Dual Band Fibre Fed BDA User Handbook For General Dynamics Information Technology Inc. AWL Works Order Q119830 AWL Product Part No. 60-232301 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.
Table of Contents 1. Introduction................................................................................................................................ 3 1.1. Scope and Purpose of Document ........................................................................................ 3 1.2. Limitation of Liability Notice.................................................................................................. 3 2. Safety Considerations..............................................................
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 authorised 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.
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.
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).
3. Dual Band Fibre Fed BDA 60-232301 Dual Band Fibre Fed BDA 60-232301 is built into a wall-mounted, environmentally protected (IP65) aluminium alloy case; RF ports and connectors are also IP65 standard making the entire enclosure and connecting ports weatherproof. Handles are provided for carrying the unit and the door is fitted with locks. A supply isolator switch is fitted inside the unit and there are Power On and Alarm indicators on the outside of the door.
After leaving the attenuator the UHF Downlink passes through AGC Attenuator Module 17-016401 (annotated “J” in section 3.6.2.) which is controlled by UHF Downlink AGC Detector Module 17019802 and is capable of providing up to 15dB of signal attenuation. The UHF Downlink then passes through two stages of amplification; the first stage is composed of two Low Noise Amplifiers 11-007402, arranged in parallel (each providing 30dB of signal gain).
After leaving the Power Amplifiers the 800MHz Downlink signal path passes through an AGC Detector Module 17-019801 (annotated “S” in section 3.6.3.) which regulates the gain level by adjusting AGC Attenuator Module 17-016401; The AGC Detector module monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the AGC Attenuator Module to limit the RF output to the (factory set) threshold.
After leaving the AGC Detector Module the UHF Uplink passes through a second Crossband Coupler 07-004814 (annotated “P” in sections 3.6.4. & 3.6.5.) which combines the UHF Uplink with the 800MHz band Uplink path; the combined signal then passes through a 3dB Splitter/Combiner 05002901 (annotated “Q” in sections 3.6.4. & 3.6.5.) which splits the combined Uplink signal into two equal paths. One path is fed to the F/O Transceiver Module J1361001 (annotated “R” in sections 3.6.4. & 3.6.5.
One path is fed to the F/O Transceiver Module J1361001 (annotated “R” in sections 3.6.4. & 3.6.5.) for the primary optical link. The F/O Transceiver Module modulates the RF signal onto a laser and the primary optical uplink exits the BDA for the master site via the SC/APC optical port annotated “T” in sections 3.6.4. & 3.6.5. The second branch of the Uplink path is fed to the F/O Transceiver Module J1361001 (annotated “S” in sections 3.6.4. & 3.6.5.) for the secondary optical link.
3.1.
3.2.
Axell Wireless Limited Dual Band Fiber Fed BDA 60-232301 Technical Literature Document Number 60-232301HBK Issue No. 2 Date 22/12/2009 © AWL 2009 Date: 14/12/2009 96-900018 J1361001 J1361001 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.
3.4.
3.5. 60-232301 Side Views LH Side RH Side ANT. FACING MOBILE B E 110/230V AC A A B C D E C ALARM D Cable gland for entry of fibre optic cable link to master site N type port “ANT FACING MOBILE” D/L O/P to and U/L I/P from DAS 3 pole panel plug “110/130V AC”, AC input 6 pole panel plug “ALARM”, Summary alarm output Earthing connection Axell Wireless Limited Dual Band Fiber Fed BDA 60-232301 Technical Literature Document Number 60-232301HBK Issue No.
3.6. 60-232301 Interior Views 3.6.1.
3.6.2.
3.6.3.
3.6.4.
3.6.5.
3.6.6.
M 12V Relay PCB Assemblies 80-008901 N Multi-Voltage DC/DC Converter J1421001 Axell Wireless Limited Dual Band Fiber Fed BDA 60-232301 Technical Literature Document Number 60-232301HBK Issue No.
4. Installation – General Notes 4.1. General Remarks When this equipment is initially commissioned, please use the equipment set-up record sheet in Appendix B. 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 Wireless Wall Mount BDA is generally as follows: 1. Secure the BDA in the chosen wall position. 2.
4.5. 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. On initial power up the system alarm indicators on the front door of the equipment should be checked.
5. Maintenance – General Notes 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 strength from the base station. If this is not present then the fault may lay outside the system. To confirm this, inject a downlink frequency signal from a known source at the master site BTS input and check for output at the remote site feeder output. If a signal is not received at the output it will be necessary to follow the downlink path through the system to find a point at which the signal is lost.
5.2 Tools & Test Equipment The minimum tools and test equipment needed to successfully service this Axell Wireless product are as follows:Spectrum analyser Signal Generator Attenuator Test Antenna Optical Power Meter Digital multi-meter Test cable x 2 Test cable x 2 Hand tools 5.3. 100kHz to 2GHz (Dynamic range = 90dB).
5.3.4. Power Amplifiers Replacement (general procedure) 1) Remove power to the unit. (Switch off at mains/battery, or remove DC in connector) 2) Remove alarm wires from alarm screw terminal block or disconnect multi-way alarm connector. 3) Carefully disconnect the RF input and output coaxial connectors (usually SMA) If alarm board removal is not required, go to step 5.
5.3.6. Module Transportation To maintain the operation, performance and reliability of any module it must be stored and transported correctly. Any module not installed in a whole system must be kept in an anti-static bag or container. These bags or containers are normally identified by being pink or black, and are often marked with an ESD label. Any module sent back to Axell Wireless for investigation/repair must be so protected.
Appendix A A.1. Glossary of Terms used in this document Repeater or Cell Enhancer Band Selective Repeater Channel Selective Repeater AC AGC BBU BDA BTS B/W CEMS C/NR DAS DC Downlink (D/L) F/O GND ID I/P LCX LED LNA LPA Mobile(s) MOU MTBF N/A N/C (of Relays) N/O (of Relays) OFR OIP3 O/P P1dB PA RF RHNC RSA RX SDR S/N TX Uplink (U/L) UPS VSWR WDM Date Format A Radio Frequency (RF) amplifier which can simultaneously amplify and re-broadcast Mobile Station (MS) and Base Transceiver Station (BTS) signals.
A.2. Key to Drawing Symbols used in this document Axell Wireless Limited Dual Band Fiber Fed BDA 60-232301 Technical Literature Document Number 60-232301HBK Issue No.
A.3. EC Declaration of Conformity In accordance with BS EN ISO/IEC 17050-1&-2:2004 Axell Wireless Limited Aerial House Asheridge Road Chesham Buckinghamshire HP5 2QD United Kingdom Declares, under our sole responsibility that the following product: Product Part No.
A.4. Waste Electrical and Electronic Equipment (WEEE) Notice The Waste Electrical and Electronic Equipment (WEEE) Directive became law in most EU countries during 2005. The directive applies to the disposal of waste electrical and electronic equipment within the member states of the European Union.
A.5. Issue No. Document Amendment Record Date 1 15/12/2009 Incorporated by AJS 2 22/12/2009 AJS Section Amended Reason for new issue Draft Issue Axell Wireless Limited Dual Band Fiber Fed BDA 60-232301 Technical Literature Document Number 60-232301HBK Issue No.
Appendix B B.1 Initial Equipment Set-Up Calculations General Information Site Name: Client Name: Date: AWL Equip. Model No. Antenna Systems Model Gain Azimuth Comments Type Loss Length Comments A - Service Antenna B – Donor Antenna C – Service Feeder D – Donor Feeder Initial Parameters E – CE Output Power F – Antenna Isolation G – Input signal level from donor BTS Operating Voltage Downlink Calculations Parameter Input signal level (G) CE max.
