Baltimore Transit Radio Repeater System User/Maintenance Handbook (3) for Intelect Corp. AFL Works Order: AFL product part No.: Handbook Number 60-166701HBKM Issue No.
1. INTRODUCTION Scope and Purpose of this Document This handbook is for use solely with the equipment identified by the AFL Part Number shown on the front cover. It is not to be used with any other equipment unless specifically authorised by Aerial Facilities Limited. This is a controlled release document and, as such, becomes a part of Aerial Facilities’ Total Quality Management System. Alterations and modification may therefore only be performed by Aerial Facilities Ltd.
Table of Contents INTRODUCTION.......................................................................................................................... 2 1. Scope and Purpose of this Document................................................................................................. 2 Limitation of Liability Notice................................................................................................................. 2 2. SAFETY CONSIDERATIONS .................................................
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.
2.4 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).
3.
3.1 800MHz 20W/1W Bi-Directional Amplifier (60-166701) 3.1.P 800MHz 20W/1W Bi-Directional Amplifier Photographs Front View – Door Closed Front View – Door Open Maintenance Handbook Baltimore Radio Repeater System Handbook No.
Photographs continued……… Inside Case Floor showing Alarm Krone Blocks & Relay PCB’s 3.1.1 800MHz Remote Site BDA Description The 800MHz BDA is a wall mount unit, 24” x 24” x 12” in size. It provides the required amplification at a Remote Site for the wanted 800MHz signals. The 800MHz BDA operates primarily from an 110V AC supply but it also has a 24V DC supply port for connection to a Battery Backup Unit if required. In more detail, the 800MHz BDA Downlink (Base Transmit) input the 800MHz Downlink port.
3.1.2 800MHz Remote Site BDA Technical Specifications PARAMETER Frequency range: SPECIFICATION 851.0-869.0MHz (Downlink) 806.0-824.0MHz (Uplink) 18MHz 45dB < +/-1.5dB 0-15dB (in 1dB steps) +41.0dBm +61.0dBm +18.0dBm +0dBm > 30dB +31.0dBm 3 (DL In, DL Out, UL Out) 20dBc <6.
3.1.4 800MHz Remote Site BDA Alarm Wiring, Drg. Nō. 60-166751 Maintenance Handbook Baltimore Radio Repeater System Handbook No.
3.1.5 800MHz Remote Site BDA O/P Connections for NFM, Drg. Nō. 60-166752 Maintenance Handbook Baltimore Radio Repeater System Handbook No.
3.1.6 800MHz Remote Site BDA System Diagram, Drg. Nō. 60-166781 Maintenance Handbook Baltimore Radio Repeater System Handbook No.
3.1.7 800MHz Remote Site BDA Outline Drawing, Drg. Nō. 60-166791 Maintenance Handbook Baltimore Radio Repeater System Handbook No.
3.1.
4. INSTALLATION & COMMISIONING 4.1 Initial Installation Record When this equipment is initially commissioned, please use the equipment set-up record sheet in the Appendices. This will help both the installation personnel and AFL should these figures be needed for future reference or diagnosis. 4.2 Optical Connections The optical input and output ports will be located on the appropriate E/O shelf as shown in the rack layout drawing and the system layout drawing.
4.3 Wall Mounted Equipment The procedure for installing and commissioning a wall-mounted Bi-Directional Amplifier unit is generally as follows: Fix the unit in the chosen position. Ensure the mounting site is a straight, smooth, perpendicular surface (brick or concrete recommended). Mounting bracket centres/dimensions will be found in the specifications section (3.3). After fixing, mechanically test the installation before proceeding.
5. FAULT FINDING / MAINTENANCE 5.1 Tools & Test Equipment The minimum tools and test equipment needed to successfully service this AFL product are as follows:Spectrum analyser: Signal Generator: Attenuator: Test Antenna: Digital multi-meter: Test cable x 2: Test cable x 2: 100kHz to 2GHz (Dynamic range = 90dB). 30MHz to 2GHz (-120dBm to 0dBm o/p level). 20dB, 10W, DC-2GHz, (N male – N female). Yagi or dipole for operating frequency. Universal Volt-Ohm-Amp meter. N male – N male, 2M long RG214.
5.3 Quick Fault Checklist All AFL 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 installations result from simple causes often occurring as result of transportation, unpacking and installation. Below are listed some common problems which have resulted in poor performance or an indicated non-functioning of the equipment. Mains power not connected or not switched on.
5.8 Care of Modules 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. Good engineering practices should be observed at all times. To prevent damage to a module, it must be withdrawn/inserted with care. 5.
5.12 Low Power Amplifier Replacement Disconnect the mains power supply and disconnect the 24V dc supply connector for the LPA. Disconnect the RF input and output cables from the LPA. Disconnect the alarm connector (D type connector). Remove the LPA module by removing the four retaining screws, replace with a new LPA module and secure it with the screws. Connect the RF cables to the LPA input and output connectors. Reconnect the wires to the alarm board connector pins 9 and 10.
6 APPENDIXES 6.1 Glossary of Terms used in this document Repeater or Cell Enhancer Band Selective Repeater Channel Selective Repeater AC AGC BBU BTS CEMS C/NR DAB DC Downlink (D/L) FO GND ID LED LCX LNA LPA MOU M/S MS MTBF N/A N/C OFR OIP3 PA RF RSA RX S/N TTL TX Uplink (U/L) VSWR WDM A Radio Frequency amplifier which can simultaneously amplify and rebroadcast Mobile Station and Base Transceiver Station signals.
6.2 AFL RF Module Drawing Key Maintenance Handbook Baltimore Radio Repeater System Handbook No.
6.
6.4 Amendment List Record Sheet Issue No. A 1 Date 09/02/2006 Incorporated by CMH CMH Page Nos. Amended Reason for new issue 1st Draft 1st Issue Document Ref:- 60-166701HBKM Maintenance Handbook Baltimore Radio Repeater System Handbook No.
