Axell Wireless 55 1547VHF User Manual

Weehawken Tunnel Radio
VHF Repeater System
For
G.E Transport Systems AFL Works Order N.: Q112727 AFL product part N.’s: 55-154701 (VHF Simplex BDA) 55-154801 (VHF Duplex BDA) 80-230801 (VHF Crystal Splitter) 80-230901 (VHF D/L Combiner) 80-231001 (VHF U/L Crystal Splitter) 80-231101 (VHF U/L Combiner) 80-231301 (VHF/UHF Power Supply)
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
1 of 75
Table of Contents
INTRODUCTION ............................................................................................................................................6
Scope ..............................................................................................................................................................................6
Purpose...........................................................................................................................................................................6
EC DECLARATION OF CONFORMITY....................................................................................................................7
Glossary of Terms .......................................................................................................................................................... 8
Key to AFL RF Module Drawing Symbols....................................................................................................................9
1. SAFETY CONSIDERATIONS ............................................................................................................10
1.1 Earthing of Equipment ...................................................................................................................................... 10
1.2 Electric Shock Hazard....................................................................................................................................... 10
1.3 RF Radiation Hazard......................................................................................................................................... 11
1.4 Chemical Hazard............................................................................................................................................... 12
1.5 Emergency Contact Numbers............................................................................................................................12
2. OVERVIEW/ SYSTEM DESCRIPTION............................................................................................ 13
2.1 General System Description.............................................................................................................................. 13
3. VHF REPEATER SYSTEM.................................................................................................................... 14
3.1 VHF System Diagram, Drg. N. 80-231481 ..................................................................................................... 14
3.2 VHF Rack Layout and Downlink Interconnections Diagram, Drg. N. 80-231451 ......................................... 15
3.3 VHF Rack Layout and Uplink Interconnections Diagram, Drg. N. 80-231452 .............................................. 16
3.4 Power Distribution Sketch ................................................................................................................................ 17
3.5 Weehawken VHF System Frequencies Look-up Table..................................................................................... 18
4. BAND SELECTIVE VHF CELL ENHANCERS................................................................................ 19
4.1 VHF Simplex BDA (55-154701) ...................................................................................................................... 19
4.1.1 VHF Simplex BDA Description................................................................................................................ 19
4.1.2 VHF Simplex BDA Electrical Specification ............................................................................................. 19
4.1.3 VHF Simplex BDA Mechanical Specification.......................................................................................... 20
4.1.4 VHF Simplex BDA System Diagram Drg. N. 55-154781 ......................................................................21
4.1.5 VHF Simplex BDA Shelf Outline Diagram Drg. N. 55-154791............................................................. 22
4.1.6 VHF Simplex BDA Shelf Assembly (55-154701) Parts List....................................................................23
4.2 VHF Duplex BDA (55-154801)........................................................................................................................ 24
4.2.1 VHF Duplex BDA Description ................................................................................................................. 24
4.2.2 VHF Duplex BDA Electrical Specification...............................................................................................24
4.2.3 VHF Duplex BDA Mechanical Specification ........................................................................................... 25
4.2.4 VHF Duplex BDA System Diagram 55-154801.......................................................................................26
4.2.5 VHF Duplex Shelf Outline Drawing, Drg. N. 55-154891....................................................................... 27
4.2.6 VHF Duplex BDA Shelf Assembly (55-154801) Parts List......................................................................28
5. VHF SPLITTERS/COMBINERS ................................................................................................................ 29
5.1 VHF Downlink Crystal Splitter (80-230801).................................................................................................... 29
5.1.1 VHF Downlink Crystal Splitter Description ............................................................................................. 29
5.1.2 VHF Downlink Crystal Splitter Technical Specification .......................................................................... 29
5.1.3 VHF Downlink Crystal Filter System Diagram, Drg. N 80-230881 ....................................................... 30
5.1.4 VHF Downlink Crystal Filter Shelf Outline Drawing, Drg. N. 80-230891.............................................31
5.1.5 VHF Downlink Crystal Filter Shelf Parts List ..........................................................................................32
5.2 VHF Downlink Combiner (80-230901)............................................................................................................ 33
5.2.1 VHF Downlink Combiner Description......................................................................................................33
5.2.2 VHF Downlink Combiner Technical Specification ..................................................................................33
5.2.3 VHF Downlink Combiner System Diagram, Drg. N. 80-230981 ...........................................................34
5.2.4 VHF Downlink Combiner Shelf Outline Drawing, Drg. N. 80-230991.................................................. 35
5.2.5 VHF Downlink Combiner Parts List......................................................................................................... 36
5.3 VHF Uplink Crystal Splitter (80-231001).........................................................................................................37
5.3.1 VHF Uplink Crystal Splitter Description .................................................................................................. 37
5.3.2 VHF Uplink Crystal Splitter Technical Specification............................................................................... 37
5.3.3 VHF Uplink Crystal Splitter System Diagram, Drg. N. 80-231081........................................................38
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
2 of 75
5.3.4 VHF Uplink Crystal Splitter, Drg. N. 80-231091 ................................................................................... 39
5.3.5 VHF Uplink Crystal Splitter Parts List......................................................................................................40
5.4 VHF Uplink Combiner (80-231101) ................................................................................................................. 41
5.4.1 VHF Uplink Combiner Description ..........................................................................................................41
5.4.2 VHF Uplink Combiner Technical Specification ....................................................................................... 41
5.4.3 VHF Uplink Combiner System Diagram, Drg. N. 80-231181 ................................................................ 42
5.4.4 VHF Uplink Combiner Shelf Outline Drawing, Drg. N. 80-231191....................................................... 43
5.4.5 VHF Uplink Combiner Parts List.............................................................................................................. 44
6. POWER SUPPLIES & ALARMS ........................................................................................................ 45
6.1 UHF/VHF Power Supply (80-231301) ............................................................................................................. 45
6.1.1 UHF/VHF Power Supply Description.......................................................................................................45
6.1.2 UHF/VHF Power Supply Technical Specification....................................................................................45
6.1.3 UHF/VHF Power Supply System Diagram............................................................................................... 45
6.1.4 UHF/VHF Power Supply Outline Drawing, Drg. N. 80-231391 ............................................................46
6.1.5 UHF/VHF Power Supply Parts List .......................................................................................................... 47
6.2 Alarm/Monitor Shelf (80-231303) .................................................................................................................... 48
6.2.1 Alarm/Monitor Shelf Description..............................................................................................................48
6.2.2 Alarm/Monitor Shelf Technical Specification...........................................................................................48
6.2.3 Alarm/Monitor Shelf Parts List................................................................................................................. 49
7. SUB-UNIT MODULES .........................................................................................................................50
7.1 VHF High Band Bandpass + Notch Filter (01-003105).................................................................................... 50
7.1.1 Description ................................................................................................................................................ 50
7.1.2 Technical Specification ............................................................................................................................. 50
7.2 Tx Hybrid Coupler (05-000101) ....................................................................................................................... 51
7.2.1 Description ................................................................................................................................................ 51
7.2.2 Technical Specification ............................................................................................................................. 51
7.3 3 Port Tx Hybrid Coupler (05-000103)............................................................................................................. 52
7.3.1 Description ................................................................................................................................................ 52
7.3.2 Technical Specification ............................................................................................................................. 52
7.4 1 Watt 3dB Broadband Splitter (05-002901) .................................................................................................... 53
7.4.1 Description ................................................................................................................................................ 53
7.4.2 Technical Specification ............................................................................................................................. 53
7.5 2-Port RF Isolator (08-930002)......................................................................................................................... 54
7.5.1 Description ................................................................................................................................................ 54
7.5.2 Technical Specification ............................................................................................................................. 54
7.6 ¼Watt 0- -30 & 0-15dB Switched Attenuator (10-000701 & 10-000901)........................................................54
7.6.1 General Application ..................................................................................................................................54
7.6.2 Switched Attenuators ................................................................................................................................54
7.7 3 Stage Amplifier Alarm Board (12-002201).................................................................................................... 55
7.7.1 Description ................................................................................................................................................ 55
7.7.2 Technical Specification ............................................................................................................................. 56
7.7.3 Generic Alarm Wiring Sketch................................................................................................................... 56
7.8 3 Stage Alarm/Simplex/Mute PCB (12-002213)............................................................................................... 57
7.8.1 Description ................................................................................................................................................ 57
7.9 5Watt Low Power Amplifier (12-004902)........................................................................................................57
7.9.1 Description ................................................................................................................................................ 57
7.9.2 Technical Specification ............................................................................................................................. 57
7.10 Dual DC/DC Converter (13-001803) ............................................................................................................ 58
7.10.1 Description ............................................................................................................................................58
7.10.2 Technical Specification .........................................................................................................................58
7.11 D.I.P Channel Control Module (17-002101)................................................................................................. 59
7.11.1 Description ............................................................................................................................................59
7.11.2 Programming Procedure........................................................................................................................ 60
7.11.3 12.5kHz step size switch functions ....................................................................................................... 60
7.11.4 25kHz step size switch functions .......................................................................................................... 61
7.11.5 Programming Example.......................................................................................................................... 61
7.11.6 17-002101 Controller Module DIP Switch Connector Data ................................................................. 62
7.11.7 Drg. N. 17-002190, DIP Switch Module Controller Outline Drawing................................................63
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
3 of 75
7.12 Channel Selective Modules (17-009143 & 17-009127)................................................................................ 64
7.12.1 Description ............................................................................................................................................64
7.12.2 Drg. N. 17-003080, Generic Channel Module Block Diagram ........................................................... 65
7.13 12 & 24V Relay Boards (20-001601 & 20-001602) ..................................................................................... 66
7.13.1 Description ............................................................................................................................................66
7.13.2 Technical Specification .........................................................................................................................66
7.14 12 & 24V Single Relay Board (80-008901 & 80-008902)............................................................................ 67
7.14.1 Description ............................................................................................................................................67
7.15 24V, 400W Power Supply Pack (96-300054) ............................................................................................... 67
7.15.1 Description ............................................................................................................................................67
7.15.2 Technical Specification .........................................................................................................................67
8. INSTALLATION................................................................................................................................... 68
8.1 General Remarks............................................................................................................................................... 68
8.2 RF Connections.................................................................................................................................................69
8.3 Commissioning .................................................................................................................................................69
9. MAINTENANCE................................................................................................................................... 70
9.1 Fault Finding ..................................................................................................................................................... 70
9.1.1 Quick Fault Checklist................................................................................................................................70
9.1.2 Fault Isolation............................................................................................................................................ 70
9.1.3 Downlink...................................................................................................................................................71
9.1.4 Uplink........................................................................................................................................................ 71
9.1.5 Checking service ....................................................................................................................................... 71
9.1.6 Fault repair ................................................................................................................................................72
9.1.7 Service Support ......................................................................................................................................... 72
9.2 Tools & Test Equipment ................................................................................................................................... 72
9.3 Care of Modules................................................................................................................................................ 73
9.3.1 General Comments.................................................................................................................................... 73
9.3.2 Module Removal (LNA’s, general procedure):......................................................................................... 73
9.3.3 Module Replacement (general): ................................................................................................................73
9.3.4 Power Amplifiers ......................................................................................................................................73
9.3.5 Low Power Amplifier Replacement.......................................................................................................... 74
9.3.6 Module Transportation:............................................................................................................................. 74
APPENDIX A INITIAL EQUIPMENT SET-UP CALCULATIONS.................................................... 75
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
4 of 75
AMENDMENT LIST RECORD SHEET
Issue
Nō.
Date Incorporated
by
Page No.’s
Amended
Reason for new issue
A 05/09/2005 CMH 1st Draft
Document Ref:-Weehawken_VHF
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
5 of 75
INTRODUCTION
Scope
This handbook is for use solely with the equipment identified by the AFL Part Number shown on the front cover. It is not to be used with any other equipment unless specifically authorised by Aerial Facilities Limited.
Purpose
The purpose of this handbook is to provide the user/maintainer with sufficient information to service and repair the equipment to the level agreed. Maintenance and adjustments to any deeper level must be performed by AFL, normally at the company’s repair facility in Chesham, England.
This handbook has been prepared in accordance with BS 4884, and AFL’s Quality procedures, which maintain the company’s registration to BS EN ISO 9001:2000 and to the R&TTE Directive of the European Parliament. Copies of the relevant certificates and the company Quality Manual can be supplied on application to the Quality Manager. This document fulfils the relevant requirements of Article 6 of the R&TTE Directive.
Limitation of Information Notice
This manual is written for the use of technically competent operators/service persons. No liability is accepted by AFL for use or misuse of this manual, the information contained therein, or the consequences of any actions resulting from the use of the said information, including, but not limited to, descriptive, procedural, typographical, arithmetical, or listing errors.
Furthermore, AFL does not warrant the absolute accuracy of the information contained within this manual, or it’s completeness, fitness for purpose, or scope.
AFL has a policy of continuous product development and enhancement, and as such, reserves the right to amend, alter, update and generally change the contents, appearance and pertinence of this document without notice.
All AFL products carry a twelve month warranty from date of shipment. The warranty is expressly on a return to base repair or exchange basis and the warranty cover does not extend to on-site repair or complete unit exchange.
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
6 of 75
EC DECLARATION OF CONFORMITY
In accordance with BS EN ISO/IEC 17050-1&-2:2004
AERIAL FACILITIES LTD Aerial House Asheridge Road Chesham Bucks HP5 2QD
United Kingdom
DECLARES, UNDER OUR SOLE RESPONSIBILITY THAT THE FOLLOWING PRODUCT
0086
PRODUCT PART NO[S] 55-154701, 55-154801 PRODUCT DESCRIPTION Weehawken VHF amplifier system IN ACCORDANCE WITH THE FOLLOWING DIRECTIVES:
1999/5/EC The Radio & Telecommunications Terminal Equipment Directive Annex V and its amending directives
HAS BEEN DESIGNED AND MANUFACTURED TO THE FOLLOWING STANDARD[S] OR OTHER NORMATIVE DOCUMENT[S]:
BS EN 60950 Information technology equipment. Safety. General requirements
ETS EN 301 489-1 EMC standard for radio equipment and services. Part 1. Common technical
requirements
I hereby declare that the equipment named above has been designed to comply with the relevant sections of the above referenced specifications. The unit complies with all essential requirements of the Directives.
SIGNED
B S BARTON TECHNICAL DIRECTOR
DATE: 08/11/2005
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
7 of 75
Glossary of Terms
Repeater or Cell Enhancer A Radio Frequency (RF) amplifier which can simultaneously
amplify and re-broadcast Mobile Station (MS) and Base Transceiver Station (BTS) signals.
Band Selective Repeater A Cell Enhancer designed for operation on a range of channels
within a specified frequency band.
Channel Selective Repeater A Cell Enhancer, designed for operation on specified
channel(s) within a specified frequency band. Channel frequencies may be factory set or on-site programmable.
AC Alternating Current AGC Automatic Gain Control BBU Battery Backup Unit BTS Base Transceiver Station CEMS Coverage Enhanced Management System C/NR Carrier-to-Noise Ratio DC Direct Current Downlink (D/L) RF signals Tx from the BTS to the Master Site FO Fibre Optic GND Ground ID Identification Number LED Light Emitting Diode LNA Low Noise Amplifier LPA Low Power Amplifier MOU Master Optical Unit M.S. Mobile Station MTBF Mean Time Between Failures N/A Not Applicable N/C No Connection OFR On Frequency Repeater OIP3 Output Third Order Intercept Point = RF
+(C/I)/2
out
PA Power Amplifier RF Radio Frequency RSA Receiver/Splitter Amplifier Rx Receiver S/N Serial Number Tx Transmitter Uplink (U/L) RF signals transmitted from the MS to the BTS VSWR Voltage Standing Wave Ratio WDM Wave division multiplex
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
8 of 75
Key to AFL RF Module Drawing Symbols
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
9 of 75
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.
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
10 of 75
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.
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
11 of 75
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
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
12 of 75
2. OVERVIEW/ SYSTEM DESCRIPTION
2.1 General System Description
The Weehawken tunnel radio system is designed to amplify various bands of radio frequencies, in either channelised or band selective modes. This handbook is dedicated to the VHF radio repeating system. All the hardware (except the River Portal remote BDA) is built into standard 19” rack mounted cabinets which have an environmental IP rating of 54.
The systems in this document will be described separately, as individual shelves (VHF) and the various passive combiners, splitters and cross-band coupler shelves will be described in other documents. Every active module in the entire system has a dedicated alarm and these are series wired within the shelves to a relay which gives a volt-free output pair for each shelf which is wired to a ‘krone-block’ termination in the rack cabinet.
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
13 of 75
3. VHF REPEATER SYSTEM
3.1 VHF System Diagram, Drg. N. 80-231481
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
14 of 75
3.2 VHF Rack Layout and Downlink Interconnections Diagram, Drg. N. 80-231451
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
15 of 75
3.3 VHF Rack Layout and Uplink Interconnections Diagram, Drg. N. 80-231452
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
16 of 75
3.4 Power Distribution Sketch
Alarms
115V
Supply
BDF
ACEG
12V Out putsAlarms Alarms Alarms
IN
IN
OUT
A
OUT
B
+ ++
+ ++
O UT O UT IN IN
C
D
ON
OFF
AB
+ ++
ON
OFF
110/230V A C
ACB
ON
OFFONOFF
110/230V A C
115V
Supply
ABCD
+ ++
A
BD
F
ACB
CE
D
D
ABCD
ABCD
ABCD
ACB
ABCD
ON
OFFONOFF
ON
OFFONOFF
12V Inputs
ON
OFF
+ ++
115V
Supply
115V From R ack 1 115V to R ack 2
24V Supply Leads
A
B
C
D
E
F
G
HK
J
110/230V A C
A
B
C
D
E
F
G
HK
J
ACB
ACB
ACB
D
D
D
12V DC I solation
A
ACB
ACB
ACB
D
D
D
D
B
ACB
D
A
B
C
D
A
B
C
D F
HK
A
B
C
C
D
E
E
F
G
G
HK
J
J
24V Inputs 24V Outputs
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
17 of 75
3.5 Weehawken VHF System Frequencies Look-up Table
Agency
Jersey City Medical Center - EMS VHF CHN 1 153.7850 153.7850 North Hudson Regional Fire and Rescue VHF CHN 2 154.3250 154.3250 NJ Statewide Police (SPEN) VHF CHN 3 154.6800 154.6800 Jersey City Medical Center - EMS VHF CHN 4 155.2350 155.2350 Jersey City Medical Center - EMS VHF CHN 5 155.2800 155.2800 North Hudson Regional Fire and Rescue VHF CHN 6 158.8650 154.1450 Weehawken Township VHF CHN 7 159.0900 159.0900 Weehawken Township VHF CHN 8 159.2100 159.2100 New Jersey Transit Police Dept. VHF CHN 9 161.5200 160.8300
Channel Number
Uplink Tx Downlink Rx
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
18 of 75
4. BAND SELECTIVE VHF CELL ENHANCERS
4.1 VHF Simplex BDA (55-154701)
4.1.1 VHF Simplex BDA Description
The simplex shelves are part of the VHF amplification and have crystal filters instead of bandpass filters to set bandwidths. There are two downlink bands and three uplink bands, the downlink paths having isolators fitted to each of the 5Watt output stages to prevent two outputs from interfering with each other. All amplifiers have built-in alarms which are configured as a summary, volt-free relay contact pair terminating at pins 1 & 2 on the ‘D’ type alarm connector.
Note that the control circuitry is omitted from the system diagram for reasons of clarity and simplification.
4.1.2 VHF Simplex BDA Electrical Specification
PARAMETER SPECIFICATION
153.75-155.3MHz (Downlink1)
159.0-161.0MHz (Downlink2)
Frequency range:
153.75-155.3MHz (Uplink1)
158.85-159.3MHz (Uplink2)
161.5-162.0MHz (Uplink)
Gain: >90dB
Gain Adjustment: 0 – 15dB (in 1dB step)
Uplink Power: >5.0Watts
Downlink Power: >5.0Watts
IP3:
Uplink +48dBm
Downlink +48dBm
Noise Figure: <6dB
AGC level: -2dBm (uplink & downlink)
Channel module gain:
23dB (downlink) 24dB (uplink)
VSWR: better than 1.5:1
RF Connectors: N type, female
Temperature range:
Alarms Fitted:
(volt-free contacts/TTL)
operational:
storage:
-10°C to +55°C
-40°C to +70°C 1 U/L amplifiers 2 D/L amplifiers 3 Channel module
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
19 of 75
4.1.3 VHF Simplex BDA Mechanical Specification
PARAMETER SPECIFICATION
Height: Standard Eurorack
Rack
Width: 19" (482.6mm)
Depth: 600mm (800 optional)
Height: 3U
Shelves:
Width: 19" (482.6mm)
Depth:
<400mm(excluding heatsinks, connectors, handles and feet)
operational: -10°C to +55°C Temperature
range:
storage: -40°C to +70°C Weight: <15kg
Humidity: 10 – 90% non-condensing
RF Connectors: N type female
Environmental Protection: IP54
Case: Alocrom 1200
Finish:
Heatsinks: Matt black
Handles: Silver anodised alloy
Fascia Painted to RAL 7035
Unit supplied with suitable supply input
Supply Cable:
leads, connector and specified length of cable (where appropriate)
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
20 of 75
4.1.4 VHF Simplex BDA System Diagram Drg. N. 55-154781
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
21 of 75
4.1.5 VHF Simplex BDA Shelf Outline Diagram Drg. N. 55-154791
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
22 of 75
4.1.6 VHF Simplex BDA Shelf Assembly (55-154701) Parts List
AFL Part Nō. Part Description Qty.
08-930002 2 PORT ISOLATOR 150-300MHz SMA 2 10-000901 SW. ATTENUATOR 0.25W 0-15dB 4 11-006002 LNA VHF 70-500MHz WITH RELAY 6 12-002213 3 STAGE ALARM/SIMPLEX MUTE PCB SUB-ASS 2 12-002220 3 STAGE ALARM PCB COVER 2 12-002826 ALARM BOARD ACRYLIC LENS 2 12-004902 POWER AMP VHF 5W CLASS AB 2 13-001803 DUAL DC/DC CONVERTER 24V-12V 1A 2 17-009143 VHF 10Kstep CH MOD 15kHz 8p BW+IFRX 2 17-009724 EQUIP. MTG PLATE No.5 2 19-000826 2U,3U,4U 19" UNIT 400 DEEP LID 1 19-000921 3U 19" UNIT 400 DEEP CHASSIS + BKT 1 19-000924 3U 19" UNIT FRONT PANEL FAB 1 20-001602 24V RELAY BOARD 2 80-063920 HEATSINK 2U ASS140 (5W) MILCHBUCK 2 91-030002 N ADAPTOR PANEL FEMALE:FEMALE 4 91-500001 POWER PLG 3 PIN PNL.MOUNT NC-X 1 91-510003 3 PIN R.ANGLE FREE SOC.NC-X. 1 91-600001 'D'TYPE 9 WAY PLUG S/B TERM 1 91-600014 'D' 9 WAY SOCKET S/B (NON FILTERED) 5 91-620001 'D' 25 WAY SOCKET S/B TERM 2 91-700017 ICD 15 WAY 0.1' CONNECTOR 2 93-540035 1K3 0.25W 1% RES MRS25 M:F 2 96-110001 FUSE HOLDER 20 x 5mm6.3A 1 96-600002 INSULATING BOOT SMALL 1 96-600003 INSULATING BOOT D.C. 1 96-700017 LED AMBER 5mm SEALED IP66 2 96-700034 LED RED 5mm IP67 1 96-700035 LED GREEN 5mm IP67 1 97-400005 HANDLE TYPE H6802 3U [ALLOY] 2
Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
23 of 75
Loading...
+ 52 hidden pages