Roseville Tunnel Band Selective PCS Repeater User Handbook For AFL Inc. AFL Works Order Nō.: AFL product part Nō.: Q112081 55-151601 Roseville Tunnel PCS Band Selective Repeater User Handbook Handbook Nō.
Table of Contents AMENDMENT LIST RECORD SHEET ...................................................................................................3 INTRODUCTION.........................................................................................................................................4 Scope ........................................................................................................................................................................... 4 Purpose ..........................
AMENDMENT LIST RECORD SHEET Issue Nō. 1 Date Incorporated by CMH Page No.’s Amended Reason for new issue 1st Issue Document Ref:- Roseville Tunnel PCS Band Selective Repeater User Handbook Handbook Nō.
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.
Glossary of Terms Repeater or Cell Enhancer Band Selective Repeater Channel Selective Repeater BTS C/NR Downlink (D.L.) Uplink (U.L.) EMC GND DC AC ID OIP3 LED M.S. N/A N/C NF RF Rx Tx S/N A Radio Frequency (RF) amplifier which can simultaneously amplify and re-broadcast Mobile Station (MS) and Base Transceiver Station (BTS) signals. A Cell Enhancer designed for operation on a range of channels within a specified frequency band.
Key to AFL RF Module Drawing Symbols Roseville Tunnel PCS Band Selective Repeater User Handbook Handbook Nō.
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.
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.
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).
2. SYSTEM OVERVIEW The AFL Band Selective Cell Enhancer is a 2-way on-band repeater. Various models are available to cover frequency bands from 50MHz to 3000MHz with power levels up to 100Watts. Its main sphere of applications is in urban areas where the topology is such that shadows occur in the propagation pattern (for example within large buildings, conference centres and tunnels, etc.
3. PCS BAND-SELECTIVE BDA 3.P System Photographs Roseville Tunnel PCS Band Selective Repeater User Handbook Handbook Nō.
3.1 Description The band selective (no channelisation) tunnel amplifier is directly connected to an air interface antenna directed towards the base station and a leaky feeder antenna to cover the mobiles in the tunnel. The downlink power is 20Watts, provided by a pair of parallel configured 10W amplifiers, and the uplink power device is a single 1W amplifier, which is sufficient power for ample communications with the base station.
3.
BASE Handbook Nō.-55-151601HBK Issue No:-A 15dB 16dB 02-011505 11-008201 30dB dB 17-001201 05-002601 40dB AGC DET 02-011505 02-011506 17-001109 dB 30dB 10-001204 11-008201 12-017301 12-017301 40dB 02-011505 05-002601 02-011506 dB dB 30dB 17-001201 11-008201 11-001109 11-006302 11-007202 AGC DET 11-008201 02-011505 02-011506 30dB 02-011506 10-001204 MOBILE 3.
3.5 Parts Lists AFL Part Nō.
4. SUB-UNIT MODULES 4.1 Bandpass Filters (02-011505 & 02-011506) 4.1.1 Description The bandpass filters are multi-section designs with a bandwidth dependent upon the passband frequencies, (both tuned to customer requirements). The response shape is basically Chebyshev with a passband design ripple of 0.1dB. The filters are of slot coupled, folded combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit.
4.2 PCN Splitter/Combiner (05-002601) 4.2.1 Description The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports; most usually within a specified frequency band, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports will be terminated with an appropriate 50Ω load. 4.2.
4.4 Low Noise Amplifier (11-006302) 4.4.1 Description The 15dB gain low noise amplifier used in the unit is a double stage solid-state low noise amplifier. Class A circuitry is used throughout the units to ensure excellent linearity over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. 4.4.
Roseville Tunnel PCS Band Selective Repeater User Handbook Handbook Nō.
Roseville Tunnel PCS Band Selective Repeater User Handbook Handbook Nō.
Roseville Tunnel PCS Band Selective Repeater User Handbook Handbook Nō.
Roseville Tunnel PCS Band Selective Repeater User Handbook Handbook Nō.
5. INSTALLATION 5.1 Initial Installation Record When this equipment is initially commissioned, please use the equipment set-up record sheet in Appendix A. This will help both the installation personnel and AFL should these figures be needed for future reference or diagnosis. Roseville Tunnel PCS Band Selective Repeater User Handbook Handbook Nō.
6. MAINTENANCE 6.1 General Procedures 6.1.1 Fault Finding In the event that the performance of the system is suspect, a methodical and logical approach to the problem will reveal the cause of the difficulty. The System consists of modules within a wall mounted, environmentally protected enclosure Transmissions from the main base stations are passed though the system to the mobile radio equipment; this could be a handheld radio or a transceiver in a vehicle. This path is referred to as the downlink.
6.1.2 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.
6.1.5 Checking service Following the repair of any part of the system it is recommended that a full end-to-end test is carried out in accordance with the test specification and that the coverage is checked by survey. It is important to bear in mind that the system includes a radiating cable network and base stations that may be faulty or may have been damaged. 6.1.6 Service Support Advice and assistance with maintaining and servicing this system are available by contacting Aerial Facilities Ltd. 6.
6.3 Care of Modules 6.3.1 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/inserted with care. The module may have connectors on its underside, which might not be visible to the service operative. 6.3.
5) If the amplifier to be removed has a heatsink attached, there may be several different ways it can have been assembled. The most commonly used method, is screws through the front of the heatsink to threaded screw holes (or nuts and bolts), into the amplifier within the main case. If the heatsink is mounted on the rear of the main case (e.g.
APPENDIX A INITIAL EQUIPMENT SET-UP CALCULATIONS GENERAL INFORMATION Client Name: AFL Equip. Model Nō. Site Name: Date: Model ANTENNA SYSTEMS Gain Azimuth Comments Type Loss Comments A - Service Antenna B – Donor Antenna Length C – Service Feeder D – Donor Feeder INITIAL PARAMETERS E – CE Output Power F – Antenna Isolation G – Input signal level from donor BTS Operating Voltage dBm dB dBm V DOWNLINK CALCULATIONS Parameter Comments Input signal level (G) CE max.
