5 Channel, Channelised Cell Enhancer Maintenance Handbook For AFL Works Order Nō.:Q108745 Includes AFL product part Nō’s.
Table of Contents AMENDMENT LIST RECORD SHEET ................................................................................................. 4 INTRODUCTION ....................................................................................................................................... 5 Scope...........................................................................................................................................................................5 Purpose..............................
5.1.6.5 Drg. Nō. 80-008450, PA to Alarm Board DC Wiring Details .........................................................30 5.1.7 3 Stage Amplifier Alarm Boards (12-002201).........................................................................................31 5.1.7.1 Description .......................................................................................................................................31 5.1.7.2 Technical Specification ..........................................................
AMENDMENT LIST RECORD SHEET Issue Nō. 1 Date 09/07/2003 Incorporated by CMH Page No.
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. 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.
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 5-Way Channelised UHF Cell Enhancer Maintenance Handbook H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 Page:-7 of 54
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.
1.4 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. OVERVIEW/SYSTEM DESCRIPTION The AFL Channel Selective Cell Enhancer is a 2-way on-band repeater. Various models are available to cover frequency bands from 50MHz to 3000MHz. 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. SPECIFICATION 5 Channel Channelised Cell Enhancer 50-060601 Parts Lists 3.1 AFL Part Nō. 50-060602 50-060603 50-060604 Description D/L CCE 80dB 10W Q108330 U/L CCE 80dB 10W Q108330 PSU Q108330 Qty. 1 1 1 Modules described in the text are shown as highlighted in the parts list in the quantity column. All fuses used in this equipment must be replaced with identical types as proscribed in the description column of the particular unit’s parts list. 3.1.
3.1.2 Uplink Channelised CE 50-060603 Parts List AFL Part Nō. 02-010701 05-002603 05-003803 10-000701 11-007302 11-007402 12-001901 12-002201 12-002220 13-001803 17-003012 19-000826 20-001602 21-001701 80-024420 80-024421 80-043320 91-020004 91-500001 91-510003 91-600001 91-620001 91-620006 91-700017 92-340001 96-110001 96-110013 96-500005 96-600002 96-600003 97-400006 Description 5P 380MHz(V.B/W)X CPLING SMA POSTS UHF 3dB SPLITTER SMA 3 WAY SPLITTER, UHF, ZINGER 1/4W0-30dB SWITCHED ATTENUATOR LNA.
3.1.3 Power Supply Shelf 50-060604 Parts List 19-000826 19-001021 19-001024 20-001602 80-064120 91-500025 91-510003 91-510004 91-520001 91-520004 91-600001 92-340001 93-560001 96-300054 96-300056 96-700034 96-700035 96-900018 97-400002 2U,3U,4U 19" UNIT 400 DEEP LID 4U 19" UNIT 400 DEEP CHASSIS + BKT 4U 19" UNIT FRONT PANEL FAB 24V RELAY BOARD HEATSINK 4U FLATPAC 16A 10W 3 PIN RIGHT ANGLE FREE PLUG NC-X 3 PIN R.ANGLE FREE SOC.NC-X. 3 PIN PNL.MOUNT SOCKET NC-X PWR MAINS INL FIXED/SOLD.
3.2 Technical Specification PARAMETER SPECIFICATION Downlink Frequency Range: 453.30-453.75MHz Uplink Frequency Range: 458.30-458.75MHz Channel Bandwidth selectivity: 12.5kHz adjacent channel >20dB 25kHz adjacent channel >80dB Number of Channels: 5 Number of ports: 2 RF Connectors: N type, female Impedance: 50Ω VSWR: Better than 1.5:1 Sensitivity: 0.
3.3 Mechanical Specification Height: Width: Depth: Case Size: operational: storage: Weight: Humidity: RF Connectors: Environmental Protection: Case: Finish: Heatsinks: Handles: Temperature Range: Supply Cable: * Eurorack Shelves(1U=44.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 F E D C B A CHKD 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-16 of 54 APPD 1 2 A LNA 31dB GAIN 11-007402 dB 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm TOLERANCES 3 SCALE - ATTENUATOR 0-30dB 10-000701 3 THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 F E D C B A CHKD 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-17 of 54 APPD GD 30/06/03 DATE 1 ALL DIMENSIONS ARE IN mm UNLESS OTHERWISE STATED SS MNR DRAWN A PA 28dB GAIN 12-001901 1 SPLITTER 05-003803 SPLITTER 05-003803 3 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm TOLERANCES B/W=15kHz 453.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 F E D C B A CHKD 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-18 of 54 APPD GD 30/06/03 DATE E N L 110V AC 1 ALL DIMENSIONS ARE IN mm UNLESS OTHERWISE STATED SS MNR DRAWN 1 3A CB2 3A CB1 3 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm TOLERANCES 3 SCALE THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
5. SUB-UNIT MODULES Downlink Channelised Cell Enhancer 60-060602 (5U chassis) 5.1 5.1.1 Bandpass Filters (02-010701) 5.1.1.1 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.
5.1.2 UHF 3dB Splitter (05-002603) 5.1.2.1 Description The 3dB Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, 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. 5.1.2.
5.1.3 3dB UHF Splitter (05-002603) 5.1.3.1 Description The 3dB Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, 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. 5.1.3.2 Technical Specification PARAMETER SPECIFICATION Frequency Range: 400-500 MHz Power Rating: 5 Watts Insertion Loss: 5.
5.1.5 Low Noise Amplifiers (11-007302 & 11-007402) 5.1.5.1 Description The low noise amplifiers used are double stage solid-state low-noise amplifiers. Class A circuitry is used in 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 failure then the entire amplifier should be replaced.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 F E D C B A 2 11-007302 380-500MHz 20dB 10-24V DC ******** **/**/20** DE V ICE S 0086 AFL 19 OUT IN 34 IN 4 PLACES see note 2 28 see note 2 31 CHKD 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-23 of 54 APPD IB 9/7/02 DATE 1 ALL DIMENSIONS ARE IN mm UNLESS OTHERWISE STATED CB DBS DRAWN 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 F E D C B A CHKD 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-24 of 54 APPD IB 5/7/02 DATE 1 ALL DIMENSIONS ARE IN mm UNLESS OTHERWISE STATED CB DBS DRAWN RF INPUT 1 51R R1 11303-3 CP L1 C4 1nF C3 3.3pF 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm TOLERANCES - L4 S 330nH D G D Ø1.6x6 turns SCALE 3 S L2 CLY 2 TR2 CLY 2 1nF G TR1 Ø1.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 F E D C B A CHKD 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-25 of 54 APPD IB 8/7/02 DATE 1 ALL DIMENSIONS ARE IN mm UNLESS OTHERWISE STATED CB DBS DRAWN RF IN 1 -ve 5V 75mA -ve 5V 75mA DC INPUT 3 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm TOLERANCES 3 SCALE THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 F E D C B A CHKD A B V _IN 1 2 2 1 J1 J5 2 2 1 J4 J3 J4 1 2 J5 J3 1 1 J1 P1 J2 2 >12V DC I/P J2 + + C13 10u 1u C4 ZD3 5.
5.1.6 10Watt Power Amplifier (12-001901) 5.1.6.1 Description The power amplifier fitted to this unit is a multi-stage, solid state class A power amplifier. All the semi-conductor devices are very conservatively rated to ensure low device junction temperatures and a long, trouble free working lifetime. The amplifier was originally designed to have a 20W power output, but in this instance, the biasing is changed to give the device a 10W rating.
Issue No:-1 Date:-04/07/2003 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-28 of 54 IS S UE 13/6/94 DATE 16/9/92 1 DE S CRIP TI ON CR0521 PRODUCTION ISSUE 2 No 23/12/98 11 PRODUCTION ISSUE (CR0962) 2A IN 3 PLACES 4 DBS DJL SEW IN 2 POSNS G CHK D TR 101 E + 1 21 17/09/92 APPD A LL DIME NS IONS A RE IN mm UNLE S S OTHE RWIS E S TA TE D DBS DA TE EACH SIDE IN 4 POSNS IN 2 POSNS C 107 R 104 C 17 + + C 16 L5 FB 5 C 18 L105 FB 105 DE TA IL D + L104 1
5.1.6.4 Drg. Nō.
5.1.6.5 Drg. Nō.
5.1.7 3 Stage Amplifier Alarm Boards (12-002201) 5.1.7.1 Description Amplifier Alarm Boards are fitted to monitor the bias conditions of AFL Class A amplifiers which remain constant in normal operation. Any departure from normal bias conditions is a result of device failure, excess temperature, over-driving or oscillation (excessive power). In normal operation, the Class A bias circuit of the amplifier develops a constant voltage of 1.20V across the collector current setting resistor.
5.1.7.2 Technical Specification PARAMETER SPECIFICATION Operating voltage: 8 to 30V (floating earth) Alarm Threshold: Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current: 1.0Amp Max. switch volts: 120Vdc/60VA Max. switch power: 24W/60VA Min. switch load: 10.0µA/10.0mV Relay isolation: 1.5kV Mechanical life: >2x107 operations Relay approval: BT type 56 Connector details: 15-way 0.
5.1.7.3 List Drg. Nō.
5.1.7.4 Drg. Nō.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 Generic Rack Shelf Enclosure Alarm Wiring Sketch 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-35 of 54 M L K J I H G F E D C D1 1.
5-Way Channelised UHF Cell Enhancer Maintenance Handbook H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 Page:-36 of 54
5.1.8 Dual DC/DC Converter (13-001803) 5.1.8.1 Description This unit is employed where it is necessary to derive two fixed voltage power supply rails from some higher voltage. Typically it is used to derive 5, 8, 12 or 15V from a 24V input. The circuit is based upon a pair of LM257 series variable voltage regulators (LM2576, 12 & 15V & LM2575, 5V), which are each capable of supplying an absolute maximum of 1.5A output current.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 F E D C B A CHKD 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-38 of 54 1 + C7 C10 C4 D1 1 +15v C8 C5 IC1 0v 5 +24v 0v L4 1 2 0v + IC2 +5v C2 5 C3 k 3 APPD BB 07/03/02 DATE 1 + 4 3 6 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm TOLERANCES 3 SCALE THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
H/book Number:-50-060601HBKM Issue No:-1 Date:-04/07/2003 F E D C B A CHKD 5-Way Channelised UHF Cell Enhancer Maintenance Handbook Page:-39 of 54 C11 0.47uF 2 + C9 2.2uF C8 100nF 100uH L5 100uH L4 3 APPD BB 11/03/02 DATE 1 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm TOLERANCES 3 SCALE THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
5.1.9 Channel Selective Module (17-003012) 5.1.9.1 Description The channel selectivity module is employed when the Cell Enhancer requirement dictates that very narrow bandwidths (single operating channels), must be selected from within the operating passband. One channel selectivity module is required for each channel.
5.1.9.2 Drg. Nō.
5.1.10 24V Relay Board (20-001602) 5.1.10.1 Description The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with two dual pole change-over relays RL1 and RL2, with completely isolated wiring, accessed via screw terminals. Both relays are provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits.
5.1.10.2 Drg. Nō.
5.1.10.3 Drg. Nō.
5.2 Uplink Channelised Cell Enhancer 50-060603 (5U chassis) 5.2.1 DC Tap Module (21-001701) 5.7.1 Description DC taps are used where it is necessary to inject a DC source ‘through’ an RF signal path so that equipment in a remote location may be sourced with DC power (where it may be impractical to have mains power). Where used, it will always be that one DC tap module is used at each ‘end’ of the DC source, one to supply the DC onto the RF signal, and one to remove it at its ultimate destination.
5.3 Power Supply Shelf 50-060604 (4U chassis) 5.3.1 24V 410W Flat-Pack Power Supply (96-300054) 5.3.1.1 Description The power supply unit is a switched-mode type capable of supplying 24V DC at 17.0Amps continuously. Equipment of this type typically requires approximately 5-7.0 Amps at 24V DC, so the PSU will be used conservatively ensuring a long operational lifetime. No routine maintenance of the PSU is required.
5.3.2 48V/8A DC Power Supply Module (96-300056) 5.3.2.1 Description This PSU module is similar in size and type to the 24V module, being a multi-mainsvoltage switch mode unit but having a 48V DC output. The unit is used to power the remote amplifier unit via the DC Tap Module (see section 5.2.1). A small volt drop from the 48V PSU to the remote cell enhancer is expected so that the DC voltage may be easily converted to 24V to power the remote enhancers’s electronics. 5.3.2.
6. INSTALLATION 6.1 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.
7. MAINTENANCE 7.1 7.1.1 General Procedures Basic 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 fitted within shelves or trays and all housed within a standard 19” rack type cabinet. 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.
7.1.2 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.
7.1.5 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. 7.1.6 Service Support Advice and assistance with maintaining and servicing this system are available by contacting Aerial Facilities Ltd. 7.
7.3 7.3.1 Care of Modules 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. 7.3.
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 DOWNLINK CALCULATIONS Parameter Comments Input signal level (G) CE max.
