Axell Wireless 60 2287SERIES handbook
Axell Wireless Limited
WMATA CRCS Redundant Antenna System
General Overview
Handbook
For
GPD Telecom Inc.
AWL Works Order Q119862
AWL Product Part Nos.:
60-228801 - WMATA Jackson Graham Building CRAS System
60-228701 - WMATA Carmen Turner Facility CRAS System
60-228901 - WMATA Gallery Place Station CRAS System
Axell Wireless UK
Aerial House
Asheridge Road
Chesham, Buckinghamshire
HP5 2QD, United Kingdom
Tel: + 44 (0) 1494 777000
Fax: + 44 (0) 1494 777002
info@axellwireless.com
www.axellwireless.com
Axell Wireless Sweden
Box 7139
174 07 Sundbyberg
Sweden
Tel: + 46 (0) 8 475 4700
Fax: + 46 (0) 8 475 4799
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 1 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
Table of Contents
1.
1.1.
1.2.
2.
2.1.
2.2.
2.3.
2.4.
2.5.
2.6.
2.7.
3.
3.1.
3.2.
3.3.
3.3.1. Dual Fiber Optic Unit 60-228703 List of Major Sub-Components ............................................. 11
3.3.2. Dual Fiber Optic Unit 60-228703 Specification ......................................................................... 11
3.3.3. Dual Fiber Optic Unit 60-228703 System Diagram ................................................................... 12
3.3.3.1. Dual Fiber Optic Unit 60-228703 Alarm Outputs ................................................................... 13
3.3.4. Dual Fiber Optic Unit 60-228703 Front View ............................................................................ 14
3.3.5. Dual Fiber Optic Unit 60-228703 Rear View ............................................................................. 15
3.3.6. Dual Fiber Optic Unit 60-228703 DC Inlet ................................................................................ 16
3.3.6.1. Free Socket for 60-228703 DC Inlet ..................................................................................... 16
3.4.
3.4.1. Dual Redundant PSU 60-091705 List of Major Sub-Components ............................................ 17
3.4.2. Dual Redundant PSU 60-091705 Specification ........................................................................ 17
3.4.3. Dual Redundant PSU 60-091705 System Diagram .................................................................. 18
3.4.4. Dual Redundant PSU 60-091705 Front View ........................................................................... 19
3.4.5. Dual Redundant PSU 60-091705 Rear View ............................................................................ 19
4.
4.1.
4.2.
4.3.
4.3.1 Rack Front View ....................................................................................................................... 23
4.3.2. Rack Rear View ....................................................................................................................... 24
4.3.3. Ports on the Rack Lid ............................................................................................................... 25
4.3.4. 60-228701 Alarm Wiring Schematic ......................................................................................... 26
4.4.
4.4.1. Quadplexer (Base) 60-228706 Major Sub-Components ........................................................... 28
4.4.2. Quadplexer (Base) 60-228706 Specification ............................................................................ 28
4.4.3. Quadplexer (Base) 60-228706 System Diagram ...................................................................... 29
4.4.4. Quadplexer (Base) 60-228706 Front View ............................................................................... 30
4.4.5. Quadplexer (Base) 60-228706 Rear View ................................................................................ 30
4.5.
4.5.1. 8 Ch. Squelch Gated BDA 60-228704 List of Major Sub-Components ..................................... 32
4.5.2. 8 Ch. Squelch Gated BDA 60-228704 Specification ................................................................. 32
4.5.3. 8 Ch. Squelch Gated BDA 60-228704 System Diagram ........................................................... 34
4.5.3.1
4.5.4. 8 Ch. Squelch Gated BDA 60-228704 Front View .................................................................... 36
4.5.5. 8 Ch. Squelch Gated BDA 60-228704 Rear View ..................................................................... 37
4.6.
4.6.1 8 Ch. Squelch Gated BDA 60-228705 List of Major Sub Components ..................................... 39
Introduction .................................................................................................................................... 5
Scope and Purpose of Document................................................................................................... 5
Limitation of Liability Notice ............................................................................................................ 5
Safety Considerations .................................................................................................................... 6
Earthing of Equipment .................................................................................................................... 6
Electric Shock Hazard .................................................................................................................... 6
RF Radiation Hazard ...................................................................................................................... 6
Lifting and other Health and Safety Recommendations .................................................................. 6
Chemical Hazard ........................................................................................................................... 7
Laser Safety ................................................................................................................................... 7
Emergency Contact Numbers ........................................................................................................ 7
60-228801 - WMATA Jackson Graham Building CRAS System ..................................................... 8
60-228801 List of Major Sub-Components ..................................................................................... 8
60-228801 System Diagram ........................................................................................................... 9
Dual Fiber Optic Unit 60-228703 .................................................................................................. 10
Dual Redundant PSU 60-091705 ................................................................................................. 17
60-228701 - WMATA Carmen Turner Facility CRAS System ....................................................... 20
60-228701 List of Major Sub-Components ................................................................................... 21
60-228701 System Diagram ......................................................................................................... 22
60-228701 Rack Elevations ......................................................................................................... 23
Quadplexer (Base) 60-228706 ..................................................................................................... 27
8 Channel Squelch Gated BDA 60-228704 .................................................................................. 31
8 Ch. Squelch Gated BDA 60-228704 Alarm Wiring Diagram............................................... 35
8 Ch. Squelch Gated BDA 60-228705 .......................................................................................... 38
Technical Literature
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WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.6.2. 8 Ch. Squelch Gated BDA 60-228705 Specification ................................................................. 39
4.6.3. 8 Ch. Squelch Gated BDA 60-228705 System Diagram ........................................................... 41
4.6.3.1. 8 Ch. Squelch Gated BDA 60-228705 Alarm Wiring Diagram............................................... 42
4.6.4. 8 Ch. Squelch Gated BDA 60-228705 Front View .................................................................... 43
4.6.5. 8 Ch. Squelch Gated BDA 60-228705 Rear View ..................................................................... 44
4.7.
Splitter/Combiner Unit 60-228702 ................................................................................................ 45
4.7.1. Splitter/Combiner Unit 60-228702 List of Major Sub-Components ............................................ 45
4.7.2. Splitter/Combiner Unit 60-228702 Specification ....................................................................... 45
4.7.3. Splitter/Combiner Unit 60-228702 System Diagram ................................................................. 46
4.7.4. Splitter/Combiner Unit 60-228702 Front View .......................................................................... 47
4.7.5. Splitter/Combiner Unit 60-228702 Rear View ........................................................................... 47
4.8.
Dual Fiber Optic Unit 60-228703 .................................................................................................. 48
4.8.1. Dual Fiber Optic Unit 60-228703 List of Major Sub-Components ............................................. 49
4.8.2. Dual Fiber Optic Unit 60-228703 Specification ......................................................................... 49
4.8.3. Dual Fiber Optic Unit 60-228703 System Diagram ................................................................... 50
4.8.3.1. Dual Fiber Optic Unit 60-228703 Alarm Outputs ................................................................... 51
4.8.4. Dual Fiber Optic Unit 60-228703 Front View ............................................................................ 52
4.8.5. Dual Fiber Optic Unit 60-228703 Rear View ............................................................................. 53
4.9.
Quadplexer (DAS) 60-228706 ...................................................................................................... 54
4.9.1. Quadplexer (DAS) 60-228706 List of Major Sub-Components ................................................. 55
4.9.2. Quadplexer (DAS) 60-228706 Specification ............................................................................. 55
4.9.3. Quadplexer (DAS) 60-228706 System Diagram ....................................................................... 56
4.9.4. Quadplexer (DAS) 60-228706 Front View ................................................................................ 57
4.9.5. Quadplexer (DAS) 60-228706 Rear View ................................................................................. 57
4.10. PSU Housing Shelf 96-300090 .................................................................................................... 58
4.10.1.
4.10.2.
4.10.3.
4.10.4.
4.10.4.1. DC Inlet Free Socket ............................................................................................................ 60
5.10.4.2. Typical DC Inlet Panel Plug .................................................................................................. 60
5.
5.1.
5.2.
5.3.
5.4.
5.5.
5.6.
5.7.
5.8.
5.9.
5.10. Rack Alarm Wiring Diagrams ....................................................................................................... 71
5.10.1.
5.10.2.
5.11 Dual Fiber Optic Unit 60-228703 (Gallery Place Station) .............................................................. 73
5.11.1.
5.11.2.
5.11.3.
5.11.3.1. Dual Fiber Optic Unit 60-228703 Alarm Outputs ................................................................... 76
5.11.4.
5.11.5.
5.12. RF Failover Switch Unit 60-228905 .............................................................................................. 79
5.12.1.
5.12.2.
5.12.3.
5.12.4.
PSU module 96-300091 Specification .................................................................................. 58
PSU Module Chassis 96-300090 Rear View ........................................................................ 59
PSU Module Chassis 96-300090 Alarm Wiring .................................................................... 59
DC Connector Details ........................................................................................................... 60
60-228901 - WMATA Gallery Place Station CRAS System .......................................................... 61
Simplified System Sketch ............................................................................................................. 62
Rack 1 Equipment Layout ............................................................................................................ 63
Rack 2 Equipment Layout ............................................................................................................ 64
Rack 1 Front View ........................................................................................................................ 65
Rack 1 Rear View ........................................................................................................................ 66
Rack 1 elevations showing RF connections ................................................................................. 67
Rack 2 Front View ........................................................................................................................ 68
Rack 2 Rear View ........................................................................................................................ 69
Rack 2 elevations showing RF connections ................................................................................. 70
Rack 1 Alarm Wiring ............................................................................................................. 71
Rack 2 Alarm Wiring ............................................................................................................. 72
Dual Fiber Optic Unit 60-228703 List of Major Sub-Components .......................................... 74
Dual Fiber Optic Unit 60-228703 Specification ..................................................................... 74
Dual Fiber Optic Unit 60-228703 System Diagram ............................................................... 75
Dual Fiber Optic Unit 60-228703 Front View ........................................................................ 77
Dual Fiber Optic Unit 60-228703 Rear View ......................................................................... 78
RF Failover Switch Unit 60-228905 List of Major Sub-Components...................................... 80
RF Failover Switch Unit 60-228905 Specification ................................................................. 81
RF Failover Switch Unit 60-228905 System Diagram ........................................................... 82
RF Failover Switch Unit 60-228905 Alarm Wiring Diagram ................................................... 83
Technical Literature
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WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
5.12.4.1. RF Failover Switch Unit 60-228905 Alarm Outputs ............................................................... 84
5.12.5.
5.12.6.
5.13. Combiner Unit 60-228906 ............................................................................................................ 87
5.13.1.
5.13.2.
5.13.3.
5.14. Combiner Unit 60-228908 ............................................................................................................ 90
5.14.1.
5.14.2.
5.14.3.
5.15. Combiner Unit 60-228909 ............................................................................................................ 93
5.15.1.
5.15.2.
5.15.3.
5.16. Combiner Unit 60-228907 ............................................................................................................ 96
5.16.1.
5.16.2.
5.16.3.
5.17. 16 Ch. DSP U/L Squelch Gate 60-228904 ................................................................................... 99
5.17.1.
5.17.2.
5.17.3.
5.17.3.1. 16 Ch. DSP U/L Squelch Gate 60-228904 Alarm Output .................................................... 103
5.17.4.
5.17.5.
5.18. PSU Housing Shelf 96-300090 .................................................................................................. 106
5.18.1.
5.18.2.
5.18.3.
5.18.4.
5.18.4.1. DC Inlet Free Socket .......................................................................................................... 108
5.18.4.2. Typical DC Inlet Panel Plug ................................................................................................ 108
Appendix A ................................................................................................................................................ 110
A.1. Glossary of Terms used in this document .................................................................................. 110
A.2. Key to Drawing Symbols used in this document ......................................................................... 111
A.3. EC Declaration of Conformity ..................................................................................................... 112
A.4. Waste Electrical and Electronic Equipment (WEEE) Notice ....................................................... 113
A.5. Document Amendment Record .................................................................................................. 114
RF Failover Switch Unit 60-228905 Front View .................................................................... 85
RF Failover Switch Unit 60-228905 Rear View ..................................................................... 86
Combiner Unit 60-228906 List of Major Sub-Components .................................................... 87
Combiner Unit 60-228906 System Diagram ......................................................................... 88
Combiner Unit 60-228906 Front and Rear Views ................................................................. 89
Combiner Unit 60-228908 List of Major Sub-Components .................................................... 90
Combiner Unit 60-228908 System Diagram ......................................................................... 91
Combiner Unit 60-228908 Front and Rear Views ................................................................. 92
Combiner Unit 60-228909 List of Major Sub-Components .................................................... 93
Combiner Unit 60-228909 System Diagram ......................................................................... 94
Combiner Unit 60-228909 Front and Rear Views ................................................................. 95
Combiner Unit 60-228907 List of Major Sub-Components .................................................... 96
Combiner Unit 60-228907 System Diagram ......................................................................... 97
Combiner Unit 60-228907 Front and Rear Views ................................................................. 98
16 Ch. DSP U/L Squelch Gate 60-228904 List of Major Sub-Components ........................ 100
16 Ch. DSP U/L Squelch Gate 60-228904 Specification..................................................... 101
16 Ch. DSP U/L Squelch Gate 60-228904 System Diagram .............................................. 102
16 Ch. DSP U/L Squelch Gate 60-228904 Front View ........................................................ 104
16 Ch. DSP U/L Squelch Gate 60-228904 Rear View ........................................................ 105
PSU module 96-300091 Specification ................................................................................ 106
PSU Module Chassis 96-300090 Rear View ...................................................................... 107
PSU Module Chassis 96-300090 Alarm Wiring .................................................................. 107
DC Connector Details ......................................................................................................... 108
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 4 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
1. Introduction
1.1. Scope and Purpose of Document
This handbook is for use solely with the equipment identified by the Axell Wireless Limited (AWL) Part
Number shown on the front page. It is not to be used with any other equipment unless specifically
authorized by AWL. This is a controlled release document and, as such, becomes a part of the Axell
Wireless Total Quality Management System. Alterations and modification may therefore only be performed
by Axell Wireless.
AWL recommends that the installer of this equipment familiarize themselves with the safety and installation
procedures contained within this document before installation commences.
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 AWL, normally at the company’s repair facility in Chesham, England.
This handbook has been prepared in accordance with BS 4884, and AWL’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 Operations Support Director (see section 2.7.).
This document fulfils the relevant requirements of Article 6 of the R&TTE Directive.
1.2. Limitation of Liability Notice
This manual is written for the use of technically competent operators/service persons. No liability is
accepted by AWL 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, AWL does not warrant the absolute accuracy of the information contained within this manual,
or its completeness, fitness for purpose, or scope.
AWL 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.
Unless specified otherwise, all AWL 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.
Technical Literature
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WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
2. Safety Considerations
2.1. Earthing of Equipment
Equipment 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.
2.2. Electric Shock Hazard
The risk of electrical shocks due to faulty mains driven power supplies While potentially ever
present in any electrical equipment, would be minimized by adherence to good installation
practice and thorough testing at the following stages:
a) Original assembly.
b) Commissioning.
c) Regular intervals, thereafter.
All test equipment must 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.
2.3. RF Radiation Hazard
RF radiation, (especially at UHF frequencies) arising from transmitter outputs connected to
AWL’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 un-terminated. 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 compromise 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.
2.4. Lifting and other Health and Safety Recommendations
Certain items of AWL equipment are heavy and care should be taken when lifting them by
hand. Ensure that a suitable number of personnel, appropriate lifting apparatus and
appropriate personal protective equipment is used especially when installing Equipment
above ground e.g. on a mast or pole and manual handling precautions relevant to items of
the weight of the equipment being worked on must be observed at all times when handling,
installing or dismounting this equipment.
Technical Literature
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WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
2.5. Chemical Hazard
Beryllium Oxide, also known as Beryllium Monoxide, or Thermalox™, is sometimes used in
devices within equipment produced by Axell Wireless 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 Axell Wireless Ltd. for disposal.
To return such equipment, please contact the Operations Support Department, who will give you a Returned
Materials Authorization (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 AWL 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.
2.6. Laser Safety
General good working practices adapted from
EN60825-2: 2004/ EC 60825-2:2004
Do not stare with unprotected eyes or with any unapproved optical device at the fiber ends or
connector faces or point them at other people, Use only approved filtered or attenuating
viewing aids.
Any single or multiple fiber end or ends found not to be terminated (for example, matched, spliced) shall be
individually or collectively covered when not being worked on. They shall not be readily visible and sharp
ends shall not be exposed.
When using test cords, the optical power source shall be the last connected and the first disconnected; use
only approved methods for cleaning and preparing optical fibers and optical connectors.
Always keep optical connectors covered to avoid physical damage and do not allow any dirt/foreign material
ingress on the optical connector bulkheads.
The optical fiber jumper cable minimum bend radius is 3cm; bending to a smaller radius may result in optical
cable breakage and excessive transmission losses.
Caution: The F/O units are NOT weather proof.
2.7. Emergency Contact Numbers
The AWL Operations Support Department can be contacted on:
Telephone +44 (0)1494 777000
Fax. +44 (0)1494 777002
e-mail qa@axellwireless.com
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 7 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3. 60-228801 - WMATA Jackson Graham Building CRAS System
The WMATA Jackson Graham Building CRAS System consists of the following equipment:
Part No. 60-228703 Dual Fiber Optic Unit
Part No. 60-091705 Dual Redundant PSU
The Jackson Graham Building CRAS System provides the Primary Downlink to and receives the Primary
Uplink signal from the Gallery Place Station CRAS System.
The Downlink signal is received from a BTS via a direct connection and is modulated onto an optical signal
which is then fed to the Gallery Place Station CRAS System via fiber optic cables. This Downlink is the
Primary Downlink from the Jackson Graham Building CRAS System to the Gallery Place Station CRAS
System.
Uplink optical signals from the Gallery Place Station CRAS System are received via fiber optic cables,
demodulated to RF and fed to the BTS. This Uplink is the Primary Uplink from the Gallery Place Station
CRAS System to the Jackson Graham Building CRAS System.
Provision is made for a redundant standby path in both the Downlink and Uplink, these are referred to as the
“Main Primary” and “Standby Redundant” paths.
3.1. 60-228801 List of Major Sub-Components
Component
Part
60-228703 Dual Fiber Optic Unit 1
60-091705 Dual Redundant PSU 1
Component Part Description Qty Per
Assembly
Technical Literature
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WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.2. 60-228801 System Diagram
AC INPUT
Date: 15/02/2010
© AWL 2010
Aerial House
Asheridge Road
Chesham
Buckinghamshire
HP5 2QD United Kingdom
Telephone: +44 (0) 1494 777000
Facsimile: +44 (0) 1494 777002
E-Mail: info@axellwireless.com
www.axellwireless.com
TX1 Monitor
Port TX1 D/L I/P
TX2 Monitor
Port TX2 D/L I/P
RX1 Monitor
Port RX1 U/L O/P
RX2 Monitor
Port RX2 U/L O/P
Dual Redundant PSU Shelf 60-091705
Dual Fibre Optic Unit 60-228703
+24V DC
+12V DC
DC I/P
12V DC
Outputs
Jackson Graham Building
CRAS System Diagram
Optical Port 1 “TX”
D/L O/P
Optical Port 2 “TX”
D/L O/P
Optical Port 1 “RX”
U/L I/P
Optical Port 2 “RX”
U/L I/P
Not to Scale
Drawn by: EW/AJS
Issue: 2
A4
Page 1 of 1
Technical Literature
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WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.3. Dual Fiber Optic Unit 60-228703
Dual Fiber Optic Unit 60-228703 is built into a 2U, 19” rack-mount case.
The Main Primary Downlink RF path from the BTS enters the Dual Fiber Optic Unit via the N type port
labeled “TX 1” (annotated “A” in section 3.3.4.) and then passes through a 20dB Directional Coupler 90852420 which couples off a small portion of the signal and feeds it to the N type port labeled “MON -20dB
TX 1” (annotated “B” in section 3.3.4.) which provides a 20dB test/monitor port for the Main Primary
Downlink input.
The Main Primary Downlink path then passes into a Fiber Optic Transmitter Module 20-005401 where the
RF signal is modulated onto a laser and the optical signal thus produced then exits the Dual Fiber Optic Unit
via the SC/APC optical port 1 “TX” (annotated “C” in section 3.3.4.) and is transmitted to the Gallery Place
Station CRAS System via a fiber optic cable link.
The N type port labeled “TX 2” (annotated “D” in section 3.3.4..) is a Downlink input to a separate, parallel,
Standby Redundant Downlink path with its own Directional Coupler, test monitor port (annotated “E” in
section 3.3.4.) and Fiber Optic Transmitter Module. The Optical output from the Standby Redundant
Downlink path exits the Dual Fiber Optic Unit via the SC/APC optical port 2 “TX” (annotated “F” in section
3.3.4.)
Switching between the Main and Standby Redundant Downlink paths is accomplished manually by
disconnecting the Downlink RF input from the “TX 1” port and connecting it to the “TX 2” port, and by
disconnecting the optical Downlink output cable from the SC/APC optical port 1 “TX” and connecting it to the
SC/APC optical port 2 “TX” N.B. The safety precautions noted in section 2 must be observed when
changing from main to standby.
The Main Primary Uplink optical signal from the Gallery Place Station CRAS System enters the Dual Fiber
Optic Unit via the SC/APC optical port 1 “RX” (annotated “G” in section 3.3.4.) and passes into a Fiber Optic
Receiver Module 20-005501 which demodulates the Uplink signal to RF and the Uplink RF signal then
passes through a 20dB Directional Coupler 90-852420 which couples off a small portion of the signal and
feeds it to the N type port labeled “MON -20dB RX 1” (annotated “I” in section 3.3.4.) which provides a 20dB
test/monitor port for the Main Primary Uplink output. The Main Primary Uplink path then exits the Dual Fiber
Optic Unit for the BTS via the N type port labeled “RX 1” (annotated “H” in section 3.3.4.)
The SC/APC optical port 2 “RX” (annotated “J” in section 3.3.4.) is an Uplink input to a separate, parallel,
Standby Redundant Uplink path with its own Fiber Optic Receiver Module, Directional Coupler and
test/monitor port (annotated “L” in section 3.3.4.) The RF output from the standby Uplink path exits the Dual
Fiber Optic Unit for the BTS via the N type port labeled “RX 2” (annotated “K” in section 3.3.4.)
Switching between the Main and Standby Redundant Uplink paths is accomplished manually by
disconnecting the optical Uplink input cable from the SC/APC optical port 1 “RX” and connecting it to the
SC/APC optical port 2 “RX”, and by disconnecting the Uplink RF output from the “RX 1” port and connecting
it to the “RX 2” port. N.B. The safety precautions noted in section 2 must be observed when changing from
main to standby.
Dual Fiber Optic Unit 60-228703 is powered by a 12V DC supply from Dual Redundant PSU 60-091705,
which powers the fiber optic modules within the unit
An alarm system is fitted to Dual Fiber Optic Unit 60-228703, each of the fiber optic modules carries its own
voltage-free contact alarm relay output which are summed at the 15 way “D” panel plug labeled “ALARM”
(annotated “EE” in section 3.3.4.)
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 10 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.3.1. Dual Fiber Optic Unit 60-228703 List of Major Sub-Components
Component
Part
20-001601 12V Dual Relay Board 1
20-005401 Fiber Optic Transmitter Module 2
20-005501 Fiber Optic Receiver Module 2
96-110013 3.15 A Fuse 2
96-200024 DC/DC Converter 2
90-852420 20dB Directional Coupler 4
94-100003 Power Diode 3
Part Description Qty Per
3.3.2. Dual Fiber Optic Unit 60-228703 Specification
PARAMETER SPECIFICATION
RF Downlink
Frequency range
Coupling TX1 to Mon TX1 20 dB±1
Coupling TX2 to Mon TX2 20 dB±1
Optical Downlink
Wavelength 1310nm
TX(A) Optical TX Power 1-3 dBm
TX(B) Optical TX Power 1-3 dBm
Optical Uplink
Wavelength 1550nm
RX(A) Gain >+15 dB
RX(A) Gain Set To 0 dB±0.5
RX(A) Alarm Threshold < -10dBm
RX(B) Gain >+15 dB
RX(A) Gain Set To 0 dB±0.5
RX(B) Alarm Threshold < -10dBm
RF Uplink
Frequency range
Coupling RX1 to Mon RX1 20 dB±1
Coupling RX2 to Mon RX2 20 dB±1
General
Supply Voltage 12V DC or 24V DC
Current consumption < 1.0A @ 24V DC input
Alarm output
Summary volts free dry contact output
(Closed = Normal / Open = Alarm)
**This alarm is not operational when the unit is powered from 12V DC
489.5MHz to 491.0MHz
496.3MHz to 496.7MHz
499.3MHz to 499.7MHz
492.5MHz to 494.0MHz
< 1.5A @ 12V DC input
F/O TX1 contact output Pin 1 & 2
F/O TX2 contact output Pin 3 & 4
F/O RX1 contact output Pin 5 & 6
F/O RX1 contact output Pin 7 & 8
24V DC-DC contact output Pin 9 & 10**
Assembly
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 11 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.3.3. Dual Fiber Optic Unit 60-228703 System Diagram
Port TX1 Main Primary D/L I/P
Port TX2 Standby Redundant D/L I/P
Port RX1 Main Primary U/L O/P
Port RX2 Standby Redundant U/L O/P
Date: 15/02/2010
© AWL 2010
Telephone: +44 (0) 1494 777000
Facsimile: +44 (0) 1494 777002
E-Mail: info@axellwireless.com
www.axellwireless.com
Aerial House
Asheridge Road
Chesham
Buckinghamshire
HP5 2QD
United Kingdom
TX1 Monitor
90-852420
TX2 Monitor
90-852420
RX1 Monitor
90-852420
RX2 Monitor
90-852420
2 x
96-200024
DC
DC
+24 VDC
20-005401
20-005401
20-005501
20-005501
DC
DC
+12 VDC
DC I/P
3 x
94-100003
20-001601
Local Alarm
Dual Fibre Optic Unit 60-228703
System Diagram
(Jackson Graham Building CRAS System)
Optical Port 1 “TX”
Main Primary D/L O/P to
Gallery Place Station CRAS system
Optical Port 2 “TX”
Standby Redundant D/L O/P to
Gallery Place Station CRAS system
Optical Port 1 “RX”
Main Primary U/L I/P from
Gallery Place Station CRAS system
Optical Port 2 “RX”
Standby Redundant U/L I/P from
Gallery Place Station CRAS system
Not to Scale
Drawn by: EW/AJS
Issue: 3
A4
Page 1 of 1
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 12 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.3.3.1. Dual Fiber Optic Unit 60-228703 Alarm Outputs
15 pin “D” panel plug “ALARM”, local alarm output to Krone terminal block on rack (annotated “EE” in
section 3.3.3.)
Dry Contact Outputs (Closed = Normal / Open = Alarm)
F/O TX 1 (main), contact output Pin 1 & 2
F/O TX 2 (standby), contact output Pin 3 & 4
F/O RX 1 (main), contact output Pin 5 & 6
F/O RX 2 (standby), contact output Pin 7 & 8
24V DC>DC contact output Pin 9 & 10
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 13 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.3.4. Dual Fiber Optic Unit 60-228703 Front View
C A
G HI
B
1
2
MON
-20dB TX 1
MON
-20dB TX 2
TX RX
TX RX
MON
-20dB RX 1
MON
-20dB RX 2
TX 1 RX 1
TX 2 RX 2
POWER
ALARM
EF
D
L KJ M
A N type port “TX1”, Main Primary RF D/L I/P from BTS
B N type port “MON -20dB TX 1”, 20dB test/monitor port coupled from D/L input to port “TX1”
C SC/APC optical port 1 “TX”, Main Primary optical D/L O/P to Gallery Place Station CRAS System
D N type port “TX2”, Standby Redundant RF D/L I/P from BTS
E N type port “MON -20dB TX 2”, 20dB test/monitor port coupled from D/L input to port “TX2”
F SC/APC optical port 2 “TX”, Standby Redundant optical D/L O/P to Gallery Place Station CRAS System
G SC/APC optical port 1 “RX”, Main Primary optical U/L I/P from Gallery Place Station CRAS System
H N type port “RX1”, Main Primary RF U/L O/P to BTS
I N type port “MON -20dB RX 1”, 20dB test/monitor port coupled from U/L output to port “RX1”
J SC/APC optical port 2 “RX”, standby optical U/L I/P from Gallery Place Station CRAS System
K N type port “RX2”, Standby Redundant RF U/L O/P to BTS
L N type port “MON -20dB RX 2”, 20dB test/monitor port coupled from U/L output to port “RX2”
M Status Indicators for F/O TX Module 1 (Main Primary D/L to Gallery Place Station CRAS System)
N Green LED “POWER”, Fiber Optic TX Power On indicator illuminated during normal operation
O Green LED “ALARM”, Fiber Optic TX Alarm indicator extinguished during alarm state
P Status Indicators for F/O TX Module 2 (Standby Redundant D/L to Gallery Place Station CRAS System)
Q Green LED “POWER”, Fiber Optic TX Power On indicator illuminated during normal operation
R Green LED “ALARM”, Fiber Optic TX Alarm indicator extinguished during alarm state
S Status Indicators for F/O RX Module 1 (Main Primary U/L from Gallery Place Station CRAS System)
T Green LED “POWER”, Fiber Optic RX Power On indicator illuminated during normal operation
U Green LED “ALARM”, Fiber Optic RX Alarm indicator extinguished during alarm state
V Fiber Optic RX RF gain adjustment
W Status Indicators for F/O RX Module 2 (Standby Redundant U/L from Gallery Place Station CRAS
System)
X Green LED “POWER”, Fiber Optic RX Power On indicator illuminated during normal operation
Y Green LED “ALARM”, Fiber Optic RX Alarm indicator extinguished during alarm state
Z Fiber Optic RX RF gain adjustment
AA DC input (12V or 24V)
BB 3.15A Fuse for 24V DC input
CC 3.15A Fuse for 12V DC input
DD Red LED “DC/DC FAIL” illuminated in alarm state (DC/DC convertor failure)
EE 15 pin “D” panel plug “ALARM” local alarm output
N
O
S
TX 1 RX 1 TX 2 RX 2
POWER
ALARM
GAIN ADJ
T V
POWER
ALARM
P
U
POWER
ALARM
GAIN ADJ
X Z
Y
RQW
+24/12V DC
AA
24V T3.15A12V T3.15A
ALARM
BBCC
DC/DC FAIL
EE
DD
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 14 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.3.5. Dual Fiber Optic Unit 60-228703 Rear View
A Earthing connection
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 15 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.3.6. Dual Fiber Optic Unit 60-228703 DC Inlet
The Dual Fiber Optic Unit 60-228703 is a standard module used in three different locations: the Jackson
Graham Building, the Carmen Turner Facility and the Gallery Place Station. The DC supply voltage
available at the Carmen Turner Facility and the Gallery Place Station locations is 24V While the DC supply
at the Jackson Graham Building is 12V so to enable the provision of a standardized unit the Dual Fiber
Optic Unit 60-228703 is configured to operate from both 24V and 12V DC supplies
A Pin 3, 12V, (Red Wire)
B Pin 2, 0V, (Black wire)
C Pin 1, not connected (used for 24V I/P)
D Guide keyway
E Fuse access
3.3.6.1. Free Socket for 60-228703 DC Inlet
A Pin 3, 12V (Red Wire)
B Pin 2, 0V (Black wire)
C Pin 1, not connected
D Guide key
E Locking/release lug
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 16 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.4. Dual Redundant PSU 60-091705
Dual Redundant PSU 60-091705 is built into a 4U, 19” rack-mount case.
The PSU case houses two mains driven PSU modules whose outputs are parallel combined using high
power, low volt-drop diodes. This means that if either supply fails the other will seamlessly take over all
power provision until the fault is rectified. Both supplies’ outputs are monitored and an alarm will become
active should either module fail.
3.4.1. Dual Redundant PSU 60-091705 List of Major Sub-Components
Component
Part
20-001601 12V Dual Relay Board 1
94-100004 Dual Diode Assembly 1
96-300051 100W PSU Module 2
96-920022 3A Circuit Breaker 2
Part Description Qty Per
Assembly
3.4.2. Dual Redundant PSU 60-091705 Specification
PARAMETER SPECIFICATION
Input 115/230V AC 50/60Hz (nominal, single port)
Outputs 6 x 12V DC at 16A (max. total)
Indicators
Alarm Interface 9-way ‘D’ connector
PSU1 alarm pins 1 & 2
PSU2 alarm Pins 1 & 4
Green ‘DC on’ LED
Red LED (alarm1)
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 17 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.4.3. Dual Redundant PSU 60-091705 System Diagram
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 18 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
3.4.4. Dual Redundant PSU 60-091705 Front View
POWER
ALARM
A B
A Green LED “POWER”, illuminated during normal operation
B Red LED “ALARM”, illuminated during alarm condition
3.4.5. Dual Redundant PSU 60-091705 Rear View
A AC Mains input
B Trip switch for PSU module 1
C Trip switch for PSU module 2
D 12V DC outputs
E 9 way “D” panel plug, alarm output
F Earthing connection
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 19 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4. 60-228701 - WMATA Carmen Turner Facility CRAS System
The WMATA Carmen Turner Facility CRAS System consists of the following equipment mounted in a 41U,
19” equipment housing rack
Part No. 96-300090 PSU Housing Shelf
Contains Qty. 2, Part No. 96-300091 PSU Modules
Part No. 60-228703 Dual Fiber Optic Unit
Part No. 60-228702 Splitter/Combiner Unit
Part No. 60-228706 Quadplexer (Base)
Part No. 60-228706 Quadplexer (DAS)
Part No. 60-228704 8 Ch. Squelch Gated BDA (Band 1)
Part No. 60-228705 8 Ch. Squelch Gated BDA (band 2)
The Carmen Turner Facility CRAS System provides the Redundant Downlink to and receives the
Redundant Uplink signal from the Gallery Place Station CRAS System. In addition, the Carmen Turner
Facility CRAS System also provides a Downlink to and receives an Uplink from a local Distributed Antenna
System within the Carmen Turner Facility building
Downlink RF from a remote off-air BTS is received and the signal is split into two paths; each path consists
of a pair of frequencies, Downlink and Uplink, within the overall operating passband which can be processed
together While allowing the easy rejection of opposing frequencies. For the sake of convention, within the
Carmen Turner Facility CRAS System, the descriptions “Band 1” and “Band 2” will be used to refer to the
two Downlink and Uplink pairs according to the following table:
Band 1
Band 2
The Downlink signals are then processes utilizing SDR technology to define the eight operating channels.
and then amplified. The two paths are re-combined and then fed to the distributed antenna system.
RF Uplink from the distributed antenna system is split into two paths, for the reasons outlined above, which
are processed utilizing SDR technology to define the eight operating channels and amplified. The two paths
are then re-combined and then fed to the BTS.
In the Downlink path the signal is split by means of a directional coupler and fed to a fiber optic transmitter
which modulates the RF signal on to an optical signal which is then fed to the Gallery Place Station CRAS
System.
Optical Uplink signals from the Gallery Place Station CRAS System are received and demodulated to RF
and coupled onto the Uplink path to the remote off-air BTS.
Provision is made for a redundant standby path in both the Downlink and Uplink to and from the Gallery
Place Station CRAS System; these are referred to as the “Main Redundant” and “Standby Redundant”
paths.
Downlink 489.5MHz to 491.0MHz
Uplink 492.5MHz to 494.0MHz
Downlink 496.3MHz to 496.7MHz
Uplink 499.3MHz to 499.7MHz
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 20 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.1. 60-228701 List of Major Sub-Components
Component
Part
60-228706 Quadplexer (Base) 1
60-228704 8 Ch. Squelch Gated BDA (Band 1) 1
60-228705 8 Ch. Squelch Gated BDA (band 2) 1
60-228702 Splitter/Combiner Unit 1
60-228703 Dual Fiber Optic Unit 2
60-228706 Quadplexer (DAS) 1
96-300090 PSU Housing Shelf 1
96-300091 PSU Module 2
97-500424 41U 19" Equipment Rack 1
Component Part Description Qty Per
Assembly
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 21 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.2. 60-228701 System Diagram
H56
Controller
Alarm/Battery
System Monitoring Point
PC Control
Alarm
H56
Controller
Alarm/Battery
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 22 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.3. 60-228701 Rack Elevations
4.3.1 Rack Front View
A PSU Housing Shelf 96-300090
B Dual Fiber Optic Unit 60-228703
C Splitter/Combiner Unit 60-228702
D Quadplexer (Base) 60-228706
E Quadplexer (DAS) 60-228706
F 8 Ch. Squelch Gated BDA 60-228704
G 8 Ch. Squelch Gated BDA 60-228705
H 1U Blanking Panels
I 5U Blanking Panel
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 23 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.3.2. Rack Rear View
A Position of PSU Housing Shelf 96-300090
B Dual Fiber Optic Unit 60-228703
C Splitter/Combiner Unit 60-228702
D Quadplexer (Base) 60-228706
E Quadplexer (DAS) 60-228706
F 8 Ch. Squelch Gated BDA 60-228704
G 8 Ch. Squelch Gated BDA 60-228705
H Cable gland for AC mains wiring
I Terminal blocks for AC input connection
J AC circuit breaker
K Krone terminal block for alarm outputs from components shelves
L N type ports connections to/from BTS and DAS
M Cable gland for optical fiber links to/from Gallery Place Station CRAS System
N 15 way “D” panel plugs for alarm outputs
O Position of rack cooling fans
P Terminal blocks for AC distribution
Q Rack earthing connection
L M N
A
K
P
B
C
D
E
F
G
Q
H
O
I
J
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 24 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.3.3. Ports on the Rack Lid
A N type port “BASE PORT”, D/L I/P from and U/L O/P to BTS
B Cable gland for optical fiber links to/from Gallery Place Station CRAS System
C N type port “DAS PORT”, D/L O/P to and U/L I/P from DAS
D Cable gland for AC mains wiring
E 15 way “D” panel plug “PA & PSU ALARM O/P” alarm output from system amplifiers
and PSU modules
F 15 way “D” panel plug “F/O ALARM O/P” alarm output from fiber optic modules
G Rack earthing connection
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 25 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.3.4. 60-228701 Alarm Wiring Schematic
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 26 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.4. Quadplexer (Base) 60-228706
Quadplexer (Base) 60-228706 is built into a 4U, 19” rack-mount case
Downlink RF from the BTS enters the rack via the N type connector labeled “BASE PORT” on the rack lid
(annotated “A” in section 4.3.3.) and the signal is fed to the N type port on the Quadplexer front panel
labeled “BASE” (annotated “A” in section 4.4.4.). The signal path passes through 30dB Directional Coupler
90-852330 which is used to provide a test/monitor port for the Uplink signal and then the signal path is split
into two branches, Band 1 and Band 2, by means of critical harness.
The Band 1 branch is then further split by critical harness into Uplink and Downlink paths and the Band 1
Downlink path passes through a Bandpass Filter 02-016801 which is tuned to pass the Band 1 Downlink
passband of 489.5MHz to 491.0MHz and to reject out-of-band signals and noise.
The Band 2 branch is also further split by critical harness into Uplink and Downlink paths and the Band 2
Downlink path passes through a Bandpass Filter 02-013401 which is tuned to pass the Band 2 Downlink
passband of 496.3MHz to 496.7MHz and to reject out-of-band signals and noise.
The two Downlink paths, Band 1 and Band 2 then exit the Quadplexer for their respective BDAs; the Band 1
Downlink exits the shelf for 8 Ch. Squelch Gated BDA 60-228704 via the N type port labeled “A” (annotated
“B” in section 4.4.4.) and the Band 2 Downlink exits the shelf for 8 Ch. Squelch Gated BDA 60-228705 via
the N type port labeled “C” (annotated “C” in section 4.4.4.)
The Band 1 Uplink from 8 Ch. Squelch Gated BDA 60-228704 enters the shelf via the N type port labeled
“B” (annotated “D” in section 4.4.4.) and passes through a Bandpass Filter 02-013401 which is tuned to
pass the Band 1 Uplink passband of 492.5MHz to 494.0MHz and to reject out-of-band signals and noise.
The Band 1 Uplink path is then combined with that of the Band 1 Downlink path by means of critical
harness.
The Band 2 Uplink from 8 Ch. Squelch Gated BDA 60-228705 enters the shelf via the N type port labeled
“D” (annotated “E” in section 4.4.4.) and passes through a Bandpass Filter 02-013401 which is tuned to
pass the Band 2 Uplink passband of 499.3MHz to 499.7MHz and to reject out-of-band signals and noise.
The Band 2 Uplink path is then combined with that of the Band 2 Downlink path by means of critical harness
and the Band 1 and Band 2 Uplink paths are then combined again by means of critical harness and the
combined Uplink path passes through the 30dB Directional Coupler 90-852330 which couples off a small
portion of the Uplink signal and feeds it to the N type port labeled “MONITORING” (annotated “F” in section
4.4.4.) providing a 30dB test/monitor port for the Uplink signal. The main Uplink signal then exits the shelf
via the N type port labeled “BASE” (annotated “A” in section 4.4.4.) and the signal is fed to the N type
connector labeled “BASE PORT” on the rack lid (annotated “A” in section 4.3.3.).
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 27 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.4.1. Quadplexer (Base) 60-228706 Major Sub-Components
Component
Part
02-013401 Bandpass Filter 2
02-016801 Bandpass Filter 2
90-852330 30dB Directional Coupler 1
Part Description Qty Per
Assembly
4.4.2. Quadplexer (Base) 60-228706 Specification
PARAMETER SPECIFICATION
Band 1 D/L (Base port to port A)
Frequency Range 489.5-491.0 MHz
Rejection 492.5-494.0 MHz > 65 dB
Insertion Loss ≤ 3.0 dB
Band 1 U/L (port B to Base port)
Frequency Range 492.5-494.0 MHz
Rejection 489.5-491.0 MHz > 40 dB
496.3-496.7 MHz > 65 dB
Insertion Loss ≤ 3.0 dB
Port B to Monitoring port 33dB ±1 dB
Band 2 D/L (Base port to port C)
Frequency Range 496.3-496.7 MHz
Rejection 492.5-494.0 MHz > 65 dB
499.3-499.7 MHz > 60 dB
Insertion Loss ≤ 3.0 dB
Band 2 U/L (port D to Base port)
Frequency Range 499.3-499.7 MHz
Rejection 496.3-496.7 MHz > 75 dB
Insertion Loss ≤ 3.0 dB
Port D to Monitoring port 33dB ±1 dB
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 28 of 114
WMATA CRCS Redundant Antenna System
General Overview
Axell Wireless Limited
4.4.3. Quadplexer (Base) 60-228706 System Diagram
30dB coupled from U/L O/P
Monitor Port
D/L I/P from BTS
U/L O/P to BTS
90-852330
30 dB
02-016801
489.5-491.0 MHz
02-016801
492.5-494.0 MHz
02-013401
496.3-496.7 MHz
02-013401
499.3-499.7 MHz
Port A, Band 1 D/L O/P to
8 Ch. Squelch Gated BDA 60-228704
Port B, Band 1 U/L I/P from
8 Ch. Squelch Gated BDA 60-228704
Port C, Band 2 D/L O/P to
8 Ch. Squelch Gated BDA 60-228705
Port D, Band 2 U/L I/P from
8 Ch. Squelch Gated BDA 60-228705
Date: 19/11/2009
© AWL 2009
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 29 of 114
Aerial House
Asheridge Road
Chesham
Buckinghamshire
HP5 2QD United Kingdom
Telephone: +44 (0) 1494 777000
Facsimile: +44 (0) 1494 777002
E-Mail: info@axellwireless.com
www.axellwireless.com
Quadplexer (Base) 60-228706
System Diagram
WMATA CRCS Redundant Antenna System
General Overview
Not to Scale
Drawn by: EW/AJS
Issue: 1
A4
Page 1 of 1
Axell Wireless Limited
4.4.4. Quadplexer (Base) 60-228706 Front View
A N type port “BASE”, Downlink input from and Uplink output to BTS
B N type port “A”, Band 1 Downlink output to 8 Ch. Squelch Gated BDA 60-228704
C N type port “C”, Band 2 Downlink output to 8 Ch. Squelch Gated BDA 60-228705
D N type port “B”, Band 1 Uplink input from 8 Ch. Squelch Gated BDA 60-228704
E N type port “D”, Band 2 Uplink input from 8 Ch. Squelch Gated BDA 60-228705
F N type port “MONITORING”, 30dB test/monitor port coupled from the Uplink O/P path
4.4.5. Quadplexer (Base) 60-228706 Rear View
A Earthing connection
Technical Literature
Document Number 60-228701HBK Issue No. 3 Date 28/05/2010 Page 30 of 114
WMATA CRCS Redundant Antenna System
General Overview
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