Shyam RF Series User manual

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RF / DB6M Series
O
OP PE ER RA AT TI IO ON N & & I IN NS ST TA AL LL LA AT TI IO ON N M MA AN NU UA AL L
5920 003
0 200 September 2010
D
DB B6 6M M( (Dual Band)
6 Sub-Band Repeater for Outdoor Applications
(FCC ID: S3CDB6M33SA and IC:5751A-DB6M33SA
for AWS and 700 LTE Upper C Sub-Bands only)
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
L
imited
.

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CONTENTS
1. Document History.........................................................................................4
2. Disclaimer......................................................................................................5
3. Safety Instructions and Warnings...............................................................6
3.1. Personnel Safety....................................................................................6
3.2. Equipment Safety...................................................................................6
3.3. Electrostatic Sensitivity..........................................................................6
4. Introduction...................................................................................................7
4.1. Purpose .................................................................................................7
4.2. Scope.....................................................................................................7
4.3. Definitions..............................................................................................7
4.4. References ............................................................................................8
4.5. General..................................................................................................9
5. Functional Description of DB6M Dual Band Repeater...............................9
5.1. General Description...............................................................................9
6. To Get started-Basic Software Control Of the system.............................11
6.1. General................................................................................................11
6.2. Terminal Set-up ...................................................................................12
6.3. Block Schematic Description ...............................................................26
7. DB6M Repeater Specifications..................................................................28
7.1. Electrical Specifications-RF...................................................................1
7.2. Electrical Specification Power Requirement ..........................................1
7.3. External Electrical Interface.................................................................29
7.4. Mechanical Specification .....................................................................29
7.5. Environmental Specification.................................................................29
7.6 Contents of Delivery............................................................................30
8. Installation...................................................................................................31
8.1. Preparation Sheet- Pre Installation......................................................31
8.2. Engineering Consideration...................................................................32
8.3. Installation Tools..................................................................................34
8.4. Installation Procedure..........................................................................34
8.5. Repeater Gain Settings........................................................................35
8.6. Commissioning ....................................................................................35
8.7. Dos & Don’t Dos..................................................................................36

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8.8. Checklist – Post Installation.................................................................37
9. Trouble Shooting........................................................................................40
10. System Maintenance.................................................................................41
10.1. General..............................................................................................41
10.2. Preventive Maintenance ....................................................................41
11. Shut Down Mechanisms……………………………………………………42

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1. Document History
Document
Number Document Name Date Compiled
by Approved by Revision
5920 0030
200 DB6M Dual Band Repeater September 2010 Inderjit Ramvir Singh
Revision Revised Section Date

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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
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 lightening protection. Damage to internal
modules, as a result of lightening is not covered by the warranty.
All specifications are subject to change without prior notice.

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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.
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
ESD = ELECTROSTATIC DISCHARGE SENSITIVE DEVICE
Observe electrostatic precautionary procedures.
CAUTION
CAUTION

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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.
The RFrepeater mentioned is tested thoroughly for maximum composite power.
There is provision of ALC / APC (automatic level control / automatic power
control) which limits the output power in DL path and in UL path beyond the
specified limit. It operates in LTS 700 band – upper C sub-band of 10 MHz BW
(CF in UL 781 MHz & CF in DL 751 MHz) and AWS band 10 MHz sub-band (
UL 1710-1755MHz, DL 2110-2155MHz). Donor antenna and server antenna
must be fixed on permanent structure with enough isolation between donor and
server antenna to avoid any possible oscillations.
4. Introduction
4.1. Purpose
The purpose of this document is to describe the electrical and mechanical
specifications, operation and maintenance of the DB6M Dual Band
Repeater.
4.2. Scope
This document is the product description of the Shyam DB6M Dual Band
Repeater for outdoor application.
4.3. Definitions
AGC Automatic Gain Control
ALC Automatic Level Control
APC Automatic Power Control
BCCH Broadcast Control Channel
BTS Base Transceiver Station
BSEL Band Selective

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CDMA Coded Division Multiple Access
CMC Configuration & Monitoring Console software
CMB Combiner Unit
CSEL Channel Selective
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
GSM Global System for Mobile communication
GUI Graphics User Interface
LAC Location Area Code of the BTS site
LED Light Emitting Diode
LNA Low Noise Amplifier
LO Local Oscillator
MS Mobile Station
MSC Mobile Switching Center
NMS Network Management System
PCN Personal Communication Network
PCS Personal Communication System
PSU Power Supply Unit
RF Radio Frequency
RMS Repeater Management System/Remote Monitoring
System
RSSI Received Signal Strength Indication
RTC Real Time Clock
SMS Short Message Service
TACS Total Access Communication System
TDMA Time Division Multiple Access
VFD Visual Florescent Display
UL (Uplink) Uplink signal direction (from mobile station via
repeater to base station)
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] ETS 300 609-4
Digital cellular telecommunications system (phase 2): Base Station

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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 rising 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.
•Antenna isolation to be achieved.
5. Functional Description of DB6M Dual Band Repeater
5.1. General Description
The DB6M dual band modular Repeater System is designed to provide
outdoor coverage and can handle signals in up to six sub bands maximum
with 3+3 configuration or as per requirement in two of the service bands,
used around the World by various service operators. It provides highly
selective amplification in the pre-set frequency bands. The details of
operating service frequency bands are given below:
SNo Service Band DL Frequency (MHz) UL Frequency (MHz)

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S.No. Service Band DL Frequency (MHz) UL Frequency (MHz)
1. SMR 800 851-866 806-821
2. Cellular 869-894 824-849
3. SMR 900 935-941 896-902
4. EGSM 925-960 880-915
5. GSM 900 935-960 890-915
6. DCS 1805-1880 1710-1785
7. PCS 1930-1990 1850-1910
8. UMTS 2110-2170 1920-1980
9. AWS 2110 – 2155 1710 - 1755
10. LTE 700 Upper C, A and B sub-bands are available
The Customer is requested to refer to the sticker on the repeater unit giving
the details of frequency bands set &the bandwidths of different sub bands
equipped in the repeater.
**Only sub bands of AWS and LTE700 Upper C are for FCC and IC approval under FCC ID:
S3CDB6M33SA and IC:5751A-DB6M33SA.
Models: OD6R2-Equipped with 2sub bands
OD6R3-Equipped with 3sub bands
OD6R4-Equipped with 4sub bands
OD6R5-Equipped with 5sub bands
OD6R6-Equipped with 6sub bands
•The DB6M repeater is designed to provide optimal coverage, the
area covered shall primarily depend on RF power radiated, manmade
structures in the area (high rise buildings), the geographical topologies
and availability of reflecting surfaces.
•The ultimate performance &coverage shall depend on the
obstructions blocking / absorbing of the RF signals by various objects
between the Server antenna of RF repeater and the mobile users.
•The repeater is specifically designed for the Operators who are
allocated frequency spectrum in different service bands and non-
contiguous sub bands are specified.
•The repeater adopts duplex mode and bi-directional amplification for
UL & DL signals between the base station and mobile users.

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•It receives signals from the BTS through a DONOR antenna (highly
directional outdoor antenna)and distributes the signals to mobile users
after amplification through SERVER antenna(s) of directional type in
the DL.
•In the UL, the signals from the mobile users are picked up by
SERVER antenna and retransmitted to the BTS after amplification.
•The repeater finds applications in tunnels, highways, large size
airports, and open market areas etc. where traffic requirement is high.
•The system can be incorporated with optional Remote Management
System (RMS) which can be used for configuration and monitoring
the status of the link. It helps not only speedy maintenance but remote
configuration also through wireless modem.
The repeater consists of the following modules/units:
•LNA
•Converter modules
•Power amplifiers
•Power supply module
•Quad-plexer for segregating bands with DL/UL directions
•Supervisory module
•Modem with rechargeable battery &antenna (Optional)
•External modem with power adapter &antenna along with software
CD for RMS (optional)application
•Ametallic case houses the repeater. Arrangement is made for heat
dissipation especially for amplifiers, which generate more heat. The
choice of suitable metal as the case material gives a lightweight design
with good heat conduction and waterproof protection. The housing
conforms to IP65 (NEMA 5) standards.
6. To Get started-Basic Software Control Of the system
6.1. General
The system 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.

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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 with the help of laptop /
PC connected to the repeater by means of local USB serial interface or
remotely via wireless modem (Optional) mounted inside the repeater. The
laptop/PC should be loaded with the CMC software available on the
supplied CD along with the USB driver.
I) Login Repeater (Figure 3)
After running the Configuration &Monitoring Console (CMC), user needs
to login the repeater, sequence as under, may be followed:
•Click the “LOGIN” on the command bar.
•Select the user type (ADMINSTRATOR or SUPERVISOR).
•Enter the password.
•Finally click the “OK”.
Amessage “Logged in successfully”will appear on the screen after
successful login. There are two types of users viz. ADMINISTRATOR
and SUPERVISOR. If user logged in as an ADMINISTRATOR, all
the functions can be performed through the CMC. By default, the
password for both users 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
Configuring system means setting the system parameters for operation
as per the requirement at site.
Click on the command bar to display the configuration window, which
allows access to all the configurable repeater parameters. User can login
for configuration of parameters.
•SET is for updating the repeater parameters.

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•READ is for confirming the parameters set during the
configuration.
Information as detailed below can be incorporated after the
“CONFIGURATION” window is activated:
Figure 3: Login Repeater
a. Repeater ID: User can assign a unique repeater ID to each repeater
installed. Up to 10 characters are allowed in this field. (Figure 4)
b. Repeater Location:User can assign the address of location where
repeater is installed. Up to 30 characters are allowed in this field.
(Figure 4)
c. Sub Band ON/OFF Settings:The system can be equipped up to six
sub bands; the sub bands equipped are specified as ON in this window
while others remain in OFF mode. (Figure 5)
d. Sub Band (UL/DL Frequency Bands) Settings:The frequency
bandwidths of all the 6 sub bands or loaded sub bands in UL & DL
are defined. (Figure 6)

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e. Thresholds Output Power:Maximum Output Power limits in UL &
DL for both the bands are set. A“PA Power high” alarm will be
generated when PA power exceeds the upper limit. (Figure 7)
Figure 4: Repeater ID/Location Settings

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Figure 5: Sub Bands ON/OFF Settings
Figure 6: Frequency Settings-Sub bands

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f. Threshold RSSI Limits: Lower and Upper RSSILimits in DL & UL
paths for both the bands are set. A RSSI High alarm will be
generated when RSSI exceeds the set upper limit, and a RSSI Low
alarm will be generated when RSSI goes below the set lower limit
set. Upper range that can be set varies from -35 to -55dBm. Lower
range that can be set varies from -75 to –95dBm. (Figure 7)
g. PA ON/OFF: User can set uplink and/or downlink PA as ON or
OFF independently for testing/maintenance purpose at the time of
installation for both the bands. (Figure 8)
After completing the installation it must be in ON condition only.
After setting parameters in the relevant (configuration)window, it can
be closed by clicking at “Close”.
Figure 7: Threshold Settings

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Figure 8: PA ON/OFF Settings
III) Monitoring (Figure 9)
In this window, the status of the system is monitored for the following
parameters/conditions:
S.NO. Parameters/Conditions Remarks
1 RSSI (DL) Band 1Real time DLsignal level is displayed.
2 RSSI (DL) Band 2Real time DLsignallevel is displayed.
3 RSSI (UL) Band1Real time ULsignal level is displayed.
4 RSSI (UL) Band2Real time ULsignal level is displayed.
5 Attenuation Band 1 (DL) Indicates attenuation inserted in the system for
the band in DL.
6 Attenuation Band 2 (DL) Indicates attenuation inserted in the system for
the band in DL.
7 Attenuation Band 1 (UL) Indicates attenuation inserted in the system for
the band in UL.
8 Attenuation Band 2 (UL) Indicates attenuation inserted in the system for
the band in UL.
9 Output Power Band 1(DL) PAoutput power in dBm is displayed.
10 Output Power Band 2(DL) PAoutput power in dBm is displayed.
11 Output Power Band 1(UL) PAoutput power in dBmis displayed.
SNo
Parameters/Conditions
Remarks

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12 Output Power Band 2(UL) PAoutput power in dBmis displayed.
13 APCfor Band 1 (DL) Real time APCfor the band in dBis displayed.
14 APCfor Band 2 (DL) Real time APCfor the band in dBis displayed.
15 APC for Band1 (UL) Real time APCfor the band in dBis displayed.
16 APCfor Band 2 (UL) Real time APCfor the band in dBis displayed.
17 Power supply 5.5 V, A& BReal time value of 5.5V DC derived supply is
indicated.
18 Power supply 27 V, A Real time value of 27V DC derived supply is
indicated.
19 Internal Battery voltage
Real time value of internal battery equipped. It
is equipped when wireless modemis
incorporated.
20 System Temperature The real time system temperature is displayed.
21 Alarms
Displays if any alarm is present and the
category of alarm i.e. critical, major or minor is
also shown.
IV) Alarms (Figure 10)
Details of alarms displayed are detailed below:
S.No. Alarm Indication Remarks
1 DL RSSI Low (Band1 & Band 2) When the RSSI low is detected to be
lower than the set limit in any of the two
or both bands, alarm is generated.
2 DL RSSI High (Band 1& Band 2) When the RSSI high isdetected to be
higher than the set limit in any of the two
or both bands, alarm is generated.
3 DL PA Power High (Band 1& Band 2) When PA Power in DLpath exceeds the
set upper limit in any of the two or both
bands, alarm is generated.
4 DL PA Power Low (Band1& Band 2) When PA Power in DLpath exceeds the
set lower limit in any of the two or both
bands, alarm is generated.
5 DL Auto PA OFF (Band 1&Band2) When PA Auto OFFis detected in any
of the two or both bands in DL path, alarm
is generated.
6 DL Manual PA OFF (Band1 & Band 2) When PA Manual OFFisdetectedin
any of the two or both bands in DL path,
alarm is generated.
7. ULAuto PAOFF (Band 1&Band 2)When PA Auto OFFis detected in any
or the twoor both bands in UL path,
alarm is generated.
Remarks
Alarm Indication
S.No.

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8 UL Manual PA OFF (Band 1& Band
2)When PA Manual OFFisdetected in any or the two or both bands in UL
path, alarm is generated.
9 System Temperature High When system Temperature exceeds the
upper limit, alarm is generated.
10 Synthesizer failure (For equipped sub
bands in DL& UL) When the Synthesizer in any of the equipped sub bands fails, relevant alarm
is displayed.
11 VSWR (DL) It indicates that the mismatch has
occurred in DLdue to which VSWR
value has exceeded 1.5:1.
12 VSWR (UL) It indicates that the mismatch has
occurred in UL due to which VSWR
value has exceeded 1.5:1.
Monitoring interval is 3seconds i.e. after every 3 seconds data on the
monitoring window is refreshed.
Red indication is for Alarm present.
Green indication is for No Alarm.
VFD (Visual Florescent Display): This display facilitates configuration &
monitoring of the system without connecting the PC/Laptop at the USB port.
Press buttons are provided on the VFD strip with following markings with LEDs
to display alarm conditions if any:
•Menu [Status and Configuration captions are visible; either of the two
can be selected at a time].
•UP [It facilitates shifting of arrow (marker)up in Menu to select the
desired function].
•Down [It facilitates shifting of arrow (marker) down in Menu to select the
desired function].
•ENT [It enables to view different parameters/conditions prevailing in
the system depending on function selected through MENU viz.
configuration or status by pressing].
•ESC [It facilitates restoring the original state].

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Different LEDs are provided to show following alarm conditions:
ALARM PANEL DETAILS
S.No. ALARMS DL UL
1PAOFFMAIN ••
2 PA OFF AUTO •• FUNCTION
3PAPWRLOW ••
4PAPWRHIGH •• MENU ESC UP DOWN ENT
5LNAALARM •• • • • • •
6VSWRALARM ••
7SYSTEMPHIGH
8DCFAIL
9DOOROPEN
VFD DISPLAY
•
•
•
NOTE: An alarm depends on the Limits set in Threshold Settings as well as
Alarm Settings by user.
Figure 9: Monitoring (Status)