PBE Europe as Axell Wireless 55-1549BDA UHF Remote Repeater System 55-154901 User Manual Weehawken River Portal

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Weehawken Tunnel Radio
Remote Repeater System
User/Maintenance Handbook
For
G.E Transport Systems
AFL Works Order Nō.:
Q112727
AFL product part Nō.’s:
55-154901 (800MHz BS BDA)
80-231302 (800MHz Power Supply)
80-231303 (Alarm System)
Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-1 of 36
Table of Contents
INTRODUCTION ............................................................................................................................................5
Scope................................................................................................................................................................................ 5
Purpose............................................................................................................................................................................ 5
EC DECLARATION OF CONFORMITY.................................................................................................................. 6
Glossary of Terms .......................................................................................................................................................... 7
Key to AFL RF Module Drawing Symbols .................................................................................................................. 8
1.
SAFETY CONSIDERATIONS ............................................................................................................9
1.1
1.2
1.3
1.4
1.5
2.
Earthing of Equipment ..................................................................................................................................... 9
Electric Shock Hazard ...................................................................................................................................... 9
RF Radiation Hazard...................................................................................................................................... 10
Chemical Hazard............................................................................................................................................. 11
Emergency Contact Numbers ........................................................................................................................ 11
OVERVIEW/ SYSTEM DESCRIPTION..........................................................................................12
2.1
3.
General System Description ........................................................................................................................... 12
MULTI-BAND SELECTIVE CELL ENHANCER (RIVER PORTAL).........................................13
3.3
Band Selective BDA (55-154901) ................................................................................................................... 13
3.3.1
Band Selective BDA Description................................................................................................................... 13
3.3.2
Band Selective BDA Electrical Specification ................................................................................................ 13
3.3.3
Band Selective BDA Mechanical Specification............................................................................................. 14
3.3.4
Band Selective BDA System Diagram 55-154981......................................................................................... 15
3.3.5
Band Selective BDA Outline Drawing, Drg. Nō. 50-118181........................................................................ 16
3.3.6
Weehawken System Frequencies Look-up Table........................................................................................... 17
3.3.7
Band Selective BDA (55-154901) Parts List................................................................................................. 18
4.
ALARMS..............................................................................................................................................19
4.1
Alarm/Monitor System ................................................................................................................................... 19
4.1.1
Alarm/Monitor Description........................................................................................................................... 19
4.1.2
Alarm/Monitor Technical Specification ........................................................................................................ 19
5.
SUB-UNIT MODULES .......................................................................................................................20
5.1
5.1.1
5.1.2
5.2
5.2.1
5.2.2
5.3
5.3.1
5.3.2
5.4
5.4.1
5.4.2
5.5
5.5.1
5.5.2
5.6
5.6.1
5.6.2
5.6.3
5.7
5.7.1
5.7.2
5.7.3
Bandpass Filter (02-004502)........................................................................................................................... 20
Description.................................................................................................................................................... 20
Technical Specification ................................................................................................................................. 20
Bandpass Filter (02-007206)........................................................................................................................... 21
Description.................................................................................................................................................... 21
Technical Specification ................................................................................................................................. 21
Crossband Coupler (07-005705) .................................................................................................................... 22
Description.................................................................................................................................................... 22
Technical Specification ................................................................................................................................. 22
¼Watt 0- -30 & 0-15dB Switched Attenuator (10-000701 & 10-000901)................................................... 22
General Application ...................................................................................................................................... 22
Switched Attenuators..................................................................................................................................... 22
Low Noise Amplifier (11-005902) .................................................................................................................. 23
Description.................................................................................................................................................... 23
Technical Specification ................................................................................................................................. 23
Low Noise Amplifier (11-006702) .................................................................................................................. 24
Description.................................................................................................................................................... 24
Technical Specification ................................................................................................................................. 24
LNA ‘D’ Connector Pin-out details .............................................................................................................. 24
20W Power Amplifier (12-018002) ................................................................................................................ 25
Description.................................................................................................................................................... 25
Technical Specification ................................................................................................................................. 25
PA 7-Way Connector Pin-outs ...................................................................................................................... 25
Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-2 of 36
5.8
800MHz 1Watt Low Power Amplifier (12-021901)...................................................................................... 26
5.8.1
Description.................................................................................................................................................... 26
5.8.2
Technical Specification ................................................................................................................................. 26
5.8.3
LPA 7-Way Connector Pin-outs.................................................................................................................... 26
5.9
Wide Dynamic Range AGC (17-001109, det. & 17-001201, atten.) ............................................................ 27
5.9.1
Description.................................................................................................................................................... 27
5.9.2
Technical Specification ................................................................................................................................. 28
5.10
12V Single Relay Board (80-008901) ............................................................................................................. 29
5.10.1
Description................................................................................................................................................ 29
5.10.2
Technical Specification ............................................................................................................................. 29
6.
6.1
7.
INSTALLATION.................................................................................................................................30
Wall Mounted Equipment .............................................................................................................................. 30
MAINTENANCE.................................................................................................................................31
7.1
Fault Finding ................................................................................................................................................... 31
7.1.1
Quick Fault Checklist.................................................................................................................................... 31
7.1.2
Fault Isolation............................................................................................................................................... 31
7.1.3
Downlink ....................................................................................................................................................... 32
7.1.4
Uplink............................................................................................................................................................ 32
7.1.5
Checking service ........................................................................................................................................... 32
7.1.6
Fault repair ................................................................................................................................................... 33
7.1.7
Service Support ............................................................................................................................................. 33
7.2
Tools & Test Equipment................................................................................................................................. 33
7.3
Care of Modules .............................................................................................................................................. 34
7.3.1
General Comments........................................................................................................................................ 34
7.3.2
Module Removal (LNA’s, general procedure): ............................................................................................. 34
7.3.3
Module Replacement (general):.................................................................................................................... 34
7.3.4
Power Amplifiers........................................................................................................................................... 34
7.3.5
Low Power Amplifier Replacement............................................................................................................... 35
7.3.6
Module Transportation: ................................................................................................................................ 35
APPENDIX A
INITIAL EQUIPMENT SET-UP CALCULATIONS ....................................................36
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User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-3 of 36
AMENDMENT LIST RECORD SHEET
Issue
Nō.
Date
05/09/2005
Incorporated
by
CMH
Page No.’s
Amended
Reason for new issue
1st Draft
Document Ref:-Weehawken_River_Portal
Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-4 of 36
INTRODUCTION
Scope
This handbook is for use solely with the equipment identified by the AFL Part Number shown
on the front cover. It is not to be used with any other equipment unless specifically authorised
by Aerial Facilities Limited.
Purpose
The purpose of this handbook is to provide the user/maintainer with sufficient information to
service and repair the equipment to the level agreed. Maintenance and adjustments to any
deeper level must be performed by AFL, normally at the company’s repair facility in Chesham,
England.
This handbook has been prepared in accordance with BS 4884, and AFL’s Quality procedures,
which maintain the company’s registration to BS EN ISO 9001:2000 and to the R&TTE
Directive of the European Parliament. Copies of the relevant certificates and the company
Quality Manual can be supplied on application to the Quality Manager.
This document fulfils the relevant requirements of Article 6 of the R&TTE Directive.
Limitation of Information Notice
This manual is written for the use of technically competent operators/service persons. No
liability is accepted by AFL for use or misuse of this manual, the information contained
therein, or the consequences of any actions resulting from the use of the said information,
including, but not limited to, descriptive, procedural, typographical, arithmetical, or listing
errors.
Furthermore, AFL does not warrant the absolute accuracy of the information contained within
this manual, or it’s completeness, fitness for purpose, or scope.
AFL has a policy of continuous product development and enhancement, and as such, reserves
the right to amend, alter, update and generally change the contents, appearance and pertinence
of this document without notice.
All AFL products carry a twelve month warranty from date of shipment. The warranty is
expressly on a return to base repair or exchange basis and the warranty cover does not extend
to on-site repair or complete unit exchange.
Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-5 of 36
EC DECLARATION OF CONFORMITY
In accordance with BS EN ISO/IEC 17050-1&-2:2004
0086
AERIAL FACILITIES LTD
Aerial House
Asheridge Road
Chesham
Bucks HP5 2QD
United Kingdom
DECLARES, UNDER OUR SOLE RESPONSIBILITY THAT THE FOLLOWING PRODUCT
PRODUCT PART NO[S]
55-154901
PRODUCT DESCRIPTION
Weehawken tunnel remote amplifier
IN ACCORDANCE WITH THE FOLLOWING DIRECTIVES:
1999/5/EC
directives
The Radio & Telecommunications Terminal Equipment Directive Annex V and its amending
HAS BEEN DESIGNED AND MANUFACTURED TO THE FOLLOWING STANDARD[S] OR OTHER
NORMATIVE DOCUMENT[S]:
BS EN 60950
Information technology equipment. Safety. General requirements
ETS EN 301 489-1
EMC standard for radio equipment and services. Part 1. Common technical
requirements
I hereby declare that the equipment named above has been designed to comply with the relevant sections of the
above referenced specifications. The unit complies with all essential requirements of the Directives.
SIGNED
B S BARTON
TECHNICAL DIRECTOR
DATE: 08/11/2005
Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-6 of 36
Glossary of Terms
Repeater or
Cell Enhancer
Band Selective Repeater
Channel Selective
Repeater
AC
AGC
BBU
BTS
CEMS
C/NR
DC
Downlink (D/L)
FO
GND
ID
LED
LNA
LPA
MOU
M.S.
MTBF
N/A
N/C
OFR
OIP3
PA
RF
RSA
Rx
S/N
Tx
Uplink (U/L)
VSWR
WDM
A Radio Frequency (RF) amplifier which can simultaneously
amplify and re-broadcast Mobile Station (MS) and Base
Transceiver Station (BTS) signals.
A Cell Enhancer designed for operation on a range of channels
within a specified frequency band.
A Cell Enhancer, designed for operation on specified
channel(s) within a specified frequency band. Channel
frequencies may be factory set or on-site programmable.
Alternating Current
Automatic Gain Control
Battery Backup Unit
Base Transceiver Station
Coverage Enhanced Management System
Carrier-to-Noise Ratio
Direct Current
RF signals Tx from the BTS to the Master Site
Fibre Optic
Ground
Identification Number
Light Emitting Diode
Low Noise Amplifier
Low Power Amplifier
Master Optical Unit
Mobile Station
Mean Time Between Failures
Not Applicable
No Connection
On Frequency Repeater
Output Third Order Intercept Point = RFout +(C/I)/2
Power Amplifier
Radio Frequency
Receiver/Splitter Amplifier
Receiver
Serial Number
Transmitter
RF signals transmitted from the MS to the BTS
Voltage Standing Wave Ratio
Wave division multiplex
Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-7 of 36
Key to AFL RF Module Drawing Symbols
Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-8 of 36
1.
SAFETY CONSIDERATIONS
1.1
Earthing of Equipment
Cell Enhancers supplied from the mains must be connected to grounded outlets and earthed in
conformity with appropriate local, national and international electricity supply and safety
regulations.
1.2
Electric Shock Hazard
Electrical shocks due to faulty mains driven power supplies.
Whilst ever potentially present in any electrical equipment, such a condition would be
minimised by quality installation practice and thorough testing at:
a) Original assembly
b) Commissioning
c) Regular intervals, thereafter.
All test equipment to be in good working order prior to its use. High current power supplies can
be dangerous because of the possibility of substantial arcing. Always switch off during
disconnection and reconnection.
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User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-9 of 36
1.3
RF Radiation Hazard
RF radiation, (especially at UHF frequencies) arising from transmitter outputs connected to
AFL’s equipment, must be considered a safety hazard.
This condition might only occur in the event of cable disconnection, or because a ‘spare’ output
has been left unterminated. Either of these conditions would impair the system’s efficiency. No
investigation should be carried out until all RF power sources have been removed. This would
always be a wise precaution, despite the severe mismatch between the impedance of an N type
connector at 50Ω, and that of free space at 377Ω, which would severely mitigate against the
efficient radiation of RF power. Radio frequency burns could also be a hazard, if any RF power
carrying components were to be carelessly touched!
Antenna positions should be chosen to comply with requirements (both local & statutory)
regarding exposure of personnel to RF radiation. When connected to an antenna, the unit is
capable of producing RF field strengths, which may exceed guideline safe values especially if
used with antennas having appreciable gain. In this regard the use of directional antennas with
backscreens and a strict site rule that personnel must remain behind the screen while the RF
power is on, is strongly recommended.
Where the equipment is used near power lines, or in association with temporary masts not
having lightning protection, the use of a safety earth connected to the case-earthing bolt is
strongly advised.
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User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-10 of 36
1.4
Chemical Hazard
Beryllium Oxide, also known as Beryllium Monoxide, or Thermalox™, is sometimes used in
devices within equipment produced by Aerial Facilities Ltd. Beryllium oxide dust can be toxic if
inhaled, leading to chronic respiratory problems. It is harmless if ingested or by contact.
Products that contain beryllium are load terminations (dummy loads) and some power
amplifiers. These products can be identified by a yellow and black “skull and crossbones”
danger symbol (shown above). They are marked as hazardous in line with international
regulations, but pose no threat under normal circumstances. Only if a component containing
beryllium oxide has suffered catastrophic failure, or exploded, will there be any danger of the
formation of dust. Any dust that has been created will be contained within the equipment
module as long as the module remains sealed. For this reason, any module carrying the yellow
and black danger sign should not be opened. If the equipment is suspected of failure, or is at the
end of its life-cycle, it must be returned to Aerial Facilities Ltd for disposal.
To return such equipment, please contact the Quality Department, who will give you a Returned
Materials Authorisation (RMA) number. Please quote this number on the packing documents,
and on all correspondence relating to the shipment.
PolyTetraFluoroEthylene, (P.T.F.E.) and P.T.F.E. Composite Materials
Many modules/components in AFL equipment contain P.T.F.E. as part of the RF insulation
barrier.
This material should never be heated to the point where smoke or fumes are evolved. Any
person feeling drowsy after coming into contact with P.T.F.E. especially dust or fumes should
seek medical attention.
1.5
Emergency Contact Numbers
The AFL Quality Department can be contacted on:
Telephone
Fax
e-mail
+44 (0)1494 777000
+44 (0)1494 777002
qa@aerial.co.uk
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Date:-05/08/05
Page:-11 of 36
2.
OVERVIEW/ SYSTEM DESCRIPTION
2.1
General System Description
The Weehawken tunnel radio system is designed to amplify various bands of radio frequencies,
in either channelised or band selective modes. This unit amplifies all the RF bands to the ‘River
Portal’ area in a band-selective mode with AGC in the uplink direction. All the hardware is
built into a standard environmentally protected cabinet which has an IP rating of 65.
The system described in this document is ‘stand-alone’ and needs no other equipment apart
from a +12V DC power supply. Every active module in the entire system has a dedicated alarm
and these are series wired within the unit to a relay which gives a volt-free output pair which is
wired to a ‘krone-block’ termination and ultimately to a pair of wires in an external port
connector (alarm connector, pins 1 & 2).
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3.
MULTI-BAND SELECTIVE CELL ENHANCER (RIVER PORTAL)
3.3
Band Selective BDA (55-154901)
3.3.1
Band Selective BDA Description
The band selective BDA which covers the ‘River Portal’ site carries two downlink paths and
one uplink path, all with automatic gain control on the last amplification stage in each path.
Cross band couplers are fitted to the input and output to facilitate a low frequency bypass of
the 800MHz BDA allowing the lower frequency signals to pass unhindered.
All amplifiers have built-in alarms which are configured as a summary, volt-free relay
contact pair terminating at pins 1 & 2 on the ‘D’ type alarm connector.
3.3.2
Band Selective BDA Electrical Specification
PARAMETER
Frequency ranges:
Gain:
Gain Adjustment:
Uplink power:
Downlink power:
Downlink power:
Uplink
IP3:
Downlink
Noise Figure:
AGC:
DC Power supply:
VSWR:
RF Connectors:
operational:
Temperature range:
storage:
Alarms Fitted:
(volt-free contacts/TTL)
SPECIFICATION
929-930MHz (Downlink)
854-869MHz (Downlink)
806-824MHz (Uplink)
>35dB
0 - 30dB (in 2dB steps)
>1.0Watts (806-824MHz path)
>1.0Watts (929-930MHz path)
>20.0Watts (854-869MHz path)
+43dBm (806-824 & 929-930MHz paths)
+56dBm (854-869MHz path)
<6dB (at maximum gain)
Fitted to all paths
12V DC (externally supplied)
better than 1.5:1
N type, female
-10°C to +55°C
-40°C to +70°C
Downlink amplifiers
Uplink amplifiers
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3.3.3
Band Selective BDA Mechanical Specification
PARAMETER
SPECIFICATION
Height: 620mm
Width: 620mm
Depth: 250mm
(excluding heatsinks, connectors, handles and feet)
Fixings: 4 holes on 670(w) x 558(h)mm
Operational: -10°C to +55°C
Temperature range:
Storage:
-40°C to +70°C
Weight: >30kg
RF Connectors: N type female
Environmental Protection: IP65 (with door closed and all ports terminated)
Case: To RAL 7035
Finish:
Heatsinks: Matt black (where fitted)
Handles: Black technopolymer
Unit supplied with suitable supply input leads with
Supply Cable:
connector and appropriate length of cable
Case size
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3.3.4
Band Selective BDA System Diagram 55-154981
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3.3.5
Band Selective BDA Outline Drawing, Drg. Nō. 50-118181
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Page:-16 of 36
3.3.6
Weehawken System Frequencies Look-up Table
Agency
Jersey City Medical Center - EMS
North Hudson Regional Fire and Rescue
NJ Statewide Police (SPEN)
Jersey City Medical Center - EMS
Jersey City Medical Center - EMS
North Hudson Regional Fire and Rescue
Weehawken Township
Weehawken Township
New Jersey Transit Police Dept.
Jersey City Police Department
Jersey City Fire Department
Jersey City Fire Department
Hoboken Fire Dept
West New York Police Department
New Jersey Transit Bus Data System
New Jersey Transit Bus Data System
Township of North Bergen Police
City of Union City
New Jersey Transit Trunked Radio System
New Jersey Transit Trunked Radio System
New Jersey Transit Trunked Radio System
New Jersey Transit Trunked Radio System
City of Union City
New Jersey Transit Trunked Radio System
New Jersey Transit Trunked Radio System
New Jersey Transit Trunked Radio System
New Jersey Transit Trunked Radio System
City of Union City
City of Union City
New Jersey Transit Trunked Radio System
New Jersey Transit Trunked Radio System
New Jersey Transit Paging
New Jersey Transit Paging
Channel
Number
VHF CHN 1
VHF CHN 2
VHF CHN 3
VHF CHN 4
VHF CHN 5
VHF CHN 6
VHF CHN 7
VHF CHN 8
VHF CHN 9
UHF CHN 1
UHF CHN 2
UHF CHN 3
UHF CHN 4
UHF CHN 5
800 CHN 1
800 CHN 2
800 CHN 3
800 CHN 4
800 CHN 5
800 CHN 6
800 CHN 7
800 CHN 8
800 CHN 9
800 CHN 10
800 CHN 11
800 CHN 12
800 CHN 13
800 CHN 14
800 CHN 15
800 CHN 16
800 CHN 17
900 CHN 1
900 CHN 2
Uplink Tx
Downlink Rx
153.7850
154.3250
154.6800
155.2350
155.2800
158.8650
159.0900
159.2100
161.5200
465.3750
465.5500
465.6000
471.5500
473.3125
809.2875
809.4875
810.7375
821.3500
821.4625
821.4875
821.9625
821.9875
822.1625
822.4625
822.4875
822.9625
822.9875
823.1875
823.2125
823.4625
823.4875
153.7850
154.3250
154.6800
155.2350
155.2800
154.1450
159.0900
159.2100
160.8300
460.3750
460.5500
460.6000
471.5500
470.3125
854.2875
854.4875
855.7375
866.3500
866.4625
866.4875
866.9625
866.9875
867.1625
867.4625
867.4875
867.9625
867.9875
868.1875
868.2125
868.4625
868.4875
929.5875
929.6125
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Date:-05/08/05
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3.3.7
Band Selective BDA (55-154901) Parts List
AFL Part Nō.
02-004502
02-007206
07-005705
10-000701
11-005902
12-018002
12-021901
17-000126
17-000526
17-001109
17-001201
17-001527
17-001528
17-009020
80-008901
80-031820
80-032320
80-122701
91-030002
91-130001
91-500013
91-500015
91-500016
91-510032
91-600007
91-600014
91-660001
91-700017
96-700034
96-700035
97-400010
97-900003
Part Description
4P C/L SD FILTER 920MHz (3MHz B/W) SMA
900MHz 8POLE 15-25MHz B/W "SMA"
CROSSBAND CPLR XC 250/380 SMA
1/4W0-30dB SWITCHED ATTENUATOR
900MHz LOW NOISE AMP WITH RELAY ASS
PA 800-960MHz 20W CLASS A
POWER AMPLIFIER 900MHz 1W +12V
CELL ENHANCER LABEL 6 DIGIT
CE 10W HEATSINK THERMAL GASKET
CE AGC UNIT LOG DET/AMP ASSY (12V)
C/E AGC UNIT ATTENUATOR ASSY
C/E HS 2.00mm ALUM BLANKING PLATE
GASKET 20W HEATSINK/BLANKING PLATE
ENCLOSURE 620 x 420 x 250 (3 H/S) ALU
12V RELAY PCB ASSEMBLY
20W PA HEATSINK
10W PA HEATSINK
BBU to CE DC CABLE, 2pole IP68 BULGIN
N ADAPTOR PANEL FEMALE:FEMALE
SMA ADAPT 'T' ALL FEMALE 3 GHz
PWR 2POLE PNL PLUG SEALED IP68
PWR CON CAP SEALED with INT. THREAD
PWR 6POLE PNL PLUG SEALED IP68
20A SOCKET CONTACT PIN
'D' 9 WAY BLACK SHELL
'D' 9 WAY SOCKET S/B (NON FILTERED)
2W5 MIXED D TYPE SOCKET (7 WAY)
ICD 15 WAY 0.1' CONNECTOR
LED RED 5mm IP67
LED GREEN 5mm IP67
BLACK PLASTIC HANDLE 50mm HIGH
RUBBER FOOT 1 1:2' DIA.
Qty.
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4.
ALARMS
4.1
4.1.1
Alarm/Monitor System
Alarm/Monitor Description
The alarm system acts as an alarm concentrator for all the alarms in the unit. Firstly, within
each active component, the individually alarmed modules are ‘summed together’ and
presented to the outside world as a volt-free, relay contact pair (pins 1 & 2 in the IP65 alarm
connector.
As all the alarms in the system are ‘held closed loops’, should the power supply fail, the
main system alarm will be triggered.
4.1.2
Alarm/Monitor Technical Specification
PARAMETER
SPECIFICATION
Operating voltage: 12V (floating earth)
Alarm output relay contacts:
Max. switch current: 1.0Amp
Max. switch volts: 120Vdc/60VA
Max. switch power: 24W/60VA
Min. switch load: 10.0µA/10.0mV
Relay isolation: 1.5kV
Mechanical life: >2x107 operations
Relay approval: BT type 56
Connector details: 25 Way ‘D’ Connector
operational: :-10°C to +55°C
Temperature range
storage: :-40°C to +70°C
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5.
SUB-UNIT MODULES
5.1
5.1.1
Bandpass Filter (02-004502)
Description
The bandpass filters are multi-section designs with a bandwidth dependent upon the passband
frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev
with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design,
and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and
intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce
surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output
ports.
Being passive devices, the bandpass filters should have an extremely long operational life and
require no maintenance. Should a filter be suspect, it is usually most time efficient to replace
the module rather than attempt repair or re-tuning.
No adjustments should be attempted without full network sweep analysis facilities to monitor
both insertion loss and VSWR simultaneously.
5.1.2
Technical Specification
PARAMETER
Response Type
Frequency Range:
Bandwidth:
Number of Sections:
Insertion Loss:
VSWR:
Connectors:
Power Handling:
Temperature
operation:
range:
storage:
Weight:
SPECIFICATION
Chebyshev
751-862MHz (tuned to spec.)
12MHz (tuned to spec.)
1.2 dB
better than 1.2:1
SMA female
100W max
-10°C to +60°C
-20°C to +70°C
3 kg (typical)
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5.2
5.2.1
Bandpass Filter (02-007206)
Description
The bandpass filters are multi-section designs with a bandwidth dependent upon the passband
frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev
with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design,
and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and
intermodulation characteristics of the unit. The tuned elements are silver-plated to reduce
surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output
ports.
Being passive devices, the bandpass filters should have an extremely long operational life and
require no maintenance. Should a filter be suspect, it is usually most time efficient to replace
the module rather than attempt repair or re-tuning.
No adjustments should be attempted without full network sweep analysis facilities to monitor
both insertion loss and VSWR simultaneously.
5.2.2
Technical Specification
PARAMETER
Response Type
Frequency range:
Bandwidth:
Number of sections:
Insertion Loss:
VSWR:
Connectors:
Power Handling:
Temperature
operation:
range:
storage:
Weight:
SPECIFICATION
Chebyshev
800 - 950MHz (tuned to spec.)
25MHz (tuned to spec.)
1.2 dB
better than 1.2:1
SMA female
100W max
-10°C to +60°C
-20°C to +70°C
3 kg (typical)
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5.3
5.3.1
Crossband Coupler (07-005705)
Description
The purpose of a crossband coupler is to either combine/split transmission signals from
different parts of the frequency spectrum.
It basically comprises of a 3 port device, two filters, one a low pass, the other a high pass
feeding a common output. In this case, a VHF spectrum signal source is to be combined with a
band 2 FM source, (many other combinations are also possible). The couplers are built into a
machined aluminium casing having a centre screening wall between the filter sections and lid
secured by screws at frequent intervals over its perimeter to obtain a tight seal and to ensure
linearity and stability of response.
5.3.2
Technical Specification
SPECIFICATION
70-250MHz
380-960 MHz
50 Watts (CW)
0.5 dB
> 50 dB
70-250MHz
Isolation: > 50 dB
380-960MHz
(15 dB typical Return loss 500-960)
Impedance: 50 ohm
Connectors: SMA- female
PARAMETER
250 MHz:
Passband
380 MHz:
Power Rating:
Number of Input ports:
Number of Output ports:
Insertion loss:
5.4
5.4.1
¼Watt 0- -30 & 0-15dB Switched Attenuator (10-000701 & 10-000901)
General Application
In many practical applications for Cell Enhancers etc., the gain in each path is found to be
excessive. Therefore, provision is made within the unit for the setting of attenuation in each
path, to reduce the gain.
5.4.2
Switched Attenuators
The AFL switched attenuators are available in two different types; 0 – 30dB in 2 dB steps, or 0
– 15dB in 1 dB steps. The attenuation is simply set using the four miniature toggle switches on
the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total
attenuation in line is the sum of the values switched in. They are designed to maintain an
accurate 50Ω impedance over their operating frequency at both input and output.
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5.5
Low Noise Amplifier (11-005902)
5.5.1
Description
The Gallium-Arsenide low noise amplifier used in the unit is a double stage, solid-state low
noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity and
extremely low noise over a very wide dynamic range. The active devices are very moderately
rated to provide a long trouble-free working life. There are no adjustments on these amplifiers,
and in the unlikely event of a failure, then the complete amplifier should be replaced. This
amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm
that is easily integrated into the main alarm system.
5.5.2
Technical Specification
PARAMETER
Frequency range:
Bandwidth:
Gain:
1dB Compression point:
OIP3:
Input/Output Return Loss:
Noise Figure:
Power consumption:
Supply voltage:
Connectors:
operational:
Temperature range:
storage:
Size:
Weight:
SPECIFICATION
800 – 960MHz
<170MHz
19.5dB (typical)
21dBm
33dBm
>20dB
1dB (typical)
190mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
0.28kg
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5.6
5.6.1
Low Noise Amplifier (11-006702)
Description
The Gallium-Arsenide low noise amplifiers used in the system are double stage, solid-state
low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent
linearity and extremely low noise over a very wide dynamic range. The active devices are
very moderately rated to provide a long trouble-free working life. There are no adjustments
on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should
be replaced. This amplifier features its own in-built alarm system which gives a volt-free
relay contact type alarm that is easily integrated into the main alarm system.
5.6.2
Technical Specification
PARAMETER
Frequency Range:
Bandwidth:
Gain:
1dB Compression Point:
OIP3:
Input/Output Return Loss:
Noise Figure:
Power Consumption:
Supply Voltage:
Connectors:
operational:
Temperature Range:
storage:
Size:
Weight:
5.6.3
SPECIFICATION
800 – 1000MHz
<200MHz
29dB (typical)
20dBm
33dBm
>18dB
1.3dB (typical)
180mA @ 24V DC
10-24V DC
SMA female
-10°C to +60°C
-20°C to +70°C
90 x 55 x 30.2mm
290gms (approximately)
LNA ‘D’ Connector Pin-out details
Connector pin
Signal
+Ve input (10-24V)
GND
Alarm Relay O/P bad
Alarm Relay common
Alarm Relay good
No connection
TTL voltage set
TTL alarm/0V (good)
O/C good/0V bad
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5.7
5.7.1
20W Power Amplifier (12-018002)
Description
This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced
configuration. It demonstrates a very high linearity and a very good input/output return loss
(RL). It has built in a Current Fault Alarm Function.
Its housing is an aluminium case (Alocrom 1200 finish) with SMA connectors for the RF
input/output and a D-Type connector for the power supply and the Current Fault Alarm
Function.
5.7.2
Technical Specification
PARAMETER
Frequency range:
Small signal gain:
Gain flatness:
I/O Return loss:
1dB compression point:
OIP3:
Supply voltage:
Supply current:
Temperature
operational:
range
storage:
Weight:
5.7.3
SPECIFICATION
800-960MHz
30dB
±1.2dB
>18dB
42.8dBm
56dBm
24V DC
5.0Amps (Typical)
-10°C to +60°C
-20°C to +70°C
<2kg (no heatsink)
PA 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
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5.8
5.8.1
800MHz 1Watt Low Power Amplifier (12-021901)
Description
The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry
is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active
devices are very moderately rated to provide a long trouble-free working life. There are no
adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier
should be replaced.
5.8.2
Technical Specification
PARAMETER
Frequency range:
Bandwidth:
Maximum RF output:
Gain:
1dB compression point:
3rd order intercept point:
Noise Figure:
VSWR:
Connectors:
Supply:
Temperature operational:
range:
storage:
Weight:
Size:
5.8.3
SPECIFICATION
800-960MHz
20MHz (tuned to specificatio
>1.0 Watt
15dB
+30.5dBm
+43dBm
<6dB
better than 1.5:1
SMA female
500mA @ 10-15V DC
-10°C to +60°C
-20°C to +70°C
0.5 kg
167x52x25mm
LPA 7-Way Connector Pin-outs
Connector Pin
A1 (large pin)
A2 (large pin)
Signal
+24V DC
GND
Alarm relay common
TTL alarm/0V good
Alarm relay contact (bad)
Alarm relay contact (good)
O/C good/0V bad (TTL)
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5.9
5.9.1
Wide Dynamic Range AGC (17-001109, det. & 17-001201, atten.)
Description
The equipment is fitted with a wide dynamic range Automatic Gain Control (AGC) system.
This is generally fitted in the Uplink path (not usually needed in the downlink path, as the
signal here is at an almost constant level), to avoid overloading the amplifiers (with the
associated performance degradation) should a mobile be operated very close to the unit.
The AFL wide dynamic range Automatic Gain Control system consists of two units, a
detector/amplifier and an attenuator. The logarithmic detector/amplifier unit is inserted in the
RF path on the output of the power amplifier, and the attenuator is situated in the RF path
between the 1st and 2nd stages of amplification.
Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF
level being delivered by the power amplifier, and when a certain threshold is reached it begins
to increase the value of the attenuator to limit the RF output to the (factory set) threshold.
Therefore overloading of the power amplifier is avoided.
The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment
of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not
recommended under any circumstances to adjust the AGC threshold to a level greater than the
1dB compression point as system degradation will occur.
The detector comprises of a 50Ω transmission line with a resistive tap which samples a small
portion of the mainline power. The sampled signal is amplified and fed to a conventional half
wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal.
This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the
output, which drives the attenuation control line of the corresponding AGC attenuator. This
unit is fitted at some earlier point in the RF circuit.
The unit contains a 12V DC regulator in the detector module, which supplies stabilised voltage
to the DC amplifier and via an external cableform to the AGC attenuator.
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For small signals, below AGC onset, the output control line will be close to 12V and the AGC
attenuator will have minimum attenuation. As the signal level increases the control line voltage
will fall, increasing the attenuator value and keeping the system output level at a constant
value.
The AGC onset level is adjusted by the choice of sampler resistor R1 and by the setting of
potentiometer VR1, (factory set @ time of system test) do not adjust unless able to monitor
subsequent RF levels.
The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to
30dB. The attenuation is controlled by a DC voltage which is derived from the associated AGC
detector unit.
5.9.2
Technical Specification
PARAMETER
Frequency range:
Attenuation range:
Attenuation steps:
VSWR:
RF Connectors:
attenuator:
Power handling:
detector/amp:
operation:
Temperature range:
storage:
attenuator pcb
Size:
detector/amp pcb
attenuator:
Weight:
detector/amp:
SPECIFICATION
up to 1000MHz
3 to 30dB
continuously variable
better than 1.2:1
SMA female
1W
>30W (or as required)
-10°C to +60°C
-20°C to +70°C
50 x 42 x 21mm
54 x 42 x 21mm
90gm
100gm
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5.10
12V Single Relay Board (80-008901)
5.10.1 Description
The General Purpose Relay Board allows the inversion of signals and the isolation of
circuits. It is equipped with a single dual pole change-over relay RL1, with completely
isolated wiring, accessed via a 15 way in-line connector.
The relay is provided with polarity protection diodes and diodes for suppressing the
transients caused by "flywheel effect" which can destroy switching transistors or induce
spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into
one, volts-free relay contact pair for the main alarm system.
Note that the board is available for different voltages (12 or 24V) depending on the type of
relay fitted at RL1.
5.10.2 Technical Specification
PARAMETER
SPECIFICATION
Operating voltage: 8 to 30V (floating earth)
Alarm Threshold: Vcc - 1.20 volt +15%
Alarm output relay contacts:
Max. switch current: 1.0Amp
Max. switch volts: 120Vdc/60VA
Max. switch power: 24W/60VA
Min. switch load: 10.0µA/10.0mV
Relay isolation: 1.5kV
Mechanical life: >2x107 operations
Relay approval: BT type 56
Connector details: Screw terminals
operational: :-10°C to +55°C
Temperature range
storage: :-40°C to +70°C
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6.
INSTALLATION
6.1
Wall Mounted Equipment
The procedure for installing and commissioning a wall-mounted Bi-Directional Amplifier unit
is generally as follows:
1 Fix the unit in the chosen position. Ensure the mounting site is a straight, smooth,
perpendicular surface (brick or concrete recommended).
Fix the two antennas and connect them to the BDA.
Connect a suitable mains and/or battery power supply to the unit.
Calculate the attenuation settings required for the uplink and the downlink paths, and set the
attenuators as described elsewhere in this document.
Switch the BDA mains on with the small switch located inside the unit on the lower right
hand side of the case.
Make test calls via the equipment to ensure correct operation, if possible monitoring the
signal levels during these calls to ensure that the uplink and downlink RF levels are as
anticipated.
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7.
MAINTENANCE
7.1
7.1.1
Fault Finding
Quick Fault Checklist
All AFL equipment is individually tested to specification prior to despatch. Failure of this type
of equipment is not common. Experience has shown that a large number of fault conditions
relating to tunnel installations result from simple causes often occurring as result of
transportation, unpacking and installation. Below are listed some common problems which have
resulted in poor performance or an indicated non-functioning of the equipment.
•
•
•
•
•
•
•
•
•
•
Mains power not connected or not switched on.
External connectors not fitted or incorrectly fitted.
Internal connectors becoming loose due to transport vibration.
Wiring becoming detached as a result of heavy handling.
Input signals not present due to faults in the aerial and feeder system.
Base transmissions not present due to fault at the base station.
Modems fitted with incorrect software configuration.
Changes to channel frequencies and inhibiting channels.
Hand held radio equipment not set to repeater channels.
Hand held radio equipment not set to correct base station.
7.1.2
Fault Isolation
In the event that the performance of the system is suspect, a methodical and logical approach to
the problem will reveal the cause of the difficulty. The System consists of modules fitted in a
wall-mounted, environmentally protected enclosure.
Transmissions from the main base stations are passed though the system to the mobile radio
equipment; this could be a handheld radio or a transceiver in a vehicle. This path is referred to
as the downlink. The return signal path from the mobile radio equipment to the base station is
referred to as the uplink.
The first operation is to check the alarms of each of the active units and determine that the
power supplies to the equipment are connected and active.
This can be achieved remotely (via CEMS, the RS232 Coverage Enhancement Management
System, if fitted), or locally with the front panel LED’s. The green LED on the front panel
should be illuminated, while the red alarm indicator should be off. If an Alarm is on, then that
individual module must be isolated and individually tested against the original test
specification.
The individual amplifier units within the shelf have a green LED showing through a hole in
their piggy-back alarm board, which is illuminated if the unit is working correctly. If an
amplifier is suspect, check the DC power supply to the unit. If no other fault is apparent use a
spectrum analyser to measure the incoming signal level at the input and then after reconnecting
the amplifier input, measure the output level. Consult with the system diagram to determine the
expected gain and compare result.
In the event that there are no alarms on and all units appear to be functioning it will be
necessary to test the system in a systematic manner to confirm correct operation.
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7.1.3
Downlink
Confirm that there is a signal at the expected frequency and strength from the base station. If
this is not present then the fault may lay outside the system. To confirm this, inject a downlink
frequency signal from a known source at the master site BTS input and check for output at the
remote site feeder output.
If a signal is not received at the output it will be necessary to follow the downlink path through
the system to find a point at which the signal is lost. The expected downlink output for the
given input can be found in the end-to-end test specification.
7.1.4
Uplink
Testing the uplink involves a similar procedure to the downlink except that the frequencies
used are those transmitted by the mobile equipment.
7.1.5
Checking service
Following the repair of any part of the system it is recommended that a full end-to-end test is
carried out in accordance with the test specification and that the coverage is checked by survey.
It is important to bear in mind that the system includes a radiating cable network and base
stations that may be faulty or may have been damaged.
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7.1.6
Fault repair
Once a faulty component has been identified, a decision must be made on the appropriate
course to carry out a repair. A competent engineer can quickly remedy typical faults such as
faulty connections or cables. The exceptions to this are cable assemblies connecting bandpass
filter assemblies that are manufactured to critical lengths to maintain a 50-ohm system. Care
should be taken when replacing cables or connectors to ensure that items are of the correct
specification. The repair of component modules such as amplifiers and bandpass filters will not
usually be possible in the field, as they frequently require specialist knowledge and test
equipment to ensure correct operation. It is recommended that items of this type are replaced
with a spare unit and the faulty unit returned to AFL for repair.
7.1.7
Service Support
Advice and assistance with maintaining and servicing this system are available by contacting
Aerial Facilities Ltd.
NOTE
Individual modules are not intended to be repaired on site and attempts at repair will
invalidate active warranties. Company policy is that individual modules should be
repaired by replacement. Aerial Facilities Ltd maintains a high level of stock of most
modules which can usually be despatched at short notice to support this policy.
7.2
Tools & Test Equipment
The minimum tools and test equipment needed to successfully service this AFL product are as
follows:Spectrum analyser:
Signal Generator:
Attenuator:
Test Antenna:
Digital multi-meter:
Test cable x 2:
Test cable x 2:
Hand tools:
100kHz to 2GHz (Dynamic range = 90dB).
30MHz to 2GHz (-120dBm to 0dBm o/p level).
20dB, 10W, DC-2GHz, (N male – N female).
Yagi or dipole for operating frequency.
Universal Volt-Ohm-Amp meter.
N male – N male, 2M long RG214.
SMA male – N male, 1m long RG223.
Philips #1&2 tip screwdriver.
3mm flat bladed screwdriver.
SMA spanner and torque setter.
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7.3
7.3.1
Care of Modules
General Comments
Many of the active modules contain semiconductor devices utilising MOS technology, which
can be damaged by electrostatic discharge. Correct handling of such modules is mandatory to
ensure their long-term reliability.
To prevent damage to a module, it must be withdrawn/inserted with care. The module may have
connectors on its underside, which might not be visible to the service operative.
7.3.2
Module Removal (LNA’s, general procedure):
The following general instructions should be followed to remove a module:
Remove power to the unit
Remove all visible connectors (RF, DC & alarm)
Release module retaining screws.
Slowly but firmly, pull the module straight out of its position. Take care not to twist/turn the
module during withdrawal. (When the module is loose, care may be needed, as there may be
concealed connections underneath).
7.3.3
Module Replacement (general):
Carefully align the module into its location then slowly push the module directly straight
into its position, taking care not to twist/turn it during insertion.
Reconnect all connectors, RF, alarm, power etc.,(concealed connectors may have to be
connected first).
Replace retaining screws (if any).
Double-check all connections before applying power.
7.3.4
Power Amplifiers
1) Remove power to the unit. (Switch off @ mains/battery, or remove DC in connector)
2) Remove alarm wires from alarm screw terminal block or disconnect multi-way alarm
connector.
3) Carefully disconnect the RF input and output coaxial connectors (usually SMA)
If alarm board removal is not required, go to step 5.
4) There is (usually) a plate attached to the alarm board which fixes it to the amplifier, remove
its retaining screws and the alarm board can be withdrawn from the amplifier in its entirety.
On certain types of amplifier the alarm board is not mounted on a dedicated mounting plate;
in this case it will have to firstly be removed by unscrewing it from the mounting pillars, in
most cases, the pillars will not have not have to be removed before lifting the amplifier.
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5) If the amplifier to be removed has a heatsink attached, there may be several different ways it
can have been assembled. The most commonly used method, is screws through the front of
the heatsink to threaded screw holes (or nuts and bolts), into the amplifier within the main
case. If the heatsink is mounted on the rear of the main case (e.g., against a wall in the case
of wall mounted enclosures), then the fixing method for the heatsink will be from within the
case, (otherwise the enclosure would have to be removed from the wall in order to remove
the heatsink).
When the heatsink has been removed, the amplifier may be unscrewed from the main casing
by its four corner fixings and gently withdrawn.
Fitting a new power amplifier module will be the exact reverse of the above.
Note: Do not forget to apply fresh heatsink compound to the heatsink/main case joint
and also between the amplifier and the main case.
7.3.5
Low Power Amplifier Replacement
Disconnect the mains power supply and disconnect the 24V dc supply connector for the
LPA.
Disconnect the RF input and output cables from the LPA.
Disconnect the alarm connector.
Remove the alarm monitoring wires from (D type connector) pins 9 and 10.
Remove the LPA module by removing the four retaining screws, replace with a new LPA
module and secure it with the screws.
Connect the RF cables to the LPA input and output connectors. Reconnect the wires to the
alarm board connector pins 9 and 10.
Reconnect the DC supply connector and turn the mains switch on.
Note:
Tighten SMA connectors using only a dedicated SMA torque spanner. If SMA
connectors are over-tightened, irreparable damage will occur. . Do not use adjustable pliers
to loosen/tighten SMA connectors.
Also take care not to drop or knock the module as this can damage (or misalign in the case
of tuned passive modules) sensitive internal components. Always store the modules in an
environmentally friendly location
7.3.6
Module Transportation:
To maintain the operation, performance and reliability of any module it must be stored and
transported correctly. Any module not installed in a whole system must be kept in an anti-static
bag or container. These bags or containers are normally identified by being pink or black, and
are often marked with an ESD label. Any module sent back to AFL for investigation/repair must
be so protected. Please contact AFL’s quality department before returning a module.
Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-35 of 36
APPENDIX A
INITIAL EQUIPMENT SET-UP CALCULATIONS
GENERAL INFORMATION
Client Name:
AFL Equip. Model Nō.
Site Name:
Date:
Model
ANTENNA SYSTEMS
Gain
Azimuth
Comments
Type
Loss
Comments
A - Service Antenna
B – Donor Antenna
Length
C – Service Feeder
D – Donor Feeder
INITIAL PARAMETERS
E – CE Output Power
F – Antenna Isolation
G – Input signal level from donor BTS
Operating Voltage
DOWNLINK CALCULATIONS
Parameter
Comments
Input signal level (G)
CE max. o/p power (E)
Gain setting
E-G
Isolation required
(Gain + 10dB)
Service antenna gain (A)
Service antenna feeder loss (C)
Effective radiated power (ERP)
E+A-C
Attenuator setting
CE gain-gain setting
dBm
dB
dBm
Value
dBm
dBm
dB
dB
dB
dB
dBm
dB
If the input signal level in the uplink path is known and steady, use the following calculation
table to determine the gain setting. If the CE features Automatic Gain Control the attenuator
should be set to zero and if not, then the attenuation setting for both uplink and downlink
should be similar.
UPLINK CALCULATIONS
Parameter
Comments
Input signal level
CE max. o/p power (E)
Gain setting
Required isolation
Donor antenna gain (B)
Donor antenna feeder loss (D)
Effective radiated power (ERP)
E+B-D
Attenuator setting
(CE gain-gain setting)
Value
dBm
dBm
dB
dB
dB
dB
dBm
dB
Weehawken Tunnel Remote Repeater
User/Maintenance Handbook
Handbook Nō.-Weehawken_River_P
Issue No:-A
Date:-05/08/05
Page:-36 of 36

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