UHF Dual Band Line Amplifier Product Description and User’s Manual Product Part No. 55-227901 Axell Wireless Limited Head Office: 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 Limited Technical Literature Document Number 55-227901HBK UHF Dual Band Line Amplifier Issue No.
Copyright © 2014 Axell Wireless Ltd All rights reserved. No part of this document may be copied, distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language without the prior written permission of Axell Wireless Ltd. The manufacturer has made every effort to ensure that the instructions contained in this document are adequate and free of errors and omissions.
About This Manual This Product Manual provides the following information: Description of the Amplifier Procedures for setup, configuration and checking the proper operation of the Amplifier Maintenance and troubleshooting procedures Users This Product Manual is intended for experienced technicians and engineers. It is assumed that the customers installing, operating, and maintaining Axell Wireless Amplifiers are familiar with the basic functionality of Amplifiers.
Compliance with FCC FCC Part 15 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. 2. This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation. If not installed and used in accordance with the instructions, this equipment generates, uses and can radiate radio frequency energy.
Radiating Antenna Installation CAUTION! This Equipment is designed as an in-line Radiating Cable booster and must not be used as a Class B Off-Air repeater. Installation of a radiating cable antenna must comply with the FCC RF exposure requirements. The radiating cable used for this transmitter must be mounted on permanent structures. The FCC regulations mandate that the EIRP of type B signal boosters should not exceed 5W.
General Safety Warnings Concerning Use of This System Always observe standard safety precautions during installation, operation and maintenance of this product. Only a qualified and authorized personnel should carry out adjustment, maintenance or repairs to the components of this equipment. NOTE: Please refer to Axell Wireless for additional information and for requests for notifications to authorities. Throughout this manual, there are "Caution" warnings.
Table of Contents 1. Antenna Specifications and Installation Criteria ........................................................................... 8 1.1. Base (Donor) Input................................................................................................................... 8 1.1.1. Required Input Information ............................................................................................... 8 1.2. Service Antenna Requirements .........................................................
1. Antenna Specifications and Installation Criteria WARNING!!! o o o o This Dual Band Line Amplifier is specifically designed for in-line radiating cable operation and must not be directly connected to an off air radiating antenna. The installer is held accountable for implementing the rules required for deployment. Good engineering practice must be used to avoid interference. Output power should be reduced to solve any IMD interference issues.
1.2. Service Antenna Requirements WARNING!!! a. The installer is held accountable for implementing the rules required for deployment. b. Good engineering practice must be used to avoid interference. c. Output power should be reduced to solve any IMD interference issues” This product is designed as a Line Amplifier repeater to extend the signal coverage distance of a radiating cable system and must not be used as an off air repeater. 1.2.1.
2. Pre-Installation Requirements 2.1. Safety Guidelines Before installing the Line Amplifier, review the following safety information: Follow all local safety regulations when installing the Line Amplifier. Only qualified personnel are authorized to install and maintain the Line Amplifier. Ground the Line Amplifier with the grounding bolt located on the underside of the Line Amplifier Do not use the grounding bolt to connect external devices. Follow Electro-Static Discharge (ESD) precautions.
3. WMATA Dual Band UHF Line Amplifier 55-227901 3.1. Equipment Overview WMATA Dual Band UHF Line Amplifier 55-227901 is a Bi-directional Line Amplifier designed for Radiating Cable signal extension. The equipment consists of four signal paths (2 downlink and 2 uplink) to provide dual band operation. The two Downlink bands are: 489.5 MHz – 491.0 MHz & 496.0 MHz – 496.9 MHz. The two Uplink bands are: 492.5 MHz – 494.0 MHz & 499.0 MHz – 499.9 MHz.
Axell Wireless Limited Technical Literature Document Number 55-227901HBK Issue No. 4 Date 23/06/2014 © Axell Wireless 2014 499.0 – 499.9MHz 22 492.5 – 494.0MHz Duplexer 1513001266 Isolator 08-004014 1 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 Date: 18 February 2014 Downlink Input Uplink Output 496.0 – 496.9MHz 2 489.5 – 491.
3.4. Component position number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Table of Components by Position Number Component description “Base” port Isolator “Base” Downlink Duplexer 489.5 MHz - 491.0MHz D/L path Variable Switched Attenuator 0-30dB 489.5 MHz - 491.0MHz D/L path Low Noise Amplifier 28dB Gain 489.5 MHz - 491.0MHz D/L path AGC Attenuator Module 489.5 MHz - 491.0MHz D/L path Power Amplifier 20dB Gain 489.5 MHz - 491.
3.5. Exploded schematic showing Downlink RF path and components #6 #13 #5 #27 #19 #11 #7 #25 #21 #4 #17 #10 #23 #12 #3 #18 #9 #24 #14 #15 #8 20dB Test Port #16 #1 #22 Date: 18 February 2014 © AWL 2014 WIRELESS #2 D/L O/P U/L I/P #26 axell D/L I/P U/L O/P 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.
3.6. Exploded schematic showing Uplink RF path and components #6 #13 #5 #27 #19 #11 #7 #25 #21 #4 #17 #10 #23 #12 #3 #18 #9 #24 #14 #15 #8 20dB Test Port #16 Date: 18 February 2014 © AWL 2014 WIRELESS #1 #22 #2 D/L O/P U/L I/P #26 axell D/L I/P U/L O/P 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.
3.7. Front View A B C D E Green LED “POWER ON” illuminated during normal operating conditions Red LED “ALARM” illuminated during alarm conditions Door locks Lifting handles FCC Compliance label Axell Wireless Limited Technical Literature Document Number 55-227901HBK UHF Dual Band Line Amplifier Issue No.
3.8. Side Views A B C D E F G Common RF port D/L I/P and U/L O/P, “Base” port Common RF port D/L O/P and U/L I/P, “Mobile” port 20dB test/monitor port 3 Pole panel plug, AC Input 6 Pole panel plug, Alarm Output Grounding connection Position of wall mount brackets (not fitted at time of photography) Axell Wireless Limited Technical Literature Document Number 55-227901HBK UHF Dual Band Line Amplifier Issue No.
3.9. A B C D E F G H I J K L M N O P Q Interior Picture - Downlink Path Common RF port D/L I/P and U/L O/P, “Base” port “Base” port Isolator “Base” port Downlink Duplexer - position of, behind panel 489.5 MHz - 491.0MHz Downlink path Variable Attenuator 496.0 MHz - 496.9MHz Downlink path Variable Attenuator Downlink paths Low Noise Amplifiers and AGC Detector and Attenuator Modules 489.5 MHz - 491.0MHz Downlink path Power Amplifier 496.0 MHz - 496.
3.10. A B C D E F G H I J K L M N O P Q Interior Picture - Uplink Path Common RF port U/L I/P and D/L O/P, “Mobile” port 20dB test/monitor port 20dB Non-directional Tap “Mobile” port Isolator “Mobile” port Uplink Duplexer - position of, behind panel 492.5 MHz - 494.0MHz Uplink path Variable Attenuator 499.0 MHz - 499.9MHz Uplink path Variable Attenuator Uplink paths Low Noise Amplifiers and AGC Detector and Attenuator Modules 492.5 MHz - 494.0MHz Uplink path Low Power Amplifier 499.0 MHz - 499.
3.11. Specification Parameter Specification Downlink Frequency Range Band 1 Frequency Range Band 2 Maximum Gain Gain Adjustment (manual adjustment) Output Test Port Maximum RF Output Power In-Band Spurious Noise (30kHz B/W) Uplink Frequency Range Band 1 Frequency Range Band 2 Maximum Gain Gain Adjustment (manual adjustment) Maximum RF Output Power Noise Figure In-Band Spurious Noise (30kHz B/W) General Case Size H x W x D Case Material Case Finish AC Supply Voltage RF Connectors 489.5 – 491.0MHz 496.
4. Installation – General Notes 4.1. General Remarks When this equipment is initially commissioned, please keep a record of the initial set-up parameters, this will help both the installation personnel and Axell Wireless should these figures be needed for future reference or diagnosis. The procedure for installing and commissioning an Axell Wall Mount Line Amplifier is generally as follows: 1) Secure the Line Amplifier in the chosen wall position.
4.4. Commissioning Once all connections are made the equipment is ready for commissioning. To commission the system the test equipment detailed in Section 5.2. will be required. Using the system diagrams and the end-to-end test specification (supplied with the equipment), the equipment should be tested to ensure correct operation. Typical RF levels that are not listed in the end-to-end specification, such as input levels to the fibre transmitters are detailed in the maintenance section of this manual.
5. Maintenance 5.1. Fault Finding 5.1.1. Quick Fault Checklist All Axell equipment is individually tested to specification prior to despatch. Failure of this type of equipment is not common. Experience has shown that a large number of fault conditions relating to tunnel installations result from simple causes often occurring as result of transportation, unpacking and installation.
5.1.3. Downlink Confirm that there is a signal at the expected frequency and RF level from the proceeding cable. If this is not present then the fault may lay outside the system. If a signal is not received at the output it will be necessary to follow the downlink path through the system to find a point at which the signal is lost. The expected downlink output for the given input can be found in the end-to-end test specification. 5.1.4.
5.1.7. Service Support Advice and assistance with maintaining and servicing this system are available by contacting Axell Wireless Ltd., see Contact Information. NOTE Individual modules are not intended to be repaired on site and attempts at repair will invalidate active warranties. Company policy is that individual modules should be repaired by replacement. Axell Wireless Ltd. maintains a level of stock of most modules which can usually be despatched at short notice to support this policy. 5.2.
5.3. Care of Modules 5.3.1. General Comments Many of the active modules contain semiconductor devices utilising MOS technology, which can be damaged by electrostatic discharge. Correct handling of such modules is mandatory to ensure their long-term reliability. To prevent damage to a module, it must be withdrawn and inserted with care. The module may have connectors on its underside, which might not be visible to the service operative. 5.3.2.
When the heatsink has been removed, the amplifier may be unscrewed from the main casing by its four corner fixings and gently withdrawn. Fitting a new power amplifier module will be the exact reverse of the above. Note: Do not forget to apply fresh heatsink compound to the heatsink/main case joint and also between the amplifier and the main case. 5.3.5. Low Power Amplifier Replacement (general procedure) Disconnect the mains power supply and disconnect the 24V dc supply connector for the LPA.
Appendix A A.1.
A.2. Key to Drawing Symbols used in this document Axell Wireless Limited Technical Literature Document Number 55-227901HBK UHF Dual Band Line Amplifier Issue No.
A.3. Document Amendment Record Issue No. 1 Date 10/01/2014 Incorporated by AJS 2 18/02/2014 AJS Issue 3 17/06/2014 AJS FCC compliance changes Axell Wireless Limited Technical Literature Document Number 55-227901HBK Section Amended Reason for new issue Draft UHF Dual Band Line Amplifier Issue No.
