PBE Europe as Axell Wireless 50-0606SERIES UHF Signal Extender User Manual RECEIVER MULTICOUPLER

Axell Wireless UHF Signal Extender RECEIVER MULTICOUPLER

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5 Channel, Channelised Cell Enhancer
Maintenance Handbook
For
AFL Works Order Nō.:Q108745
Includes AFL product part Nō’s.:
50-060602
Downlink Amplifier
50-060603
Uplink Amplifier
50-060604
Power Supply
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-1 of 54
Table of Contents
AMENDMENT LIST RECORD SHEET ................................................................................................. 4
INTRODUCTION ....................................................................................................................................... 5
Scope...........................................................................................................................................................................5
Purpose.......................................................................................................................................................................5
Glossary of Terms .....................................................................................................................................................6
Key to AFL RF Module Drawing Symbols .............................................................................................................7
1.
1.1
1.2
1.3
1.4
1.5
2.
3.
SAFETY CONSIDERATIONS ....................................................................................................... 8
Earthing of Equipment ................................................................................................................................8
Electric Shock Hazard .................................................................................................................................8
RF Radiation Hazard...................................................................................................................................8
Chemical Hazard..........................................................................................................................................9
Emergency Contact Numbers .....................................................................................................................9
OVERVIEW/SYSTEM DESCRIPTION ..................................................................................... 10
SPECIFICATION .......................................................................................................................... 11
3.1
5 Channel Channelised Cell Enhancer 50-060601 Parts Lists ...............................................................11
3.1.1
Downlink Channelised CE 50-060602 Parts List.....................................................................................11
3.1.2
Uplink Channelised CE 50-060603 Parts List .........................................................................................12
3.1.3
Power Supply Shelf 50-060604 Parts List ...............................................................................................13
3.2
Technical Specification ..............................................................................................................................14
3.3
Mechanical Specification ...........................................................................................................................15
4.
4.1
4.2
4.3
5.
SYSTEM DRAWINGS .................................................................................................................. 16
Drg. Nō. 50-060682, Downlink Amplifier Shelf System Diagram..........................................................16
Drg. Nō. 50-060683, Uplink Amplifier Shelf System Diagram...............................................................17
Drg. Nō. 50-060684, Power Supply Shelf System Diagram ....................................................................18
SUB-UNIT MODULES .................................................................................................................. 19
5.1
Downlink Channelised Cell Enhancer 60-060602 (5U chassis) ..............................................................19
5.1.1
Bandpass Filters (02-010701) ..................................................................................................................19
5.1.1.1 Description .......................................................................................................................................19
5.1.1.2 Technical Specification ....................................................................................................................19
5.1.2
UHF 3dB Splitter (05-002603) ................................................................................................................20
5.1.2.1 Description .......................................................................................................................................20
5.1.2.2 Technical Specification ....................................................................................................................20
5.1.3
3dB UHF Splitter (05-002603) ................................................................................................................21
5.1.3.1 Description .......................................................................................................................................21
5.1.3.2 Technical Specification ....................................................................................................................21
5.1.4
¼Watt 0- -30dB Switched Attenuator (10-000701).................................................................................21
5.1.4.1 General Application .........................................................................................................................21
5.1.4.2 Switched Attenuators........................................................................................................................21
5.1.5
Low Noise Amplifiers (11-007302 & 11-007402) ..................................................................................22
5.1.5.1 Description .......................................................................................................................................22
5.1.5.2 Technical Specification, (11-007302) ..............................................................................................22
5.1.5.3 Technical Specification (11-007402) ...............................................................................................22
5.1.5.3 Drg. Nō. 11-007302, LNA Assembly With Alarm Relay ..................................................................23
5.1.5.4 Drg. Nō. 11-007370, LNA RF Circuit Diagram...............................................................................24
5.1.5.5 Drg. Nō. 11-007371, LNA DC Wiring Diagram ..............................................................................25
5.1.5.6 Drg. Nō. 11-003971, LNA DC Circuit Diagram..............................................................................26
5.1.6
10Watt Power Amplifier (12-001901) .....................................................................................................27
5.1.6.1 Description .......................................................................................................................................27
5.1.6.2 Technical Specification ....................................................................................................................27
5.1.6.3 Drg. Nō. 12-001901, 10W PA PCB Sub-Assembly ..........................................................................28
5.1.6.4 Drg. Nō. 12-001970, 10W PA Circuit Diagram ..............................................................................29
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-2 of 54
5.1.6.5 Drg. Nō. 80-008450, PA to Alarm Board DC Wiring Details .........................................................30
5.1.7
3 Stage Amplifier Alarm Boards (12-002201).........................................................................................31
5.1.7.1 Description .......................................................................................................................................31
5.1.7.2 Technical Specification ....................................................................................................................32
5.1.7.3 Drg. Nō. 12-002201, 3 Stage Alarm Board Assembly Drawing & Parts List..................................33
5.1.7.4 Drg. Nō. 12-002270, 3 Stage Alarm Board Circuit Diagram..........................................................34
5.1.7.5 Generic Rack Shelf Enclosure Alarm Wiring Sketch .......................................................................35
5.1.8
Dual DC/DC Converter (13-001803).......................................................................................................37
5.1.8.1 Description .......................................................................................................................................37
5.1.8.2 Technical Specification ....................................................................................................................37
5.1.8.3 Drg. Nō. 13-001803, Dual DC/DC Converter Assembly Drawing..................................................38
5.1.8.4 Drg. Nō. 13-001872, Dual DC/DC Converter Circuit Diagram (12V/12V)....................................39
5.1.9
Channel Selective Module (17-003012) ..................................................................................................40
5.1.9.1 Description .......................................................................................................................................40
5.1.9.2 Drg. Nō. 17-003080, Generic Channel Module Block Diagram .....................................................41
5.1.10
24V Relay Board (20-001602).............................................................................................................42
5.1.10.1
Description ...................................................................................................................................42
5.1.10.2
Drg. Nō. 20-001602, 24V Relay Board Assembly Drawing.........................................................43
5.1.10.3
Drg. Nō. 20-001671, Relay Board Circuit Diagram....................................................................44
5.2
Uplink Channelised Cell Enhancer 50-060603 (5U chassis) ...................................................................45
5.2.1
DC Tap Module (21-001701)...................................................................................................................45
5.7.1
Description ...............................................................................................................................................45
5.3
Power Supply Shelf 50-060604 (4U chassis).............................................................................................46
5.3.1
24V 410W Flat-Pack Power Supply (96-300054) ...................................................................................46
5.3.1.1 Description .......................................................................................................................................46
5.3.1.2 Technical Specification ....................................................................................................................46
5.3.2
48V/8A DC Power Supply Module (96-300056) ....................................................................................47
5.3.2.1 Description .......................................................................................................................................47
5.3.2.2 Technical Specification ....................................................................................................................47
6.
6.1
7.
INSTALLATION............................................................................................................................ 48
Initial Installation Record .........................................................................................................................48
MAINTENANCE............................................................................................................................ 49
7.1
General Procedures....................................................................................................................................49
7.1.1
Basic Fault Finding ..................................................................................................................................49
7.1.2
Downlink..................................................................................................................................................50
7.1.3
Uplink.......................................................................................................................................................50
7.1.4
Fault repair ...............................................................................................................................................50
7.1.5
Checking service ......................................................................................................................................51
7.1.6
Service Support ........................................................................................................................................51
7.2
Tools & Test Equipment............................................................................................................................51
7.3
Care of Modules .........................................................................................................................................52
7.3.1
General Comments ...................................................................................................................................52
7.3.2
Module Removal (LNA’s, general procedure): .......................................................................................52
7.3.3
Module Replacement (general): ...............................................................................................................52
7.3.4
Power Amplifiers .....................................................................................................................................52
7.3.5
Low Power Amplifier Replacement.........................................................................................................53
7.3.6
Module Transportation:............................................................................................................................53
APPENDIX A
INITIAL EQUIPMENT SET-UP CALCULATIONS............................................... 54
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-3 of 54
AMENDMENT LIST RECORD SHEET
Issue
Nō.
Date
09/07/2003
Incorporated
by
CMH
Page No.’s
Amended
Reason for new issue
1st Issue
Document Ref:-50-060601HBKM
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-4 of 54
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.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-5 of 54
Glossary of Terms
Repeater or
Cell Enhancer
Band Selective Repeater
Channel Selective
Repeater
BTS
C/NR
Downlink (D.L.)
Uplink (U.L.)
EMC
GND
DC
AC
ID
OIP3
LED
M.S.
N/A
N/C
NF
RF
Rx
Tx
S/N
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, remotely set by computer, or on-site programmable.
Base Transceiver Station
Carrier-to-Noise Ratio
RF signals transmitted from the BTS and to the MS
RF signals transmitted from the MS to the BTS
Electromagnetic Compatibility
Ground
Direct Current
Alternating Current
Identification Number
Output Third Order Intercept Point = RFout +(C/I)/2
Light Emitting Diode
Mobile Station
Not Applicable
No Connection
Noise Figure
Radio Frequency
Receiver
Transmitter
Serial Number
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-6 of 54
Key to AFL RF Module Drawing Symbols
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-7 of 54
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.
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.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-8 of 54
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
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-9 of 54
2.
OVERVIEW/SYSTEM DESCRIPTION
The AFL Channel Selective Cell Enhancer is a 2-way on-band repeater. Various models are
available to cover frequency bands from 50MHz to 3000MHz. Its main sphere of
applications is in urban areas where the topology is such that shadows occur in the
propagation pattern (for example within large buildings, conference centres and tunnels,
etc.,)
The Channel Selective Cell Enhancer is a 2-port device for direct connection to two
antennas, usually a highly directional Yagi or similar aligned towards the base (donor) site
and an omni-directional antenna to cover the mobiles. The frequency bands that are passed
by the Cell Enhancer are set as per the specific customer requirements.
AFL manufacture a wide range of Cell Enhancers, configured for each customer's specific
requirements. Two basic physical variants are available, a rack mounted version to fit in a
standard 19" rack and an environmentally sealed wall mounted version which requires no
further enclosure.
The rack-mounted version is usually supplied in 3 units, a power supply unit and 2 RF units
(one containing each path). Each shelf/tray unit containing active modules has a ‘D.C. on’
indicator on the front panel and the PSU also has an ‘A.C. on’ indicator.
The wall-mounted version is supplied in a single environmentally-protected case. Handles
are provided for carrying the unit and the door is fitted with locks. A supply isolator switch
is fitted inside the unit and there are ‘.DC. on’ and ‘Alarm on’ indicators on the outside of
the door.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-10 of 54
3.
SPECIFICATION
5 Channel Channelised Cell Enhancer 50-060601 Parts Lists
3.1
AFL Part Nō.
50-060602
50-060603
50-060604
Description
D/L CCE 80dB 10W Q108330
U/L CCE 80dB 10W Q108330
PSU Q108330
Qty.
Modules described in the text are shown as highlighted in the parts list in the quantity
column. All fuses used in this equipment must be replaced with identical types as
proscribed in the description column of the particular unit’s parts list.
3.1.1
Downlink Channelised CE 50-060602 Parts List
02-010701
05-002603
05-003803
10-000701
11-007302
11-007402
12-001901
12-002201
12-002220
13-001803
17-003012
19-000826
20-001602
80-024420
80-024421
80-043320
91-020004
91-500001
91-510003
91-600001
91-620001
91-620006
91-700017
92-340001
96-110001
96-110013
96-500005
96-600002
96-600003
97-400006
5P 380MHz(V.B/W)X CPLING SMA POSTS
UHF 3dB SPLITTER SMA
3 WAY SPLITTER, UHF, ZINGER
1/4W0-30dB SWITCHED ATTENUATOR
LNA. 380-500MHz 20dB (C/W RELAY) GA
LNA. 380-500MHz 30dB (C/W RELAY) GA
PWR AMP.450MHz 20W GEN.ASSY
3 STAGE AMPLIFIER ALARM BOARD
3 STAGE ALARM PCB COVER
DUAL DC/DC CONVERTER 24V-12V 1A
CHAN MOD 450MHz, 15kHz (8p) BW
2U,3U,4U 19" UNIT 400 DEEP LID
24V RELAY BOARD
5U CHASSIS FRONT PANEL
5U CHASSIS 400mm DEEP
HEATSINK
N JACK PANEL UT-141
POWER PLG 3 PIN PNL.MOUNT NC-X
3 PIN R.ANGLE FREE SOC.NC-X.
'D'TYPE 9 WAY PLUG S/B TERM
'D' 25 WAY SOCKET S/B TERM
'D' 25 WAY CONNECTOR SHELL
ICD 15 WAY 0.1' CONNECTOR
M3 x 8mm 'D'CONNECTOR SCREW LOCK
FUSE HOLDER 20 x 5mm6.3A
T 3.15 A ANTI SURGE FUSE 20mm
DC INPUT FILTERS
INSULATING BOOT SMALL
INSULATING BOOT D.C.
5U HANDLE [ALLOY]
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-11 of 54
3.1.2
Uplink Channelised CE 50-060603 Parts List
AFL Part Nō.
02-010701
05-002603
05-003803
10-000701
11-007302
11-007402
12-001901
12-002201
12-002220
13-001803
17-003012
19-000826
20-001602
21-001701
80-024420
80-024421
80-043320
91-020004
91-500001
91-510003
91-600001
91-620001
91-620006
91-700017
92-340001
96-110001
96-110013
96-500005
96-600002
96-600003
97-400006
Description
5P 380MHz(V.B/W)X CPLING SMA POSTS
UHF 3dB SPLITTER SMA
3 WAY SPLITTER, UHF, ZINGER
1/4W0-30dB SWITCHED ATTENUATOR
LNA. 380-500MHz 20dB (C/W RELAY) GA
LNA. 380-500MHz 30dB (C/W RELAY) GA
PWR AMP.450MHz 20W GEN.ASSY
3 STAGE AMPLIFIER ALARM BOARD
3 STAGE ALARM PCB COVER
DUAL DC/DC CONVERTER 24V-12V 1A
CHAN MOD 450MHz, 15kHz (8p) BW
2U,3U,4U 19" UNIT 400 DEEP LID
24V RELAY BOARD
DC TAP PT FREEPORT
5U CHASSIS FRONT PANEL
5U CHASSIS 400mm DEEP
HEATSINK
N JACK PANEL UT-141
POWER PLG 3 PIN PNL.MOUNT NC-X
3 PIN R.ANGLE FREE SOC.NC-X.
'D'TYPE 9 WAY PLUG S/B TERM
'D' 25 WAY SOCKET S/B TERM
'D' 25 WAY CONNECTOR SHELL
ICD 15 WAY 0.1' CONNECTOR
M3 x 8mm 'D'CONNECTOR SCREW LOCK
FUSE HOLDER 20 x 5mm6.3A
T 3.15 A ANTI SURGE FUSE 20mm
DC INPUT FILTERS
INSULATING BOOT SMALL
INSULATING BOOT D.C.
5U HANDLE [ALLOY]
Qty.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-12 of 54
3.1.3
Power Supply Shelf 50-060604 Parts List
19-000826
19-001021
19-001024
20-001602
80-064120
91-500025
91-510003
91-510004
91-520001
91-520004
91-600001
92-340001
93-560001
96-300054
96-300056
96-700034
96-700035
96-900018
97-400002
2U,3U,4U 19" UNIT 400 DEEP LID
4U 19" UNIT 400 DEEP CHASSIS + BKT
4U 19" UNIT FRONT PANEL FAB
24V RELAY BOARD
HEATSINK 4U FLATPAC 16A 10W
3 PIN RIGHT ANGLE FREE PLUG NC-X
3 PIN R.ANGLE FREE SOC.NC-X.
3 PIN PNL.MOUNT SOCKET NC-X
PWR MAINS INL FIXED/SOLD.TERMS
POWER MAINS INL.FREE R/ANGLE
'D'TYPE 9 WAY PLUG S/B TERM
M3 x 8mm 'D'CONNECTOR SCREW LOCK
VARISTOR V275LA20A
24V 17A PSU 400W (XP BCC)
48V 6A PSU DIN RAIL (TRACO)
LED RED 5mm IP67 INTEGRAL RES. 24V
LED GREEN 5mm IP67 INTEGRAL RES 24V
AC TRIP SWITCH (5 AMP M.C.B.)
HANDLE TYPE H6803 4U.[ALLOY]
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-13 of 54
3.2
Technical Specification
PARAMETER
SPECIFICATION
Downlink Frequency Range: 453.30-453.75MHz
Uplink Frequency Range: 458.30-458.75MHz
Channel Bandwidth selectivity: 12.5kHz adjacent channel >20dB
25kHz adjacent channel >80dB
Number of Channels: 5
Number of ports: 2
RF Connectors: N type, female
Impedance: 50Ω
VSWR: Better than 1.5:1
Sensitivity: 0.35 microvolts @ 12dB SINAD
Downlink Output Power:
10 Watts
Uplink Output Power:
Uplink TOI: 50dBm
Downlink TOI: 50dBm
RF level per carrier: >+23dBm
Passband ripple: <±1.5dB
Noise figure: <6dB (@max gain)
Gain: 96dB
Gain adjustment: 0-30dB (in 2dB steps)
In band spurious: Better than –36dBm
Spurious up to 3GHz: Better than –90dBc
Input AC Supply: 120V AC
Consumption: 150 Watts
Volt-free relay contacts
Alarms: Excessive VSWR
Forward power drop
MTBF: 80,000 Hrs.
Housing: 19” Rack mounted
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-14 of 54
3.3
Mechanical Specification
Height:
Width:
Depth:
Case Size:
operational:
storage:
Weight:
Humidity:
RF Connectors:
Environmental Protection:
Case:
Finish:
Heatsinks:
Handles:
Temperature Range:
Supply Cable:
Eurorack Shelves(1U=44.5mm)
19"
<500mm
(excluding heatsinks, connectors, handles
and feet)
-10°C to +55°C
-40°C to +70°C
<30kg* (approximately)
5 – 95% non-condensing
N type female
IP54
Alocrom
Matt black
Alocrom
Unit supplied with suitable supply input
leads with connector and specified length
of cable (where appropriate)
Note: Individual shelf weights unspecified.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-15 of 54
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
CHKD
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-16 of 54
APPD
LNA
31dB GAIN
11-007402
dB
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
TOLERANCES
SCALE
ATTENUATOR
0-30dB
10-000701
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
BANDPASS FILTER
02-010701
458-459MHz
BANDPASS FILTER
02-010701
453-454MHz
30/06/03
DATE
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
MNR
DRAWN
BASE
LNA
31dB GAIN
11-007302
SPLITTER
05-002603
CHANNEL MODULE
5 x 17-003012
GAIN 20dB
ALC -15dB
FREQUENCY PROGRAMMING DATA
B/W=15kHz
FREQUENCY PROGRAMMING DATA
B/W=15kHz
FREQUENCY PROGRAMMING DATA
B/W=15kHz
FREQUENCY PROGRAMMING DATA
B/W=15kHz
Tel : 01494 777000
Fax : 01494 777002
FREQUENCY PROGRAMMING DATA
B/W=15kHz
Aerial Facilities Limited
England
SPLITTER
05-003803
SPLITTER
05-003803
1A
No
LNA
21dB GAIN
11-007302
SYSTEM DIAGRAM
DRAWING.No
DATE
30/06/03
PA
28dB GAIN
12-001901
50-060682
ISSUE
DESCRIPTION
PRODUCTION ISSUE
COMBINER
05-002603
DOWNLINK CCE 80dB 10W
CUSTOMER
TITLE
COMBINER
05-003803
COMBINER
05-003803
BY
MNR
4.
SYSTEM DRAWINGS
4.1
Drg. Nō. 50-060682, Downlink Amplifier Shelf System Diagram
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
CHKD
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-17 of 54
APPD
GD
30/06/03
DATE
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
SS
MNR
DRAWN
PA
28dB GAIN
12-001901
SPLITTER
05-003803
SPLITTER
05-003803
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
TOLERANCES
B/W=15kHz
453.600MHz
CHANNEL MODULE
5 x 17-003012
GAIN 20dB
ALC -15dB
FREQUENCY PROGRAMMING DATA
B/W=15kHz
453.750MHz
FREQUENCY PROGRAMMING DATA
B/W=15kHz
453.200MHz
FREQUENCY PROGRAMMING DATA
B/W=15kHz
453.500MHz
FREQUENCY PROGRAMMING DATA
SCALE
B/W=15kHz
453.300MHz
FREQUENCY PROGRAMMING DATA
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
SPLITTER
05-002603
LNA
21dB GAIN
11-007302
COMBINER
05-002603
LNA
31dB GAIN
11-007302
Tel : 01494 777000
Fax : 01494 777002
Aerial Facilities Limited
England
COMBINER
05-003803
COMBINER
05-003803
No
1A
LNA
31dB GAIN
11-007402
48V
DC
DATE
30/06/03
DC INJECTOR
21-001701
50-060683
ISSUE
DESCRIPTION
PRODUCTION ISSUE
BANDPASS FILTER
02-010701
453-454MHz
SYSTEM DIAGRAM
DRAWING.No
BANDPASS FILTER
02-010701
458-459MHz
UPLINK CCE 80dB 10W
CUSTOMER
TITLE
dB
ATTENUATOR
0-30dB
10-000701
BY
MNR
MOBILE
4.2
Drg. Nō. 50-060683, Uplink Amplifier Shelf System Diagram
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
CHKD
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-18 of 54
APPD
GD
30/06/03
DATE
110V AC
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
SS
MNR
DRAWN
3A
CB2
3A
CB1
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
TOLERANCES
SCALE
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
24V DC
110V AC
48V DC
PSU 96-300056
110V AC
PSU 96-300054
Tel : 01494 777000
Fax : 01494 777002
Aerial Facilities Limited
England
No
1A
2-
3+
2-
1+
2-
1+
ISSUE
DESCRIPTION
PRODUCTION ISSUE
48V DC TO 50-060603
FOR DC INJECTORS
24V DC TO 50-060603
24V DC TO 50-060602
DRAWING.No
SYSTEM DIAGRAM
50-060684
PSU FOR 50-060602 AND 50-060603
CUSTOMER
TITLE
DATE
30/06/03
BY
MNR
4.3
Drg. Nō. 50-060684, Power Supply Shelf System Diagram
5.
SUB-UNIT MODULES
Downlink Channelised Cell Enhancer 60-060602 (5U chassis)
5.1
5.1.1
Bandpass Filters (02-010701)
5.1.1.1
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.
No adjustments should be attempted without full network sweep analysis facilities to
monitor both insertion loss and VSWR simultaneously.
5.1.1.2
Technical Specification
PARAMETER
SPECIFICATION
Passband 453-454 MHz
Insertion Loss 1.9 dB typical
> 456 MHz
> 55 dB
Rejection
> 458-459 MHz > 60 dB
Power Rating 50 Watt
Impedance 50 ohm
VSWR Better than 1.2:1
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-19 of 54
5.1.2
UHF 3dB Splitter (05-002603)
5.1.2.1
Description
The 3dB 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.
5.1.2.2
Technical Specification
PARAMETER
Frequency Range:
Bandwidth:
Inputs:
Outputs:
Insertion Loss:
Isolation:
Return Loss (VSWR) – Input:
Return Loss (VSWR) – Output:
Impedance:
Power Rating – Splitter:
Power Rating – Combiner:
Connectors:
Size:
Weight:
SPECIFICATION
380 - 520 MHz
140 MHz
3.5 dB (typical)
>18 dB
Better than 1.3:1
Better than 1.3:1
50 ς
20 Watts
0.5 Watt
SMA female
54 x 44 x 21 mm (including connectors)
200 g
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-20 of 54
5.1.3
3dB UHF Splitter (05-002603)
5.1.3.1
Description
The 3dB 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.
5.1.3.2
Technical Specification
PARAMETER
SPECIFICATION
Frequency Range: 400-500 MHz
Power Rating: 5 Watts
Insertion Loss: 5.2dB Typical
VSWR: 1.2:1
Impedance: 50 Ohms
Connectors: SMA
Weight: <0.5Kgs
Mechanical: Drawing No. 07-003890
5.1.4
¼Watt 0- -30dB Switched Attenuator (10-000701)
5.1.4.1
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.
5.1.4.2
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.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-21 of 54
5.1.5
Low Noise Amplifiers (11-007302 & 11-007402)
5.1.5.1
Description
The low noise amplifiers used are double stage solid-state low-noise amplifiers. Class A
circuitry is used in the units to ensure excellent linearity 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 failure then the
entire amplifier should be replaced. The two amplifiers are very similar in construction,
the only difference is the biasing, which changes the gain figure, see tables below.
5.1.5.2
Technical Specification, (11-007302)
PARAMETER
Frequency range:
Bandwidth:
Gain:
1dB Compression Point:
3rd order intercept:
Input/Output return loss:
Noise figure:
Connectors:
Supply:
operational:
Temperature range:
storage:
Weight:
Size:
5.1.5.3
SPECIFICATION
380-500MHz
<140MHz
20-22dB
+23.5dB (typical)
+36dB (typical)
>20dB
<1.3dB
SMA female
200-230mA @ 24V DC
-10°C to +55°C
-30°C to +70°C
<300gms
90 x 55 x 30.2 (case only)
Technical Specification (11-007402)
PARAMETER
Frequency range:
Bandwidth:
Gain:
1dB Compression Point:
3rd order intercept:
Input/Output return loss:
Noise figure:
Connectors:
Supply:
operational:
Temperature range:
storage:
Weight:
Size:
SPECIFICATION
380-500MHz
<140MHz
30-32dB
+22dBm (typical)
+34-35dBm (typical)
>20dB
<1.3dB
SMA female
300-330mA @ 24V DC
-10°C to +55°C
-30°C to +70°C
<300gms
90 x 55 x 30.2 (case only)
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-22 of 54
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
11-007302
380-500MHz
20dB 10-24V DC
********
**/**/20**
DE V ICE S
0086
AFL
19
OUT
IN
34
IN 4 PLACES
see note 2
28
see note 2
31
CHKD
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-23 of 54
APPD
IB
9/7/02
DATE
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
CB
DBS
DRAWN
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
TOLERANCES
SCALE
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
1.5:1
2. LIDS,ITEMS 2 & 3 AND LABELS,ITEMS 31,34 & 35,TO BE FITTED ON TEST
OR
E LE C TR OS TA TI C
S E N S I TI V E
FOR H A ND LI N G
OB S E R V E P RE C A U TI ON S
1. SOLDER JOINTS TO BE MADE USING
REF.
FREQ.
GAIN
S/N
DATE
AFL
see note 2
ATTENTION
35
22
21
CPL1
W7
C2
C1
RL1
England
W2
L5 R4
TR1 +
C8 R16
27
L3
R2 C9
L1
W5
30
Aerial Facilities Ltd
C5
C4
20
C21 W6
15
26
IN 2 PLACES
R1
R19
RF OUT
R39
Tel : 01494 777000
Fax : 01494 777002
24
CON1
REG3
J1
J3 J2
AFL
COMPONENTS TO BE ADDED TO 11-003912,ITEM 15,DC PCB SUB-ASSEMBLY
LABEL DETAILS - SCALE 1:1
J31
J32
C12
27
No
1A
10
25
24
33
ISSUE
DESCRIPTION
PRODUCTION ISSUE
17
DC PCB
25
32
LOW NOISE AMPLIFIER 380-500MHz
23
IN 3 PLACES
CUSTOMER
DRG.No
11-007302
(20dB) ASSEMBLY DRAWING (WITH RELAY)
TITLE
W1
16
R50 R49
R43 R44
DATE
9/7/02
RF PCB
BY
DBS
5.1.5.3
Drg. Nō. 11-007302, LNA Assembly With Alarm Relay
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
CHKD
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-24 of 54
APPD
IB
5/7/02
DATE
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
CB
DBS
DRAWN
RF INPUT
51R
R1
11303-3
CP L1
C4
1nF
C3
3.3pF
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
TOLERANCES
L4
330nH
Ø1.6x6 turns
SCALE
L2
CLY 2
TR2
CLY 2
1nF
TR1
Ø1. 6x6 t urns
L1
L3
330nH
L5
C5
C6
R6
10K
R3
100R
1nF
1nF
R7
560R
1nF
C13
1nF
C12
L6
C10
R4
560R
100nH
100nH
1nF
C9
10K
1nF
R5
R2
0R0
100R
W7
0R0
R19
C1
C7
3.3pF
RF OUTPUT
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
CP L2
11303-3
R8
51R
R9
R11
W2
0R0
W1
0R0
W5
0R0
Tel : 01494 777000
Fax : 01494 777002
Aerial Facilities Limited
England
HE A DE R P IN
J11
HE A DE R P IN
J12
HE A DE R P IN
J32
HE A DE R P IN
J31
0R0
W6
0R0
R10
CUSTOMER
TITLE
2A
No
1A
ISSUE
DESCRIPTION
PRODUCTION ISSUE
ECN2718
DRAWING.No
11-007370
(20dB) RF PCB CIRCUIT DIAGRAM
LOW NOISE AMPLIFIER 380-500MHz
ATTENUATOR GROUP
(Select values on Test)
DATE
5/7/02
19/9/02
BY
DBS
DBS
5.1.5.4
Drg. Nō. 11-007370, LNA RF Circuit Diagram
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
CHKD
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-25 of 54
APPD
IB
8/7/02
DATE
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
CB
DBS
DRAWN
RF
IN
-ve
5V 75mA
-ve
5V 75mA
DC INPUT
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
TOLERANCES
SCALE
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
RF PCB
FOR CIRCUIT DIAGRAM
SEE 11-007370
J11 - J12
J31 - J32
J12 2
J11 1
J32 2
J31 1
DC OUTPUT
Tel : 01494 777000
Fax : 01494 777002
Aerial Facilities Limited
England
DC PCB
+8V
ISSUE
DESCRIPTION
PRODUCTION ISSUE
9 CON1
8 CON1
7 CON1
5 CON1
4 CON1
3 CON1
2 CON1
DRAWING.No
RF
OUT
DATE
8/7/02
OC GOOD/0v BAD
TTL ALARM/0v GOOD
TTL VOLTAGE SET
BY
DBS
RELAY CONTACT GOOD
RELAY COMMON
RELAY CONTACT BAD
GROUND
10-24V DC I/P
9 WAY 'D'
PIN OUTS
CON1
11-007371
(20dB) RF SCHEMATIC DIAGRAM
LOW NOISE AMPLIFIER. 380-500MHz
CUSTOMER
TITLE
No
1A
FOR CIRCUIT DIAGRAM
SEE 11-003971
REG3
LM7808CT
5.1.5.5
Drg. Nō. 11-007371, LNA DC Wiring Diagram
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
CHKD
V _IN
J1
J5
J4
J3
J4
J5
J3
J1
P1
J2
>12V DC I/P
J2
C13
10u
1u
C4
ZD3
5.1V
10u
C14
C8
10u
0R
R28
C5
1u
IC3
IC2
100n
C11
100n
C17
I CL7660C
I CL7660C
100R
R38
C15
10u
C9
10u
10u
C16
10u
C10
1K
R52
1K
R47
C7
470p
C6
10u
R40
R39
C18
1u
LM337LM
RE G2
LM337LM
RE G1
C12
1u
R41
R50
R51
R44
R43
V R1
R42
P2
R49
R45
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-26 of 54
IB
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
APPD
24/09/01
DATE
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
TOLERANCES
SCALE
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
1. * IF APPLICABLE, VALUES WILL BE DETERMINED AT A HIGHER LEVEL BOM
2. CONNECTORS J1-5 TO BE FITTED AS NECESSARY
CON 1
CON 1
CB
DJL
DRAWN
V _OUT
100n
C19
R46
1K
R48
1K
470R
R56
R55
R54
R53
I C4:A
0R
R29
I C4:B
ZD1
1.23V
120R
R2
R1
1K 8
R3
C1
1u
100K
R5
100K
R4
12
13
IC1:D
LM324M
11
14
100K
R6
THIRD ANGLE PROJECTION
100K
LM324M
IC1: A
R57
Chesham(01494)778301
Fax (01494)778910
Aerial Facilities Limited
England
120R
R11
C2
100n
1K
R7
9 -
3K 6
R12
10
R9
1K
I C1: B
D1
LL4148
D2
LL4148
CUSTOMER
TITLE
LM324M
270K
R10
LM324M
I C1: C
270K
R8
10K
R32
D3
R23
DRAWING.No
CIRCUIT DIAGRAM
11-003971
ISSUE
DESCRIPTION
DC PCB FOR LNA's AND LPA's,
No
DATE
BY
DJL
TAS
24/9/01
26/11/01
CON 1
CON 1
CON 1
PROTOTYPE ISSUE
P4
CON 1
PRODUCTION ISSUE(ECN2359)
B CW71
TR3
P5
1A
CON 1
R58
1K
AA
RL1/1
4K 7
R25
R59
DJL
4K 7
10K
B CW71
TR2
R24
CON 1
DJL
P6
P8
R22
10K
P3
RL1
17/4/02
TR1
LL4148
ZD2
3V 3
R18
22K
25/7/02
56R
R27
560R
R19
TR5
B CW71
2K 2
R17
ECN2686
P7
4K 7
R21
10K
R20
2K 4
R15
TR4
B CW71
1K
R16
ECN2518
RL1/2
B CW71
TR8
4K 7
R36
C3
1U
3K
R14
TR6
FZT751
3A
4K 7
2A
R31
4K 7
B CW71
TR7
1K
R35
R33
10K
R34
LE D1
4K 7
R13
5.1.5.6
Drg. Nō. 11-003971, LNA DC Circuit Diagram
5.1.6
10Watt Power Amplifier (12-001901)
5.1.6.1
Description
The power amplifier fitted to this unit is a multi-stage, solid state class A power
amplifier. All the semi-conductor devices are very conservatively rated to ensure low
device junction temperatures and a long, trouble free working lifetime. The amplifier was
originally designed to have a 20W power output, but in this instance, the biasing is
changed to give the device a 10W rating.
The power amplifier should require no maintenance over its 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.
5.1.6.2
Technical Specification
PARAMETER
Frequency Range:
Bandwidth:
Maximum Output Power:
Gain:
3rd Order Intercept Point:
1dB Compression Point:
VSWR:
Connectors:
Supply:
operational
Temperature range:
storage:
Size:
Weight:
SPECIFICATION
400 - 500MHz (tuned to spec.)
20MHz (typical, tuneable)
>10W
28dB
<+51dBm
<+40dBm
better than 1.45:1
SMA female
2.5A @ 24V DC
-10°C to +55°C
-40°C to +70°C
276 x 78 x 40mm (case only)
1.5 kg (excluding heatsink)
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-27 of 54
Issue No:-1
Date:-04/07/2003
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-28 of 54
IS S UE
13/6/94
DATE
16/9/92
DE S CRIP TI ON
CR0521
PRODUCTION ISSUE
No
23/12/98
11
PRODUCTION ISSUE (CR0962)
2A
IN 3 PLACES
DBS
DJL
SEW
IN 2 POSNS
CHK D
TR 101
21
17/09/92
APPD
A LL DIME NS IONS A RE IN mm
UNLE S S OTHE RWIS E S TA TE D
DBS
DA TE
EACH SIDE
IN 4 POSNS
IN 2 POSNS
C 107
R 104
C 17
+ C 16
L5
FB 5
C 18
L105
FB 105
DE TA IL D
L104
C7
24
20
L4
R 105
NO DE CIMA L P LA CE ± 1mm
ONE DE CIMA L P LA CE ± 0. 3mm
TWO DE CI MAL P LACE S ± 0.1mm
TOLE RA NCE S
SCA LE
THIS IS A P ROP RIE TA RY DE S IGN OF A E RIA L FA CILITI E S LTD.
RE P RODUCTION OR US E OF THI S DE SI GN B Y OTHE RS I S
PE RMIS S IB LE ONLY I F EX P RE S S LY A UTHORIS E D I N WRITI NG
BY A ERI AL FA CI LI TI ES LTD.
TR 2
TR 102
R 103
C 116
C 20
R 108
R3
PLAN VIEW WITH LID REMOVED
C106
L103
C 15
L3
C6
12-1925-2
Issue 3
C105
R E G101
R E G1
C5
4 P0SNS
TRIM 2 TABS
TO SUIT PCB.
FIT WITH CHAMFERED
TAB IN DIRECTION
SHOWN -->
FB 102
L102
C 115
R 107
R102
C 114
R 106
15
L2
FB 2
A eri al Faci l i t i es
Li mi t ed
R2
C 14
TR1
C 104
L101
C4
FB 101
C 13
L1
FB 1
C 113
C110
C12
C 103
C 111
C 112
C 11
C 10
C3
12
C102
C 101
C1
C2
C OU P LE R 1
DRA WN
R 101
C120
C121
C122
C123
I N P UT
H/book Number:-50-060601HBKM
L6
1:1
24
24
RE G2
23
18
14
20
24
IN 2 POSNS
+ +
C 119
FIT WITH CHAMFERED
TAB IN DIRECTION
SHOWN -->
C 118
/ L106
R E G102
FB 106
FB 6
C 117
THIRD ANGLE PROJECTION
USED ON
C 108
C8
R1
OU TP U T
10
19
18
Fax (0494)764838
Little Chalfont(0494)763636
England
Aerial Facilities Ltd
C109
24V D C I N P U T
C9
2 P0SNS
C OU P LE R 2
23
11
CUS TOME R
TITLE
18
OR
18
IN 2 POSNS
DRG. No
GENERAL ASSEMBLY
STOCK REF :
12-001901
POWER AMPLIFIER,450MHz,20W
COMPLETE ALL SOLDERING USING ITEM
IN 2 PLACES
26
2A
IS S
ASS0130
5.1.6.3
Drg. Nō. 12-001901, 10W PA PCB Sub-Assembly
5.1.6.4
Drg. Nō. 12-001970, 10W PA Circuit Diagram
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-29 of 54
5.1.6.5
Drg. Nō. 80-008450, PA to Alarm Board DC Wiring Details
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-30 of 54
5.1.7
3 Stage Amplifier Alarm Boards (12-002201)
5.1.7.1
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)
2)
3)
Volt-free change over relay contacts.
Open collector NPN transistor pulls low on alarm.
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.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-31 of 54
5.1.7.2
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
Relay isolation: 1.5kV
Mechanical life: >2x107 operations
Relay approval: BT type 56
Connector details: 15-way 0.1" pitch
operational:
-10°C to +55°C
Temperature range:
storage:
-40°C to +70°C
74 x 56mm (3 stage)
PCB Size:
54 x 56mm (1 stage)
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-32 of 54
5.1.7.3
List
Drg. Nō. 12-002201, 3 Stage Alarm Board Assembly Drawing & Parts
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-33 of 54
5.1.7.4
Drg. Nō. 12-002270, 3 Stage Alarm Board Circuit Diagram
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-34 of 54
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Generic Rack Shelf Enclosure Alarm Wiring Sketch
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-35 of 54
D1
1.23v
S R12D
C1
1uF
R2
120R
R1
1K 8
I C3
IC2
IC1 , IC2 & IC3 = LM324A M
A LL DIODE S = LL4148 UNLE SS MARK E D OTHE RWIS E
R4
3K 6
R3
120R
HI
R6
100K
CON N
R5
100K
CON N
MONITOR 1
INP UT
R7
100K
LOW
IC3
11
R8
100K
C2
100n
R11
1K
VCC
+7. 5v
0v
10
I C3
R12
13
12
270K
R9
1K
+7. 5v
IC3
270K
R10
14
No
HI
R13
100K
IS S UE
D E S C R I P TI ON
CR0508
P RODUCTION I S S UE
P RODUCTION I S S UE
2A
4K 7
R42
D3
D2
C7
1u
R14
100K
MONITOR 2
I NP UT
LOW
R15
100K
D A TE
14/1/94
11/ 9/ 93
29/8/00
CON N
CON N
I C2
BY
MRB
MRB
MNR
RB
I C1
RB
11/ 8/ 93
APPD
D A TE
C3
100n
10
A LL D I ME N S I ON S A R E I N mm
U N LE S S OTH E R WI S E S TA TE D
CHK D
MRB
D R A WN
11
100K
R16
10
10
R20
IC2
270K
IC2
270K
13
12
R18
4K 7
R29
V CC
+7.5v
14
12
R30
2K2
D5
D4
11
N O D E C I MA L P LA C E ± 1mm
ON E D E C I MA L P LA C E ± 0. 3mm
TWO D E C I MA L P LA C E S ± 0. 1mm
TOLE R A N C E S
B Y A E R I A L FA C I LI TI E S LTD .
12
S C A LE
N.T.S
TH I S I S A P R OP R I E TA R Y D E S I GN OF A E R I A L FA C I LI TI E S LTD .
R E P R OD U C TI ON OR U S E OF TH I S D E S I GN B Y OTH E R S I S
P E R MI S S I B LE ON LY I F E X P R E S S LY A U TH OR I S E D I N WR I TI N G
R19
1K
R17
1K
11
R21
100K
HI
13
RL2/ 2
NOT US E D
B CW71
R22
100K
MONI TOR 3
INP UT
TR1
13
CON N
CON N
5.1.7.5
R23
100K
RE L
RL1
D8
+7.5v
I C1
LED1
14
Tel : 01494 777000
Fax : 01494 777002
Aerial Facilities Limited
England
LOW
14
11
15
C8
1. 0
R27
1K
RL1/2
BCW71
TR2
R25
1K
0v
R36
3K
V CC
10
13
12
R26
IC1
270K
R34
4K7
R33
10K
IC1
270K
R28
TR4
B CW71
R38
1K
R37
2K4
16
0v
1K
R35
CONN
CONN
CONN
B CW71
TR3
OP A MP
10
14
TR4
D7
D6
R40
LK2
D9
3v3
16
D R A WI N G N o
CIRCUIT DIAGRAM
15
0V
CONN
A LARM 0v
14
CONN
O/ C A LA RM
13
CONN
+5v TTL IN
12
CONN
12-002270
17
R41
22K
TTL A LA RM
11
CONN
A LA RM
CONTA CTS
2K 2
FZT751
BCW71
R39
560R
TR6
17
3 STAGE AMPLIFIER ALARM BOARD
C U S TOME R
TI TLE
R32
4K 7
R31
10K
R24
100K
C4
100n
15
LK 1
18
C6
100n
+8v TO +30v
7 CONN
18
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-36 of 54
5.1.8
Dual DC/DC Converter (13-001803)
5.1.8.1
Description
This unit is employed where it is necessary to derive two fixed voltage power supply rails
from some higher voltage. Typically it is used to derive 5, 8, 12 or 15V from a 24V input.
The circuit is based upon a pair of LM257 series variable voltage regulators (LM2576, 12
& 15V & LM2575, 5V), which are each capable of supplying an absolute maximum of
1.5A output current. Note that at full output current, the dissipation of the device must
remain within design limits, bearing in mind the voltage which is being dropped across it.
The maximum allowable dissipation will also depend on the efficiency of the heatsink on
which the device is mounted.
5.1.8.2
Technical Specification
PARAMETER
Operating Voltage:
Output Voltages:
Output Current:
Connections:
operational
Temperature range: :
storage:
PCB Size:
SPECIFICATION
21 – 27V DC
12.0V & 12.0V (typical)
1.0A (maximum per o/p)
Screw Terminal Block
-10ΒC to +55ΒC
-40ΒC to +70ΒC
85 x 63mm
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-37 of 54
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
CHKD
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-38 of 54
C7 C10
C4
D1
+15v
C8
C5
IC1
0v
+24v
0v
L4
0v
IC2
+5v
C2
C3
APPD
BB
07/03/02
DATE
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
TOLERANCES
SCALE
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
IN 2 PLACES
+ L5
C6
C11 C9
D2
L2
ALL SOLDER JOINTS TO BE MADE USING 16 .
L3
C1
L1
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
GB
MNR
DRAWN
STAGE 1
1:1
IN 2 PLACES
IN 2 PLACES
STAGE 2
Tel : 01494 777000
Fax : 01494 777002
England
Aerial Facilities Limited
10
CUSTOMER
TITLE
No
1A
DESCRIPTION
PRODUCTION ISSUE
ISSUE
IN 2 PLACES
IN 2 PLACES
DRAWING.No
PCB SUB-ASSEMBLY
13-001803
DUAL DC-DC CONVERTER(24V-12V/12V)
IN 2 PLACES
DATE
07/03/02
BY
MNR
5.1.8.3
Drg. Nō. 13-001803, Dual DC/DC Converter Assembly Drawing
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
CHKD
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
Page:-39 of 54
C11
0.47uF
C9
2.2uF
C8
100nF
100uH
L5
100uH
L4
APPD
BB
11/03/02
DATE
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIMAL PLACES ± 0.1mm
TOLERANCES
SCALE
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
USE IN CONJUNCTION WITH ASSEMBLY DRAWING 13-001803
+12V
0V
0V
+24V
ALL DIMENSIONS ARE IN mm
UNLESS OTHERWISE STATED
CH
MNR
DRAWN
OUTPUT
INPUT
N.T.S
C6
100nF
C5
100nF
C3
470uF
Gnd
O/P
F/Bk
L2
330uH
Gnd
On/Off
IC2
LM2576T12
12V
F/Bk
O/P
L1
330uH
Tel : 01494 777000
Fax : 01494 777002
England
Aerial Facilities Limited
D2
UF5400
C2
100uF
Vin
IC1
LM2576T12
12V
On/Off
D1
UF5400
Vin
C1
470uF
100u
L3
DESCRIPTION
CUSTOMER
DRAWING.No
CIRCUIT DIAGRAM
13-001872
DATE
11/03/02
No
28/06/02
ECN2581
BY
MNR
MNR
OUTPUT
(1 Amp)
PRODUCTION ISSUE
+12V
0V
1A
ISSUE
C10
0.47uF
2A
C7
2.2uF
DUAL DC-DC CONVERTOR (24V-12V/12V)
TITLE
C4
100nF
5.1.8.4
Drg. Nō. 13-001872, Dual DC/DC Converter Circuit Diagram (12V/12V)
5.1.9
Channel Selective Module (17-003012)
5.1.9.1
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 downconverted 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.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-40 of 54
5.1.9.2
Drg. Nō. 17-003080, Generic Channel Module Block Diagram
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-41 of 54
5.1.10 24V Relay Board (20-001602)
5.1.10.1
Description
The General Purpose Relay Board allows the inversion of signals and the isolation of
circuits. It is equipped with two dual pole change-over relays RL1 and RL2, with
completely isolated wiring, accessed via screw terminals.
Both relays are 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
relays fitted at RL1 and RL2.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-42 of 54
5.1.10.2
Drg. Nō. 20-001602, 24V Relay Board Assembly Drawing
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-43 of 54
5.1.10.3
Drg. Nō. 20-001671, Relay Board Circuit Diagram
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-44 of 54
5.2
Uplink Channelised Cell Enhancer 50-060603 (5U chassis)
5.2.1
DC Tap Module (21-001701)
5.7.1
Description
DC taps are used where it is necessary to inject a DC source ‘through’ an RF signal path
so that equipment in a remote location may be sourced with DC power (where it may be
impractical to have mains power). Where used, it will always be that one DC tap module
is used at each ‘end’ of the DC source, one to supply the DC onto the RF signal, and one
to remove it at its ultimate destination. The modules are designed for minimum insertion
loss (and minimum DC volt-drop) at the operating frequency. They are purely passive
devices, and should need no maintenance over their operating lifetime.
All other modules in this shelf have been described in the downlink Cell Enhancer
section 5.1.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-45 of 54
5.3
Power Supply Shelf 50-060604 (4U chassis)
5.3.1
24V 410W Flat-Pack Power Supply (96-300054)
5.3.1.1
Description
The power supply unit is a switched-mode type capable of supplying 24V DC at 17.0Amps
continuously. Equipment of this type typically requires approximately 5-7.0 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. The PSU modules are O.E.M devices and therefore no
drawings are available.
5.3.1.2
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: 17.0A
Temperature operational: -10ΒC to +55ΒC
range:
storage:
-40ΒC to +70ΒC
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-46 of 54
5.3.2
48V/8A DC Power Supply Module (96-300056)
5.3.2.1
Description
This PSU module is similar in size and type to the 24V module, being a multi-mainsvoltage switch mode unit but having a 48V DC output. The unit is used to power the
remote amplifier unit via the DC Tap Module (see section 5.2.1). A small volt drop from
the 48V PSU to the remote cell enhancer is expected so that the DC voltage may be easily
converted to 24V to power the remote enhancers’s electronics.
5.3.2.2
Technical Specification
AC Input Supply
110 or 220V nominal
Voltages:
90 to 132 or 180 to 264V (absolute limits)
Frequency: 47 to 63Hz
DC Output Supply:
48V DC (nominal)
Voltage:
45-50V (absolute limits)
Maximum Output Current: 6A
Temperature
operation: -10ΒC to +55ΒC
range
storage: -40ΒC to +70ΒC
All other modules in this shelf have been described elsewhere in this document.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-47 of 54
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.
Installation will be a matter of securing each shelf into its appropriate place in the rack
cabinet, connecting all the cables (RF, DC and alarm ) to their correct ports/connectors and
system testing (at the customer’s discretion) to prove the original specification. Power
should not be applied until all connections have been double-checked and verified.
Refer to the system drawing(s) in section 4. for cabling details.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-48 of 54
7.
MAINTENANCE
7.1
7.1.1
General Procedures
Basic 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 fitted
within shelves or trays and all housed within a standard 19” rack type cabinet.
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 Cell Enhancer 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 shelf must be 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.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-49 of 54
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 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. One
item that may need individual testing on site is the DC Tap system which supplies 48V DC
to the remote cell enhancer. When this unit is ‘on’ (but not necessarily with RF signals) a
DC voltage of over 40V should be available at the remote site at the input RF port. Be
careful not to ‘short out’ the enhancer output RF cable when DC is present – it will blow the
48V PSU fuse!
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-50 of 54
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:
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.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-51 of 54
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 rules 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.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-52 of 54
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 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.
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-53 of 54
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
5-Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-060601HBKM
Issue No:-1
Date:-04/07/2003
Page:-54 of 54
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