Shyam Telecom BTSLINK-208 BTS Link-208 Repeater User Manual 1

Shyam Telecom Inc. BTS Link-208 Repeater 1

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User Manual 1

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OPTICAL / MOU Series / BTS LINK

-2

Contents

5920 0020 200 A

ril 2008

Proprietary Information

The information contained herein is proprietary to Shyam Telecom Limited.

Unauthorized access, copy, and replication are prohibited. This document must

not be copied in whole or part by any means or it shall not be disclosed o

divulged to any third Party without the prior written consent of Shyam Telecom

Limited.

MOU DBROU

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1. DOCUMENT HISTORY......................................................................................2

2. DISCLAIMER......................................................................................................3

3. SAFETY INSTRUCTIONS AND WARNINGS ...................................................4

3.1. PERSONNEL SAFETY .....................................................................................4

3.2. EQUIPMENT SAFETY......................................................................................4

3.3. ELECTROSTATIC SENSITIVITY ........................................................................5

4. INTRODUCTION ................................................................................................5

4.1. PURPOSE .....................................................................................................5

4.2. SCOPE .........................................................................................................6

4.3. DEFINITIONS .................................................................................................6

4.4. REFERENCES ...............................................................................................6

4.5. GENERAL .....................................................................................................7

5. FUNCTIONAL DESCRIPTION OF BTS LINK-208 REPEATER.......................7

5.1. GENERAL DESCRIPTION ................................................................................7

5.2. INDOOR/OUTDOOR COVERAGE ......................................................................9

6. TO GET STARTED-BASIC SOFTWARE CONTROL OF THE SYSTEM.......11

6.1. GENERAL ...................................................................................................11

6.2. TERMINAL SET-UP.......................................................................................11

6.3. BLOCK DESCRIPTION ..................................................................................21

7. BTS LINK-208 REPEATER SPECIFICATIONS.............................................24

7.1. ELECTRICAL SPECIFICATIONS-RF & OPTICAL...............................................24

7.2. ELECTRICAL SPECIFICATION POWER REQUIREMENT .....................................24

7.3. EXTERNAL ELECTRICAL/OPTICAL INTERFACE...............................................24

7.4. MECHANICAL SPECIFICATION.......................................................................24

7.5. ENVIRONMENTAL SPECIFICATION .................................................................25

7.6. CONTENTS OF DELIVERY .............................................................................25

7.7. SAFETY PRECAUTIONS-HANDLING OPTICAL EQUIPMENT ...............................25

8. INSTALLATION................................................................................................26

8.1. PREPARATION SHEET-PRE INSTALLATION.....................................................26

8.2. MOU INSTALLATION....................................................................................27

8.3. OPTICAL FIBER CABLE LAYING ....................................................................29

8.4. INSTALLATION-DBROU...............................................................................30

8.5. DOS & DON’T DOS......................................................................................31

8.6. CHECKLIST-POST INSTALLATION ..................................................................32

9. SYSTEM MAINTENANCE ...............................................................................34

9.1. GENERAL ...................................................................................................34

9.2. PREVENTATIVE MAINTENANCE.....................................................................34

1. Document History

Document

Number Document

Name Date Compiled

by Approved

by Revision

5920 0020 200 BTS Link- 208

ril Inderjit D.S.Nagi

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Repeater 2008

Revision Revised Section Date

Intentionally Left Blank

2. Disclaimer

Every attempt has been made to make this material complete, accurate,

and up-to-date. Users are cautioned, however, that Shyam Telecom

Limited reserves the right to make changes without notice and shall not be

responsible for any damages including consequential, caused by reliance of

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the contents presented, including, but not limited to, typographical,

arithmetical, or listing errors.

Product name(s) referenced in this document may be trademarks or

registered trademarks of their respective companies, and are hereby

acknowledged.

In areas with unstable power grids (mains) all repeaters must be installed

with a voltage regulator ensuring a constant voltage level at the repeater

power input. A maximum voltage deviation should remain within the input

range to the repeaters for warranty purposes.

All antennas must be installed with lighting protection. Damage to internal

modules, as a result of lightning is not covered by the warranty.

All specifications are subject to change without prior notice

3. Safety Instructions and Warnings

3.1. Personnel Safety

Before installing or replacing any equipment, the entire manual should be

read and understood. The user needs to supply the appropriate AC power

to the Repeater. Incorrect AC power settings can damage the repeater and

may cause injury to the user.

Throughout this manual, there are "Caution" warnings, "Caution" calls

attention to a procedure or practice, which, if ignored, may result in injury

or damage to the system or system component or even the user. Do not

perform any procedure preceded by a "Caution" until the described

conditions are fully understood and met.

3.2. Equipment Safety

When installing, replacing or using this product, observe all safety

precautions during handling and operation. Failure to comply with the

following general safety precautions and with specific precautions described

elsewhere in this manual violates the safety standards of the design,

manufacture, and intended use of this product. Shyam Telecom Limited

assumes no liability for the customer's failure to comply with these

precautions. This entire manual should be read and understood before

operating or maintaining the repeater system.

CAUTION

It calls attention to a procedure or practice which, if not followed, may result

in personal injury, damage to the system or damage to individual

components. Do not perform any procedure preceded by a

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CAUTION until described conditions are fully understood and met.

3.3. Electrostatic Sensitivity

CAUTION

ESD = ELECTROSTATIC DISCHARGE SENSITIVE DEVICE

Observe electrostatic precautionary procedures.

Semiconductor transmitters and receivers provide highly reliable

performance when operated in conformity with the intentions of their design.

However, a semiconductor may be damaged by an electrostatic charge

inadvertently imposed by careless handling.

Static electricity can be conducted to the semiconductor chip from the

centre pin of the RF input connector, and through the AC connector pins.

When unpacking and otherwise handling the Repeater, follow ESD

precautionary procedures including the use of grounded wrist straps,

grounded workbench surfaces, and grounded floor mats.

4. Introduction

4.1. Purpose

The purpose of this document is to describe the electrical and mechanical

specifications, operation and maintenance of the BTS Link-208 Repeater.

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4.2. Scope

This document is the product description of the Shyam BTS Link-208

Repeater.

4.3. Definitions

AGC Automatic Gain Control

ALC Automatic Level Control

APC Automatic Power Control

BTS Base Transceiver Station

CDMA Coded Division Multiple Access

CMC Configuration & Monitoring Console software

DBROU Dual Band Remote Optical Unit

DCS Digital Communication System

DL Downlink signal (from base station via repeater to

mobile station)

EGSM Extended Global System for Mobile Communication

ETSI European Telecommunications Standard Institute

FDF Fiber Distribution Frame

GSM Global System for Mobile communication

IMD Inter Modulation Distortion

LAC Location Area Code of the BTS site

LED Light Emitting Diode

LNA Low Noise Amplifier

LO Local Oscillator

MOU Master Optical Unit

MS Mobile Station

NMS Network Management System

PCN Personal Communication Network

PCS Personal Communication System

PSU Power Supply Unit

RF Radio Frequency

RMS Remote Management System

ROU Remote Optical Unit

RSSI Received Signal Strength Indication

UL (Uplink) Uplink signal direction (from mobile station via

repeater to base station)

UMTS Universal Mobile Telecommunication System

4.4. References

[1] ETS 300 086.

Radio Equipment and Systems Land mobile service Technical

characteristics and test conditions for radio equipment with an internal or

external RF connector intended primarily for analogue speech.

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[2]ETS300609-4.

Digital cellular telecommunications system (phase 2): Base Station

Systems (BSS) equipment specification: Part 4: Repeaters.

[3] ETS 300 342-3

Radio Equipment and Systems (RES); Electro-Magnetic Compatibility

(EMC) for European Digital Cellular Telecommunications systems. Base

Station Radio and ancillary equipment and Repeaters meeting phase 2

GSM requirements.

4.5. General

Mobile Communications Systems are planned as cellular systems and each

cell of the base station is required to provide RF coverage over a certain

geographical area as per defined RF power levels. Due to the RF

propagation properties, even using high radiated RF powers or complicated

antenna systems, there are zones within the coverage area where the RF

signal strength from base station remains inadequate for establishing the

desired connectivity to mobile users.

Repeaters traditionally are deployed in the Mobile Communication Network

to fill in the “Dead Zones” caused by blocking of signals by geographic

topologies such as mountains, valleys, dense foliage, high rise urban

landscapes, and other man-made structures. The distance from the base

station also adversely affects the RF signal strength. The user views

repeaters as a means to extend base station coverage so as to reduce the

number of base stations and thereby accelerate network availability.

Repeater systems are installed after meticulous planning between BTSs

and the mobile users to provide RF coverage in the shadowed regions.

Repeater systems are available for different applications and ultimate

choice shall depend on some of the factors mentioned below:

• Area to be provided with coverage.

• Indoor/outdoor coverage.

• Availability of BTSs in the vicinity.

5. Functional Description of BTS Link-208 Repeater

5.1. General Description

The BTS Link-208 Repeater System is designed to provide indoor

coverage and can handle signals in two service bands viz. Cellular & PCS,

used by various service operators. It provides highly selective amplification

in the pre-set bands. The details of operating frequencies are:

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Cellular 869 MHz to 894 MHz (DL) 824 MHz to 849 MHz (UL)

PCS 1930 MHz to 1990 MHz (DL) 1850 MHz to1910 MHz (UL)

• The BTS Link-208 repeater system is a dual band Distributed

Antenna System (DAS) for point to point & point to multi-point

coverage.

• It is comprised of a Master Optical Unit (MOU) and Dual Band

Remote Optical Units (DBROUs), maximum 8, installed at different

sites. MOU & DBROUs are connected through a pair of optical

fibers.

• DBROUs with appropriate housings for indoor application can be

installed at the pre-planned sites.

• Master Optical Unit (MOU) is installed at indoor location close to

BTSs from where the signals are to be received and also OFC

terminations destined for DBROUs at different sites are available.

• The repeater is deployed in the network where RF coverage is

required for large clusters of mobile users at different sites.

• The repeater can be equipped with a RMS (Optional) for speedy

maintenance & monitoring.

• The antenna isolation problem is of little consequence since the

signals between MOU and DBROUs are propagated as optical

signals, which are insensitive to any electrical

interference/disturbances.

The system is comprised of two units:

I) Master Optical Unit (MOU): The MOU is installed at a suitable indoor

location close to the BTS. It receives/transmits RF signals in dual band

from the BTSs through BTS couplers and optical signals from different

DBROUs. It consists of modules/units:

• Duplexers [Band 1 & Band 2]

• Optical Transmitter Unit (OTX)

• Optical Splitter (1:4)

• Optical Receiver Unit (ORX)

• Power Supply Unit

• Gain modules

• Supervisory and ASK modem

• A metallic housing (Indoor application) accommodates all the

above units/modules. Arrangement is made for dissipation of

heat generated in the unit and the unit is not waterproof.

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II) Dual Band Remote Optical Unit (DBROU): Depending on the

requirement DBROUs maximum up to 4 or 8 are installed at different

locations where coverage is desired. Each of the DBROUs consists of

modules/units:

• Optical Receiver Unit (ORX)

• Power Amplifier

• Quad-plexer

• LNA

• Optical Transmitter Unit (OTX)

• Power Supply Unit

• Gain modules

• Supervisory & ASK module

• A metallic housing for Indoor application accommodates all the

above units/modules. The housing is designed for dissipation of

heat generated in the unit.

5.2. Coverage

When installing DBROU for indoor application, precautions should be taken

not to expose it to direct Sunlight, chemical fumes, and water vapors etc.

Suitable sets of server antennas are to be installed at predetermined

locations to achieve the desired coverage. Some of the applications are

shown in Figures 2 & 3.

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Figure 1: Constituents of BTS Link-208 Repeater

SM Optical

Fiber

Directional Coupler (40dB)

sta

osu

RF Cable Clamp

DBROU

To Relevant

Antenna

To server antenna

To AC Mains

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6. To Get started-Basic Software Control of the System

6.1. General

The system (MOU & DBROU) is equipped with a supervisory module that

allows the monitoring and control of various parameters such as RF power,

attenuation, temperature, and alarm conditions etc.

The communication interface between the local terminal and the control

module can be set up using the Configuration & Monitoring Console

software (CMC), which is an easy to use GUI for simple control and

monitoring. It enables monitoring of parameters & subsequent adjustment if

required.

This function can be performed either using a terminal (PC/laptop) locally,

or through remote login using the wireless modem (Optional) located in the

repeater. USB port is provisioned in the equipment for connecting

PC/laptop.

6.2. Terminal Set-up

The system is delivered with software loaded in order to perform

configuration as per requirement. It also enables monitoring the status.

Configuration of parameters can be carried out locally at MOU & DBROU

with the help of laptop / PC connected to the system by means of local USB

serial interface or remotely via wireless modem (Optional) mounted inside

the MOU. The laptop/PC should be loaded with the CMC software available

on the supplied CD along with the USB driver.

Figure 4: Login Repeater

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Functions as described below are carried out through CMC software:

I) Login Repeater (Figure 4)

After running the Configuration & Monitoring Console (CMC), user

needs to login. Similar sequence is to be followed at MOU & ROU. To

• Click the “Login” on the command bar.

• Select the user type.

• Enter the password.

• Finally click the “OK”.

After successful login a message, “Logged in successfully” message

appears on the screen. Now user can start the operation through CMC.

There are two types of user’s viz. ADMINISTRATOR and

SUPERVISOR. If user logged in as an ADMINISTRATOR, all the

operation through the CMC can be carried out. By default password is

“SHYAM”.

SUPERVISOR is allowed to perform monitoring of the status & alarms

but no change in configuration is permitted. However, the SUPERVISOR

can change password if so desired.

II) Configuration & Monitoring

Configuring system means setting the system parameters for operation

as per the requirement at site. Configuration & monitoring is carried out

at MOU and ROU separately.

a) Settings in MOU

To begin with MOU ID settings as per Figure 5 are carried out,

information specified is:

• Repeater ID

• Repeater Location

Configurable parameters as per Figure 6 are:

• Out put power limit UL Band 1

• Out put power limit UL Band 2

• Laser Diode ON/OFF

• OTX1 ON/OFF and OTX2 ON/OFF

After specifying these parameters, SET is pressed

b) MOU Status

Status of MOU as per Figure 7 is displayed through following set

(configurable) parameters:

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Downlink

• RSSI Band 1 & Band 2

• Attenuation in Band 1 & Band 2

Uplink

• Out put Power Band 1 & Band 2

• Attenuation in Band 1 & Band 2

Optical Power

• OTX 1 & OTX 2

• ORX 1 to 8 [As per number of equipped DBROUs]

Power Supply

• 5.5 V

Alarms

• Alarms as per categorization viz. Critical, major & minor are set.

Clicking at “detail alarms” can further check detail of alarms.

Figure 5: MOU ID Settings

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Figure 6: MOU Settings Window

c) MOU-Alarms (Figure 9)

S.NO. Alarm Remarks

1. RSSI Low Down Link The alarm is generated when the RSSI detected is lower than

the set limit in Band 1/Band 2.

2. RSSI High Down Link The alarm is generated when the RSSI detected exceeds the

set limit in Band 1/Band 2.

3. Power High (uplink) The alarm is generated when the power limit detected

exceeds the limit in Band 1/Band 2.

4. Power Supply 5.5 V The alarm indicates the failure/low of 5.5 V power supply.

5. LD OFF The alarm is generated when Laser Diode Off is detected in

OTX 1/OTX 2.

6. LD power low The alarm is generated when lower optical power than the set

is detected from Laser Diode is detected in OTX 1 /OTX 2.

7. LD power high The alarm is generated when higher than the set optical

power from Laser Diode is detected in OTX 1 /OTX 2.

8. PD power low The alarm is generated when lower than the set optical power

from photo diode is detected in ORX 1…..ORX 8 (De[pending

on the number of ROUs equipped)

9. PD power high The alarm is generated when higher than the set optical

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power from photo diode is detected in ORX 1…..ORX 8

(De[pending on the number of ROUs equipped)

10. System Temperature It indicates that the temperature of the system has exceeded

the limit.

Figure 7: MOU Status

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Figure 8: MOU-Alarms

d) Settings ROU

After login, following settings as per Figure 9 are carried out:

• Output power limits in downlink for Band 1 Band 2 are

specified.

• PA ON/OFF as per requirement in Band 1 Band 2. Both the

PAs remain in ON condition under normal circumstances.

• RSSI limits in Band 1 & Band 2 in uplink path are specified.

• Attenuation inserted in Band 1 & Band 2 , values are indicated.

• Laser Diode ON or OFF setting can be made as per

requirement. It will remain in ON condition during normal

working of the system.

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Figure 9: ROU settings

One MOU supports up to 8 DBROUs, unit selection can be made for a

particular DBROU as per Figure 10 for settings etc.

e) DBROU Status (Figure 11)

Parameters as indicated below are monitored:

• Attenuation inserted In Downlink path in Band 1 & Band 2 in auto mode

is indicated.

• Real time Output power in Band 1 Band 2 is indicated.

• Real time value of RSSI in Uplink path in Band 1 & Band 2 is indicated.

• Real time LD optical power is displayed.

• Real time PD optical power is displayed.

• Real time values of power supply voltages 5.5 V, 7 V supply B, 27 V

supply A & 27 V supply B.

• System temperature is indicated.

• Categories of alarms prevailing in the system are displayed.

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Figure 10: Unit Selection

Figure 11: ROU Status Monitoring Window

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Clicking “Detail Alarm” can check alarms on DBROU

III) Communication Settings (Figure 12)

In COMMUNICATION window, user can select serial communication port

of the computer and type of connection between repeater and computer.

There are two types of connections viz. Local and Remote.

a) Local Connection

In this type of connection user computer COM Port and repeater’s USB

Port are connected directly using cable. Sequence is as under:

• Click the “COMM.” on the command bar to display the

COMMUNICATION window.

• Select the Connection Type as “LOCAL”

• Select the computer’s Comm. Port where the repeater is

connected.

• Click “OK”.

b) Remote Connection

In this type of connection, User communicates remotely with the

system using wireless Modem / Cell phone.

To connect:

• Click the “COMM.” on the command bar to display the

COMMUNICATION window.

• Select the Connection Type as “REMOTE”

• Select the computer’s Comm. Port where the wireless

Modem is connected.

• Click “OK”.

• Now click the “DIALUP” on the command bar to display the

DIALUP window.

• Enter / Select the repeater phone number.

• Click the “DIAL” and wait (maximum 60 seconds) for

connection.

• A message “CONNECTED” will appear on the screen after

the connection is established.

Click “DISCONNECT” to break the connection.

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Figure 12: Communication Settings

IV) Security Settings (Figure 13)

The system has two levels of permitting Log in to the repeater to avoid

unauthorized operation.

The levels are: ADMINISTRATOR & SUPERVISOR.

Each level has a specific password. The password for each level can be

changed at intervals. ADMINISTRATOR has rights to perform all

functions Viz. Configuration, Monitoring etc. Whereas the SUPERVISOR

ha jurisdiction to perform limited functions like monitoring of alarms,

establishing communication etc.

CAUTION

When the communication between repeater & PC/Laptop is in progress

through USB:

• Do not remove cable from the USB port.

• Do not switch off the repeater.

In case the communication is not required any more, click at EXIT before

removing cable from USB port to avoid hanging of the PC/Laptop. In case

the PC/Laptop goes in to hanging mode, it has to be restarted afte

closing/switching OFF & ON the repeater.

Shyam Telecom BTSLINK-208 BTS Link-208 Repeater User Manual 1

Shyam Telecom Inc. BTS Link-208 Repeater 1

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