Page 1
Pasadena Blue Line
Metro Radio System
Maintenance Handbook
For
Canam Technology Inc.
AFL Works Order Nō.: Q109394
AFL product part Nō.: 60-056104 800MHz BDA
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
1 of 52
Page 2
Table of Contents
AMENDMENT LIST RECORD SHEET .................................................................................................4
INTRODUCTION ....................................................................................................................................... 5
Scope...........................................................................................................................................................................5
Purpose.......................................................................................................................................................................5
Glossary of Terms .....................................................................................................................................................6
AFL Drawing Symbol Keys......................................................................................................................................7
1. SAFETY CONSIDERATIONS ....................................................................................................... 8
1.1 Electric Shock Hazard .................................................................................................................................8
1.2 RF Radiation Hazard...................................................................................................................................8
1.3 Chemical Hazard..........................................................................................................................................9
1.4 Emergency Contact Numbers .....................................................................................................................9
2. OVERVIEW/SYSTEM DESCRIPTION .....................................................................................10
3. SPECIFICATIONS ........................................................................................................................ 11
3.1 800MHz Channelised BDA 60-056104 Parts Lists ..................................................................................11
3.2 Technical Specifications.............................................................................................................................13
3.2.5 800MHz 8 Channel Channelised BDA Technical Specification..............................................................13
3.3 Mechanical Specification ...........................................................................................................................14
3.3.1 800MHz BDA Wall Mount Case.............................................................................................................14
4. SYSTEM DRAWINGS ..................................................................................................................15
4.1 Drg. Nō. 60-056194, 800MHz BDA Case Outline Drawing....................................................................15
4.2 800MHz Channelised PBL BDA System Diagram..................................................................................16
5. SUB-UNIT MODULES.................................................................................................................. 17
5.1 Bandpass Filter (02-011601)......................................................................................................................17
5.1.1 Description ...............................................................................................................................................17
5.1.2 Technical Specification ............................................................................................................................17
5.2 2-Way Splitter/Combiner (05-002602) .....................................................................................................18
5.2.1 Description ...............................................................................................................................................18
5.2.2 Technical Specification ............................................................................................................................18
5.3 4-Way Splitter/Combiner (05-003302) .....................................................................................................19
5.3.1 Description ...............................................................................................................................................19
5.3.2 Technical Specification ............................................................................................................................19
5.4 ¼Watt 0- -30dB Switched Attenuator (10-000701) .................................................................................19
5.4.1 General Application .................................................................................................................................19
5.4.2 Switched Attenuators ...............................................................................................................................19
5.5 Low Noise Amplifiers (11-005902 & 11-006702) .....................................................................................20
5.5.1 Description ...............................................................................................................................................20
5.5.2 Technical Specification (11-005902).......................................................................................................20
5.5.3 Drg. Nō. 11-005902 LNA General Assembly Drawing...........................................................................21
5.5.4 Drg. Nō. 11-005970, LNA Circuit Diagram (RF)....................................................................................22
5.5.5 Drg. Nō. 11-005971, LNA Circuit Diagram (DC Wiring Layout) ..........................................................23
5.5.6 Technical Specification (11-006702).......................................................................................................24
5.5.7 Drg. Nō. 11-006702, LNA General Assembly Drawing..........................................................................25
5.5.8 Drg. Nō. 11-006770, LNA Circuit Diagram (RF Components)...............................................................26
5.5.9 Drg. Nō. 11-006771, LNA DC Wiring Diagram .....................................................................................27
5.6 10Watt Power Amplifier (12-002105).......................................................................................................28
5.6.1 Description ...............................................................................................................................................28
5.6.2 Technical Specification ............................................................................................................................28
5.6.3 Drg. Nō. 12-002105, 10W PA Assembly Drawing..................................................................................29
5.6.4 Drg. Nō. 12-001275, 10W PA Circuit Diagram ......................................................................................30
5.6.5 Drg. Nō. 12-002175C12, PA Parts List(1)...............................................................................................31
5.6.6 Drg. Nō. 12-002175C2, PA Parts List(2).................................................................................................32
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
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Date:-21/10/2003
Page:-
2 of 52
Page 3
5.6.7 Drg. Nō. 80-008450, PA Alarm Wiring Details ......................................................................................33
5.7 3 Stage Alarm Board (12-002201).............................................................................................................34
5.7.1 Description ...............................................................................................................................................34
5.7.2 Technical Specification ............................................................................................................................35
5.7.3 Drg. Nō. 12-002201, 3 Stage Alarm Board Assembly Drawing & Parts List..........................................36
5.7.4 Drg. Nō. 12-002270, 3 Stage Alarm Board Circuit Diagram...................................................................37
5.7.5 Generic Wall Enclosure Alarm Wiring Sketch ........................................................................................38
5.8 DC/DC Converter, 24V in, 12V 8A out (13-003011) ...............................................................................39
5.8.1 Description ...............................................................................................................................................39
5.8.2 Technical Specification ............................................................................................................................39
5.8.3 Photo of Regulator PCB (regulator heatsink side)...................................................................................39
5.9 Channel Control & Channel Selective Modules (17-002101 & 17-009127) ..........................................40
5.9.1 Channel Selective Module Description....................................................................................................40
5.9.2 Drg. Nō. 17-003080, Generic Channel Module Block Diagram..............................................................41
5.9.3 Channel Control Module Description ......................................................................................................42
5.9.4 Channel Controller Frequencies...............................................................................................................42
5.9.5 Channel Frequency Control Switch Table ...............................................................................................43
5.10 24V Single Relay Board (80-008902)........................................................................................................43
5.10.1 Description ...........................................................................................................................................43
5.11 24V 400W Flat-Pack Power Supply (96-300011) ....................................................................................44
5.11.1 Description ...........................................................................................................................................44
5.11.2 Technical Specification ........................................................................................................................44
6. INSTALLATION............................................................................................................................ 45
6.1 Initial Installation Record .........................................................................................................................45
6.2 General ........................................................................................................................................................45
6.3 Electrical Connections ...............................................................................................................................45
6.4 RF Connections ..........................................................................................................................................45
6.5 Commissioning ...........................................................................................................................................46
7. MAINTENANCE............................................................................................................................ 47
7.1 General Procedures....................................................................................................................................47
7.1.1 Fault Finding ............................................................................................................................................47
7.1.2 Downlink..................................................................................................................................................48
7.1.3 Uplink.......................................................................................................................................................48
7.1.4 Fault repair ...............................................................................................................................................48
7.1.5 Checking service ......................................................................................................................................49
7.1.6 Service Support ........................................................................................................................................49
7.2 Tools & Test Equipment............................................................................................................................49
7.3 Care of Modules .........................................................................................................................................50
7.3.1 General Comments...................................................................................................................................50
7.3.2 Module Removal (LNA’s, general procedure): .......................................................................................50
7.3.3 Module Replacement (general): ...............................................................................................................50
7.3.4 Power Amplifiers .....................................................................................................................................50
7.3.5 Low Power Amplifier Replacement.........................................................................................................51
7.3.6 Module Transportation:............................................................................................................................51
APPENDIX A INITIAL EQUIPMENT SET-UP CALCULATIONS............................................... 52
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
3 of 52
Page 4
AMENDMENT LIST RECORD SHEET
Issue
Nō.
Date Incorporated
by
Page No.’s
Amended
Reason for new issue
1 09/04/2003 CMH 1st Issue
Document Ref:-60-056100HBKM
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
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4 of 52
Page 5
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. This is a controlled release document and, as such,
becomes a part of Aerial Facilities’ Total Quality Management System. Alterations and
modification may therefore only be performed by Aerial Facilities Ltd.
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 ISO 9001: 1994 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.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
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Page 6
Glossary of Terms
Repeater or
Cell Enhancer A Radio Frequency (RF) amplifier which can simultaneously
amplify and re-broadcast Mobile Station (MS) and Base
Transceiver Station (BTS) signals.
Band Selective Repeater A Cell Enhancer designed for operation on a range of channels
within a specified frequency band.
Channel Selective
Repeater 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.
BTS Base Transceiver Station
C/NR Carrier-to-Noise Ratio
Downlink (D.L.) RF signals transmitted from the BTS and to the MS
Uplink (U.L.) RF signals transmitted from the MS to the BTS
EMC Electromagnetic Compatibility
GND Ground
DC Direct Current
AC Alternating Current
ID Identification Number
OIP3 Output Third Order Intercept Point = RF
+(C/I)/2
out
LED Light Emitting Diode
M.S. Mobile Station
N/A Not Applicable
N/C No Connection
NF Noise Figure
RF Radio Frequency
Rx Receiver
Tx Transmitter
S/N Serial Number
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
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Date:-21/10/2003
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Page 7
AFL Drawing Symbol Keys
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
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Page 8
1. SAFETY CONSIDERATIONS
1.1 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.
1.2 RF Radiation Hazard
“CAUTION: This equipment is approved for antennas mounted on fixed outdoor permanent
structures. A minimum separation distance of 2 metres must be maintained between the
radiating elements and any nearby persons. A maximum antenna gain of 21 dBi may be used.
Operating this equipment without regard to these restrictions will result in RF exposure levels
above the limits allowed by FCC rules.”
This equipment complies with part 90 of the FCC rules. Any changes or modifications not
expressly approved by the manufacturer could void the user’s authority to operate the
equipment.
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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Maintenance Handbook
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Page 9
1.3 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.
1.4 Emergency Contact Numbers
The AFL Quality Department can be contacted on:
Telephone +44 (0)1494 777000
Fax +44 (0)1494 777002
e-mail qa@aerial.co.uk
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
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Page 10
2. OVERVIEW/SYSTEM DESCRIPTION
The AFL 800MHz Off Air Amplifier for the Pasadena Blue line project is an 8 way
channelised RF amplifier. It’s application is as an air interface between the donor radio site
and the tunnel leaky feeder system. The unit is housed in an environmentally protected IP65
steel wall-mount case. Handles are provided for carrying the unit and the door is fitted with
locks. The unit interfaces with ‘N’ type female connectors for RF connections and heavy duty
connectors for routing of AC power supply input and alarm output wiring.
The unit is housed in an environmentally protected IP65 steel wall-mount case. Handles are
provided for carrying the unit and the door is fitted with locks. The unit interfaces with ‘N’
type female connectors for RF connections and heavy duty connectors for routing of AC
power supply input and alarm output wiring.
To provide adequate selectivity in the Downlink and Uplink paths, combline design
duplexers are used at the input and output ports. To provide the required gain to reach the
required signal levels, low-noise amplifiers (LNA’s) are used in each path, these being
followed by power amplifier modules to provide the required intermodulation performance.
Gain adjustment is available locally using switched attenuators.
Note that “Downlink” refers to the RF path from FO receiver to the leaky feeder port and that
“Uplink” refers to the RF path from the leaky feeder port to the FO transmitter.
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Page 11
3. SPECIFICATIONS
3.1 800MHz Channelised BDA 60-056104 Parts Lists
02-011601 900MHz 8POLE 7.5MHz B/W SMA 4
05-002602 900MHz SPLITTER/COMBINER, 20W 4
05-003302 4 WAY SPLITTER GSM 900MHz 8
10-000701 1/4W0-30dB SWITCHED ATTENUATOR 4
11-005902 900MHz LOW NOISE AMP WITH RELAY ASS 3
11-006702 GA 800-1000MHz LNA 29dB (WITH RELAY) 2
12-002105 900MHz 10W PA 24V 2.8A (ALARMS) 2
12-002201 3 STAGE AMPLIFIER ALARM BOARD 2
12-002220 3 STAGE ALARM PCB COVER 2
12-002826 ALARM BOARD ACRYLIC LENS 2
13-003011 DC/DC CONVERTER 24-12V 8A PCB SUB-ASS 2
13-003020 DC-DC CONVTR 24-12V HEATSINK 2
17-000126 CELL ENHANCER LABEL 6 DIGIT 1
17-001522 BASE PLATE 560 x 345mm 17-001520&9020 1
17-002101 CHANNEL CONTROL MODULE 4
17-002103 26WAY RIBBON CABLE LEAD 0
17-003022 MODULE PATTERNED LEAVE 16
17-003023 SUBRACK SIDE PANEL 8
17-003024 SUBRACK REAR BRACKET 16
17-003025 BOTTOM MODULE GUIDE 16
17-003028 MODULE SQUARE LEAVE 16
17-003029 TOP MODULE GUIDE 16
17-009026 C/E 820 x 620 x 250(3 HEATSINKS)2.0 CASE 1
17-009127 CHAN MOD 810-860MHz 30KHz 8p TCXO 16
17-009723 EQUIP. MTG PLATE No.4 4
17-009725 EQUIP. MTG PLATE No.6 2
80-008902 24V RELAY PCB ASSEMBLY 1
80-032320 10W PA HEATSINK (NEEDS 17-000526) 2
80-032322 10W PSU HEATSINK (NEEDS 17-000526) 1
90-010021 RF CABLE SUPFLEX SMA R/A MALE 100mm 5
90-010022 RF CABLE SUPFLEX SMA R/A MALE 200mm 3
90-010026 RF CABLE HIFLEX SMA R/A MALE 150mm 4
90-010028 RF CABLE HIFLEX SMA R/A MALE 350mm 1
90-010029 RF CABLE HIFLEX SMA R/A MALE 450mm 1
90-010131 RF CABLE SMA R/A-N PANEL JACK 200mm 1
90-010135 RF CABLE SMA R/A-N PANEL JACK 500mm 1
91-500011 PWR 3POLE PNL PLUG SEALED IP68 2
91-500015 PWR CON CAP SEALED with INT. THREAD 2
91-500016 PWR 6POLE PNL PLUG SEALED IP68 1
91-510010 PWR 3POLE FREE SOC.SEALED IP68 1
H/book Number:-60-056100HBKM
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Maintenance Handbook
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Page 12
91-510013 PWR CON CAP SEALED with Ext. THREAD 2
91-510014 PWR 6POLE FREE SOC.SEALED IP68 1
91-600014 'D' 9 WAY SOCKET S/B (NON FILTERED) 6
91-620002 'D' 25 WAY SOCKET/IDC TERMS 4
91-640003 MISC 26 WAY RIBBON CABLE SOCK. 4
91-700017 ICD 15 WAY 0.1' CONNECTOR 3
92-280033 Captive Screw 8
92-400017 GASKET FOR N TYPE CONNECTOR 3
93-540035 1K3 0.25W 1% RES MRS25 M:F 2
96-300011 24 V 400 W FLATPACK PWR SUPPLY 1
96-500003 AC FILTER 110V 5A 1
96-500005 DC INPUT FILTERS 1
96-700002 LED.GREEN 5mm SEALED IP66 1
96-700005 LED.RED 5mm SEALED IP66 1
96-900018 AC TRIP SWITCH (5 AMP M.C.B.) 1
96-920011 PROXIMITY SWITCH 1
96-920012 PROXIMITY SWITCH MAGNET 1
97-000002 BLACK MODULE CAGE RUNNER 8
97-300010 SUPPLY I/P COVERS 1
97-400010 BLACK PLASTIC HANDLE 37311 2
97-600001 SUBRACK FRONT HORIZ 2
97-600002 SUBRACK M2.5 STD TAP 8
97-900004 RUBBER FOOT FOR CELL ENHANCERS 4
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
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Page 13
3.2 Technical Specifications
3.2.5 800MHz 8 Channel Channelised BDA Technical Specification
Frequency Range:
857.0-861.0MHz
Band Width: Downlink: 25kHz
Uplink: 25kHz
No. of Paths: 2
No. of RF Ports: 2
No. of Fibre Connections: N/A
RF Connector: N type female
RF Impedance:
50Ω
VSWR: Better than 1.5:1
Downlink Gain: 95 dB min
Uplink Gain: 95 dB min
Gain Adjustment: 0 to 30 in 2dB steps
Downlink PA: 10W Class A Linear
Downlink Power: 8 Carriers at +17dBm
Uplink PA: 10W Class A Linear
Uplink Power: 8 Carriers at +17dBm
Duplexer UP/DN Isolation: >80 dB
Passband Ripple: <±1.5 dB
Noise Figure: Uplink <6 dB at maximum gain
Downlink <5 dB at maximum gain
In-Band Spurious: Better than –36dBm downlink
Better than –36dBm uplink
(measure with 30KHz BW with max gain setting)
MTBF: >50,000 hours
Supply Input Voltage: 110V AC
Alarms Fitted: Alarm: Volts free contacts (Amps, PSU,door)
Alarm indicator- Red LED
Power Indicator-Green LED
Downlink
Uplink
812.0-816.0MHz
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
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Page 14
3.3 Mechanical Specification
3.3.1 800MHz BDA Wall Mount Case
Size:
height:
width:
depth:
820 mm
620 mm
250 mm
(excluding connectors, heatsinks, handles and feet)
Fixings:
Weight:
Temperature Range:
operational:
storage:
Humidity:
Environmental Protection:
Finish:
Case:
Heatsinks:
Handles:
4 holes on 700 mm (h) x 667 mm (w)
50 kg (approx.)
-20°C to +50°C
-40°C to +70°C
10% to 95% non-condensing
IP65 (with door closed and all ports terminated)
RAL 7032
Black anodised
Black (where fitted)
Supply Cable: Unit supplied with 3-pin IP68 connector for
customer interface with AC input.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
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Date:-21/10/2003
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Page 15
4. SYSTEM DRAWINGS
4.1 Drg. Nō. 60-056194, 800MHz BDA Case Outline Drawing
A
B
C
D
E
BYDATEDESCRIPT IO NNo
MNR
01/07/03
F
3
A
89
CONNECTION TO BDA
7
6
5
Pr oduct r ef :
Aerial Facilities
Lim i ted
BP A 800MH z
620 [2'-0.4"]
700 [2'-3.6"]
CE- / - N
4
TO ANTENNA
ISSUE
60-056194
P RODU CTI ON I SS UE
1A
PASADENA BLUE LINE. LOCATI ON 2.
TITLE
700 [2'-3.6"]
LOCKABLE
DOOR
CATCH
High
voltage
DANGER
ALARMS
667 [2'-2.3"]
CUSTO MER DRAWING.No
BDA 800MHz. 8 CHANNEL OUTLINE D RAWING
England
Fax : 01494 777000
Aerial Facilities Limited
Fax : 01494 777002
Heavy
CAUTION
3
250 [9.9"]
12
A
B
H/book Number:-60-056100HBKM
PSU ALARM
909 [2'-11.8"]
820 [2'-8.3"]
C
D
M6 EA RTH STUD
115V AC INPUT
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILIT IES LTD.
REPRO DUCTION O R USE O F T HIS DESIG N BY O THERS IS
PERMIS SIBL E O NLY IF EXPRES SLY AUTHO RISED IN WRITING
BY AERIAL FACILITIES LTD.
01/07/03
DATE
MATERIAL: MILD STE EL
FINISH: PAINTED TO RAL 9017
WALL FIXINGS : M8 (5/16")
RF CONNECTORS: N TYPE FEMALE
ENVIRONMENTAL CLASS.: IP65
SEMI-GLOSS TRAFFIC BLACK
MNR
DRAWN
E
1:8
SCALE
TOLERANCES
NO DECIMA L PL ACE ± 1 m m
ON E DECIM AL PL ACE ± 0. 3m m
TWO DECIMAL PLACES ± 0.1 mm
APPD
1 23456789
PB GD
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
CHKD
F
800MHz BDA (Pasadena Figuero Tunnel)
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4.2 800MHz Channelised PBL BDA System Diagram
-78dBm
30dB
20dB
dB
812-815MHz
800MHz
-79dBm
-49dBm
-29dBm
-30dBm
05-002602
17dBm
-11dBm
857-860MHz
19dBm
11-005902
12-002105
dB
05-003302
-10dBm
20dB
11-00590211-006702
-30dBm
20dB
812.7625MHz
05-002602
-20dBm
814.7625MHz
812.9375MHz
813.2375MHz
815.4375MHz
814.4375MHz
20dB
20dB
20dB
20dB
814.9375MHz
20dB
20dB
813.7625MHz
20dB
T11
-20dBm
05-003302
857.7625MHz
20dB
20dB
859.7625MHz
859.9375MHz
20dB
20dB
858.2375MHz
857.9375MHz
20dB
20dB
859.4375MHz
860.4375MHz
20dB
20dB
05-002602
858.7625MHz
20dB
-30dBm
05-003302
dB
05-002602
-30dBm
-29dBm
11-005902
-49dBm
20dB
30dB 30dB
-79dBm
857-861MHz
-78dBm
H/book Number:-60-056100HBKM
05-003302
dB
30dB
12-002105 11-00670211-005902
-10dBm
-11dBm
19dBm
812-815MHz
17dBm
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
60-056104
LOCATION TWO
16 of 52
Page 17
5. SUB-UNIT MODULES
5.1 Bandpass Filter (02-011601)
5.1.1 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 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.
5.1.2 Technical Specification
PARAMETER SPECIFICATION
Response Type: Chebyshev
Frequency Range:
857-861MHz (Dlink)
812-816MHz (Ulink)
Bandwidth: <7.5 MHz (tuned to requirements)
Number of Sections: 8
Insertion Loss: 1.2 dB
VSWR: better than 1.2:1
Connectors: SMA
Power Handling: 100W max
Temperature range
operation: -10°C to +55°C
storage: -40°C to +70°C
Weight: 3 kg (typical)
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
17 of 52
Page 18
5.2 2-Way Splitter/Combiner (05-002602)
5.2.1 Description
The Splitter/Combiner used is a device for accurately matching two or more RF signals to
single or multiple ports; most usually within a specified frequency band, whilst maintaining
an accurate 50Ω load to all inputs/outputs and ensuring that the VSWR and insertion losses
are kept to a minimum. Any unused ports will be terminated with an appropriate 50Ω load.
5.2.2 Technical Specification
PARAMETER SPECIFICATION
Frequency Range:
Bandwidth:
Narrowband: 800-1000MHz
Broadband: 600-1300MHz
Narrowband: 300 MHz
Broadband: 700 MHz
Inputs: 1
Outputs: 2
Isolation:
Insertion Loss:
Narrowband: >20 dB
Broadband: >18 dB
Narrowband: 3.3 dB
Broadband: 3.5 dB
VSWR Input & Output: Better than 1.3:1
Impedance:
50 ς
Connectors: SMA female
Weight: 200gms
54 x 44 x 21mm (including
connectors)
Power Rating:
Size:
Splitter: 20 Watts
Combiner: 0.5Watts
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
18 of 52
Page 19
5.3 4-Way Splitter/Combiner (05-003302)
5.3.1 Description
The Splitter/Combiner used is a device for accurately matching two or more RF signals to
single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and
ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports
will be terminated with an appropriate 50Ω load. This splitter is used in conjunction with
the previously mentioned 05-002602 to split & combine the signal before and after the
channel selective modules (in both up & downlink paths).
5.3.2 Technical Specification
PARAMETER SPECIFICATION
Frequency range: 700-1000MHz
Bandwidth: >200MHz
Rejection: >14dB
Insertion loss: 6.5dB (typical)
Connectors: SMA
Weight: <1.5kg
Temperature
range:
operational
storage
-10ΒC to +55ΒC
:
-40ΒC to +70ΒC
5.4 ¼Watt 0- -30dB Switched Attenuator (10-000701)
5.4.1 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
(as in this case), 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.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
19 of 52
Page 20
5.5 Low Noise Amplifiers (11-005902 & 11-006702)
5.5.1 Description
The Gallium-Arsenide low noise amplifiers used in the unit 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.
5.5.2 Technical Specification (11-005902)
PARAMETER SPECIFICATION
Frequency Range: 800 – 960MHz
Bandwidth: <170MHz
Gain: 19.5dB (typical)
1dB Compression Point: 21dBm
OIP3: 33dBm
Input/Output Return Loss: >20dB
Noise Figure: 1dB (typical)
Power Consumption: 190mA @ 24V DC
Supply Voltage: 10-24V DC
Connectors: SMA female
Temperature Range:
operational: -10°C to +55°C
storage: -40°C to +70°C
Size: 90 x 55 x 30.2mm
Weight: 280gms (approximately)
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
20 of 52
Page 21
5.5.3 Drg. Nō. 11-005902 LNA General Assembly Drawing
12345
678
9
25
3
D
IN 2 PLACES
4
2
4 24
A
B
C
DC PCB
327
6
RF PCB
E
BYDAT EDESCRI PTI ONNo
MNR
MNR
25/03/02
08/04/02
ISSUE
F
A
3
11-005902
2 25
27
16 23
1
10
20
2
2
PRODUCTION ISSUE (ECN2539 )
1A
PRE -PRODUCTION ISS UE
AA
1533
IN 2 PLACES
5
5
11-005925 ISS.1
L4
L2
C4
R12
TR2
C10
R10
R11
L6
R4
R15
L5
C2
C1
R6
R5
R3
R1
R2
CPL 2
R13
R14
8 26 30 27
2
2
17 24
R46
R48
R44R43
REG1
C9 R47
IC2
C7
R49
R50
C12
R51
+
J3
C19
C16
J5
J4
J2 J1
C17
C10
+
R52
1
1
C
C8
C15
+
+
+
C13
R38
C6
R40
+
REG 3
ABC
R42
R59
IC4
k
VR1
+
+
R41
IC3
+
C14
ZD 3
R53
+
R39
+
C4
CON1
VIN
D3
R55
R54
RL1
C5
5
VOUT
R58
Limited
Aer ial Fa cilities
21222
2819
2
2. LIDS,ITEMS 2 & 3 AND LABELS,
1. SOLDER JOINTS TO BE MADE USING OR
ITEMS 31,34 & 35,TO BE FITTED ON TEST
900MHz LOW NOI SE AMPLIF IER
WITH RELAY ASSEMBLY DRAWING
TITLE
CUSTO MER DRG.No
England
Aerial Facilities Ltd
Tel : 01494 777000
Fax : 01494 777002
IN 4 PLACES
see note 2
31
see note 2
35
LABEL DETAILS - SCALE 1:1
1 23 456 78 9
COMPONENTS TO BE ADDED TO 11-0 03912,ITEM 15,DC PCB SUB- ASSEMBLY
COMPONENTS TO BE ADDED TO 11-0 05911,ITEM 16,RF PCB SUB-ASSEMBLY
A
B
H/book Number:-60-056100HBKM
1.5: 1
see note 2
AFL
DEVICES
SENSITIVE
FOR HANDLING
E L E C TR O S TA TI C
OBSERVE PRECAUTIONS
ATTE NTION
AFL
C
AFL
34
D
OUT
0086
Aerial Facilities
Limi ted
********
11-005902
800-1000MHz
20dB 12-24vDC
**/**/20 **
REF .
FREQ.
GAIN
S/N
DAT E
IN
THIS IS A PROPRIETARY DESIGN OF AERIAL F ACILITIES LT D.
DAT E
DRAWN
E
SCALE
BY A ERIAL F ACIL IT IES LT D.
PERMISSIBLE O NLY IF EXPRESSL Y AUTHORISED IN WRITING
REPRODUCTION OR USE OF T HIS DESIGN BY OTHERS IS
TWO DECIMAL PL ACES ± 0 .1mm
ONE DECIMAL PL ACE ± 0 .3mm
NO DECIMA L P LA CE ± 1 mm
TO L ERA NCES
IB
APPD
AC
AL L DIME NSIO NS A RE IN m m
MNR 25/03/02
CHKD
UNL ESS O T HERWISE STA TED
F
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
21 of 52
Page 22
5.5.4 Drg. Nō. 11-005970, LNA Circuit Diagram (RF)
A
B
C
D
E
BYDAT EDESCRIP TIO NNo
MNR
MNR
F
3
A
R13
RF OUT
SAT
0R0(NOM I)
SAT SAT
R14 R15
51R
R10
08/04/02
PRODUCTION ISSUE(ECN2539)
1A
21/03/02
PRE-PRODUCTION ISSUE
AA
ISSUE
11-005970
89
7
900MHz LOW NOISE AMPLIFIER (RF)
CIRCUIT DIAGRAM
C1
22R22R
+ve1
-ve1
R1 R2
R11
10K
C3
100pF
C5
10uF
+
R7
150R
100pF
C9
R5
150R
L5
12nH
4.7pF
+ve2
S
D
FSU02LG
L3
82nH
C7
G
L1
C11
1.0pF
-ve2
220pF
TR1
C2
100pF
R3 R4
22R 22R
C6
10uF
R12
10K
C4
+
R8
150R
100pF
C10
FSU02LG
L4
82nH
4.7pF
SG
D
L2
C12
C8
220pF
R6
150R
L6
12nH
TR2
TITLE
1.0pF
CUSTO M ER DRAWING .No
England
Aerial Facilities Limited
56
Tel : 01494 777000
Fax : 01494 777002
4
N.T.S
1 23456789
A
B
H/book Number:-60-056100HBKM
R9
51R
C
Issue No:-1
SCALE
CPL 1 CPL 2
1D1304-3 1D1304-3
THIS IS A P ROP RIET ARY DE SIG N O F AE RIAL F ACIL ITIE S L TD.
REPRO DUCT IO N OR USE O F T HIS DE SIG N BY OT HERS IS
PERMISSIBLE O NLY IF EXPRESSLY AUTHO RISED IN WRITING
BY AERIAL FACILIT IES LTD.
TO L ERA NCES
IB
APPD
RF IN
D
E
DAT E
AC
MNR 21/03/02
CHKD
DRAWN
F
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Date:-21/10/2003
Page:-
22 of 52
23
NO DECIM AL PL ACE ± 1 m m
ONE DECIMAL PL ACE ± 0.3 mm
TWO DECIMAL PLACES ± 0.1 mm
1
AL L DIMENS IONS ARE IN m m
UNLESS OT HERWISE STATED
Page 23
5.5.5 Drg. Nō. 11-005971, LNA Circuit Diagram (DC Wiring Layout)
A
CO N1
9 WAY 'D'
PIN OUTS
B
REL AY CO MM ON *
10-24V DC I/P
1
REL AY CO NT ACT BAD *
GROUND
4
3
2
4 CON1
3 CON1
2 CON1
C
REL AY CO NT ACT G O O D *
5
5 CON1
6
TTL VOLTAGE SET8TTL ALARM/0v GOOD9OC GOOD/0v BAD
7
7 CON1
8 CON1
D
RF
OUT
9 CON1
E
08/04/02
PRODUCTION ISSUE(ECN2539) MNR
1A
MNR
26/03/02
PRE-PRODUCTION ISSUE
AA
F
3
BYDAT EDESCRIP TIO NNo
ISSUE
A
11-005971
89
7
C
+8V
O
G
REG 3
LM7808CT
I
DC PCB
SEE 11-003971
BA
J4
FOR CIRCUIT DIAGRAM
J4 1
J4 2
J5 1
J5 2
J5
900MHz LOW NOISE AMPLIFIER
SCHEMATIC DIAGRAM
TITLE
CUSTO M ER DRAWING .No
England
Aerial Facilities Limited
56
Tel : 01494 777000
Fax : 01494 777002
4
-
+ve1 (6.75v @ 64mA)
DC INPUT DC OUT PUT
+ve2 (6.75v @ 64mA)
-ve1
-ve2
SCALE
SEE 11-005970
FOR CIRCUIT DIAGRAM
1 23456789
A
B
H/book Number:-60-056100HBKM
RF PCB
C
800MHz BDA (Pasadena Figuero Tunnel)
Issue No:-1
* ONLY APPLIES TO 11-005902 AMPLIFIER
IN
RF
D
E
Maintenance Handbook
Date:-21/10/2003
Page:-
THIS IS A P ROP RIET ARY DE SIG N O F AE RIAL F ACIL ITIE S L TD.
REPRO DUCT IO N OR USE O F T HIS DE SIG N BY OT HERS IS
PERMISSIBLE O NLY IF EXPRESSLY AUTHO RISED IN WRITING
BY AERIAL FACILIT IES LTD.
APPD
DAT E
MNR 26/03/02
CHKD
DRAWN
23 of 52
23
TO L ERA NCES
NO DECIM AL PL ACE ± 1 m m
ONE DECIMAL PL ACE ± 0.3 mm
TWO DECIMAL PLACES ± 0.1 mm
IB
1
AC
AL L DIMENS IONS ARE IN m m
UNLESS OT HERWISE STATED
F
Page 24
5.5.6 Technical Specification (11-006702)
PARAMETER SPECIFICATION
Frequency Range: 800 – 1000MHz
Bandwidth: <200MHz
Gain: 29dB (typical)
1dB Compression Point: 20dBm
OIP3: 33dBm
Input/Output Return Loss: >18dB
Noise Figure: 1.3dB (typical)
Power Consumption: 180mA @ 24V DC
Supply Voltage: 10-24V DC
Connectors: SMA female
Temperature Range:
operational: -10°C to +55°C
storage: -40°C to +70°C
Size: 90 x 55 x 30.2mm
Weight: 290gms (approximately)
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
24 of 52
Page 25
5.5.7 Drg. Nō. 11-006702, LNA General Assembly Drawing
12345
678
9
A
B
C
D
E
BYDAT EDESCRI PTI ONNo
DBS
F
A
3
RF PCB
IN 2 PLACES
5
27
see note 2
DC PCB
IN 4 PLACES
31
see note 2
AFL
25
20
IN 4 PLACES
6
327
I/P
4
2
2
AFL
5
16 23
1530 27
Issue B
11-006725
see note 3
34
-Ve1 +V e1
26
R43 R4 4
R51 R50
J4J5
R59
8 3
RL1
2
22
CON1
AFL
21
2
5
24
17 33
2
2
R40
ACB
REG 3
2
24
4
O/P
CON2
OUTPUT
R12
R11
R10
C7
R9
C11
C6
L3
C5
R8
+V e2
C10
-Ve2
R7
C9
R6
TR2
L2
R4
R5
C4
C2R3L1
R1
26/3/02
MINOR CHANGE DBS
AB
see note 2
25
2
19/2/02
PROTOTYPE ISSUE
AA
ISSUE
11-006702
800-1000MHz LOW NOISE AMP. (RELAY)
(RF AND DC) 29dB GAIN. GENERAL ASSY
TITLE
10
CUSTO MER DRG.No
England
Aerial Facilities Ltd
Tel : 01494 777000
Fax : 01494 777002
1
1 23 456 78 9
A
O/P
I/P
1.5: 1
CIRCUIT RE F
J4/ J5
211
QTY
6109
ITEM No.
DESCRIPTION
ICD 2 WAY 0.1" PITCH JUMPER HEA DER
DRG No .
COMPONENTS TO BE ADDED TO 11-003912,ITEM 15,DC PCB SUB-ASSEMBLY
COMPONENTS TO BE ADDED TO 11-003912,ITEM 15,DC PCB SUB-ASSEMBLY
91-700072
R43 on 11-003912
33R 0.125W 2% RESISTOR CHIP
93-630015
R44 on 11-003912
39R 0.125W 2% RESISTOR CHIP
93-630016
R59 on 11-003912
REG3 on 11- 003912
R40 on 11-003912
R50/51 on 11-003912
112
36 1
12811
LM7808CT 8V VOLTAGE REGULATOR
56R 0.125W 2% RESISTOR CHIP
0R0 0.5W 1% 2010 RESISTOR CHIP
4.7KR 0.125W 2% RESISTOR CHIP93-630049
94-300018
93-630135
93-630018
96-910009 5V DPDT SMD G6H-2F LOW PROFILE 35 1 RL1 on 11-00 3912
B
CIRCUIT RE F
R11 on 11-006711
R101
R12
1
2
QTY
6
ITEM No.
DESCRIPTIONDRG No .
0R0 0.1W 2% 0805 CHIP RESISTOR93-630079
Select on test
Select on test
COMPONENTS TO BE ADDED TO 11-006711,ITEM 16,RF PCB SUB-ASSEMBLY
COMPONENTS TO BE ADDED TO 11-006711,ITEM 16,RF PCB SUB-ASSEMBLY
C
D
19 28
THIS IS A PROPRIETARY DESIGN OF AERIAL F ACILITIES LT D.
DAT E
1. SOLDER JOINTS TO BE MADE USING OR
2. LIDS,ITEMS 2 & 3 AND WARRANTY LABELS,ITEM 31,TO BE FITTED ON TEST
3. LABEL,ITEM 34,TO BE FITTED ON TEST.FOR LAYOUT SEE DRAWING 11-006790
DRAWN
E
SCALE
BY A ERIAL F ACIL IT IES LT D.
PERMISSIBLE O NLY IF EXPRESSL Y AUTHORISED IN WRITING
REPRODUCTION OR USE OF T HIS DESIGN BY OTHERS IS
DBS 25/03/02
TWO DECIMAL PL ACES ± 0 .1mm
ONE DECIMAL PL ACE ± 0 .3mm
NO DECIMA L P LA CE ± 1 mm
TO L ERA NCES
APPD
AC IB
AL L DIME NSIO NS A RE IN m m
UNL ESS O T HERWISE STA TED
CHKD
F
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
H/book Number:-60-056100HBKM
Issue No:-1
Date:-21/10/2003
Page:-
25 of 52
Page 26
5.5.8 Drg. Nō. 11-006770, LNA Circuit Diagram (RF Components)
A
B
C
D
E
F
3
BYDAT EDESCRIP TIO NNo
DBS
A
RF OUTPUT
R1 1
R1 0 R1 2
SELECT VALUES ON TEST
220pF
11/07/02
PRODUCTION ISSUE(ECN2538) MNR
1A
18/2/02
PROTOTYPE ISSUE
AA
ISSUE
11-006770
89
7
1.8pF
C6
L3
82nH
L2
6n8H
TR2
CL Y2
D
G S
100pF
R4 R5
430R 1K2
C1 1
R9
R8
100pF
REFER TO CIRCUIT COMPONENT LIST FOR FURTHER INFORMATION
TITLE
800-1000MHz LOW NOISE AMP. 29dB
Aerial Facilities Limited
(RF) PCB CIRCUIT DIAGRAM
England
CUSTO M ER DRAWING .No
56
Tel : 01494 777000
Fax : 01494 777002
CONNECTIONS TO DC BOARD
1 23456789
A
15pF
R3
10R
4
C1 0 C7C5
-Ve1 +Ve1
-Ve2 +Ve2
C4
-
C9
100pF 10nF
82nH
L1
R6 R7
180R 180R 18R 22R
100pF
TR1
ATF-33143
D
C3 C2
R1 R2
C8
10nF 1 00pF
G S
910R 470R
C1
100pF
THIS IS A P ROP RIET ARY DE SIG N O F AE RIAL F ACIL ITIE S L TD.
SCALE
23
REPRO DUCT IO N OR USE O F T HIS DE SIG N BY OT HERS IS
PERMISSIBLE O NLY IF EXPRESSLY AUTHO RISED IN WRITING
BY AERIAL FACILIT IES LTD.
TO L ERA NCES
NO DECIM AL PL ACE ± 1 m m
ONE DECIMAL PL ACE ± 0.3 mm
TWO DECIMAL PLACES ± 0.1 mm
IB
APPD
DAT E
1
AL L DIMENS IONS ARE IN m m
UNLESS OT HERWISE STATED
AC
RF INPUT
B
C
D
E
DBS 18/2/02
CHKD
DRAWN
F
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
26 of 52
Page 27
5.5.9 Drg. Nō. 11-006771, LNA DC Wiring Diagram
A
B
*
*
*
REL AY CONT ACT G OO D
REL AY CO MM ON
10-24V DC I/P
1
CO N1
9 WAY 'D'
PIN OUTS
RELAY CONT ACT BAD
GROUND
3
2
2 CON1
3 CON1
5
4
6
5 CON1
4 CON1
C
TTL VOL TAG E SET8TTL ALARM/0 v GO OD9OC GOOD/0v BAD
7
7 CON1
8 CON1
D
RF
OUT
9 CON1
= ONLY APPLIES TO 11-006702
*
E
BYDA TEDESCRI PTI ONNo
DBS
F
3
A
19/2/02
ISSUE
11-006771
89
PROTOTYPE ISSUE
AA
7
C
+8V
O
BA
G
REG 3
LM7808CT
I
DC PCB
SEE 11-003971
TITLE
800-1000MHz LOW N OISE AMPLIFIER 29dB
(RF AND DC) SCHEMATIC DIAGRAM
FOR CIRCUIT DIAGRAM
J4 1
J4 2
J5 1
J5 2
J4
J5
CUSTO M ER DRAWING .No
England
Aerial Facilities Limited
56
Tel : 01494 777000
Fax : 01494 777002
4
-
+ve1 (6.75v @ 45mA)
-ve1
DC INPUT DC OUT PUT
-ve2
+ve2 (6.75v @ 70mA)
SCALE
SEE 11-006770
RF PCB
FOR CIRCUIT DIAGRAM
1 23456789
A
B
H/book Number:-60-056100HBKM
C
800MHz BDA (Pasadena Figuero Tunnel)
Issue No:-1
IN
RF
D
Maintenance Handbook
Date:-21/10/2003
23
THIS IS A PROPRIETARY DESIGN OF AE RIAL FACILITIES L TD.
REPRO DUCT IO N OR USE O F THIS DESIG N BY OT HERS IS
PERMISSIBLE O NLY IF EXPRESSLY AUTHO RISED IN WRITING
BY AERIAL FACILIT IES LTD.
TO L ERA NCES
NO DECIM AL PL ACE ± 1 m m
ONE DECIMAL PL ACE ± 0.3 mm
TWO DECIMAL PLACES ± 0.1 mm
APPD
DAT E
1
AL L DIMENS IO NS ARE IN m m
AC IB
DBS 19/2/02
CHKD
DRAWN
E
Page:-
27 of 52
UNLESS OT HERWISE STATED
F
Page 28
5.6 10Watt Power Amplifier (12-002105)
5.6.1 Description
The power amplifiers fitted to this unit (up & downlink paths) are multi-stage, solid state
power amplifiers. Class A circuitry is employed throughout the device to ensure excellent
linearity over a wide dynamic frequency range. All the semi-conductor devices are very
conservatively rated to ensure low device junction temperatures and a long, trouble free
working lifetime.
The power amplifiers should require no maintenance over their operating life. Under no
circumstances should the cover be removed or the side adjustments disturbed unless it is
certain that the amplifier has failed; since it is critically aligned during manufacture and
any re-alignment will require extensive test equipment.
5.6.2 Technical Specification
PARAMETER SPECIFICATION
Frequency range: 800 - 970MHz (tuned to spec.)
Bandwidth: 10 - 100MHz (typical, tuned to
spec.)
Maximum RF output: >10.0 Watt
Gain: 30dB
1dB compression point: +40dBm
3rd order intercept point: +50dBm
VSWR: better than 1.5:1
Connectors: SMA female
Supply: 2.8A @ 24V DC
Temperature range:
operational:
storage:
-10°C to +55°C
-40°C to +70°C
Weight: 1.5 Kg (case only)
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
28 of 52
Page 29
5.6.3 Drg. Nō. 12-002105, 10W PA Assembly Drawing
2
A
SOL DER PIN 1 TO TRACK
( HIG HLIG HT ED) ROU TE CL EA R
23
PIN 3 NO T USE D
O F PI N 2 WIRE & D1 "K "
8
SOL DER PIN 2 TO EARTH.
ROUTE CLEAR O F DIODE LEG S.
2
18
23
12-002105 1C
302710
SO L DER T O D1 " K" T RACK
K A
REG3
C28
+
C20C24
16
21
16
17
R4
C21
C26C25
+
+
1
C22
+
C17
REG2
Aerial Facili ties Ltd
C15
R3
L4
+
(HEATSINK NOT SHOWN)
PLAN VIEW WITH LID REMOVED
THIRD ANGLE PROJECTION
28
IN 3 POSNS
10
CO NNECT A S SHO WN
C14
+
C16 + C23
R2
C11
REG1
C13
+
+
C12
+
C8
C5 +
C7
C29
D1
TR3
L6
C19
2
2
17
FIT WITH CHAMFER
13
FACING THIS WAY: -- >
16
18
4
POWE R AMPLIFIER,10W,900MHz,2.8A ,24V,
ASSEMBLY WITH ALARMS.
TITLE
CUSTOME R DRG.No ISS
Engl and
Fax ( 0494)764838
Aerial Facilities Ltd
Little Chalfont(0494)763636
(HEATSINK NOT SHOWN)
L5
3
TR2
C18
C10
C9
L3
TR1
L2
C4
R1
C3
C2
L1
C1
2
21
2
FIT WITH CHAMFER
12 21
FA CING THIS WA Y: - - >
14 17
SEE DETAIL
FIT WITH CHAMFER
FA CING THIS WA Y: - - >
20
IN 4 POSNS
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LT D.
REPRO DUCTIO N O R USE O F T HIS DE SIG N BY O THE RS IS
1:1
SCALE
PERMISSIBLE ONLY IF EXPRESSL Y AUTHORISED IN WRITING
BY AERIAL FACILITIES LT D.
TO L ERANCES
NO DECI MAL PL ACE ± 1 mm
ONE DECIMAL PLACE ± 0 .3m m
TWO DECIMAL PLACES ± 0.1 mm
25
DBS 30/06/93
ALL DIM ENSIO NS A RE IN mm
1
4
7
16
IN 2 POSNS
==
15.00
(ITEM 14)
CROP TABS AS SHOWN
26
DRAWN DATE
DJL
UNLESS OTHERWISE STATED
CHKD APPD
RS
SEW
DATEDESCRIPT IO NNo
9/6/99
23/ 12/ 98
H/book Number:-60-056100HBKM
5 19 22
NOTES:
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
1. COMPLETE ALL SOLDERING USING ITEM
2. REFER TO 12-002190 FOR LABELING INFORMATION.
3. ASSEMBL E ITEMS 3 & 5 TO GET HER USING A T HIN F ILM O F ITEM
29 of 52
ISSUE
PRO DUCTIO N IS SUE ( CR0962)
CR1676 12/4/00
(CR0962)
1 PRO DUCTIO N ISS UE 2 /7 /93 DBS
1C
1B
1A
Page 30
5.6.4 Drg. Nō. 12-001275, 10W PA Circuit Diagram
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
30 of 52
Page 31
5.6.5 Drg. Nō. 12-002175C12, PA Parts List(1)
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
31 of 52
Page 32
5.6.6 Drg. Nō. 12-002175C2, PA Parts List(2)
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
32 of 52
Page 33
5.6.7 Drg. Nō. 80-008450, PA Alarm Wiring Details
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
33 of 52
Page 34
5.7 3 Stage Alarm Board (12-002201)
5.7.1 Description
Amplifier Alarm Boards are fitted to monitor the bias conditions of AFL Class A
amplifiers which remain constant in normal operation. Any departure from normal bias
conditions is a result of device failure, excess temperature, over-driving or oscillation
(excessive power).
In normal operation, the Class A bias circuit of the amplifier develops a constant voltage
of 1.20V across the collector current setting resistor. The Amplifier Alarm Board is a
window comparator device, which is adjusted to sense a departure from this condition.
Several different alarm outputs are provided to simplify interfacing, (Relay Contact, Open
Collector, and TTL Logic Levels)
The basic version of the Alarm Board (12-002801) monitors a single amplifier stage. A
three-stage version (12-002201) is used on complex amplifiers where three separate
comparators have their outputs logically combined to a common output stage. Failure of
any one stage will activate the alarms.
Note that the alarm board has a green Light Emitting Diode located near to the centre of
the printed circuit board, which is illuminated on ‘Good’, and extinguished on ‘Alarm’. It
is therefore a simple matter to identify an active module failure, by searching for an
Alarm Board which has its green LED extinguished. A simple test of the alarm board is
possible by shorting across the monitor inputs, pins 1 and 2, 3 and 4 or across pins 5 and
6. This last monitor input is inactive if the board has been converted to a two way alarm
board. (Refer to relevant amplifier alarm wiring diagram.)
1) Volt-free change over relay contacts.
2) Open collector NPN transistor pulls low on alarm.
3) TTL driver.
The use of precision voltage sources and resistors has eliminated the need for initial
adjustment or calibration, and the board will function correctly with a wide variation in
power supply voltage (8 to 30 volts, nominal supply is 12 or 24Volts).
There are two selectable link options on the three-way board:
LINK1 - Removed to convert to two-way alarm board.
LINK2 - Removed to isolate 0V from chassis earth.
The one way alarm board only has the 0V isolation link (LINK2) fitted.
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
H/book Number:-60-056100HBKM
Issue No:-1
Date:-21/10/2003
Page:-
34 of 52
Page 35
5.7.2 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
Mechanical life:
Connector details: 15-way 0.1" pitch
Temperature range:
operational: -10°C to +55°C
storage: -30°C to +70°C
Relay isolation: 1.5kV
>2x107 operations
Relay approval: BT type 56
PCB Size:
74 x 56mm (3 stage)
54 x 56mm (1 stage)
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
35 of 52
Page 36
5.7.3 Drg. Nō. 12-002201, 3 Stage Alarm Board Assembly Drawing & Parts List
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
36 of 52
Page 37
5.7.4 Drg. Nō. 12-002270, 3 Stage Alarm Board Circuit Diagram
A
17 18
16
15
B
C
CONN
7
+8v TO +30v
FZT751
TR 6
VCC
D
R41
22K
R40
2K 2
1K
R38
3K
R36
E
D9
3v3
TR 4
TR 4
R39
BCW71 BCW71
R37
1. 0
C8
F
100n
C6
LK 2
560R
2K 4
R26
0v
R25
1K
G
D6
14
270K
+-IC1
12
13
R24
100K
CONN8
4111
+
3
H
ALARM
CONTACTS
CONN10
9CONN
6
7
8
R27
1K
RL1/2
C4
IC1
-
2
14
LOW
CONN6
INPUT
CONN5
13
MONI TOR 3
100K
R23
R21
100K
D4
I
D7
8
OP AMP
R28
+-IC1
270K
10
9
100n
100K
R22
D5
J
LK 1
CONN11
TTL ALARM
K
L
M
1
A
18
0V15CONN
CONN
CONN
O/C ALARM
+5v TTL I N
12
R35
1K
10K
R33
10K
R31
2
+7. 5v
CONN
14
13
ALARM 0v
12-002270
17
TR 3
BCW71BCW71
4K 7
R34
TR 2
4K 7
R32
LE D 1
D8
RL1
REL
-
+
BCW71
TR 1
2K 2
R30
3 ST AGE AM PLIFIER ALARM BO ARD
CIRCUIT DIAG RAM
TI TL E
CUSTOMER DRA WING No
England
3
2
4
RL2/2
NOT USE D
Tel : 01494 777000
Fax : 01494 777002
Ae ria l F acil itie s Lim ite d
N.T.S
10 11 12
78 9
6
1234 5
A
14
R18
270K
-
IC2
+
12
1K
R17
LOW HI
CONN4
INPUT
CONN3
MONITOR 2
R9
+7. 5v +7. 5v
VCC VCC
CONN2
INPUT
1CONN
MONITOR 1
HI LOW HI
7
-
IC3
+
5
6
R1
1K 8
13
R19
R16
100K
1
4
11
+-IC2
3
100K
R15
R13
100K
D2
14
IC3
R10
+
270K
12
1K
R8
R7
100K
R5
100K
2
-
13
R11
1K
C2
100K
1
4
11
+-IC3
2
3
R2
120R
8
R20
270K
-
IC2
+
10
1K
100n
9
100n
C3
100K
R14
D3
8
R12
270K
IC3
+
-
10
9
R6
100K
7
IC2
+
-
6
5
R3
120R
R4
3K 6
C1
1uF
+
R29
4K 7
7
-
IC1
+
5
6
1u
C7
R42
4K 7
+7. 5v
0v 0v
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
BY AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
NO DECIMAL PLACE ± 1mm
TWO DECIMAL PLACES ± 0.1mm
ONE DECIMAL PLACE ± 0.3mm
TOLERANCES SCALE
APPD
DATE
RB RB
MR B 11/ 8/ 93
UNLESS OTHERWISE STATED
ALL DIMENSIONS ARE IN mm
DRAWN
CHKD
BYDATEDESCRIPTIONNo
ISSUE
C R 0508 14/ 1 / 9 4 MR B
PRODUCTION ISS UE 11/9/93 MRB
PRODUCTION ISS UE 29/8/00 MNR
1
2
2A
IC1 , IC2 & IC3 = LM324AM
ALL DIODES = LL4148 UNLESS MARKED OTHERWISE
1 2 3 4 5 6 7 8 9 101112 13 1415 16
D1
1. 23v
B
C
D
E
F
G
H
I
SR12D
J
K
L
M
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
37 of 52
Page 38
5.7.5 Generic Wall Enclosure Alarm Wiring Sketch
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
38 of 52
Page 39
5.8 DC/DC Converter, 24V in, 12V 8A out (13-003011)
5.8.1 Description
The DC/DC converter fitted is an AFL assembled, high power PCB unit with an 8 amp @
12V output capability. The circuit is basically an O.E.M semiconductor regulator (one side
of which has a heatsink mounting plate, that is usually bolted to the casing/back panel of a
Cell Enhancer) and smoothing components built onto a printed circuit board with screw
block terminations.
Note: no circuit diagram of the O.E.M. regulator is available. This unit should not be
repaired, only replaced.
5.8.2 Technical Specification
PARAMETER SPECIFICATION
Input Voltage Range: 18-28V DC
Output Voltage: 12V±0.5V
Max. Current Load: 8.0Amps
operation: -10°C to +55°CTemperature
Range:
storage: -30°C to +70°C
Size(PCB): 190 x 63mm
Weight (Loaded PCB): 291gm
5.8.3 Photo of Regulator PCB (regulator heatsink side)
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
39 of 52
Page 40
5.9 Channel Control & Channel Selective Modules (17-002101 & 17-009127)
5.9.1 Channel Selective Module Description
The channel selectivity module is employed when the Cell Enhancer requirement dictates
that very narrow bandwidths (single operating channels), must be selected from within the
operating passband. One channel selectivity module is required for each channel.
The Channel Selectivity Module is an Up/Down frequency converter that mixes the incoming
channel frequency with a synthesised local oscillator, so that it is down-converted to an
Intermediate Frequency (IF) in the upper HF range. An eight pole crystal filter in the IF
amplifier provides the required selectivity to define the operating passband of the Cell
Enhancer to a single PMR channel. The same local oscillator then converts the selected IF
signal back to the channel frequency.
Selectivity is obtained from a fixed bandwidth block filter operating at an intermediate
frequency (IF) in the low VHF range. This filter may be internal to the channel selectivity
module (Crystal or SAW filter) or an externally mounted bandpass filter, (LC or Helical
Resonator). Various IF bandwidths can therefore be accommodated. A synthesized Local
Oscillator is employed in conjunction with high performance frequency mixers, to translate
between the signal frequency and IF.
The operating frequency of each channel selectivity module is set by the programming of
channel selectivity module frequencies and is achieved digitally, via hard wired links, banks
of DIP switches, or via an onboard RS232 control module, providing the ability to remotely
set channel frequencies.
Automatic Level Control (ALC) is provided within each channel selectivity module such that
the output level is held constant for high level input signals. This feature prevents saturation
of the output mixer and of the associated amplifiers.
Alarms within the module inhibit the channel if the synthesised frequency is not locked. The
synthesiser will not usually go out of lock unless a frequency far out of band is programmed.
The channel selectivity module is extremely complex and, with the exception of channel
frequency programming within the design bandwidth, it cannot be adjusted or repaired
without extensive laboratory facilities and the necessary specialised personnel. If a fault is
suspected with any channel selectivity module it should be tested by substitution and the
complete, suspect module should then be returned to AFL for investigation.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
40 of 52
Page 41
5.9.2 Drg. Nō. 17-003080, Generic Channel Module Block Diagram
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
41 of 52
Page 42
5.9.3 Channel Control Module Description
The control module consists of a bank of four, in-line data switches each of which control
one channel module frequency setting. One controller unit can therefore control four
channel modules. The following list shows the frequencies available for each switch
setting.
5.9.4 Channel Controller Frequencies
IDC PIN 25-way Connector Function
1 13 Freq. bit 1 (12.5kHz)
2 25 Freq. bit 2 (25kHz)
3 12 Freq. bit 3 (50kHz)
4 24 Freq. bit 4 (100kHz)
5 11 Freq. bit 5 (200kHz)
6 23 Freq. bit 6 (400kHz)
7 10 Freq. bit 7 (800kHz)
8 22 Freq. bit 8 (1.6MHz)
9 9 Freq. bit 9 (3.2MHz)
10 21 Freq. bit 10 (6.4MHz)
11 8 Freq. bit 11 (12.8MHz)
12 20 Freq. bit 12 (25.6MHz)
13 7 Freq. bit 13 (51.2MHz)
14 19 Freq. bit 14 (102.4MHz)
15 6 Freq. bit 15 (204.8MHz)
16 18 Freq. bit 16 (409.6MHz)
17 5 Module alarm
18 17 Gain bit 1
19 4 Gain bit 2
20 16 Gain bit 3
21 3 Gain bit 4
22 15 +5V
23 2 0V
24 14 Switched 12V
25 1 0V
26 --- ---
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
42 of 52
Page 43
5.9.5 Channel Frequency Control Switch Table
Downlink
Frequencies
(MHz)
DIP Switch Setting Uplink
Frequencies
(MHz)
DIP Switch Setting
857.7625 1,2,3,4,6,8,10,16 812.7625 2,3,5,7,10,16
859.9375 2,3,9,10,16 814.9375 1,3,4,6,8,10,16
859.7625 1,2,3,4,5,6,7,810,16 814.7625 2,3,6,8,10,16
857.9375 2,3,5,6,8,10,16 812.9375 1,3,4,5,7,10,16
858.2375 2,7,8,10,16 8132375 1,4,6,7,10,16
860.4375 2,4,5,9,10,16 815.4375 1,7,8,10,16
859.4375 2,5,6,7,8,10,16 814.4375 1,4,5,8,10,16
858.7625 1,2,3,5,78,10,16 813.7625 2,3,4,5,6,7,10,16
5.10 24V Single Relay Board (80-008902)
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.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
43 of 52
Page 44
5.11 24V 400W Flat-Pack Power Supply (96-300011)
5.11.1 Description
The power supply unit is a switched-mode type capable of supplying 24V DC at 16.0Amps
continuously. Equipment of this type typically requires approximately 10.0 Amps at 24V
DC, so the PSU will be used conservatively ensuring a long operational lifetime.
No routine maintenance of the PSU is required. If a fault is suspected, then the output
voltage from the power supply may be measured on its output terminals. This is typically set
to 24.5V.
All the PSU’s used in AFL Cell Enhancers are capable of operation from either 110 or 220V
nominal AC supplies. The line voltage is sensed automatically, so no adjustment or link
setting is needed by the operator. No drawings of the PSU are available.
5.11.2 Technical Specification
AC Input Supply:
Voltage: 110 or 220V nominal - 90 to 132 or 180 to
264V (single phase, absolute limits)
Frequency: 47 to 63Hz
DC Output Supply:
Voltage: 24V DC (nominal), 22 to 26V
(absolute limits)
Current: 16.0A
Temperature
range:
operational:
storage:
-10ΒC to +55ΒC
-40ΒC to +70ΒC
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
44 of 52
Page 45
6. INSTALLATION
6.1 Initial Installation Record
When this equipment is initially commissioned, please use the equipment set-up record sheet
in Appendix A. This will help both the installation personnel and AFL should these figures
be needed for future reference or diagnosis.
6.2 General
The size and weight of the wall unit means that it represent a significant health hazard unless
it is mechanically installed in the correct manner. In the interests of safety this should be
done before any electrical or RF connections are made.
It is important in determining the location of the wall units that space is allowed for access
to the front and underneath of the equipment. To enable maintenance to be carried out, the
door must be able to fully open. The location must be served with a duct to allow the entry
of cables into the unit.
6.3 Electrical Connections
The mains power supply and the alarms are connected through an IP65 connector which
should need no further attention once connected. It is recommended that the AC power
connection is approved by a qualified electrician, who must satisfy himself that the supply
will be the correct voltage and of sufficient capacity.
All electrical and RF connection should be completed and checked prior to power being
applied for the first time.
6.4 RF Connections
All RF connections are made to the cable termination, located on the right-hand side of the
wall enclosure. Care must be taken to ensure that the correct connections are made with
particular attention made to the base station TX/RX ports. In the event that the base
transmitter is connected to the RX output of the unit, damage to the equipment may be done
if the base station transmitter is then keyed. If the environment where the equipment is
installed is deemed to be ‘wet’ i.e. water seepage through roofs or walls, then suitable
methods to seal the RF N type connectors should be used, for example self amalgamating
sealant tape.
Ensure that connections are kept clean and are fully tightened.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
45 of 52
Page 46
6.5 Commissioning
Once all connections are made the equipment is ready for commissioning.
To commission the system the test equipment detailed in section 7.2 will be required.
Using the system diagrams and the end-to-end test specification, the equipment should be
tested to ensure correct operation. Typical RF levels that are not listed in the end-to-end
specification, such as input levels are detailed in the whole system diagram in section 4.
On initial power up the system alarm indicators on the door of the equipment should be
checked. A red LED illuminated indicates a fault and that particular module must be
investigated before proceeding with the commissioning. A green LED illuminates, to
indicate that the power supply is connected and valid.
In the event that any part of the system does not function correctly as expected, check all
connections to ensure that they are to the correct port, that the interconnecting cables are not
faulty and that they are tightened. The majority of commissioning difficulties arise from
problems with the interconnecting cables and connectors.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
46 of 52
Page 47
7. MAINTENANCE
7.1 General Procedures
7.1.1 Fault Finding
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 within
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 walkie-talkie, mobile telephone 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 (optional) 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 digital RS232 Coverage Enhancement
Management System, if fitted), or locally with the front door LED’s. The green LED on the
front door should be illuminated, while the red alarm indicator should be off.
If an Alarm is on, then that individual module must be removed and tested against the
original test specification.
The individual amplifier units have a green LED showing through a hole in their piggy-back
alarm board (or directly through a hole in the amplifier lid), 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 and amplifier specification 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 logical manner to confirm correct operation.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
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Page 48
7.1.2 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.
7.1.3 Uplink
Testing the uplink involves a similar procedure to the downlink except that the frequencies
used are those transmitted by the mobile equipment.
7.1.4 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, tuned cavities
or 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. If spare parts need to be ordered from AFL, be sure to quote the serial number of the
Cell Enhancer/Repeater and the serial number [and frequencies] of the module(s) to be
replaced.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
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48 of 52
Page 49
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.
7.1.6 Service Support
Advice and assistance with maintaining and servicing this system are available by contacting
Aerial Facilities Ltd.
7.2 Tools & Test Equipment
The minimum tools and test equipment needed to successfully service this AFL product are
as follows:-
Spectrum analyser: 100kHz to 2GHz (Dynamic range = 90dB).
Signal Generator: 30MHz to 2GHz (-120dBm to 0dBm o/p level).
Attenuator: 20dB, 10W, DC-2GHz, (N male – N female).
Test Antenna: Yagi or dipole for operating frequency.
Digital multi-meter: Universal Volt-Ohm-Amp meter.
Test cable x 2: N male – N male, 2M long RG214.
Test cable x 2: SMA male – N male, 1m long RG223.
Hand tools: Philips #1&2 tip screwdriver.
3mm flat bladed screwdriver.
SMA spanner and torque setter.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
49 of 52
Page 50
7.3 Care of Modules
7.3.1 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 rules should be followed to remove a module:
1 Remove power to the unit
2 Remove all visible connectors (RF, DC & alarm)
3 Release module retaining screws.
4 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):
1 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.
2 Reconnect all connectors, RF, alarm, power etc.,(concealed connectors may have to be
connected first).
3 Replace retaining screws (if any).
4 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.
H/book Number:-60-056100HBKM
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
Issue No:-1
Date:-21/10/2003
Page:-
50 of 52
Page 51
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
1 Disconnect the mains power supply and disconnect the 24V dc supply connector for the
LPA.
2 Disconnect the RF input and output cables from the LPA.
3 Disconnect the alarm connector.
4 Remove the alarm monitoring wires from (D type connector) pins 9 and 10.
5 Remove the LPA module by removing the four retaining screws, replace with a new
LPA module and secure it with the screws.
6 Connect the RF cables to the LPA input and output connectors. Reconnect the wires to
the alarm board connector pins 9 and 10.
7 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 antistatic 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.
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
H/book Number:-60-056100HBKM
Issue No:-1
Date:-21/10/2003
Page:-
51 of 52
Page 52
APPENDIX A INITIAL EQUIPMENT SET-UP CALCULATIONS
GENERAL INFORMATION
Site Name: Client Name:
Date: AFL Equip. Model Nō.
ANTENNA SYSTEMS
Model Gain Azimuth Comments
A - Service Antenna
B – Donor Antenna
Type Loss Length Comments
C – Service Feeder
D – Donor Feeder
INITIAL PARAMETERS
E – CE Output Power
F – Antenna Isolation
G – Input signal level from donor BTS
Operating Voltage V
DOWNLINK CALCULATIONS
Parameter Comments Value
Input signal level (G)
CE max. o/p power (E)
Gain setting
Isolation required (Gain + 10dB) dB
Service antenna gain (A)
Service antenna feeder loss (C)
Effective radiated power (ERP)
Attenuator setting CE gain-gain setting dB
E - G
E+A-C
dBm
dB
dBm
dBm
dBm
dB
dB
dB
dBm
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 Value
Input signal level dBm
CE max. o/p power (E)
Gain setting dB
Required isolation dB
Donor antenna gain (B)
Donor antenna feeder loss (D)
Effective radiated power (ERP)
Attenuator setting (CE gain-gain setting) dB
E+B-D
dBm
dB
dB
dBm
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
H/book Number:-60-056100HBKM
Issue No:-1
Date:-21/10/2003
Page:-
52 of 52
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