Axell Wireless Q10965 User Manual
9 Channel, Channelised
UHF Cell Enhancer
Maintenance Handbook
For
Terry Consulting
AFL Works Order N.: Q10965
AFL product part N.: 50-025301
H/book Number:-50-025301HBKM
9 Way Channelised UHF Cell Enhancer
Maintenance Handbook
Issue No:-
Date:-04/07/2003
1
Page:-
1 of 69
Table of Contents
AMENDMENT LIST RECORD SHEET .................................................................................................5
INTRODUCTION ....................................................................................................................................... 6
Scope...........................................................................................................................................................................6
Purpose.......................................................................................................................................................................6
Glossary of Terms .....................................................................................................................................................7
Key to AFL RF Module Drawing Symbols.............................................................................................................8
1. SAFETY CONSIDERATIONS ....................................................................................................... 9
1.1 Earthing of Equipment................................................................................................................................9
1.2 Electric Shock Hazard .................................................................................................................................9
1.3 RF Radiation Hazard...................................................................................................................................9
1.4 Chemical Hazard........................................................................................................................................10
1.5 Emergency Contact Numbers ...................................................................................................................10
2. OVERVIEW/SYSTEM DESCRIPTION .....................................................................................11
3. SPECIFICATION ..........................................................................................................................12
3.1 9 Channel Channelised Cell Enhancer 50-025301 Parts Lists ...............................................................12
3.1.1 VTA-Downlink Duplexer Shelf 50-025302 Parts List ............................................................................12
3.1.2 VTA Downlink Amplifier Shelf 50-025303 Parts List............................................................................13
3.1.3 VTA Downlink Channel Shelf 50-025304 Parts List ..............................................................................14
3.1.4 VTA Uplink Duplexer Shelf 50-025305 Parts List..................................................................................14
3.1.5 VTA Uplink Amplifier Shelf 50-025306 Parts List.................................................................................15
3.2 Technical Specification ..............................................................................................................................16
3.3 Mechanical Specification ...........................................................................................................................17
4. SYSTEM DRAWINGS ..................................................................................................................18
4.1 Drg. Nō. 50-025381, Channelised CE System Diagram ..........................................................................18
5. SUB-UNIT MODULES .................................................................................................................. 19
5.1 VTA Downlink Duplexer Shelf 60-025302 (4U chassis)..........................................................................19
5.1.1 Bandpass Filters (02-011204 & 02-013401)............................................................................................19
5.1.1.1 Description.......................................................................................................................................19
5.1.1.2 Technical Specification (02-011204) ...............................................................................................19
5.1.1.3 Technical Specification (02-013401) ...............................................................................................19
5.2 VTA Downlink Amplifier Shelf (50-025303, 8U Chassis).......................................................................20
5.2.1 UHF 3dB Splitter (05-002603) ................................................................................................................20
5.2.1.1 Description.......................................................................................................................................20
5.2.1.2 Technical Specification ....................................................................................................................20
5.2.2 ¼Watt 0- -30dB Switched Attenuator (10-000701).................................................................................20
5.2.2.1 General Application .........................................................................................................................20
5.2.2.2 Switched Attenuators........................................................................................................................20
5.2.3 Low Noise Amplifier (11-006102) ..........................................................................................................21
5.2.3.1 Description.......................................................................................................................................21
5.2.3.2 Technical Specification ....................................................................................................................21
5.2.3.3 Drg. Nō. 11-006170, LNA Circuit Diagram (RF)............................................................................22
5.2.3.4 Drg. Nō. 11-006171, LNA Schematic Diagram (DC) ......................................................................23
5.2.4 Low Noise Amplifiers (11-007302 & 11-007402) ..................................................................................24
5.2.4.1 Description.......................................................................................................................................24
5.2.4.2 Technical Specification, (11-007302) ..............................................................................................24
5.2.4.3 Technical Specification (11-007402) ...............................................................................................24
5.2.4.4 Drg. Nō. 11-007302, LNA Assembly With Alarm Relay ..................................................................25
5.2.4.5 Drg. Nō. 11-007370, LNA RF Circuit Diagram...............................................................................26
5.2.4.6 Drg. Nō. 11-007371, LNA DC Wiring Diagram ..............................................................................27
5.2.5.7 Drg. Nō. 11-003971, LNA DC Circuit Diagram..............................................................................28
5.2.6 3 Stage Amplifier Alarm Boards (12-002201).........................................................................................29
5.2.6.1 Description.......................................................................................................................................29
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5.2.6.2 Technical Specification ....................................................................................................................30
5.2.6.3 Drg. Nō. 12-002201, 3 Stage Alarm Board Assembly Drawing & Parts List..................................31
5.2.6.4 Drg. Nō. 12-002270, 3 Stage Alarm Board Circuit Diagram..........................................................32
5.2.6.5 Generic Rack Shelf Enclosure Alarm Wiring Sketch .......................................................................33
5.2.7 450MHz 20W Power Amplifier (12-004201)..........................................................................................35
5.2.7.1 Description.......................................................................................................................................35
5.2.7.2 Technical Specification ....................................................................................................................35
5.2.7.3 Drg. Nō. 12-004201, PA General Assembly ....................................................................................36
5.2.7.4 Drg. Nō. 12-004270, PA Circuit Diagram.......................................................................................37
5.2.7.5 Drg. Nō. 12-004270C1, PA Parts List(1).........................................................................................38
5.2.7.6 Drg. Nō. 12-004270C2, PA Parts List(2).........................................................................................39
5.2.7.7 Drg. Nō. 12-003670, PA to Alarm Wiring Details...........................................................................40
5.2.8 Single DC/DC Converter (13-001702) ....................................................................................................41
5.2.8.1 Description.......................................................................................................................................41
5.2.8.2 Technical Specification ....................................................................................................................41
5.2.8.3 Drg. Nō. 13-001702, 12.8V Regulator Assembly Drawing & Parts List.........................................42
5.2.8.4 Drg. Nō. 13-001771, 12.8V Single Regulator Circuit Diagram ......................................................43
5.2.9 24V Single Relay Board (80-008902)......................................................................................................44
5.2.9.1 Description.......................................................................................................................................44
5.2.9.2 Drg. Nō. 80-008970, Single Relay Board Circuit Diagram.............................................................45
5.2.10 24V 410W Power Supply (96-300054)................................................................................................46
5.2.10.1 Description...................................................................................................................................46
5.2.10.2 Technical Specification ................................................................................................................46
5.3 VTA Downlink Channel Shelf (50-025304)..............................................................................................47
5.3.1 UHF 3dB Splitter (05-002603) See section 5.2.1 ....................................................................................47
5.3.2 4-Way Splitter (05-003401) .....................................................................................................................47
5.3.2.1 Description.......................................................................................................................................47
5.3.2.2 Technical Specification ....................................................................................................................47
5.3.3 Channel Control Module (17-002101).....................................................................................................48
5.3.3.1 Description.......................................................................................................................................48
5.3.3.2 Technical Specification ....................................................................................................................48
5.3.3.3 VHF/ UHF Programming Procedure ..............................................................................................49
5.3.3.4 VHF/ UHF Programming Example .................................................................................................50
5.3.4 Channel Selectivity Module (17-010601)................................................................................................51
5.3.4.1 Description.......................................................................................................................................51
5.3.4.2 Drg. Nō. 17-003080, Generic Channel Module Block Diagram .....................................................52
5.4 VTA Uplink Duplexer Shelf (50-025305, 4U Chassis) ............................................................................53
5.4.1 Bandpass Filters (02-011204 & 02-013401) See section 5.1.1................................................................53
5.5 VTA Uplink Amplifier Shelf (50-025306, 8U Chassis)............................................................................53
5.5.1 20Watt Class A Power Amplifier (12-016301)........................................................................................53
5.5.1.1 Description.......................................................................................................................................53
5.5.1.2 Technical Specification ....................................................................................................................53
5.5.1.3 Drg. Nō. 12-016370, 20W PA Circuit Diagram ..............................................................................54
5.5.2 Automatic Gain Control (17-001101, Det. & 17-001201, Atten.) ...........................................................55
5.5.2.1 Description.......................................................................................................................................55
5.5.2.2 Technical Specification ....................................................................................................................56
5.5.2.3 Drg. Nō. 17-001101, ACG Detector Assembly ................................................................................57
5.5.2.4 Drg. Nō. 17-001171, AGC Detector Circuit Diagram.....................................................................58
5.5.2.5 Drg. Nō. 17-001171C, AGC Detector Parts List .............................................................................59
5.5.2.6 Drg. Nō. 17-001201, AGC Attenuator Assembly Drawing ..............................................................60
5.5.2.7 Drg. Nō. 17-001270, AGC Attenuator Circuit Diagram..................................................................61
5.5.2.8 Drg. Nō. 17-001270C, AGC Attenuator Parts List ..........................................................................62
6. INSTALLATION............................................................................................................................ 63
6.1 Initial Installation Record .........................................................................................................................63
7. MAINTENANCE............................................................................................................................ 64
7.1 General Procedures....................................................................................................................................64
7.1.1 Basic Fault Finding ..................................................................................................................................64
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7.1.2 Downlink..................................................................................................................................................65
7.1.3 Uplink.......................................................................................................................................................65
7.1.4 Fault repair ...............................................................................................................................................65
7.1.5 Checking service ......................................................................................................................................66
7.1.6 Service Support ........................................................................................................................................66
7.2 Tools & Test Equipment............................................................................................................................66
7.3 Care of Modules .........................................................................................................................................67
7.3.1 General Comments...................................................................................................................................67
7.3.2 Module Removal (LNA’s, general procedure): .......................................................................................67
7.3.3 Module Replacement (general): ...............................................................................................................67
7.3.4 Power Amplifiers .....................................................................................................................................67
7.3.5 Low Power Amplifier Replacement.........................................................................................................68
7.3.6 Module Transportation:............................................................................................................................68
APPENDIX A INITIAL EQUIPMENT SET-UP CALCULATIONS............................................... 69
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AMENDMENT LIST RECORD SHEET
Issue
Nō.
Date Incorporated
by
Page No.’s
Amended
Reason for new issue
1 04/08/2003 CMH 1st Issue
Document Ref:-50-025301HBKM
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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.
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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, remotely set by computer, 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
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Key to AFL RF Module Drawing Symbols
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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 50, and that of free space at 377, 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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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 +44 (0)1494 777000
Fax +44 (0)1494 777002
e-mail qa@aerial.co.uk
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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 4-port device with direct connection to two
antennas, a highly directional Yagi or similar aligned towards the base site (for the nine
downlink channels) and a dedicated uplink antenna for 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 supplied in this instance in 5 shelf units. Each shelf/tray unit
containing active modules has a ‘D.C. on’ indicator on the front panel and the PSU (in the
downlink amplifier shelf) also has an ‘A.C. on’ indicator.
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3. SPECIFICATION
3.1 9 Channel Channelised Cell Enhancer 50-025301 Parts Lists
AFL Part N. Description Qty.
50-025302 VTA-Downlink Duplexer Shelf 1
50-025303 VTA-Downlink Amplifier Shelf 1
50-025304 VTA-Downlink Channel Shelf 1
50-025305 VTA-Uplink Duplexer Shelf 1
50-025306 VTA-Uplink Amplifier Shelf 1
3.1.1 VTA-Downlink Duplexer Shelf 50-025302 Parts List
02-011204 6P TETRA C/L FILT (NARROW) SMA 2
02-013401 6P CL FLTR(0.5 min BW)LARGE SMA ASSY 2
19-001021 4U 19" UNIT 400 DEEP CHASSIS + BKT 1
19-001024 4U 19" UNIT FRONT PANEL FAB 1
91-020004 N JACK PANEL UT-141 6
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3.1.2 VTA Downlink Amplifier Shelf 50-025303 Parts List
AFL Part N. Description Qty.
05-002603 UHF 3dB SPLITTER SMA 2
10-000701 1/4W0-30dB SWITCHED ATTENUATOR 2
11-006102 LNA 380-500MHz 1W WITH RELAY 2
11-007302 LNA. 380-500MHz 20dB (C/W RELAY) GA 1
11-007402 LNA. 380-500MHz 30dB (C/W RELAY) GA 3
12-002201 3 STAGE AMPLIFIER ALARM BOARD 2
12-002220 3 STAGE ALARM PCB COVER 2
12-004201 PWR AMP.450MHz 20W version CLASS A 2
13-001702 VOLTAGE REGULATOR Board 12V 2
50-012820 CCE RACK MOUNTED 8U CHASSIS 1
50-012822 CCE RACK MOUNTED LID 1
50-012825 CCE RACK MOUNTED HEATSINK BRACKET 4
50-027720 RACK MTD CHAN C.E. MODIFIED HEATSIN 2
80-008902 24V RELAY PCB ASSEMBLY 1
80-032320 10W PA HEATSINK (NEEDS 17-000526) 1
80-090822 C/E 8U FRONT PANEL, AFL (RAL7035) 1
91-030002 N ADAPTOR PANEL FEMALE:FEMALE 8
91-100003 SMA PLUG ELBOW UT-141 4
91-130001 SMA ADAPT 'T' ALL FEMALE 3 GHZ 1
91-520003 POWER SWITCHD/FUSED MAINS INL. 1
91-600014 'D' 9 WAY SOCKET S/B (NON FILTERED) 2
91-600015 'D' 9 WAY PLUG S/B (NON FILTERED) 1
91-700017 ICD 15 WAY 0.1' CONNECTOR 5
93-540035 1K3 0.25W 1% RES MRS25 M:F 2
96-300054 24V 17A PSU 400W (XP BCC) 1
96-500005 DC INPUT FILTERS 1
96-700002 LED.GREEN 5mm SEALED IP66 1
96-700005 LED.RED 5mm SEALED IP66 1
97-400002 HANDLE TYPE H6803 4U.[ALLOY] 2
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3.1.3 VTA Downlink Channel Shelf 50-025304 Parts List
05-002603 UHF 3dB SPLITTER SMA 2
05-003302 4 WAY SPLITTER GSM 900MHz 4
05-003401 4 WAY SPLITTER LOW POWER 4
17-002101 CHANNEL CONTROL MODULE 3
17-003022 MODULE PATTERNED LEAVE 8
17-003023 SUBRACK SIDE PANEL 4
17-003024 SUBRACK REAR BRACKET 8
17-003025 BOTTOM MODULE GUIDE 8
17-003028 MODULE SQUARE LEAVE 8
17-003029 TOP MODULE GUIDE 8
17-010601 CHAN MOD 480MHz, 15kHz B/W 9
97-000002 BLACK MODULE CAGE RUNNER 16
97-600001 SUBRACK FRONT HORIZ 4
97-600002 SUBRACK M2.5 STD TAP 4
3.1.4 VTA Uplink Duplexer Shelf 50-025305 Parts List
02-011204 6P TETRA C/L FILT (NARROW) SMA 2
02-013401 6P CL FLTR(0.5 min BW)LARGE SMA ASSY 2
19-001021 4U 19" UNIT 400 DEEP CHASSIS + BKT 1
19-001024 4U 19" UNIT FRONT PANEL FAB 1
91-020004 N JACK PANEL UT-141 6
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3.1.5 VTA Uplink Amplifier Shelf 50-025306 Parts List
02-011204 6P TETRA C/L FILT (NARROW) SMA 1
02-013401 6P CL FLTR(0.5 min BW)LARGE SMA ASSY 1
10-000701 1/4W0-30dB SWITCHED ATTENUATOR 2
11-006102 LNA 380-500MHz 1W WITH RELAY 1
11-007302 LNA. 380-500MHz 20dB (C/W RELAY) GA 3
11-007402 LNA. 380-500MHz 30dB (C/W RELAY) GA 3
12-016301 PA 380-470MHz 20W CLASS A 1
13-001702 VOLTAGE REGULATOR Board 12V 2
13-003011 DC/DC CONVERTER 24-12V 8A PCB ASSY 1
17-001101 CELL ENHANCER AGC DETECTOR/AMP ASS 2
17-001201 C/E AGC UNIT ATTENUATOR ASSY 2
50-012820 CCE RACK MOUNTED 8U CHASSIS 1
50-012822 CCE RACK MOUNTED LID 1
50-012825 CCE RACK MOUNTED HEATSINK BRACKET 4
50-027720 RACK MTD CHAN C.E. MODIFIED HEATSIN 2
80-008902 24V RELAY PCB ASSEMBLY 1
80-032320 10W PA HEATSINK (NEEDS 17-000526) 1
80-090822 C/E 8U FRONT PANEL, AFL (RAL7035) 1
91-030002 N ADAPTOR PANEL FEMALE:FEMALE 4
91-100003 SMA PLUG ELBOW UT-141 4
91-130001 SMA ADAPT 'T' ALL FEMALE 3 GHZ 1
91-520003 POWER SWITCHD/FUSED MAINS INL. 1
91-600014 'D' 9 WAY SOCKET S/B (NON FILTERED) 2
91-600015 'D' 9 WAY PLUG S/B (NON FILTERED) 1
93-540035 1K3 0.25W 1% RES MRS25 M:F 2
96-300054 24V 17A PSU 400W (XP BCC) 1
96-500005 DC INPUT FILTERS 1
96-700002 LED.GREEN 5mm SEALED IP66 1
96-700005 LED.RED 5mm SEALED IP66 1
97-400002 HANDLE TYPE H6803 4U.[ALLOY] 2
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3.2 Technical Specification
PARAMETER SPECIFICATION
Downlink Frequency Range: 491.4-492.2MHz
Single Downlink Channel Frequency: 485.5875MHz
Uplink Frequency Range: 488.4-489.6MHz
Single Uplink Frequency: 485.5875MHz
12.5kHz adjacent channel >20dBChannel Bandwidth selectivity:
25kHz adjacent channel >80dB
Number of Channels: 9
Number of ports: 4
RF Connectors: N type, female
Impedance: 50
VSWR: Better than 1.5:1
Sensitivity: 0.35 microvolts @ 12dB SINAD
Downlink Output Power: 40 Watts
Uplink Output Power: 20Watts
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: 300 Watts
Alarms:
(Volt-free relay contacts)
Amplifiers
Channel phase unlock
PSU Failure
MTBF: 80,000 Hrs.
Housing: 19” Rack mounted
H/book Number:-50-025301HBKM
9 Way Channelised UHF Cell Enhancer
Maintenance Handbook
Issue No:-
Date:-04/07/2003
1
Page:-
16 of 69
3.3 Mechanical Specification
PARAMETER SPECIFICATION
(excluding heatsinks, connectors, handles and feet)
Temperature Range:
RF Connectors: N type female
Environmental Protection: IP54
Height: Eurorack Shelves(1U=44.5mm)
Width: 19"Case Size:
Depth: <500mm
operational: -10°C to +55°C
storage: -40°C to +70°C
Weight: <15kg*
Humidity: 5 – 95% non-condensing
Case: Alocrom
Heatsinks: Matt blackFinish:
Handles: Alocrom
Unit supplied with suitable supply input
Supply Cable:
leads with connector and specified length
of cable (where appropriate)
* Note: Individual shelf weights unspecified.
H/book Number:-50-025301HBKM
9 Way Channelised UHF Cell Enhancer
Maintenance Handbook
Issue No:-
Date:-04/07/2003
1
Page:-
17 of 69
4. SYSTEM DRAWINGS
4.1 Drg. N. 50-025381, Channelised CE System Diagram
A
02-013401
485.5875MHz
BANDPASS FILTER
11-006102
LNA LNA
11-007402
B
LCX
DOWNL INK
PA
12-004201
C
02-011204
491.4-492.2MHz
BANDPASS FILTER
CO MBI NER
05-002603
SPLITTER
05-002603
LNA
11-006102
D
PA
12-004201
E
50-025302
50-025303
F
G
H
2
A
50-025381
LCX
UPL INK
11 CHANNE L CHANNELIS ED CE (CSIC)
50-025305
02-013401
485.5875MHz
BANDPASS FILTE R
LNA
11-007402
02-01340111-007402
BANDPASS FILTE R
LNA
50-025306
SYSTEM DIAGRAM
TI TLE
CUSTOMER DRAWING No
England
Tel : 01494 777000
Fax : 01494 777002
02-013401
485.5875MHz
BANDPASS FILTER
LNA
11-007402
02-013401
488.4-489.6MHz
BANDPASS FILTER
LNA 488.4-489.6MHz
11-007302
Aerial Facili ties Limited
LNA
11-007302
COM BI NER
COM BINER
05-003401
485.5875M H z
B/W=15kHz
17-010601
CHANNEL M O DULE
dB
0-30dB
10-000701
ATTENUATO R
LNA
11-007402
02-013401
485.5875MHz
BANDPASS FILT ER
491.6375M H z
491.8375M H z
B/W=15kHz
B/W=15kHz
17-010601
FREQUENCY PROGRAMMING DATA
FREQUENCY PROGRAMMING DATA
8 x CHANNEL MODULE
SPLITTER
05-003401
05-002603
492.0375M H z
491.6175M H z
492.1750M H z
491.6625M H z
FREQUENCY PROGRAMMING DATA
FREQUENCY PROGRAMMING DATA
FREQUENCY PROGRAMMING DATA
SPLITT ER
05-002603
dB
0-30dB
10-000701
ATTENUATOR
LNA
11-007402
02-011204
491.4-492.2MHz
BANDPASS FILT ER
B/W=15kHz
B/W=15kHz
B/W=15kHz
492.0125M H z
B/W=15kHz
B/W=15kHz
FREQUENCY PROGRAMMING DATA
FREQUENCY PROGRAMMING DATA
50-025304
491.4125M H z
B/W=15kHz
FREQUENCY PROGRAMMING DATA
FREQUENCY PROGRAMMING DATA
0-30dB
dBdB
AGC ATT .
LNA
11-007302
10-000701
ATTENUATO R
LNA
11-006102
AGC
AGC DET.
17-001101 17-001201
02-013401
485.5875MHz
BANDPASS FILTE R
0-30dB
AGC ATT .
17-001201
LNA
11-00730212-016301
dBAGC dB
10-000701
ATTENUATO R
REP RODUCTION OR US E OF THIS DESI GN BY OTHERS IS
PA
AGC DET.
17-001101
02-013401
488.4-489.6MHz
BANDPASS FILTE R
UPL INK
ANTENNA
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
DATEDRAWN
1:1
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING
BY AE RIAL FACILITIES LTD.
TWO DECIMAL PLACES ± 0.1mm
NO DECIMAL PLACE ± 1mm
ONE DECIMAL PLACE ± 0.3mm
TOLE RANCES SCALE
UNLESS OTHERWISE STATED
ALL DIMENSIONS A RE IN mm
PB G D
MNR 30/07/03
CHKD APPD
DATEDESCRIP TIONNo
30/ 07 / 03
ISSUE
PRODUCT ION ISS UE MNR
1A
1 23 45 6 78 9101112
A
B
ANT ENNA
DO WNLI NK
C
H/book Number:-50-025301HBKM
D
E
F
9 Way Channelised UHF Cell Enhancer
Maintenance Handbook
Issue No:-
Date:-04/07/2003
1
Page:-
G
18 of 69
1 23 45 6 78 9101112
THIRD ANGLE PROJECTION
H
5. SUB-UNIT MODULES
5.1 VTA Downlink Duplexer Shelf 60-025302 (4U chassis)
5.1.1 Bandpass Filters (02-011204 & 02-013401)
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 50 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 (02-011204)
PARAMETER SPECIFICATION
Passband 491.4-492.2 MHz
Insertion Loss 1.9 dB typical
> 485 MHz > 55 dB
Rejection
> 458-459 MHz > 60 dB
Power Rating 50 Watt
Impedance 50 ohm
VSWR Better than 1.2:1
5.1.1.3 Technical Specification (02-013401)
Passband 485.5875MHz
Insertion Loss 1.9 dB typical
> 492 MHz > 60 dB
Rejection
> 488-489 MHz > 55 dB
Power Rating 50 Watt
Impedance 50 ohm
VSWR Better than 1.2:1
H/book Number:-50-025301HBKM
9 Way Channelised UHF Cell Enhancer
Maintenance Handbook
Issue No:-
Date:-04/07/2003
1
Page:-
19 of 69
5.2 VTA Downlink Amplifier Shelf (50-025303, 8U Chassis)
5.2.1 UHF 3dB Splitter (05-002603)
5.2.1.1 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.
5.2.1.2 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
5.2.2 ¼Watt 0- -30dB Switched Attenuator (10-000701)
5.2.2.1 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.
5.2.2.2 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 50 impedance over their operating
frequency at both input and output.
9 Way Channelised UHF Cell Enhancer
Maintenance Handbook
H/book Number:-50-025301HBKM
Issue No:-
Date:-04/07/2003
1
Page:-
20 of 69
5.2.3 Low Noise Amplifier (11-006102)
5.2.3.1 Description
The 15dB gain low noise amplifier used in the unit is a double stage solid-state low noise
amplifier. Class A circuitry is used throughout the units to ensure excellent linearity 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.
5.2.3.2 Technical Specification
PARAMETER SPECIFICATION
Frequency range: 380-500MHz
Bandwidth: <150MHz
Gain: 15.5dB ±0.5dB
1dB compression point: 31dBm
IP3: 46dBm
I/O return loss: >18dB
Noise figure: <1.3dB
Supply requirement: 10 – 24V, DC
Consumption: 510-540mA @ (10 – 24V)
storage: -20°C to +55°CTemperature
range
operation: -40°C to +70°
H/book Number:-50-025301HBKM
9 Way Channelised UHF Cell Enhancer
Maintenance Handbook
Issue No:-
Date:-04/07/2003
1
Page:-
21 of 69
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