Shyam Telecom BTSLINK1048 BTS Link-104/108 Repeater User Manual

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OPTICAL / MOU Series / BTS LINK

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FCC ID:S3CBTSLINK1048

IC: 5751A-BTSLINK1048

5920 0020 100

March

200

8

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 or

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

Limited.

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INDEX

1. DOCUMENT HISTORY .......................................................................................... 3

2. DISCLAIMER........................................................................................................... 4

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

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

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

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

4. INTRODUCTION..................................................................................................... 6

4.1. PURPOSE .....................................................................................................6

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

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

4.4. REFERENCES................................................................................................7

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

5. FUNCTIONAL DESCRIPTION OF BTS LINK-104/108 REPEATER ................. 8

5.1. GENERAL DESCRIPTION.................................................................................8

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...................................................................................23

7. BTS LINK-104/108 REPEATER SPECIFICATIONS .......................................... 26

7.1. ELECTRICAL SPECIFICATIONS-RF & OPTICAL ................................................26

7.2. ELECTRICAL SPECIFICATION POWER REQUIREMENT ......................................26

7.3. EXTERNAL ELECTRICAL/OPTICAL INTERFACE.................................................26

7.4. MECHANICAL SPECIFICATION .......................................................................27

7.5. ENVIRONMENTAL SPECIFICATION..................................................................27

7.6. CONTENTS OF DELIVERY .............................................................................27

7.7. SAFETY PRECAUTIONS-HANDLING OPTICAL EQUIPMENT ................................27

8. INSTALLATION .................................................................................................... 29

8.1. PREPARATION SHEET-PRE INSTALLATION .....................................................29

8.2. MOU INSTALLATION....................................................................................30

8.3. OPTICAL FIBER LAYING................................................................................32

8.4. INSTALLATION-SBROU ...............................................................................33

8.5. DOS & DON’T DOS ......................................................................................34

8.6. CHECKLIST-POST INSTALLATION...................................................................35

9. SYSTEM MAINTENANCE.................................................................................... 37

9.1. GENERAL ...................................................................................................37

9.2. PREVENTATIVE MAINTENANCE .....................................................................37

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1. Document History

Document

Number Document

Name Date Compiled

by Approved

by Revision

5920 0020 100 BTS Link-

104/108

Repeater

March

2008 Inderjit Rajeev Sarup

Revision Revised Section Date

Intentionally Left Blank

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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

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.

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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

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.

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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-104/108

Repeater.

4.2. Scope

This document is the product description of the Shyam BTS Link-104/108

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

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

LED Light Emitting Diode

LNA Low Noise Amplifier

LO Local Oscillator

MOU Master Optical Unit

MS Mobile Station

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

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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.

[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.

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5. Functional Description of BTS Link-104/108 Repeater

5.1. General Description

The BTS Link-104/108 Repeater System is designed to provide

indoor/outdoor coverage (depending on the location of the remote optical

unit installed) and is equipped to handle signals in AWS band. It provides

highly selective amplification in the pre-set band. The detail of operating

AWS service frequency band is given below:

Frequency Band:

Down Link: 2110 MHz to 2155 MHz

Up Link : 1710 MHz to 1755 MHz

The Customer is requested to refer to the sticker on the repeater unit

giving the details of frequency band set.

• The BTS Link-104/108 repeater system is a single band

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

point coverage.

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

Remote Optical Units (SBROUs), maximum 4 or 8, installed at

different sites. Two versions are available; BTS Link-104 version

supports up to 4 SBROUs and BTS Link-108 supports up to 8

SBROUs. MOU & each of the SBROUs are connected through a

pair of optical fibers.

• For providing coverage in a large area, SBROUs with RF power of

+40dBm can bs installed.

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

BTS from where the signals are to be received and OFC

terminations destined for SBROUs 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 SBROUs are propagated as optical

signals, which are insensitive to any electrical

interference/disturbances.

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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 RF signals from BTS in the DL

path and optical signals from different ROUs in the UL path. It consists

of modules/units:

• Duplexers

• 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.

II) Single Band Remote Optical Unit (SBROU): Depending on the

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

locations where coverage is desired. Each of the SBROUs is comprised

of modules/units:

• Optical Receiver Unit (ORX)

• Power Amplifier

• Duplexer

• LNA

• Optical Transmitter Unit (OTX)

• Power Supply Unit

• Gain module

• Supervisory & ASK module

• A metallic housing (Indoor application/outdoor application)

accommodates all the above units/modules. Arrangement is

made for dissipation of heat generated in the unit; the outdoor

housing conforms to IP-65.

5.2. Indoor/Outdoor Coverage

The indoor or outdoor coverage provided by the system shall depend on the

location of SBROU installed at distant site.

When outdoor coverage is desired, SBROU is installed at the particular site.

Refer to Figure 1 where relative positions of MOU & SBROU are indicated

for outdoor application.

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Figure 1: Typical Outdoor Application of BTS-Link 104/108

Optical Fiber

B

T

S

Directional Coupler

MOU Installed inside BTS enclosure

RF Cable Clamp

SBROU

Server

Antenna

Power supply

cable

RF cable from

antenna

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

6.1. General

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

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

attenuation, temperature, status of door 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 & ROU with

a 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 2: Login Repeater

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Functions as described below are carried out through CMC software:

I) Login Repeater (Figure 2)

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

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

SBROU. To login:

• 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” will be

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

There are two type of user viz. ADMINISTRATOR and SUPERVISOR. If

user logged in as an ADMINISTRATOR, all the operation through the

CMC can be carried out. 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 3 are carried out,

information specified is:

• Repeater ID

• Repeater Location

Configurable parameters as per Figure 4 are:

• Out put power limit UL

• 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 5 is displayed through following set

(configurable) parameters:

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Downlink

• RSSI

• Attenuation inserted

Uplink

• Out put Power

• Attenuation inserted

Optical Power

• OTX 1 & OTX 2 [Both units are equipped for 8 SBROUs]

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

Power Supply

• 5.5 V

Temperature

• Displays the system temperature

Alarms

• Alarms as per categorization viz. Critical, Major and Minor.

Clicking at “detail alarms” can further check the associated

detail.

In addition to above it also displays:

• MOU Serial No.

• Location of MOU

• Firmware incorporated in the unit

• Date

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Figure 3: MOU ID Settings

Figure 4: MOU Settings

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Figure 5: MOU Status Monitoring

C) Alarms-MOU (Refer Figure 6)

Alarm Observed Detail

DL RSSI low It indicates that the RSSI has gone below the set limit.

DL RSSI High It indicates that the RSSI has exceeded the higher limit set.

UL Power High When the high power than the set limit is detected, it is indicated.

LD off

[OTX-1 & OTX-2] It indicates the OFF status of LD corresponding to OTX-1/OTX-2.

LD Power Low

[OTX-1 & OTX-2] It indicates the detection of low optical power in LD corresponding to

OTX-1/OTX-2.

LD Power High

[OTX-1 & OTX-2] It indicates the detection of high optical power in LD corresponding to

OTX-1/OTX-2.

Photo Diode Power Low

[ORX-1 to ORX-8] It indicates the detection of low optical power in PD corresponding to

ORX-1 to ORX-8.

Photo Diode Power High

[ORX-1 to ORX-8] It indicates the detection of high optical power in PD corresponding

to ORX-1 to ORX-8.

Power Supply Failure of derived DC voltage is indicated.

System Temperature

High When the system temperature exceeds the set limit, alarm will be

generated.

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Figure 6: MOU Alarm Monitoring

Figure 7: SBROU Settings

d) Settings in SBROU [Figure 7]

After login, following setting is carried out:

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Downlink

• Output power limit

• PA ON/OFF

Uplink

• RSSI upper limit

• Attenuation inserted

Optical

• Laser Diode ON/OFF

Figure 8: ROU Status Monitoring

e) SBROU Status (Refer Figure 8)

Status of SBROU as per Figure 8 is displayed through following set of

(configurable) parameters:

Downlink

• Auto attenuation insertion

• Output power

• Temperature

Uplink

• RSSI

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Optical Power

• LD power

• PD power

In addition to above parameters, following parameters are also displayed:

• Derived DC voltages

• System temperature

• Alarms – Category [Detail can be seen on Alarm window]

Figure 9: SBROU Alarms Monitoring

f) Alarms-SBOU (Refer Figure 9)

Alarm Observed Detail

PA OFF DL

(Manual) When the user sets PA ON / OFF command as OFF, alarm will be

generated.

PA OFF DL (Auto) When the system sets the PA OFF, alarm will be generated.

PA Power High DL When PA power exceeds the limit set by the user, alarm will be generated.

PA Power Low DL When PA power goes lower than the limit set by the user, alarm will be

generated.

PA Temperature

High It indicates that the temperature has exceeded the limits.

LNA UL LNA failure is indicated.

Laser Diode OFF Failure of Laser Tx power is indicated.

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LD Power Low It indicates that the LD power has gone below the set limit.

LD Power High It indicates that the LD power has exceeded the set limit.

PD Power Low It indicates that the PD power has gone below the set limit.

PD Power High It indicates that the PD power exceeded the set limit.

Power Supply Failure of AC mains, 5.5 V DC & 27 VDC are indicated through separate

LEDs.

VSWR Alarm When antenna port is open or mismatch, alarm will be generated.

Door Open When the door of the outdoor system is open, alarm will be generated. It is

applicable to SBROU for outdoor application.

Minimum monitoring interval is 3 seconds i.e. after every 3 seconds data on

the monitoring window will be refreshed.

For Alarm

A red indication is present.

A green indication is for No alarm.

It is possible to have access to any of the SBROUs (Refer Figure 10) from

MOU trough ASK modem and all the functions like, configuration, monitoring

Status & alarms can be carried out. MOU can be accessed through remote

external modem (optional) for above functions.

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Figure 10: Selection of SBROU for Status & Alarm Monitoring

III) Communication Setting [Figure 11]

It is possible to establish communication with MOU & ROU through the

software incorporated in the system.

i. Local Connection

In this type of connection, user computer COM Port and system’s

USB port are connected directly using cable. Proceed 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”.

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Figure 11: Communication Settings

ii. Remote Connection

In this type of connection, User communicates from/to remote

location with the system using wireless External Modem.

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 GSM 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 wireless

Connection is established.

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Click the “DISCONNECT” on the DIALUP window to disconnect

remote communication with the system.

IV) SECURITY [Figure 12]

Password Setting

Select Password setting from Security menu to change the existing

Password. If logged in user is SUPERVISOR, the password for

SUPERVISOR only, can be changed.

The ADMINISTRATOR can perform all the functions including change

of the password for ADMINISTRATOR & SUPERVISOR.

Figure 12: Password Setting

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 after

closing/switching OFF & ON the repeater.

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6.3. Block Description

Main constituents of the system are:

I) Master Optical Unit (MOU)- Figures 13 & 14

The MOU is installed at the indoor location close to the BTS. In the DL

path, the received RF signals from the BTS are fed to the MOU, which

converts the RF signals to a stream of optical signals to be applied to the

optical fiber for transmission to SBROUs installed at different locations.

The optical signals between MOU & each of the SBROUs are propagated

on two single mode fibers.

In the UL path, the optical signals received from each of the SBROUs are

converted back to the RF signals in the preset frequency band for

application to the BTS.

The connectivity between the MOU and the BTS is through low loss RF

cable via a directional coupler.

Modules in the MOU

a) Duplexer: It is provided in the RF path interfacing BTS for providing

isolation between the DL & UL frequency bands (1710 MHz to 1755

MHz & 2110 MHz to 2155 MHz).

b) Optical Transmitter Unit (OTX): It receives RF signals in the preset

frequency band in the DL path & converts the same to the optical

signals in 1310 nm wavelength at a level of –1.5dBm±1dBm for

application to the optical fiber. One OTX unit is equipped in MOU for

BTS Link-104 & two OTX units are equipped for BTS Link-108.

c) Optical Splitter 1:4 Unit: As indicated earlier, one MOU supports 4

SBROUs or 8 SBROUs at different locations, the optical signals from

each OTX are split in this unit in to 4 in case of BTS Link-104. Two

splitters shall be equipped in case of BTS Link-108.

d) Optical Receiver Unit (ORX): 4 ORX or 8 ORX (depending on the

version) units are equipped in the MOU and each of them receives

optical signals in 1550 nm wavelength from the SBROU in the UL

path. Stream of out put optical signals from each ORX unit is

converted in to RF signals for application to BTS at the desired

power.

e) Power Supply Unit (PSU): The unit gets input of –48 V DC or 100 to

240 V AC (depending on option) for deriving different DC voltages

required for other active units in the MOU.

f) Gain Module: It is available after ORX in the UL path for making RF

signals available for application to the BTS.

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g) Supervisory & ASK Modem: Supervisory and ASK modem enable

the monitoring the status of MOU & SBROUs at different locations

and the information can be extracted through USB port interface

available in the front panel.

II) Optical Fiber & Patch Cords: It is very important part of the system,

which connects MOU with SBROU through two fibers. Two single mode

optical fibers are needed between the MOU and each SBROU. Fiber

carrying signals from the specific SBROU is terminated at the

corresponding ORX in the MOU likewise; fiber carrying signals for

specific SBROU is terminated at one of the splitter ports.

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III) Single Band Remote Optical Unit (SBROU): It houses the following

modules:

a) Optical Receiver Unit (ORX): One such unit is provided in the

SBROU, which receives the optical signals in the 1310 nm

wavelength in the DL path from MOU and converts the same to RF

signals in the preset frequency band.

b) Power Amplifier (PA): The PA unit is responsible for generating the

desired RF power for application to the server antennas. It is provided

in the DL path and the gain of the amplifier is set in accordance with

RF power required.

c) Duplexer: It is provided to isolate the DL & UL RF signals. It

interfaces with the server antenna.

d) Low Noise Amplifier (LNA): It is provided in the UL path after the

Duplexer to provide the amplification to the RF signals.

e) Optical Transmitter Unit (OTX): It receives RF signals in the preset

frequency band in the UL path & converts the same to the optical

signals in 1550 nm wavelength at a level of +4±1dBm for application

to the optical fiber. One OTX unit is equipped in ROU.

f) Power Supply Unit (PSU): One PSU is equipped in the ROU for

deriving DC voltages required for operation of different devices, it gets

AC in the range of 140-270 V, 47/63 Hz.

g) Supervisory & ASK Modem: Supervisory and ASK modem enable

the monitoring the status of MOU & SBROUs at different locations

and the information can be extracted through USB interface.

h) Gain Modules: One is provided between ORX and PA in the DL path

for enabling generation of the desired RF band. Another one is

provided with the OTX unit.

iv) Server Antenna: The RF signals from SBROU are distributed to the

mobile users through server antenna mounted at the appropriate spot

from where the intended area can be provided with coverage. For

indoor coverage, a set of server antennas at different spots at indoor

locations is installed. For outdoor coverage, omni antenna is mounted

at outdoor location. In both cases, antenna should be of appropriate

gain & required frequency band.

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7. BTS LinK-104/108 Repeater Specifications

7.1. Electrical Specifications-RF & Optical

S.NO. Parameter Specifications for MOU

Specifications for

SBROU

1. Optical

Wavelength (TX) 1310 nm 1550 nm

2. Optical

Wavelength (RX) 1550 nm 1310 nm

3. Frequency Band

2110 MHz to 2155 MHz

(DL)

1710 MHz to 1755 MHz

(UL)

2110 MHz to 2155 MHz

(DL)

1710 MHz to 1755 MHz

(UL)

4. Optical Power TX

–1.5dBm±1dBm +4dBm±1dBm

5. RF power options

in DL path - +40dBm±1dBm

6. Impedance at RF

ports 50 Ohms 50 Ohms

7. Spurious

Emission < -36dBm @ 9 KHz to 1

GHz, <-30dBm @ 1 GHz

to 12.75 GHz

< -36dBm @ 9 KHz to 1

GHz, <-30dBm @ 1 GHz

to 12.75 GHz

8. System Noise

figure ----------------5dB max. --- ------------------------------

9. Group delay

without fiber ---< 0.5 microseconds----

-------------------------------

7.2. Electrical Specification Power Requirement

S.NO. Parameter Specifications for MOU Specifications for ROU

1. Power

Supply -48 V DC 140-270 V AC, 47/63 Hz

2 Power

consumption

(Approx.)

60 watts (Fully equipped) 200 watts

7.3. External Electrical/Optical Interface

S.NO. Parameter Specifications for MOU Specifications for ROU

1. RF Port N-type N-type

2. Optical Port

FC-PC FC-PC

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7.4. Mechanical Specification

S.NO. Parameter Specifications

for MOU Specifications for ROU

1. Dimensions

(w x h x d)

485x400x135 mm

(19x16x5 inches) 700x385x210 mm (27x15.2x8inches)

2. Weight

(Approx.)

12 Kg. (26 lbs.) 25 Kg. (55 lbs.) +37dBm

3. Housing Metal Housing for

Indoor application Metal Housing for outdoor application

4. Grounding

Connection

- Bolt (Outdoor Housing)

5. Housing

Color

Grey Grey

6. Cooling Convection Convection

7.5. Environmental Specification

Conditions Specification

Operating Temperature -20oC to +550C (-40F to +1310F)

Storage Temperature -300C to +800C (-220F to +1760F)

Enclosure Outdoor application requirement

7.6. Contents of Delivery

ITEMS

QUANTIT

Y

Repeater BTS Link-104/108 MOU 1

Repeater BTS Link-104/108 SBROU As per requirement

PC interface cable for USB port

As per requirement

Power cable with 3 pin pug

As per requirement

Operation & Installation manual

As per requirement

CD containing th

e application software

As per requirement

Wireless Modem (Optional)

As per requirement

Mounting Clamps with Nuts

-

bolts

As per requirement

7.7. Safety Precautions-Handling Optical Equipment

Special care has to be taken while handling the optical equipment to avoid

damage not only to the equipment but also to the technicians/Engineers

who are handling the equipment. MOU and SBROU are equipped with

Lasers; direct exposure to the human eyes must be avoided. Though the

Lasers used in the equipment are of low power and are classified as class

III B (norm EN60825) even then enough care needs to be taken to avoid

exposure.

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Optical connectors for single mode fibers are designed for sub micron

tolerances.

Even a small particle of dust shall cause excessive loss & adversely affect

the performance:

For safety reasons & optimum performance, following points need attention:

• The optical connectors should never be left in open condition to avoid

entry of dust/moisture etc.

• When working with the optical connectors or the optical fiber, check at

each end that both optical transmitters are switched off.

• The connectors should be cleaned regularly with ethyl alcohol and

tissue paper; the tip should not be touched with bare hands.

• The connectors are very delicate in nature therefore proper aligning

without applying excessive force should carry out removal & insertion.

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8. Installation

8.1. Preparation Sheet-Pre Installation

1. General

Application: Outdoor

Service Band: AWS

Frequency Band DL: 2110 MHz to 2155 MHz

Frequency Band UL: 1710 MHz to 1755 MHz

Number of SBROUs installed at different sites:

2. Master Unit

Parameter Remarks

BTS power

Estimated Feeder Loss between BTS & Coupler

Estimated Coupling loss (in coupler)

Estimated Feeder loss between coupler & Master

unit

Estimated Input RF power in DL to Master unit

Arrangement for termination of optical fibers

Optical power in link path (DL)

Estimated RF power in UL

3. Optical Path

Parameter Remarks

Optical Fiber length between MOU-ROU 1……4/8

Estimated optical loss between MOU-ROU 1……4/8

Estimated optical signal level at each ROU input in

DL

Estimated optical signal level at MOU from each of

the SBROUs

4. Remote Unit (s)

Parameter Remarks

Proposed attenuation in DL

Proposed attenuation in UL

Arrangement for termination of optical fibers

Desired power at server antenna in DL

Proposed gain setting in DL

Date: …………. Prepared by……………………….

Site Address: ……………..

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8.2. MOU Installation

As mentioned earlier in this document, the MOU is placed at indoor location,

which is close to the BTS from where the signals are to be fed through

directional coupler.

Following points need consideration:

• The MOU should be installed at the spot where optical fiber ends are

terminated and is a secured place where unauthorized access is

avoided.

• The length of RF coaxial cable route from MOU to the BTS via

directional coupler should also not be excessive & sharp bends are to

be avoided to minimize losses.

• MOU is operated from –48 V DC, this supply either from battery or from

a separate power pack operated through AC should be available.

• The site should be easily accessible by the maintenance staff.

• The environment should be free from excessive moisture, chemical

fumes and ultra-violet radiations.

• The environment is not subjected to any Automobile Ignition noise,

Generator noise etc.

Installation Tools

a. Standard wrenches/screwdrivers/cable stripper/cable cutter/pliers

set for installing the system and antennas. (Refer to the

manufacturer’s recommendations for installing the antennas).

b. RF cable connecting tool for fixing connectors.

c. Multi-meter.

d. Optical power Meter.

Termination/Connections at MOU: Connections as detailed below need to

be carried out:

• Optical fibers for connectivity to SBROUs at different locations are

required to be terminated on MOU. Two fibers are needed for each

of the SBROUs.

• RF connection for transfer of signals from/to BTS.

• Power connection for extending –48 V DC to MOU.

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Figure 16: Termination at MOU

Important:

• Continuity/short circuiting of RF coaxial wherever used should

be checked before making connections.

• Continuity of each fiber to the respective ROU should be

ensured.

• The system should not be switched ON till the installation is

completed and settings in the system are made.

• No optical connector should be left open.

Commissioning MOU:

Preliminary verify the correct operation of MOU:

• Visual inspection of MOU cards before use, for any mechanical

or component damage.

• Insert the cards in the designated slot only.

• Switch-ON the MOU sub rack.

• Measure the optical power at each of the optical ports in DL.

• Verify the LED status through CMC software.

Important:

a. Continuity/short circuiting of RF wherever used should be checked

before making connections.

b. Continuity of each fiber to the respective SBROU should be

ensured.

c. The system should not be switched ON till the installation is

completed and certain settings for the system is made.

d. No optical connector should be left open.

USB Port

To BTS Coupler

Opti

cal Tx & Rx

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8.3. Optical Fiber Laying

The connectivity between the MOU and SBROUs at different sites is through

optical fibers. In case the fibers are not available, the laying of optical fiber

cable has to be undertaken. Single mode fibers are used for which two fibers

are required between the MOU and each of the SBROUs.

Depending on the situation, the type of optical fiber cable could be of aerial

type or of buried type. In aerial type, the OFC is firmly fixed/clamped on the

poles/pillars in the open atmosphere and such cables are normally armored

to provide adequate protection/strength. The advantage of using such able is

that the installation job can be completed in less time. However, the cost of

the cable is higher. Whereas the buried type, the OFC is placed in pipes

which are laid underground.

A variety of cable designs are available to meet the requirements of different

installations. Some of the designs are given below:

• Loose tube construction: The fiber lies loosely inside a surrounding

plastic tube so that it can adjust itself when the cable is bent; micro

bending is almost completely eliminated by this technique. Loose tube

cables are preferred for long distance links and for almost all outdoor

applications.

• Tight buffer construction: The buffered fiber is completely enclosed

in a cushioning material (secondary coating up to an external diameter

of 900 micro meters) to improve crush resistance and vibration

isolation, minimizing micro bending. Tight buffer cables are usually

adopted for outdoor applications because they offer small cross-section

dimensions and small bending radius.

Termination of fibers on MOU and SBROU

Under the normal circumstances, two fibers are utilized for connecting

MOU to a particular SBROU, one for the UL & other for the DL path.

Every fiber must be labeled in order to indicate the connection particulars

& route.

Sharp bends on the pigtails are to be avoided while making connections.

The optical connectors must be cleaned thoroughly to avoid entry of dust

and obstructions to the optical signals.

The guidelines for OFC laying are:

• The exact route may be decided before starting the laying work.

• Extra length of OFC may be kept for future use at each end.

• The OFC should be free from all optical connectors and should be

sealed at both the ends at the time of laying.

• Sharp bends, extra pressure and pull should be avoided during

laying to avoid damage to the fibers.

• Proper splicing should be carried out for minimum splice losses.

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• All technical specifications from the OFC supplier should be

followed.

• The termination of OFC at each end should be done at FDFs, which

should be located close to the equipment.

• Connection between the OFC (terminated at FDF) and the

equipment should be carried out through optical jumpers with FC-

PC connectors.

8.4. Installation-SBROU

Outdoor Coverage: Following points need to be considered

• Availability of AC mains in the range 140-270V 47/63 Hz for energizing

the SBROU

• It is installed at outdoor site, so it should be in the secured area where

unauthorized access is avoided.

• The site should be close to the fiber termination point.

• It is mounted either on pole or on the wall; enough space should be

available for opening the unit door for testing & maintenance staff.

• Outdoor antenna with proper frequency band & gain is installed outside

preferable at a height for distribution of signals to the mobile users.

Termination/Connections at SBROU: Connections as detailed below need

to be carried out:

• Optical fibers for connectivity to MOU. Two fibers are needed for

each of the SBROUs.

• RF connection for transfer of signals from/to antennas.

• Power connection to the AC mains.

• Grounding of the unit.

Commissioning SBROU:

• After making the desired connections, Switch “ON” The power

supply.

• Check the LED status at ROU.

• Measure the Optical Output Power. It should be +4±1dBm.

• If any Parameter is not within the specified limits, check the

connections and observe for the alarm.

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8.5. Dos & Don’t Dos

1. The BTS-104/108 system is comprised of two independent units viz.

Master Optical unit & Single Band Remote Optical Unit; the site selection

should be made with great care for maximum efficiency.

2. The site(s) should be accessible for maintenance purposes.

3. Arrangement is to be made to avoid unauthorized access to the system.

4. Proper grounding of the outdoor units is required to be done to avoid

damage to the system.

5. The housings for outdoor applications must be waterproof.

6. Stable power supply for all units should be ensured.

7. The route of Cables to/from antennas should be short to limit the cable

losses and should be free from sharp bends & kinks.

8. Local standard of cabling should be followed.

9. Route of cable from antenna to the system should be secured to avoid

damage and connections have to be made water tight to prevent the entry

of water in the equipment.

10. There should be adequate separation between the antenna system and

power lines.

11. The Master unit draws RF input from BTS; its level should not be

excessively high for satisfactory performance.

12. The optical fiber termination should be carried out with care and no optical

port left open when the system is ON.

13. Bending of optical fiber cable at acute angles must be avoided

14. The estimation of coverage area should be confirmed.

15. The system should be configured for normal traffic after actual

measurement of:

a) RF power in the DL

b) RF power in the UL

16. Feedback regarding performance of the system must be obtained from the

user.

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8.6. Checklist-Post Installation

Service Band: AWS

Frequency Band DL: 2110 MHz to 2155 MHz

Frequency Band UL: 1710 MHz to 1755 MHz

A. Coupler Installation

S.NO. Point(s) To Be Verified Remarks

1. 30 dB coupler installed on BTS main antenna

feeder

2. Type N connector closer to antenna terminated

with 50 Ohms

3. Type N connector closer to BTS connected to

donor cable

4. BTS operating normally with coupler installed

5. Coupler weatherproof

B. Master Unit Installation

S.NO. Point(s) To Be Verified Remarks

1. Grounding of the unit

2. Cable from coupler terminated at donor (BTS) port

3. Termination of optical fibers for different ROUs &

no optical fiber port is left open. Two fibers are

provided for each ROU.

4. -48 V DC cable connected to the Master unit

5. RF Cable protection ensured and outdoor

connections are waterproof

6. Precautions against excessive bending of optical

cable.

7. Labels showing cautions displayed

C. Master Unit Setup

S.NO. Point(s) To Be Verified Remarks

1. Master unit switched ON

2. Any error/alarm observed

3. RF signal strength in DL

4. Transmitting optical signal strength at relevant optical

port for each ROU

5. Received optical signal strength at relevant optical

port from each ROU

6. Loss for optical signals between MOU and each of

the ROUs is within limits.

7. RF power set in UL.

8. Attenuation inserted in UL.

D. Remote Unit Installation

S.NO. Point(s) to be verified Remarks

1. Ensure termination of optical fibers at optical Tx & RX

ports.

2. Grounding of the unit

3. RF cable connected between RF port and server

antenna.

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4. Cable to server antenna connected to server antenna

port

5. Mains cable connected to the Remote unit

6. RF Cable protection ensured and outdoor

connections are waterproof

E. Remote Unit Setup

S.NO. Point(s) To Be Verified Remarks

1. Remote unit switched ON

2. Any error/alarm observed

3. Received optical signals at RX port

4. Attenuator inserted for desired RF power

5. RF power set

6. Optical signal strength at TX port

7. Remote unit secured.

Any Other Remark/Comment:

Date Of Installation: ------------------------ Repeater ID: -------------------------------

Site Address: --------------------------------------------------------------

Name of the Installer: -----------------------------------------------------

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9. System Maintenance

9.1. General

The system normally operates without any operator intervention or

maintenance. If, in the unlikely event of a unit failure, the field replaceable

units (antenna unit, cables) should be checked for faults and the system

restored. The faulty unit can be removed and replaced with a spare while

the rest of the system is still operating. Soldering or local repair of the

modules should be avoided from better maintenance point of view. Faulty

module/unit should be replaced with genuine spares from Shyam Telecom

Limited only.

The power supply of the faulty unit should be isolated from AC mains and

DC power before any module is replaced. In the event of a system

malfunction, the status of the antenna systems should be checked as well

as the continuity of the cabling before replacing any modules within the

unit.

9.2. Preventative Maintenance

The BTS Link-104/108 does not require any preventative maintenance.

However, some of the common observations as tabulated below are

possible:

Observation Remark

No communication

between MOU & ROUs

a) Check if the MOU is ON. If it is not ON, check the

availability of –48 V DC for MOU. Make sure that –

48 V is available.

b) Check the alarms, if Laser diode/photo diode failure

is indicated. Verify functioning of OTX unit by

replacing with working unit. Also clean the optical

connectors wherever provided.

c) Check the optical power at each port connected to

the SBROUs. If it is available at each of the ports,

check the optical connectivity between MOU and

SBROUs.

RF power high in DL at

ROU

Check for the indication for alarm and insert an

additional attenuator to reduce the RF power.

RF power low in DL at

SBROU

Check for the indication for alarm and adjust the

attenuator to enhance the RF power.

Power high UL at MOU Reduce the level by inserting additional attenuator.

RSSI LOW/HIGH DL at

MOU

Adjust the attenuator in order to get rid off the alarm.

Also check the RF cable between the antenna and the

MOU.

Photo-diode failure at

MOU

It indicates a problem in the ORX unit. Check & verify

the ORX unit, if required replace it.

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FCC Statement:

FCC ID:S3CBTSLINK1048

This device complies with Part 2, 27 of the FCC Rules. Operation is

subject to the following two conditions: (1) this device may not cause harmful

interference and (2) this device must accept any interference received, including

interference that may cause undesired operation.

IC Statement:

Trade Name: SHYAM BTS Link-104/108 Repeater

Model No.: 104/108

IC: 5751A-BTSLINK1048

This device complies with RSS-131, RSS-102 of the IC Rules.

Warning

Changes of modifications not expressly approved by the manufacturer could void

the user’s authority to operate the equipments.

Antenna Information:

This device has been designed to operate with the antennas listed below, and having a

maximum gain of 16dB. Antennas not included in this list or having a gain greater than

16dB are strictly prohibited for use with this device. The required antenna impedance is

50 ohms.

Antenna (or equivalent) list:

1) Patch Panel Antenna ,16 dbi for outdoor installation

2) Yagi Antenna 12 dbi for outdoor installation

3) Patch Panel Antenna 9 dbi for indoor IBS installations

4) Omni Antenna 2 dbi for indoor IBS installations

To reduce potential radio interference to other users, the antenna type and its gain

should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more

than that permitted for successful communication.

WARNING! This equipment complies with FCC & IC radiation exposure

limits set forth for an uncontrolled environment. This transmitter must not

be co-located or operating in conjunction with any other antenna or transmitter.

For mobile or fixed location transmitters, the minimum separation distance is

greater than 120 cm (indoor server antenna) and 260cm (outdoor server

antenna), even if calculations that the MPE distance would be less.

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For Technical Support, please contact at any of the following addresses:

For Americas

Shyam Telecom Inc.

6, KILMER ROAD, SUIT D,

EDISON, New Jersy-08817 (USA)

For Europe

Shyam Telecom GmbH.

Frohsinnstrasse 16, 63739 Aschaffenburg, Germany

Tel: + 49-6021-45901-0 Fax: + 49-6021-45901-29

For ASEAN & Others

Shyam Telecom Ltd.

246, Phase IV, UDYOG VIHAR,

GURGAON – 122015 (INDIA)

Tel: +91-124-4311600 FAX: +91-124-4018117

Email:

contact@shyamtelecom.com

Shyam Telecom BTSLINK1048 BTS Link-104/108 Repeater User Manual

Shyam Telecom Inc. BTS Link-104/108 Repeater Users Manual

Users Manual

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