window, select ‘Online’ to access the

equipment’s status. If there is alarm, check the cause of failure and proceed to clear the alarm.

• Set system and device ID, and other network parameters. • Decide if a group of Slave units are to be managed centrally, and

setup the respective site ID in the “Slave Site ID” column in the Master Unit OMT window. The site ID of each Slave unit is observed from the OMT screen when local commissioning of the Salve unit is performed.

2. Test input power and align donor antenna.

• Select “RF Parameters”, and observe the DT port received signal level. Align the donor antenna to maximize the DL input power reading.

3. Check DL output power. • Set the DL gain to maximum and read the DL output power to determine if design requirement is achieved.

• If the output power is satisfactory and the equipment is operating in ALC mode, then adjust either DL ATT to operate ALC within 1~3dB, or to the desired value according to the coverage requirement.

4. Check UL output power. • Configure the UL ATT to be 3~5dB lower than the DL ATT. • Make test calls in the coverage area and adjust the UL gain to

achieve the best coverage and voice quality. 5. Test field strength of

coverage area and align service antenna (if applicable).

• Test field strength with test mobile to verify coverage. If the field strength is marginally insufficient and output power is at maximum, then realign or raise the height of the mobile antenna. (if applicable)

Table 7: Commissioning Procedures

End of section



5 MAINTENANCE

The system is designed for trouble-free operation and generally does not need maintenance. Maintenance activities should only be carried out by trained personnel if required. The equipment operation status can be observed remotely through OMT/OMC. Periodic inspection of the equipment(s) is recommended. The recommended tasks include:

• Measurement of the return loss of the feeder system. • Ensure the reliable connection of cables, power cords and facilities located indoor. • Inspect and record operation status and parameters, such as receive signal level, output noise level,

DL output power of the equipment, from the OMC or OMT. • Check the PSU output voltage. • Verify that the actual coverage has not degraded. • Check the controlling and monitoring function. • Verify that lightning and grounding protection is in good condition. • Ensure the labels are clear and legible. • Verify the Li-ion battery status. Deeply discharged battery should be returned to the factory for

replacement. If the battery voltage drops below 16V within one hour, replacement of Li-ion battery is recommended.

End of section



6 APPENDICES

6.1 APPENDIX A: TOOLS FOR INSTALLATION AND MAINTENANCE

The following are the recommended tools for new installation:

Tool Dimension Electrically operated drill and masonry drill bits Appropriate for M10 boltScrew Driver Slotted and Philips Ring Spanner 12~20mm Knife for tape or cable stripping Crimp tool for RJ45 Anti-static Wrist Strap Allen Key 5mm Side Cutter Frequency Counter (e.g. FLUKE PM6685R) RF Power Meter (e.g. Bird 5000) Multi Meter to check cables, voltages alarms PC with supplied OMT or OMC software SIM cards both for repeater and modem with SMS (Short Message Service) and CSD (Circuit Switch Data) enabled

External alarm cable for connection to external alarm terminals Fused Power Outlet for repeater



6.2 APPENDIX B: SERVICING POLICY AND RETURN OF EQUIPMENT

The repair of individual units and modules of this equipment is not considered practicable without factory facilities. It is, therefore, the policy of Comba whereby faulty units or modules are returned to the local agent for repair. To enable an efficient, prompt after sales service to be provided for the diagnosis, repair and return of any faulty equipment, please comply with the following requirements. Items to be sent for repair should be packaged so as to provide both electrostatic and physical protection and a Repair Material Authorization (RMA) should be completed giving the required information. A sample RMA form is provided in Appendix. This request must be included with the item for repair. Items for repair should be sent to the nearest Comba office: COMBA TELECOM LTD. Hong Kong Office Address: 611 East Wing, No. 8 Science Park West Avenue, Hong Kong Science Park, Tai Po, Hong Kong. Tel: +852 2636 6861 Fax: +852 2637 0966 Singapore Office Address: No. 1 Kaki Bukit View, #02-10 Techview, Singapore 415941 Tel: + 65 6345 4908 Fax: + 65 6345 1186 Thailand Office Address: 3rd Floor, T. Shinawatra Building, 94 Sukhumvit Soi 23, Sukhumvit Road, Klongtoeynua, Wattana, Bangkok 10110 Tel: +66 2664 3440 Fax: +66 2664 3442 India Office Address: Suite No. 2, E-172, TSH House, Greater Kailash – I, New Delhi – 110 048, India Tel: + 91 11 4173 9997 / 8 Fax: + 91 11 4173 9996 Sweden Office Address: Gustavslundsvagen 147, S- 167 51 Bromma, Stockholm, Sweden Tel: +46 8 25 38 70 Fax: +46 8 25 38 71 Brazil Office Address: Avenida Engenheiro Luiz Carlos Berrini 1297, cj 122, 04571-090 Brooklin Novo, São Paulo,

Brazil Tel: +55 11 55050549 Fax: +55 11 55050549 ext 7 Dubai Office Address: P.O. Box 450583, DUBAI, U.A.E. Tel: +971 0 4 433 5320 Fax: +971 0 4 422 6774 US Office Address: Comba Telecom Inc. 2390 Bering Drive, San Jose, CA 95131, USA Tel: +1 408 526 0180 Fax: +1 408 526 0181 China Office Address: No.10, Shenzhou Road, Guangzhou Science City, Guangzhou, China Tel: + 86 20 2839 0000 Fax: + 86 20 2839 0136



6.3 APPENDIX C: RMA (RETURN MATERIAL AUTHORIZATION) FORM

End of section

End of Document

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