Axell Wireless 50-1184800 Tunnel Radio Bi directional 800MHz amplifier User Manual Weehawken 800
Axell Wireless Tunnel Radio Bi directional 800MHz amplifier Weehawken 800
User manual
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| Document Description | User manual |
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| Date Submitted | 2006-01-09 00:00:00 |
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| Document Author: | Dan |
Weehawken Tunnel Radio 800MHz Repeater System User/Maintenance Handbook For G.E Transport Systems AFL Works Order Nō.: Q112727 AFL product part Nō.’s: 50-118401 (800MHz CCE) 80-231302 (800MHz Power Supply) 80-231303 (Alarm System) Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-1 of 51 Table of Contents INTRODUCTION ............................................................................................................................................5 Scope................................................................................................................................................................................ 5 Purpose............................................................................................................................................................................ 5 Glossary of Terms .......................................................................................................................................................... 7 Key to AFL RF Module Drawing Symbols .................................................................................................................. 8 1. SAFETY CONSIDERATIONS ............................................................................................................9 1.1 1.2 1.3 1.4 1.5 2. Earthing of Equipment ..................................................................................................................................... 9 Electric Shock Hazard ...................................................................................................................................... 9 RF Radiation Hazard...................................................................................................................................... 10 Chemical Hazard............................................................................................................................................. 11 Emergency Contact Numbers ........................................................................................................................ 11 OVERVIEW/ SYSTEM DESCRIPTION..........................................................................................12 2.1 3. General System Description ........................................................................................................................... 12 WEEHAWKEN RACK DRAWINGS................................................................................................13 3.1 3.2 3.3 3.4 3.5 4. 800/900MHz Rack System Diagram, Drg. Nō. 80-231483 ........................................................................... 13 800/900MHz Rack Layout and Interconnections Diagram, Drg. Nō. 80-231454 ...................................... 14 Rack to Rack Interconnections Diagram, Drg. Nō. 80-231455 ................................................................... 15 Power Distribution Sketch.............................................................................................................................. 16 Weehawken System Frequencies Look-up Table......................................................................................... 17 800MHZ CELL ENHANCER (50-118401) .............................................................................................18 4.1 4.2 4.3 4.4 4.5 4.6 5. 800MHz Cell Enhancer Description .............................................................................................................. 18 800MHz Cell Enhancer Technical Specification .......................................................................................... 18 800MHz Cell Enhancer System Diagram, Drg. Nō. 50-118481................................................................... 19 800MHz Seven Channel Module Shelf System Diagram, Drg. Nō. 50-118482 .......................................... 20 800MHz Cell Enhancer Uplink Path, Drg. Nō. 50-118483 .......................................................................... 21 800MHz Cell Enhancer Parts List ................................................................................................................. 22 POWER SUPPLY & ALARMS..........................................................................................................23 5.1 800MHz Power Supply (80-231302) .............................................................................................................. 23 5.1.1 800MHz Power Supply Description.............................................................................................................. 23 5.1.2 800MHz Power Supply Technical Specification ........................................................................................... 23 5.1.3 800MHz Power Supply System Diagram ...................................................................................................... 23 5.1.4 800MHz Power Supply Outline Drawing, Drg. Nō. 80-231392 ................................................................... 24 5.1.5 800MHz Power Supply Parts List ................................................................................................................. 25 5.2 Alarm/Monitor Shelf (80-231303).................................................................................................................. 26 5.2.1 Alarm/Monitor Shelf Description.................................................................................................................. 26 5.2.2 Alarm/Monitor Shelf Technical Specification ............................................................................................... 26 5.2.3 Alarm/Monitor Shelf Parts List ..................................................................................................................... 27 6. SUB-UNIT MODULES .......................................................................................................................28 6.1 6.1.1 6.1.2 6.2 6.2.1 6.2.2 6.7 6.7.1 6.7.2 6.8 6.8.1 6.8.2 6.9 Bandpass Filter (02-004502)........................................................................................................................... 28 Description.................................................................................................................................................... 28 Technical Specification ................................................................................................................................. 28 Bandpass Filter (02-007206)........................................................................................................................... 29 Description.................................................................................................................................................... 29 Technical Specification ................................................................................................................................. 29 900MHz Splitter/Combiner (05-002602)....................................................................................................... 30 Description.................................................................................................................................................... 30 Technical Specification ................................................................................................................................. 30 ¼Watt 0- -30 & 0-15dB Switched Attenuator (10-000701 & 10-000901)................................................... 31 General Application ...................................................................................................................................... 31 Switched Attenuators..................................................................................................................................... 31 Low Noise Amplifier (11-005902) .................................................................................................................. 32 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-2 of 51 6.9.1 Description.................................................................................................................................................... 32 6.9.2 Technical Specification ................................................................................................................................. 32 6.10 Low Noise Amplifier (11-006702) .................................................................................................................. 33 6.10.1 Description................................................................................................................................................ 33 6.10.2 Technical Specification ............................................................................................................................. 33 6.11 20W Power Amplifier (12-018002) ................................................................................................................ 34 6.11.1 Description................................................................................................................................................ 34 6.11.2 Technical Specification ............................................................................................................................. 34 6.11.3 PA 7-Way Connector Pin-outs .................................................................................................................. 34 6.12 800MHz 1Watt Low Power Amplifier (12-021901)...................................................................................... 35 6.12.1 Description................................................................................................................................................ 35 6.12.2 Technical Specification ............................................................................................................................. 35 6.12.3 LPA 7-Way Connector Pin-outs................................................................................................................ 35 6.13 D.I.P Channel Control Module (17-002101) ................................................................................................. 36 6.13.1 Description................................................................................................................................................ 36 6.13.2 Programming Procedure .......................................................................................................................... 37 6.13.3 12.5kHz step size switch functions ............................................................................................................ 37 6.13.4 25kHz step size switch functions ............................................................................................................... 38 6.13.5 Programming Example ............................................................................................................................. 38 6.13.6 17-002101 Controller Module DIP Switch Connector Data .................................................................... 39 6.13.7 Drg. Nō. 17-002190, DIP Switch Module Controller Outline Drawing ................................................... 40 6.14 Channel Selective Modules (17-003033, 17-009143, 17-009127 & 17-010803)........................................... 41 6.14.1 Description................................................................................................................................................ 41 6.14.2 Drg. Nō. 17-003080, Generic Channel Module Block Diagram .............................................................. 42 6.15 12 & 24V Dual Relay Boards (20-001601 & 20-001602).............................................................................. 43 6.15.1 Description................................................................................................................................................ 43 6.15.2 Technical Specification ............................................................................................................................. 43 6.16 12 & 24V Single Relay Board (80-008901 & 80-008902) ............................................................................. 43 6.16.1 Description................................................................................................................................................ 43 9. 9.1 9.2 9.3 10. INSTALLATION.................................................................................................................................44 General Remarks ............................................................................................................................................ 44 RF Connections ............................................................................................................................................... 45 Commissioning ................................................................................................................................................ 45 MAINTENANCE.................................................................................................................................46 10.1 Fault Finding ................................................................................................................................................... 46 10.1.1 Quick Fault Checklist................................................................................................................................ 46 10.1.2 Fault Isolation........................................................................................................................................... 46 10.1.3 Downlink ................................................................................................................................................... 47 10.1.4 Uplink........................................................................................................................................................ 47 10.1.5 Checking service ....................................................................................................................................... 47 10.1.6 Fault repair ............................................................................................................................................... 48 10.1.7 Service Support ......................................................................................................................................... 48 10.2 Tools & Test Equipment................................................................................................................................. 48 10.3 Care of Modules .............................................................................................................................................. 49 10.3.1 General Comments.................................................................................................................................... 49 10.3.2 Module Removal (LNA’s, general procedure): ......................................................................................... 49 10.3.3 Module Replacement (general):................................................................................................................ 49 10.3.4 Power Amplifiers....................................................................................................................................... 49 10.3.5 Low Power Amplifier Replacement........................................................................................................... 50 10.3.6 Module Transportation: ............................................................................................................................ 50 APPENDIX A INITIAL EQUIPMENT SET-UP CALCULATIONS ....................................................51 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-3 of 51 AMENDMENT LIST RECORD SHEET Issue Nō. Date 05/09/2005 Incorporated by CMH Page No.’s Amended Reason for new issue 1st Draft 1st Issue CMH Document Ref:-80-231401HBKM Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-4 of 51 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. Maintenance and adjustments to any deeper level must be performed by AFL, normally at the company’s repair facility in Chesham, England. This handbook has been prepared in accordance with BS 4884, and AFL’s Quality procedures, which maintain the company’s registration to BS EN ISO 9001:2000 and to the R&TTE Directive of the European Parliament. Copies of the relevant certificates and the company Quality Manual can be supplied on application to the Quality Manager. This document fulfils the relevant requirements of Article 6 of the R&TTE Directive. Limitation of Information Notice This manual is written for the use of technically competent operators/service persons. No liability is accepted by AFL for use or misuse of this manual, the information contained therein, or the consequences of any actions resulting from the use of the said information, including, but not limited to, descriptive, procedural, typographical, arithmetical, or listing errors. Furthermore, AFL does not warrant the absolute accuracy of the information contained within this manual, or it’s completeness, fitness for purpose, or scope. AFL has a policy of continuous product development and enhancement, and as such, reserves the right to amend, alter, update and generally change the contents, appearance and pertinence of this document without notice. All AFL products carry a twelve month warranty from date of shipment. The warranty is expressly on a return to base repair or exchange basis and the warranty cover does not extend to on-site repair or complete unit exchange. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-5 of 51 EC DECLARATION OF CONFORMITY In accordance with BS EN ISO/IEC 17050-1&-2:2004 0086 AERIAL FACILITIES LTD Aerial House Asheridge Road Chesham Bucks HP5 2QD United Kingdom DECLARES, UNDER OUR SOLE RESPONSIBILITY THAT THE FOLLOWING PRODUCT PRODUCT PART NO[S] 80-231401 PRODUCT DESCRIPTION Weehawken tunnel amplifier system IN ACCORDANCE WITH THE FOLLOWING DIRECTIVES: 1999/5/EC directives The Radio & Telecommunications Terminal Equipment Directive Annex V and its amending HAS BEEN DESIGNED AND MANUFACTURED TO THE FOLLOWING STANDARD[S] OR OTHER NORMATIVE DOCUMENT[S]: BS EN 60950 Information technology equipment. Safety. General requirements ETS EN 301 489-1 EMC standard for radio equipment and services. Part 1. Common technical requirements I hereby declare that the equipment named above has been designed to comply with the relevant sections of the above referenced specifications. The unit complies with all essential requirements of the Directives. SIGNED B S BARTON TECHNICAL DIRECTOR DATE: 08/11/2005 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-6 of 51 Glossary of Terms Repeater or Cell Enhancer Band Selective Repeater Channel Selective Repeater AC AGC BBU BTS CEMS C/NR DC Downlink (D/L) FO GND ID LED LNA LPA MOU M.S. MTBF N/A N/C OFR OIP3 PA RF RSA Rx S/N Tx Uplink (U/L) VSWR WDM 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. A Cell Enhancer, designed for operation on specified channel(s) within a specified frequency band. Channel frequencies may be factory set or on-site programmable. Alternating Current Automatic Gain Control Battery Backup Unit Base Transceiver Station Coverage Enhanced Management System Carrier-to-Noise Ratio Direct Current RF signals Tx from the BTS to the Master Site Fibre Optic Ground Identification Number Light Emitting Diode Low Noise Amplifier Low Power Amplifier Master Optical Unit Mobile Station Mean Time Between Failures Not Applicable No Connection On Frequency Repeater Output Third Order Intercept Point = RFout +(C/I)/2 Power Amplifier Radio Frequency Receiver/Splitter Amplifier Receiver Serial Number Transmitter RF signals transmitted from the MS to the BTS Voltage Standing Wave Ratio Wave division multiplex Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-7 of 51 Key to AFL RF Module Drawing Symbols Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-8 of 51 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. 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. Always switch off during disconnection and reconnection. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-9 of 51 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. This would always be a wise precaution, despite the severe mismatch between the impedance of an N type connector at 50Ω, and that of free space at 377Ω, which would severely mitigate against the efficient radiation of RF power. Radio frequency burns could also be a hazard, if any RF power carrying components were to be carelessly touched! Antenna positions should be chosen to comply with requirements (both local & statutory) regarding exposure of personnel to RF radiation. When connected to an antenna, the unit is capable of producing RF field strengths, which may exceed guideline safe values especially if used with antennas having appreciable gain. In this regard the use of directional antennas with backscreens and a strict site rule that personnel must remain behind the screen while the RF power is on, is strongly recommended. Where the equipment is used near power lines, or in association with temporary masts not having lightning protection, the use of a safety earth connected to the case-earthing bolt is strongly advised. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-10 of 51 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). They are marked as hazardous in line with international regulations, but pose no threat under normal circumstances. Only if a component containing beryllium oxide has suffered catastrophic failure, or exploded, will there be any danger of the formation of dust. Any dust that has been created will be contained within the equipment module as long as the module remains sealed. For this reason, any module carrying the yellow and black danger sign should not be opened. If the equipment is suspected of failure, or is at the end of its life-cycle, it must be returned to Aerial Facilities Ltd for disposal. To return such equipment, please contact the Quality Department, who will give you a Returned Materials Authorisation (RMA) number. Please quote this number on the packing documents, and on all correspondence relating to the shipment. PolyTetraFluoroEthylene, (P.T.F.E.) and P.T.F.E. Composite Materials Many modules/components in AFL equipment contain P.T.F.E. as part of the RF insulation barrier. This material should never be heated to the point where smoke or fumes are evolved. Any person feeling drowsy after coming into contact with P.T.F.E. especially dust or fumes should seek medical attention. 1.5 Emergency Contact Numbers The AFL Quality Department can be contacted on: Telephone Fax e-mail +44 (0)1494 777000 +44 (0)1494 777002 qa@aerial.co.uk Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-11 of 51 2. OVERVIEW/ SYSTEM DESCRIPTION 2.1 General System Description The Weehawken tunnel radio system is designed to amplify various bands of radio frequencies, in either channelised or band selective modes. All the hardware is built into standard 19” rack mounted cabinets which have an environmental IP rating of 54. The systems in this document will be described as individual shelves (800MHz and 900MHz Pager) and the various passive combiners, splitters and cross-band coupler shelves will also be described in separate documents. Every active module in the entire system has a dedicated alarm and these are series wired within the shelves to a relay which gives a volt-free output pair for each shelf which is wired to a ‘krone-block’ termination in the rack cabinet. The 800/900MHz repeater system has its own dedicated mains driven power supply. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-12 of 51 3. WEEHAWKEN RACK DRAWINGS 800/900MHz Rack System Diagram, Drg. Nō. 80-231483 3.1 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-13 of 51 3.2 800/900MHz Rack Layout and Interconnections Diagram, Drg. Nō. 80-231454 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-14 of 51 3.3 Rack to Rack Interconnections Diagram, Drg. Nō. 80-231455 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-15 of 51 24V Inputs Handbook Nō.-Weehawken_800 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Issue No:-A Date:-05/08/05 Page:-16 of 51 12V D C Isolation 110/ 230V A C O FF ON ON O FF ON O FF O FF ON IN ON IN O FF O UT O UT ON 110/ 230V A C 110/ 230V A C Alarm s ON O FF ON 12V Outputs O FF O FF ON O FF 115V Supply 12V Inputs 115V to R ack 2 Alarm s 24V Outputs 24V Supply Leads 115V F rom R ack 1 115V Supply Alarm s IN O UT IN O UT 115V Supply Alarm s 3.4 Power Distribution Sketch 3.5 Weehawken System Frequencies Look-up Table Agency New Jersey Transit Bus Data System New Jersey Transit Bus Data System Township of North Bergen Police City of Union City New Jersey Transit Trunked Radio System New Jersey Transit Trunked Radio System New Jersey Transit Trunked Radio System New Jersey Transit Trunked Radio System City of Union City New Jersey Transit Trunked Radio System New Jersey Transit Trunked Radio System New Jersey Transit Trunked Radio System New Jersey Transit Trunked Radio System City of Union City City of Union City New Jersey Transit Trunked Radio System New Jersey Transit Trunked Radio System New Jersey Transit Paging New Jersey Transit Paging Channel Number 800 CHN 1 800 CHN 2 800 CHN 3 800 CHN 4 800 CHN 5 800 CHN 6 800 CHN 7 800 CHN 8 800 CHN 9 800 CHN 10 800 CHN 11 800 CHN 12 800 CHN 13 800 CHN 14 800 CHN 15 800 CHN 16 800 CHN 17 900 CHN 1 900 CHN 2 Uplink Tx Downlink Rx 809.2875 809.4875 810.7375 821.3500 821.4625 821.4875 821.9625 821.9875 822.1625 822.4625 822.4875 822.9625 822.9875 823.1875 823.2125 823.4625 823.4875 854.2875 854.4875 855.7375 866.3500 866.4625 866.4875 866.9625 866.9875 867.1625 867.4625 867.4875 867.9625 867.9875 868.1875 868.2125 868.4625 868.4875 929.5875 929.6125 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-17 of 51 4. 800MHZ CELL ENHANCER (50-118401) 4.1 800MHz Cell Enhancer Description The 800MHz system has 17 channels (channel selective) split into two groups of channels, (three and fourteen) in the downlink direction and a selected band covering the whole band in the uplink path. The system diagram shows the three channel portion of the cell enhancer (NJ Bus Data x 2 & Town of N. Bergen Police) which covers the 854-857MHz band. 4.2 800MHz Cell Enhancer Technical Specification PARAMETER Frequency ranges: Gain: Gain Adjustment: Uplink Power: Maximum uplink output: Downlink Power: Maximum downlink output power: Uplink IP3: Downlink Downlink Ch. module AGC level: Uplink Ch. module AGC level: Noise Figure: AGC: VSWR: RF Connectors: Shelf size: operational: Temperature range: storage: Case: Heatsinks: Finish: Handles: Fascia: Alarms Fitted: (volt-free contacts/TTL) SPECIFICATION 854-857MHz (downlink) 866-869MHz (downlink) 806-824 (uplink) >90dB 0 - 30dB (in 2dB steps) >1.0Watts +30.8dBm >5.0Watts +37.5dBm +44dBm +50dBm -17dBm -8dBm <6dB (at maximum gain) Fitted in channel modules better than 1.5:1 N type, female 8U -10°C to +55°C -40°C to +70°C Alocrom 1200 Matt black Silver anodised alloy Painted to RAL 7035 Downlink amplifiers Uplink amplifiers Each channel module Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-18 of 51 4.3 800MHz Cell Enhancer System Diagram, Drg. Nō. 50-118481 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-19 of 51 4.4 800MHz Seven Channel Module Shelf System Diagram, Drg. Nō. 50-118482 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-20 of 51 4.5 800MHz Cell Enhancer Uplink Path, Drg. Nō. 50-118483 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-21 of 51 4.6 800MHz Cell Enhancer Parts List AFL Part Nō. 02-004502 02-007206 05-002602 05-003801 10-000701 11-005902 11-006702 12-018002 12-021901 12-021902 14-000225 17-002101 17-002103 17-009127 20-001601 50-012825 50-012843 50-012844 50-027720 80-008901 80-090822 91-030002 91-130005 91-500001 91-510003 91-510032 91-600007 91-600014 91-600015 91-660001 96-700034 96-700035 96-920043 97-400005 99-200008 99-200017 Part Description 4P C/L SD FILTER 920MHz (3MHz B/W) SMA 900MHz 8 POLE 15-25MHz B/W "SMA" 900MHz SPLITTER/COMBINER, 20W 3WAY GEN.SPLIT 900MHz GEN.ASS 1/4W0-30dB SWITCHED ATTENUATOR 900MHz LOW NOISE AMP WITH RELAY ASS GA 800-1000MHz LNA 29dB PA 800-960MHz 20W CLASS A POWER AMPLIFIER 900MHz 1W +12V POWER AMPLIFIER 900MHz 2W +12V CASE RAIL LONG R.S.A./R.F.A. CHANNEL CONTROL MODULE 26WAY RIBBON CABLE LEAD CHAN MOD 810-860MHz 30KHz 8p TCXO 12V RELAY BOARD CCE RACK MOUNTED HEATSINK BRACKET CCE RACK 8U CHASSIS 400mm DEEP CCE RACK LID 400mm DEEP RACK MTD CHAN C.E. MODIFIED HEATSINK 12V RELAY PCB ASSEMBLY C/E 8U FRONT PANEL, AFL (RAL7035) N ADAPTOR PANEL FEMALE:FEMALE SMA BULKHEAD ADAPTOR F/F POWER PLG 3 PIN PNL.MOUNT NC-X 3 PIN R.ANGLE FREE SOC.NC-X. 20A SOCKET CONTACT PIN 'D' 9 WAY BLACK SHELL 'D' 9 WAY SOCKET S/B (NON FILTERED) 'D' 9 WAY PLUG S/B (NON FILTERED) 2W5 MIXED D TYPE SOCKET (7 WAY) LED RED 5mm IP67 LED GREEN 5mm IP67 20A CIRCUIT BREAKER (ETA 2-5700) HANDLE TYPE H6802 3U [ALLOY] DANGER HIGH VOLTAGE LABEL 2 x 2' CAUTION HEAVY LABEL 75 x 55mm Qty. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-22 of 51 5. POWER SUPPLY & ALARMS 5.1 800MHz Power Supply (80-231302) 5.1.1 800MHz Power Supply Description The power supply for the 800MHz cell enhancer uses 15V PSU modules ‘turned down’ to 12V (all the amplifiers in the 800MHz CE use 12V DC supply). It is a standard power supply shelf using two PSU modules with their outputs combined through power diodes and terminating in six, dedicated 12V outputs. Failure of either PSU module will trigger a nonlatching summary alarm, (short-term mains failures will allow the system to return to a ‘nonalarmed’ state). The alarm interface is on the alarm ‘D’ connector pins 1 & 2. 5.1.2 800MHz Power Supply Technical Specification PARAMETER Input: Outputs: Front panel indicators: Fuses DC Socket operational: Temperature range storage: Alarmed devices: Alarm interface (volt-free contacts): MTBF: Earthing: 5.1.3 SPECIFICATION 110V AC @50/60Hz (single port) 6 x 12V DC @ 20A each (x 2) Green LED for ‘PSU1/PSU2 ON’’ 1 x 20A each outlet socket XLR -10°C to +55°C -40ºC to +70ºC Either PSU failure ‘D’ type alarm connector, pins 1 & 2 >50,000 hours M8 stud 800MHz Power Supply System Diagram The system diagram is not available at the time of writing this document. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-23 of 51 5.1.4 800MHz Power Supply Outline Drawing, Drg. Nō. 80-231392 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-24 of 51 5.1.5 800MHz Power Supply Parts List AFL Part Nō. 13-003301 20-001601 80-008920 80-008921 80-008922 80-008925 80-020632 91-500025 91-510004 91-510035 91-520001 91-520005 91-520010 91-520032 91-600015 91-800014 91-800015 91-800016 91-800017 91-800028 91-800031 92-900014 93-510077 94-100004 95-100007 96-110034 96-110064 96-300057 96-600001 96-700034 96-700035 96-920023 97-400002 Part Description MAINS FILTER 8AMP ASSEMBLY 12V RELAY BOARD DUAL PSU HEATSINK DUAL PSU CASE DUAL PSU LID DUAL PSU FRONT PANEL 2U CHASSIS LID FIXING RAIL 3 PIN RIGHT ANGLE FREE PLUG NC-X 3 PIN PNL.MOUNT SOCKET NC-X 3 WAY MATE N LOK PLUG HOUSING PWR MAINS INL FIXED/SOLD.TERMS MAINS LEAD MAINS RETAINING CLIP MATE N LOK SOCKET CONTACT 20/14 AWG 'D' 9 WAY PLUG S/B (NON FILTERED) 3 WAY TERMINAL BLOCK TRIPLE DECK TERMINAL BLOCK TRIPLE DECK TERMINAL JUMPER TRIPLE DECK TERMINAL END DIN RAIL END-STOP SYMETRIC 35 x 7.5mm DIN RAIL DIN RAIL (TOP HAT) EARTH CLAMP M5 0R02 50W RESISTOR ALUMINIUM CLAD STPS12045TV 60A DUAL DIODE TX.FERRITE ISOL.HT.SINK B/ANOD FUSE HOLDER 16-30A, 32mm BODY ONLY FUSE HOLDER 16-30A, 32mm INSERT 15V 27A PSU 400W (XP BCC) INSULATING BOOT LARGE LED RED 5mm IP67 LED GREEN 5mm IP67 5A CIRCUIT BREAKER (ETA) HANDLE TYPE H6803 4U.[ALLOY] Qty. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-25 of 51 5.2 5.2.1 Alarm/Monitor Shelf (80-231303) Alarm/Monitor Shelf Description The alarm shelf acts as an alarm concentrator for all the alarms in the system. Firstly, within each shelf containing active components, the individually alarmed modules are ‘summed’ and presented to that shelves’ 9-way alarm connector as a volt-free relay contact pair. These alarm contact pairs are wired to the krone block in the lower rack space and from there the pairs are presented to the alarm shelf. At the alarm shelf the pairs are summed together to form an overall system alarm. In this way a system alarm may be broken down to scrutinise the shelf alarm and ultimately to the individual modules’ alarms. This shelf has its own dedicated mains-driven power 12V DC supply. As all the alarms in the system are ‘held closed loops’, should any power supply fail, the main system alarm will be triggered. 5.2.2 Alarm/Monitor Shelf Technical Specification PARAMETER SPECIFICATION Operating voltage: 12V (floating earth) 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: 25 Way ‘D’ Connector operational: :-10°C to +55°C Temperature range storage: :-40°C to +70°C Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-26 of 51 5.2.3 Alarm/Monitor Shelf Parts List AFL Part Nō. 19-000724 19-000725 19-000826 20-001601 91-520003 91-520005 91-520010 91-600014 91-600015 96-300072 96-600001 96-700034 96-700035 Part Description 1U 19" UNIT FRONT PANEL FAB 1U 19" UNIT 400 DEEP CHASSIS + BKT 2U,3U,4U 19" UNIT 400 DEEP LID 12V RELAY BOARD POWER SWITCHD/FUSED MAINS INL. MAINS LEAD MAINS RETAINING CLIP 'D' 9 WAY SOCKET S/B (NON FILTERED) 'D' 9 WAY PLUG S/B (NON FILTERED) 12V POWER SUPPLY TML15112C INSULATING BOOT LARGE LED RED 5mm IP67 LED GREEN 5mm IP67 Qty. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-27 of 51 6. SUB-UNIT MODULES Note that the sub unit modules are tabled in part number order – the modules pertinent to any particular shelf will be found in the parts list under the heading of that shelf. 6.1 6.1.1 Bandpass Filter (02-004502) 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. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 6.1.2 Technical Specification PARAMETER Response Type Frequency Range: Bandwidth: Number of Sections: Insertion Loss: VSWR: Connectors: Power Handling: Temperature operation: range: storage: Weight: SPECIFICATION Chebyshev 751-862MHz (tuned to spec.) 12MHz (tuned to spec.) 1.2 dB better than 1.2:1 SMA female 100W max -10°C to +60°C -20°C to +70°C 3 kg (typical) Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-28 of 51 6.2 6.2.1 Bandpass Filter (02-007206) 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. The tuned elements are silver-plated to reduce surface ohmic losses and maintain a good VSWR figure and 50Ω load at the input and output ports. Being passive devices, the bandpass filters should have an extremely long operational life and require no maintenance. Should a filter be suspect, it is usually most time efficient to replace the module rather than attempt repair or re-tuning. No adjustments should be attempted without full network sweep analysis facilities to monitor both insertion loss and VSWR simultaneously. 6.2.2 Technical Specification PARAMETER Response Type Frequency range: Bandwidth: Number of sections: Insertion Loss: VSWR: Connectors: Power Handling: Temperature operation: range: storage: Weight: SPECIFICATION Chebyshev 800 - 950MHz (tuned to spec.) 25MHz (tuned to spec.) 1.2 dB better than 1.2:1 SMA female 100W max -10°C to +60°C -20°C to +70°C 3 kg (typical) Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-29 of 51 6.7 6.7.1 900MHz Splitter/Combiner (05-002602) Description The 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. Being passive devices, the splitters should have an extremely long operational life and require no maintenance. Should a unit be suspect, it is usually most time efficient to replace the whole module rather than attempt repair or re-tuning. Being passive devices, the splitters should have an extremely long operational life and require no maintenance. Should a unit be suspect, it is usually most time efficient to replace the whole module rather than attempt repair or re-tuning. 6.7.2 Technical Specification PARAMETER Narrowband: Frequency range: Broadband: Narrowband: Bandwidth: Broadband: Input ports: Output ports: Narrowband: Insertion loss: Broadband: Return loss input & output: Impedance: Narrowband: Isolation: Broadband: MTFB: Splitting: Power rating: Combining: Connectors: Weight: Size: SPECIFICATION 815 – 960MHz 800 – 1200MHz 145MHz 400MHz 3.3dB 3.5dB 1.3:1 50Ω >20dB >18dB >180,000 hours 20Watts 0.5Watt SMA female 200g (approximately) 54 x 44 x 21mm (including connectors) Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-30 of 51 6.8 6.8.1 ¼Watt 0- -30 & 0-15dB Switched Attenuator (10-000701 & 10-000901) 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. 6.8.2 Switched Attenuators The AFL switched attenuators are available in two different types; 0 – 30dB in 2 dB steps, or 0 – 15dB in 1 dB steps. The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-31 of 51 6.9 Low Noise Amplifier (11-005902) 6.9.1 Description The Gallium-Arsenide 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 and extremely low noise 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. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 6.9.2 Technical Specification PARAMETER Frequency range: Bandwidth: Gain: 1dB Compression point: OIP3: Input/Output Return Loss: Noise Figure: Power consumption: Supply voltage: Connectors: operational: Temperature range: storage: Size: Weight: SPECIFICATION 800 – 960MHz <170MHz 19.5dB (typical) 21dBm 33dBm >20dB 1dB (typical) 190mA @ 24V DC 10-24V DC SMA female -10°C to +60°C -20°C to +70°C 90 x 55 x 30.2mm 0.28kg Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-32 of 51 6.10 Low Noise Amplifier (11-006702) 6.10.1 Description The Gallium-Arsenide low noise amplifiers used in the system are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise 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. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 6.10.2 Technical Specification PARAMETER Frequency range: Bandwidth: Gain: 1dB Compression point: OIP3: Input/Output return loss: Noise figure: Power consumption: Supply voltage: Connectors: operational: Temperature range: storage: Size: Weight: SPECIFICATION 800 – 1000MHz <200MHz 29dB (typical) 20dBm 33dBm >18dB 1.3dB (typical) 180mA @ 24V DC 10-24V DC SMA female -10°C to +60°C -20°C to +70°C 90 x 55 x 30.2mm 290gms (approximately) Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-33 of 51 6.11 20W Power Amplifier (12-018002) 6.11.1 Description This amplifier is a Class A 20W power amplifier from 800-960MHz in a 1 stage balanced configuration. It demonstrates a very high linearity and a very good input/output return loss (RL). It has built in a Current Fault Alarm Function. Its housing is an aluminium case (Alocrom 1200 finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 6.11.2 Technical Specification PARAMETER Frequency range: Small signal gain: Gain flatness: I/O Return loss: 1dB compression point: OIP3: Supply voltage: Supply current: Temperature operational: range storage: Weight: SPECIFICATION 800-960MHz 30dB ±1.2dB >18dB 42.8dBm 56dBm 24V DC 5.0Amps (Typical) -10°C to +60°C -20°C to +70°C <2kg (no heatsink) 6.11.3 PA 7-Way Connector Pin-outs Connector Pin A1 (large pin) A2 (large pin) Signal +24V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-34 of 51 6.12 800MHz 1Watt Low Power Amplifier (12-021901) 6.12.1 Description The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. 6.12.2 Technical Specification PARAMETER Frequency range: Bandwidth: Maximum RF output: Gain: 1dB compression point: 3rd order intercept point: Noise Figure: VSWR: Connectors: Supply: Temperature operational: range: storage: Weight: Size: SPECIFICATION 800-960MHz 20MHz (tuned to spec.) >1.0 Watt 15dB +30.5dBm +43dBm <6dB better than 1.5:1 SMA female 500mA @ 10-15V DC -10°C to +60°C -20°C to +70°C 0.5 kg 167x52x25mm 6.12.3 LPA 7-Way Connector Pin-outs Connector Pin A1 (large pin) A2 (large pin) Signal +24V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-35 of 51 6.13 D.I.P Channel Control Module (17-002101) 6.13.1 Description The operating frequency for each channel in each repeater is programmed by 16 DIL (Dual In Line) switches. The programming switches are mounted in the Channel Control Module. The Channel Selectivity Modules are connected to the Channel Control Module via multiway ribbon cables. Adjacent to the DIL switches for each channel is a toggle switch to turn on and off individual channels as required. A green LED indicates the power status of each channel. A red LED shows the alarm condition for each channel. An illuminated alarm LED indicates that the synthesiser has not achieved phase lock and that the module is disabled. There is a problem which requires investigation, often a frequency programmed outside the operating frequency range. The following information is necessary before attempting the programming procedure. 1) 2) 3) operating frequency synthesiser channel spacing (step size) synthesiser offset (IF) Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-36 of 51 6.13.2 Programming Procedure Check that the required frequency falls within the operational frequency limits of the Cell Enhancer. For each channel required, subtract the synthesiser offset from the required operating frequency and record the resulting local oscillator frequency. Divide each local oscillator frequency by the channel spacing and check that the result is an integer (i.e: no remainder). If the synthesiser division ratio is not an integer value, check the required operational frequency and repeat the calculation checking for mistakes. Convert the required local oscillator frequency to synthesiser programming switch state patterns according to the following table. 6.13.3 12.5kHz step size switch functions Switch Number 10 11 12 13 14 15 16 Synthesiser offset added when switch in UP position +12.5kHz +25kHz +50kHz +100kHz +200kHz +400kHz +800kHz +1.6MHz +3.2MHz +6.4MHz +12.8MHz +25.6MHz +51.2MHz +102.4MHz +204.8MHz +409.6MHz Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-37 of 51 6.13.4 25kHz step size switch functions Switch Number 10 11 12 13 14 15 16 Synthesiser offset added when switch in UP position +25kHz +50kHz +100kHz +200kHz +400kHz +800kHz +1.6MHz +3.2MHz +6.4MHz +12.8MHz +25.6MHz +51.2MHz +102.4MHz +204.8MHz +409.6MHz +819.2MHz 6.13.5 Programming Example Frequency required: 454.000MHz Channel spacing: 12.5kHz Synthesiser offset: -21.4MHz The Local Oscillator frequency is therefore: 454.000 – 21.4 = 432.600MHz Dividing the LO frequency by the channel spacing of 0.0125MHz: 432.600 = 34608 0.0125 This is an integer value, therefore it is OK to proceed. Local Oscillator Frequency 432.600 MHz Switch settings 16 15 14 13 12 11 10 1 0 0 0 0 1 1 Switch setting: 0 = switch DOWN (ON, frequency ignored ) 1 = switch UP (OFF, frequency added ) Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-38 of 51 6.13.6 17-002101 Controller Module DIP Switch Connector Data IDC PIN 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 25-way Connector 13 25 12 24 11 23 10 22 21 20 19 18 17 16 15 14 --- Function (12.5kHz steps) Freq. bit 1 (12.5kHz) Freq. bit 2 (25kHz) Freq. bit 3 (50kHz) Freq. bit 4 (100kHz) Freq. bit 5 (200kHz) Freq. bit 6 (400kHz) Freq. bit 7 (800kHz) Freq. bit 8 (1.6MHz) Freq. bit 9 (3.2MHz) Freq. bit 10 (6.4MHz) Freq. bit 11 (12.8MHz) Freq. bit 12 (25.6MHz) Freq. bit 13 (51.2MHz) Freq. bit 14 (102.4MHz) Freq. bit 15 (204.8MHz) Freq. bit 16 (409.6MHz) Module alarm Gain bit 1 Gain bit 2 Gain bit 3 Gain bit 4 +5V 0V Switched 12V 0V --- Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-39 of 51 6.13.7 Drg. Nō. 17-002190, DIP Switch Module Controller Outline Drawing ON CHANNEL 1 ON. ON. ON. POW ER 16 SWITCH 1 ON. SWITCH 16 ON. ON CHANNEL 4 CHANNEL CONTROL MODULE THIRD ANGLE PROJECTION OFF Tel : 01494 777000 Fax : 01494 777002 Aerial Facilities Limited England ON. SCALE ON CHANNEL 2 NTS POW ER 16 TOLERANCES PROGRAM ALAR M ON. DATE JD 11/11/94 APPD THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD. REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING BY AERIAL FACILITIES LTD. MATERIAL : FRONT PANEL-ALUMINIUM ALLOY FINISH : ALOCROM 1200 OFF NO DECIMAL PLACE ± 1mm ONE DECIMAL PLACE ± 0.3mm TWO DECIMAL PLACES ± 0.1mm PROGRAM ALAR M POW ER 16 BM DJL DRAWN CHKD PROGRAM ALAR M ALL DIMENSIONS ARE IN mm UNLESS OTHERWISE STATED PROGRAM ALAR M Aerial Facilities Limited TITLE PRODUCTION ISSUE (CR0962) ECN2646 10/4/96 25/1/99 1/10/02 DJL SEW DJL 3A CR0779 2A BY DJL 11/11/94 17-002190 DATE PRODUCTION ISSUE(CR0629) ISSUE DESCRIPTION No CHANNELISED CELL ENHANCER,CHANNEL DRAWING.No CONTROL MODULE,OUTLINE CUSTOMER Page:-40 of 51 Date:-05/08/05 Issue No:-A Handbook Nō.-Weehawken_800 POW ER 16 OFF ON OFF CHANNEL 3 Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook ON. 6.14 Channel Selective Modules (17-003033, 17-009143, 17-009127 & 17-010803) 6.14.1 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. The Channel Selectivity Module is an Up/Down frequency converter that mixes the incoming channel frequency with a synthesised local oscillator, so that it is down-converted to an Intermediate Frequency (IF) in the upper HF range. An eight pole crystal filter in the IF amplifier provides the required selectivity to define the operating passband of the Cell Enhancer to a single PMR channel. The same local oscillator then converts the selected IF signal back to the channel frequency. Selectivity is obtained from a fixed bandwidth block filter operating at an intermediate frequency (IF) in the low VHF range. This filter may be internal to the channel selectivity module (Crystal or SAW filter) or an externally mounted bandpass filter, (LC or Helical Resonator). Various IF bandwidths can therefore be accommodated. A synthesized Local Oscillator is employed in conjunction with high performance frequency mixers, to translate between the signal frequency and IF. The operating frequency of each channel selectivity module is set by the programming of channel selectivity module frequencies and is achieved digitally, via hard wired links, banks of DIP switches, or via an onboard RS232 control module, providing the ability to remotely set channel frequencies. Automatic Level Control (ALC) is provided within each channel selectivity module such that the output level is held constant for high level input signals. This feature prevents saturation of the output mixer and of the associated amplifiers. Alarms within the module inhibit the channel if the synthesised frequency is not locked. The synthesiser will not usually go out of lock unless a frequency far out of band is programmed. The channel selectivity module is extremely complex and, with the exception of channel frequency programming within the design bandwidth, it cannot be adjusted or repaired without extensive laboratory facilities and the necessary specialised personnel. If a fault is suspected with any channel selectivity module it should be tested by substitution and the complete, suspect module should then be returned to AFL for investigation. The channel selective modules fitted to the VHF cell enhancers in the Weehawken system are all hard-wired and therefore not adjustable, however, the modules fitted to the UHF and 800MHz enhancers have DIP switch controller modules fitted, allowing the set frequency to be changed on site. There is no functionality to change the frequencies remotely. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-41 of 51 6.14.2 Drg. Nō. 17-003080, Generic Channel Module Block Diagram Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-42 of 51 6.15 12 & 24V Dual Relay Boards (20-001601 & 20-001602) 6.15.1 Description The General Purpose Dual 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. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. Note that the board is available for different voltages (12 or 24V) depending on the type of relays fitted at RL1 and RL2. 6.15.2 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: Screw terminals operational: :-10°C to +55°C Temperature range storage: :-40°C to +70°C 6.16 12 & 24V Single Relay Board (80-008901 & 80-008902) 6.16.1 Description The General Purpose Single 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. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. Note that the board is available for different voltages (12 or 24V) depending on the type of relay fitted at RL1. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-43 of 51 9. INSTALLATION 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. 9.1 General Remarks The size and weight of the equipment racks mean that they represent a significant topple hazard unless they are securely bolted to the floor though the mounting holes in the base of the unit. In the interests of safety this should be done before any electrical, RF, or optical connections are made. The equipment must be located on a flat, level surface that is made from a material suitable for bearing the weight of the rack assembly. If the installer is in any doubt about the suitability of a site it is recommended that he consult with an appropriately qualified Structural Engineer. It is important in determining the location of the rack within the room that space is allowed for access to the front and rear of the equipment. To enable maintenance to be carried out, the doors must be able to fully open. The location must be served with a duct to allow the entry of cables into the rack. The mains power supply is connected to the terminal strip located on the bulkhead at the rear of the equipment at floor level. It is recommended that the connection is made by a qualified electrician, who must satisfy himself that the supply will be the correct voltage and of sufficient capacity. All electrical and RF connection should be completed and checked prior to power being applied for the first time. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-44 of 51 9.2 RF Connections All RF connections are made to the cable termination, located on the bulkhead at the rear of the equipment at floor level. 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 will be done if the base station transmitter is then keyed. Ensure that connections are kept clean and are fully tightened. 9.3 Commissioning Once all connections are made the equipment is ready for commissioning. To commission the system the test equipment detailed in Section 10.2 will be required. Using the system diagrams and the end-to-end test specification, the equipment should be tested to ensure correct operation. Typical RF levels that are not listed in the end-to-end specification, such as input levels to the fibre transmitters are detailed in the maintenance section of this manual. On initial power up the system alarm indicators on the front panels of the equipment should be checked. A red LED illuminated indicates a fault in that particular shelf that must be investigated before proceeding with the commissioning. A green LED on each shelf illuminates, to indicate that the power supply is connected to the shelf. In the event that any part of the system does not function correctly as expected, check all connections to ensure that they are to the correct port, that the interconnecting cables are not faulty and that they are tightened. The majority of commissioning difficulties arise from problems with the interconnecting cables and connectors. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-45 of 51 10. MAINTENANCE 10.1 Fault Finding 10.1.1 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 tunnel 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. External connectors not fitted or incorrectly fitted. Internal connectors becoming loose due to transport vibration. Wiring becoming detached as a result of heavy handling. Input signals not present due to faults in the aerial and feeder system. Base transmissions not present due to fault at the base station. Modems fitted with incorrect software configuration. Changes to channel frequencies and inhibiting channels. Hand held radio equipment not set to repeater channels. Hand held radio equipment not set to correct base station. 10.1.2 Fault Isolation 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 in 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. The return signal path from the mobile radio equipment to the base station is referred to as the uplink. The first operation is to check the alarms of each of the active units and determine that the power supplies to the equipment are connected and active. This can be achieved remotely (via CEMS, the RS232 Coverage Enhancement Management System, if fitted), or locally with the front panel LED’s. The green LED on the front panel should be illuminated, while the red alarm indicator should be off. If an Alarm is on, then that individual module must be isolated and individually tested against the original test specification. The individual amplifier units within the shelf have a green LED showing through a hole in their piggy-back alarm board, which is illuminated if the unit is working correctly. If an amplifier is suspect, check the DC power supply to the unit. If no other fault is apparent use a spectrum analyser to measure the incoming signal level at the input and then after reconnecting the amplifier input, measure the output level. Consult with the system diagram to determine the expected gain and compare result. In the event that there are no alarms on and all units appear to be functioning it will be necessary to test the system in a systematic manner to confirm correct operation. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-46 of 51 10.1.3 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. The expected downlink output for the given input can be found in the end-to-end test specification. 10.1.4 Uplink Testing the uplink involves a similar procedure to the downlink except that the frequencies used are those transmitted by the mobile equipment. 10.1.5 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. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-47 of 51 10.1.6 Fault repair Once a faulty component has been identified, a decision must be made on the appropriate course to carry out a repair. A competent engineer can quickly remedy typical faults such as faulty connections or cables. The exceptions to this are cable assemblies connecting bandpass filter assemblies that are manufactured to critical lengths to maintain a 50-ohm system. Care should be taken when replacing cables or connectors to ensure that items are of the correct specification. The repair of component modules such as amplifiers and bandpass filters will not usually be possible in the field, as they frequently require specialist knowledge and test equipment to ensure correct operation. It is recommended that items of this type are replaced with a spare unit and the faulty unit returned to AFL for repair. 10.1.7 Service Support Advice and assistance with maintaining and servicing this system are available by contacting Aerial Facilities Ltd. NOTE Individual modules are not intended to be repaired on site and attempts at repair will invalidate active warranties. Company policy is that individual modules should be repaired by replacement. Aerial Facilities Ltd maintains a high level of stock of most modules which can usually be despatched at short notice to support this policy. 10.2 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: Hand tools: 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. SMA male – N male, 1m long RG223. Philips #1&2 tip screwdriver. 3mm flat bladed screwdriver. SMA spanner and torque setter. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-48 of 51 10.3 Care of Modules 10.3.1 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. 10.3.2 Module Removal (LNA’s, general procedure): The following general instructions should be followed to remove a module: Remove power to the unit Remove all visible connectors (RF, DC & alarm) Release module retaining screws. Slowly but firmly, pull the module straight out of its position. Take care not to twist/turn the module during withdrawal. (When the module is loose, care may be needed, as there may be concealed connections underneath). 10.3.3 Module Replacement (general): Carefully align the module into its location then slowly push the module directly straight into its position, taking care not to twist/turn it during insertion. Reconnect all connectors, RF, alarm, power etc.,(concealed connectors may have to be connected first). Replace retaining screws (if any). Double-check all connections before applying power. 10.3.4 Power Amplifiers 1) Remove power to the unit. (Switch off @ 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. 4) There is (usually) a plate attached to the alarm board which fixes it to the amplifier, remove its retaining screws and the alarm board can be withdrawn from the amplifier in its entirety. On certain types of amplifier the alarm board is not mounted on a dedicated mounting plate; in this case it will have to firstly be removed by unscrewing it from the mounting pillars, in most cases, the pillars will not have not have to be removed before lifting the amplifier. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-49 of 51 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., against a wall in the case of wall mounted enclosures), then the fixing method for the heatsink will be from within the case, (otherwise the enclosure would have to be removed from the wall in order to remove the heatsink). When the heatsink has been removed, the amplifier may be unscrewed from the main casing by its four corner fixings and gently withdrawn. Fitting a new power amplifier module will be the exact reverse of the above. Note: Do not forget to apply fresh heatsink compound to the heatsink/main case joint and also between the amplifier and the main case. 10.3.5 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. Remove the alarm monitoring wires from (D type connector) pins 9 and 10. 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. Reconnect the DC supply connector and turn the mains switch on. Note: Tighten SMA connectors using only a dedicated SMA torque spanner. If SMA connectors are over-tightened, irreparable damage will occur. . Do not use adjustable pliers to loosen/tighten SMA connectors. Also take care not to drop or knock the module as this can damage (or misalign in the case of tuned passive modules) sensitive internal components. Always store the modules in an environmentally friendly location 10.3.6 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 AFL for investigation/repair must be so protected. Please contact AFL’s quality department before returning a module. Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-50 of 51 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. o/p power (E) Gain setting E-G Isolation required (Gain + 10dB) Service antenna gain (A) Service antenna feeder loss (C) Effective radiated power (ERP) E+A-C Attenuator setting CE gain-gain setting dBm dB dBm Value dBm dBm dB dB dB dB dBm dB If the input signal level in the uplink path is known and steady, use the following calculation table to determine the gain setting. If the CE features Automatic Gain Control the attenuator should be set to zero and if not, then the attenuation setting for both uplink and downlink should be similar. UPLINK CALCULATIONS Parameter Comments Input signal level CE max. o/p power (E) Gain setting Required isolation Donor antenna gain (B) Donor antenna feeder loss (D) Effective radiated power (ERP) E+B-D Attenuator setting (CE gain-gain setting) Value dBm dBm dB dB dB dB dBm dB Weehawken Tunnel 800MHz Repeater User/Maintenance Handbook Handbook Nō.-Weehawken_800 Issue No:-A Date:-05/08/05 Page:-51 of 51
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