Pasadena Blue Line Metro Radio System Maintenance Handbook For Canam Technology Inc. AFL Works Order Nō.: Q107519 Including AFL product part Nō’s.
Table of Contents AMENDMENT LIST RECORD SHEET .................................................................................................. 5 INTRODUCTION ....................................................................................................................................... 6 Scope...........................................................................................................................................................................6 Purpose.............................
5.2.4.2 5.2.5 5.2.5.1 5.2.5.2 5.2.5.3 5.2.5.4 5.2.5.5 5.2.5.6 5.2.5.7 5.2.5.8 5.2.5.9 5.2.5.10 5.2.6 Description ...................................................................................................................................55 24V Flat-Pack PSU (96-300002)............................................................................................................................... 55 5.2.11.1 5.2.11.2 6. Description ..................................................................
7.3.1 7.3.2 7.3.3 7.3.4 7.3.5 7.3.6 General Comments .................................................................................................................................................... 61 Module Removal (LNA’s, general procedure):......................................................................................................... 61 Module Replacement (general): .............................................................................................................................
AMENDMENT LIST RECORD SHEET Issue Nō. 1 Date 09/04/2003 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.
AFL Drawing Symbol Keys P B L Tunnel Units 1 & 2 Maintenance Handbook H/book Number:-60-056100HBKMFCC Issue No:-2 Date:-04/01/2006 Page:-8 of 63
1. SAFETY CONSIDERATIONS 1.1 Electric Shock Hazard Electrical shocks due to faulty mains driven power supplies. Whilst ever potentially present in any electrical equipment, such a condition would be minimised by quality installation practice and thorough testing at: a) Original assembly. b) Commissioning. c) Regular intervals, thereafter. All test equipment to be in good working order prior to its use. High current power supplies can be dangerous because of the possibility of substantial arcing.
1.3 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 Fibre feed Amplifier for the Pasadena Blue line project is a 2 way on-band RF amplifier. The primary application is as an interface between the fibre optical link from UNIT ONE (Port 3 Downlink/Port 4 Uplink) and the tunnel antenna/leaky feeder system(Ports J3 and J4).
3. SPECIFICATIONS 3.1 3.1.1 Parts Lists Equipment 60-056100 Parts List AFL Part N. 60-056105 60-056102 60-056104 Description PBL F/O Filter Interface UNIT1 470/473 MHz PBL F/O BDA UNIT2 483/485 MHz PBL BDA LOC2 812/857MHz Qty. 1 1 1 Ref - 3.1.
3.1.3 Unit 2 Fibre Fed Tunnel Amplifier 60-056102 Parts List AFL Part Nō. 02-007302 02-013401 02-010401 02-007339 07-004801 07-005705 10-000701 11-006102 11-007302 12-002201 12-002220 12-002826 12-004201 13-003011 17-000126 17-001105 17-001201 17-001520 17-001522 17-009720 17-009723 17-009726 80-008902 80-031820 80-032322 90-010021 90-010023 90-010026 90-010027 90-010120 90-010121 90-010122 90-010122 90-010123 90-010130 90-010132 90-010133 90-010134 90-010520 90-010522 90-010523 90-010524 Description Qty.
90-010525 91-030002 91-500011 91-500015 91-500016 91-510010 91-510013 91-510014 91-520003 91-600005 91-600007 91-600014 91-600015 91-700017 92-120009 92-400017 93-540035 96-300002 96-500003 96-500005 96-700002 96-700005 96-900018 96-920011 96-920012 97-300010 97-400010 97-900004 RF CABLE N-TYPE(M)-N-TYPE(M)400MM N ADAPTOR PANEL FEMALE:FEMALE PWR 3POLE PNL PLUG SEALED IP68 PWR CON CAP SEALED with INT. THREAD PWR 6POLE PNL PLUG SEALED IP68 PWR 3POLE FREE SOC.SEALED IP68 PWR CON CAP SEALED with Ext.
3.2 Technical Specifications 3.2.1 UHF ONE to Tunnels Technical Specification Frequency Range: Band Width Nō. of Paths Downlink Gain Uplink Gain RF Connector RF Impedance VSWR Gain Adjustment Downlink PA Uplink PA Duplexer UP/DN Isolation Passband Ripple Noise Figure Noise Figure In-Band Spurious Out-band Spurious up to 3GHz: Downlink Channels: Uplink Channels: 470.2125MHz 473.2125MHz 470.2625MHz 473.
3.2.3 UHF TWO to Tunnels Technical Specification Frequency Range: Band Width: Nō. of Paths: RF Connector: RF Impedance: VSWR: Downlink Gain: Uplink Gain: Gain Adjustment: Downlink PA: Uplink PA: Duplexer UP/DN Isolation: Passband Ripple: Noise Figure: Noise Figure: In-Band Spurious: Out-band Spurious up to 3GHz: Downlink Channels: Uplink Channels: 483.0625MHz 486.0625MHz 483.2875MHz 486.2875MHz 483.3125MHz 486.3125MHz 483.5625MHz 486.5625MHz Downlink :15kHz Uplink : 25kHz ,486.0625MHz, 486.
3.3 Mechanical Specifications 3.3.1 Unit 1 60-056101 Mechanical Specification PARAMETER SPECIFICATION height: 620 mm Size: width: 420 mm depth: 260 mm (excluding connectors, heatsinks, handles and feet) Fixings: 4 holes on 250 mm (h) x 470 mm (w) Weight: 50 kg (approx.
H/book Number:-60-056100HBKMFCC Issue No:-2 Date:-04/01/2006 F E D C B A CHKD P B L Tunnel Units 1 & 2 Maintenance Handbook Page:-18 of 63 APPD GD 15/10/02 DATE 1 ALL DIMENSIONS ARE IN mm UNLESS OTHERWISE STATED PB DBS DRAWN 260 [10.3"] 2 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm TOLERANCES 709 [2'-3.
H/book Number:-60-056100HBKMFCC Issue No:-2 Date:-04/01/2006 F E D C B A CHKD P B L Tunnel Units 1 & 2 Maintenance Handbook Page:-19 of 63 APPD GD 15/10/02 DATE 1 ALL DIMENSIONS ARE IN mm UNLESS OTHERWISE STATED PB DBS DRAWN VHF 620 [2'-0.4"] 483MHz INPUT 1 800MHz LCX 2 NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm TOLERANCES SCALE 3 709 [2'-3.
Complete Pasadena Metro System Diagram 4.
5. SUB-UNIT MODULES 5.1 Unit 1 (60-056101) 5.1.1 Bandpass Filters (02-007302) 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. The filters are of combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit.
5.1.2 AFL Fibre Optic Receiver & Transmitter (20-004001, Tx & 20-004101, Rx) 5.1.2.1 Description The FO units consist of a receiver & transmitter, which modulates the RF signal onto a laser carrier and transmits it via fibre/optic cable to a receiver unit some distance away where it is demodulated back to the original RF signal with very small values of accrued attenuation.
5.1.2.3 ‘D’ Connector Pinouts Pin Nō. 1 2 3 4 5 6 7 8 9 Rx ‘D’ Type Female Connector Signal Description +12V DC Power No Connection Power Ground No Connection No Connection O/C. Alarm Relay Alarm Contact (N.C) Relay Alarm Contact (Common) Relay Alarm Contact (N.O) Pin Nō. 1 2 3 4 5 6 7 8 9 Tx ‘D’ Type Female Connector Signal Description +12V DC Power No Connection Power Ground No Connection No Connection O/C Alarm Relay Alarm Contact (N.C) Relay Alarm Contact (Common) Relay Alarm Contact (N.
5.1.3 JWS75-15/A PSU (96-300045) 5.1.3.1 Description The power supply unit is a switched-mode type capable of supplying 24V DC at 3.25Amps continuously. This PSU is used to provide power for the fibre optic modules which will typically require less than 1.50 Amps at 15V DC, so the PSU will be used conservatively ensuring a long operational lifetime. No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals.
5.2 Unit 2 (60-056102) 5.2.1 Bandpass Filter (02-013401) 5.2.1.1 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 combline design, and are carefully aligned during manufacture in order to optimise the insertion loss, VSWR and intermodulation characteristics of the unit.
5.2.2 Two Section Notch Filter (02-010401) 5.2.2.1 Description Fitted in Unit 2 after the amplification stages is a 2 element notch filter (one in downlink, one in uplink), which is designed to reject the uplink frequencies in the downlink path and vice-versa. The notch filter is not required for Unit One as the rejection from the two series bandpass filters as apposed to one, is sufficient to meet the specification. 5.2.2.2 Technical Specification (Uplink) PARAMETER Frequency range: Stopband: Nō.
5.2.3 Crossband Couplers (07-004801 & 07-005705) 5.2.3.1 Description The purpose of a crossband coupler is to either combine/split transmission signals from different parts of the frequency spectrum. The crossband coupler fitted here, is the means by which the separate UHF & GSM frequency band signals are mixed to form a composite RF signal. It basically comprises of a 3 port device, two filters, one a low pass the other a high pass, that are then mixed and fed to a common output.
5.2.4 ¼Watt 0- -30dB Switched Attenuator (10-000701) 5.2.4.1 General Application In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 5.2.4.2 Switched Attenuators The AFL switched attenuators are available in two different types; 0 – 30dB in 2 dB steps (as in this case), or 0 – 15dB in 1 dB steps.
5.2.5.3 Drg. Nō.
5.2.5.4 Drg. Nō.
5.2.5.5 Drg. Nō.
5.2.5.6 Drg. Nō.
5.2.5.7 Technical Specification (11-007302) PARAMETER Frequency range: Bandwidth: Gain: 1dB Compression Point: 3rd order intercept: Input/Output return loss: Noise figure: Connectors: Supply: operational: Temperature range: storage: Weight: Size: SPECIFICATION 380-500MHz <140MHz 20-22dB +23.5dB (typical) +36dB (typical) >20dB <1.3dB SMA female 200-230mA @ 24V DC -10°C to +55°C -30°C to +70°C <300gms 90 x 55 x 30.
5.2.5.8 Drg. Nō.
5.2.5.9 Drg. Nō.
5.2.5.10 Drg. Nō.
5.2.6 3 Stage Amplifier Alarm Boards (12-002201) 5.2.6.1 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.
5.2.6.2 Technical Specification PARAMETER Operating voltage: Alarm Threshold: Max. switch current: Max. switch volts: Max. switch power: Min. switch load: Relay isolation: Mechanical life: Relay approval: Connector details: Temperature range: PCB Size: SPECIFICATION 8 to 30V (floating earth) Vcc - 1.20 volt +15% Alarm output relay contacts: 1.0Amp 120Vdc/60VA 24W/60VA 10.0µA/10.0mV 1.5kV >2x107 operations BT type 56 15-way 0.
5.2.6.3 Drg. Nō.
5.2.6.4 Drg. Nō.
5.2.6.
5.2.7 450MHz 20W Power Amplifier (12-004201) 5.2.7.1 Description The power amplifiers fitted to this unit are multi-stage, solid state power amplifiers. Class A circuitry is employed throughout the units to ensure excellent linearity over a wide dynamic frequency range. All the semi-conductor devices are very conservatively rated to ensure low device junction temperatures and a long, trouble free working lifetime. The power amplifiers should require no maintenance over their operating lives.
5.2.7.3 Drg. Nō.
5.2.7.4 Drg. Nō.
5.2.7.5 Drg. Nō.
5.2.7.6 Drg. Nō.
5.2.7.7. Drg. Nō.
5.2.8 DC/DC Converter, 24V in, 12V 8A out (13-003011) 5.2.8.1 Description The DC/DC converter fitted is an AFL assembled, high power PCB unit with an 8 amp @ 24V in, 12V output capability. The circuit is basically an O.E.M semiconductor regulator (one side of which has a heatsink mounting plate, that is usually bolted to the casing of a Cell Enhancer) and smoothing components built onto a printed circuit board with screw block terminations. Note: no circuit diagram of the O.E.M. regulator is available.
5.2.9 Wide Dynamic Range AGC (17-001105, Det. & 17-001201, Atten.) 5.2.9.1 Description The equipment is fitted with a wide dynamic range Automatic Gain Control (AGC) system. This is generally fitted in the Uplink path (not usually needed in the downlink path, as the signal here is at an almost constant level), to avoid overloading the amplifiers (with the associated performance degradation) should a mobile be operated very close to the unit.
For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. The AGC onset level is adjusted by the choice of sampler resistor R1 and by the setting of potentiometer VR1. The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB.
5.2.9.3 Drg. Nō.
5.2.9.4 Drg. Nō.
5.2.9.5 Drg. Nō.
5.2.9.6 Drg. Nō.
5.2.10 24V Single Relay Board (80-008902) 5.2.10.1 Description The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is 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.
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. 6.2 General The size and weight of the wall units mean that they represent a significant health hazard unless they are mechanically installed in the correct manner.
6.5 RF Connections All RF connections are made to the cable termination, located on the right-hand side of the wall enclosure. Care must be taken to ensure that the correct connections are made with particular attention made to the base station TX/RX ports. In the event that the base transmitter is connected to the RX output of the rack, damage to the equipment may be done if the base station transmitter is then keyed. If the environment where the equipment is installed is deemed to be ‘wet’ i.e.
7. MAINTENANCE 7.1 General Procedures 7.1.1 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 walkie-talkie, mobile telephone 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 Care of Modules 7.3.1 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. 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.