PBE Europe as Axell Wireless 50-0606SERIES UHF Signal Extender User Manual RECEIVER MULTICOUPLER

Axell Wireless UHF Signal Extender RECEIVER MULTICOUPLER

manual

5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-1 of 545 Channel, Channelised Cell EnhancerMaintenance HandbookForAFL Works Order N.:Q108745Includes AFL product part N’s.: 50-060602 Downlink Amplifier50-060603 Uplink Amplifier50-060604 Power Supply
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-2 of 54Table of ContentsAMENDMENT LIST RECORD SHEET ................................................................................................. 4INTRODUCTION ....................................................................................................................................... 5Scope...........................................................................................................................................................................5Purpose.......................................................................................................................................................................5Glossary of Terms .....................................................................................................................................................6Key to AFL RF Module Drawing Symbols.............................................................................................................71. SAFETY CONSIDERATIONS ....................................................................................................... 81.1 Earthing of Equipment................................................................................................................................81.2 Electric Shock Hazard .................................................................................................................................81.3 RF Radiation Hazard...................................................................................................................................81.4 Chemical Hazard..........................................................................................................................................91.5 Emergency Contact Numbers .....................................................................................................................92. OVERVIEW/SYSTEM DESCRIPTION ..................................................................................... 103. SPECIFICATION .......................................................................................................................... 113.1 5 Channel Channelised Cell Enhancer 50-060601 Parts Lists ...............................................................113.1.1 Downlink Channelised CE 50-060602 Parts List.....................................................................................113.1.2 Uplink Channelised CE 50-060603 Parts List .........................................................................................123.1.3 Power Supply Shelf 50-060604 Parts List ...............................................................................................133.2 Technical Specification ..............................................................................................................................143.3 Mechanical Specification ...........................................................................................................................154. SYSTEM DRAWINGS .................................................................................................................. 164.1 Drg. Nō. 50-060682, Downlink Amplifier Shelf System Diagram..........................................................164.2 Drg. Nō. 50-060683, Uplink Amplifier Shelf System Diagram...............................................................174.3 Drg. Nō. 50-060684, Power Supply Shelf System Diagram ....................................................................185. SUB-UNIT MODULES.................................................................................................................. 195.1 Downlink Channelised Cell Enhancer 60-060602 (5U chassis) ..............................................................195.1.1 Bandpass Filters (02-010701) ..................................................................................................................195.1.1.1 Description.......................................................................................................................................195.1.1.2 Technical Specification ....................................................................................................................195.1.2 UHF 3dB Splitter (05-002603) ................................................................................................................205.1.2.1 Description.......................................................................................................................................205.1.2.2 Technical Specification ....................................................................................................................205.1.3 3dB UHF Splitter (05-002603) ................................................................................................................215.1.3.1 Description.......................................................................................................................................215.1.3.2 Technical Specification ....................................................................................................................215.1.4 ¼Watt 0- -30dB Switched Attenuator (10-000701).................................................................................215.1.4.1 General Application .........................................................................................................................215.1.4.2 Switched Attenuators........................................................................................................................215.1.5 Low Noise Amplifiers (11-007302 & 11-007402) ..................................................................................225.1.5.1 Description.......................................................................................................................................225.1.5.2 Technical Specification, (11-007302) ..............................................................................................225.1.5.3 Technical Specification (11-007402) ...............................................................................................225.1.5.3 Drg. Nō. 11-007302, LNA Assembly With Alarm Relay ..................................................................235.1.5.4 Drg. Nō. 11-007370, LNA RF Circuit Diagram...............................................................................245.1.5.5 Drg. Nō. 11-007371, LNA DC Wiring Diagram ..............................................................................255.1.5.6 Drg. Nō. 11-003971, LNA DC Circuit Diagram..............................................................................265.1.6 10Watt Power Amplifier (12-001901) .....................................................................................................275.1.6.1 Description.......................................................................................................................................275.1.6.2 Technical Specification ....................................................................................................................275.1.6.3 Drg. Nō. 12-001901, 10W PA PCB Sub-Assembly ..........................................................................285.1.6.4 Drg. Nō. 12-001970, 10W PA Circuit Diagram ..............................................................................29
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-3 of 545.1.6.5 Drg. Nō. 80-008450, PA to Alarm Board DC Wiring Details .........................................................305.1.7 3 Stage Amplifier Alarm Boards (12-002201).........................................................................................315.1.7.1 Description.......................................................................................................................................315.1.7.2 Technical Specification ....................................................................................................................325.1.7.3 Drg. Nō. 12-002201, 3 Stage Alarm Board Assembly Drawing & Parts List..................................335.1.7.4 Drg. Nō. 12-002270, 3 Stage Alarm Board Circuit Diagram..........................................................345.1.7.5 Generic Rack Shelf Enclosure Alarm Wiring Sketch .......................................................................355.1.8 Dual DC/DC Converter (13-001803).......................................................................................................375.1.8.1 Description.......................................................................................................................................375.1.8.2 Technical Specification ....................................................................................................................375.1.8.3 Drg. Nō. 13-001803, Dual DC/DC Converter Assembly Drawing..................................................385.1.8.4 Drg. Nō. 13-001872, Dual DC/DC Converter Circuit Diagram (12V/12V)....................................395.1.9 Channel Selective Module (17-003012) ..................................................................................................405.1.9.1 Description.......................................................................................................................................405.1.9.2 Drg. Nō. 17-003080, Generic Channel Module Block Diagram .....................................................415.1.10 24V Relay Board (20-001602).............................................................................................................425.1.10.1 Description ...................................................................................................................................425.1.10.2 Drg. Nō. 20-001602, 24V Relay Board Assembly Drawing.........................................................435.1.10.3 Drg. Nō. 20-001671, Relay Board Circuit Diagram....................................................................445.2 Uplink Channelised Cell Enhancer 50-060603 (5U chassis)...................................................................455.2.1 DC Tap Module (21-001701)...................................................................................................................455.7.1 Description ...............................................................................................................................................455.3 Power Supply Shelf 50-060604 (4U chassis).............................................................................................465.3.1 24V 410W Flat-Pack Power Supply (96-300054) ...................................................................................465.3.1.1 Description.......................................................................................................................................465.3.1.2 Technical Specification ....................................................................................................................465.3.2 48V/8A DC Power Supply Module (96-300056) ....................................................................................475.3.2.1 Description.......................................................................................................................................475.3.2.2 Technical Specification ....................................................................................................................476. INSTALLATION............................................................................................................................ 486.1 Initial Installation Record .........................................................................................................................487. MAINTENANCE............................................................................................................................ 497.1 General Procedures....................................................................................................................................497.1.1 Basic Fault Finding ..................................................................................................................................497.1.2 Downlink..................................................................................................................................................507.1.3 Uplink.......................................................................................................................................................507.1.4 Fault repair ...............................................................................................................................................507.1.5 Checking service ......................................................................................................................................517.1.6 Service Support ........................................................................................................................................517.2 Tools & Test Equipment............................................................................................................................517.3 Care of Modules .........................................................................................................................................527.3.1 General Comments...................................................................................................................................527.3.2 Module Removal (LNA’s, general procedure): .......................................................................................527.3.3 Module Replacement (general): ...............................................................................................................527.3.4 Power Amplifiers .....................................................................................................................................527.3.5 Low Power Amplifier Replacement.........................................................................................................537.3.6 Module Transportation:............................................................................................................................53APPENDIX A INITIAL EQUIPMENT SET-UP CALCULATIONS............................................... 54
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-4 of 54AMENDMENT LIST RECORD SHEETIssueNō.Date IncorporatedbyPage No.’sAmendedReason for new issue1 09/07/2003 CMH 1st IssueDocument Ref:-50-060601HBKM
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-5 of 54INTRODUCTIONScopeThis handbook is for use solely with the equipment identified by the AFL Part Numbershown on the front cover. It is not to be used with any other equipment unless specificallyauthorised by Aerial Facilities Limited. This is a controlled release document and, as such,becomes a part of Aerial Facilities’ Total Quality Management System. Alterations andmodification may therefore only be performed by Aerial Facilities Ltd.PurposeThe purpose of this handbook is to provide the user/maintainer with sufficient informationto service and repair the equipment to the level agreed. Maintenance and adjustments to anydeeper level must be performed by AFL, normally at the company’s repair facility inChesham, England.This handbook has been prepared in accordance with BS 4884, and AFL’s Qualityprocedures, which maintain the company’s registration to ISO 9001: 1994 and to theR&TTE Directive of the European Parliament. Copies of the relevant certificates and thecompany 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 NoticeThis manual is written for the use of technically competent operators/service persons. Noliability is accepted by AFL for use or misuse of this manual, the information containedtherein, or the consequences of any actions resulting from the use of the said information,including, but not limited to, descriptive, procedural, typographical, arithmetical, or listingerrors.Furthermore, AFL does not warrant the absolute accuracy of the information containedwithin 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 andpertinence of this document without notice.All AFL products carry a twelve month warranty from date of shipment. The warranty isexpressly on a return to base repair or exchange basis and the warranty cover does notextend to on-site repair or complete unit exchange.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-6 of 54Glossary of TermsRepeater orCell Enhancer A Radio Frequency (RF) amplifier which can simultaneouslyamplify and re-broadcast Mobile Station (MS) and BaseTransceiver Station (BTS) signals.Band Selective Repeater A Cell Enhancer designed for operation on a range of channelswithin a specified frequency band.Channel SelectiveRepeater A Cell Enhancer, designed for operation on specified channel(s)within a specified frequency band. Channel frequencies may befactory set, remotely set by computer, or on-site programmable.BTS Base Transceiver StationC/NR Carrier-to-Noise RatioDownlink (D.L.) RF signals transmitted from the BTS and to the MSUplink (U.L.) RF signals transmitted from the MS to the BTSEMC Electromagnetic CompatibilityGND GroundDC Direct CurrentAC Alternating CurrentID Identification NumberOIP3 Output Third Order Intercept Point = RFout +(C/I)/2LED Light Emitting DiodeM.S. Mobile StationN/A Not ApplicableN/C No ConnectionNF Noise FigureRF Radio FrequencyRx ReceiverTx TransmitterS/N Serial Number
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-7 of 54Key to AFL RF Module Drawing Symbols
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-8 of 541. SAFETY CONSIDERATIONS1.1 Earthing of EquipmentCell Enhancers supplied from the mains must be connected to grounded outlets and earthed inconformity with appropriate local, national and international electricity supply and safetyregulations.1.2 Electric Shock HazardElectrical shocks due to faulty mains driven power supplies.Whilst ever potentially present in any electrical equipment, such a condition would beminimised 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 suppliescan be dangerous because of the possibility of substantial arcing. Always switch off duringdisconnection and reconnection.1.3 RF Radiation HazardRF radiation, (especially at UHF frequencies) arising from transmitter outputs connected toAFL’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’sefficiency. No investigation should be carried out until all RF power sources have beenremoved. This would always be a wise precaution, despite the severe mismatch between theimpedance of an N type connector at 50, and that of free space at 377, which wouldseverely mitigate against the efficient radiation of RF power. Radio frequency burns couldalso 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 iscapable of producing RF field strengths, which may exceed guideline safe values especially ifused with antennas having appreciable gain. In this regard the use of directional antennaswith backscreens and a strict site rule that personnel must remain behind the screen while theRF power is on, is strongly recommended.Where the equipment is used near power lines, or in association with temporary masts nothaving lightning protection, the use of a safety earth connected to the case-earthing bolt isstrongly advised.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-9 of 541.4 Chemical HazardBeryllium Oxide, also known as Beryllium Monoxide, or Thermalox™, is sometimes usedin devices within equipment produced by Aerial Facilities Ltd. Beryllium oxide dust can betoxic if inhaled, leading to chronic respiratory problems. It is harmless if ingested or bycontact.Products that contain beryllium are load terminations (dummy loads) and some poweramplifiers. 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 internationalregulations, but pose no threat under normal circumstances. Only if a component containingberyllium oxide has suffered catastrophic failure, or exploded, will there be any danger of theformation of dust. Any dust that has been created will be contained within the equipmentmodule as long as the module remains sealed. For this reason, any module carrying theyellow 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 aReturned Materials Authorisation (RMA) number. Please quote this number on the packingdocuments, and on all correspondence relating to the shipment.PolyTetraFluoroEthylene, (P.T.F.E.) and P.T.F.E. Composite MaterialsMany modules/components in AFL equipment contain P.T.F.E. as part of the RF insulationbarrier.This material should never be heated to the point where smoke or fumes are evolved. Anyperson feeling drowsy after coming into contact with P.T.F.E. especially dust or fumesshould seek medical attention.1.5 Emergency Contact NumbersThe AFL Quality Department can be contacted on:Telephone +44 (0)1494 777000Fax +44 (0)1494 777002e-mail qa@aerial.co.uk
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-10 of 542. OVERVIEW/SYSTEM DESCRIPTIONThe AFL Channel Selective Cell Enhancer is a 2-way on-band repeater. Various models areavailable to cover frequency bands from 50MHz to 3000MHz. Its main sphere ofapplications is in urban areas where the topology is such that shadows occur in thepropagation pattern (for example within large buildings, conference centres and tunnels,etc.,)The Channel Selective Cell Enhancer is a 2-port device for direct connection to twoantennas, usually a highly directional Yagi or similar aligned towards the base (donor) siteand an omni-directional antenna to cover the mobiles. The frequency bands that are passedby the Cell Enhancer are set as per the specific customer requirements.AFL manufacture a wide range of Cell Enhancers, configured for each customer's specificrequirements. Two basic physical variants are available, a rack mounted version to fit in astandard 19" rack and an environmentally sealed wall mounted version which requires nofurther enclosure.The rack-mounted version is usually supplied in 3 units, a power supply unit and 2 RF units(one containing each path). Each shelf/tray unit containing active modules has a ‘D.C. on’indicator on the front panel and the PSU also has an ‘A.C. on’ indicator.The wall-mounted version is supplied in a single environmentally-protected case. Handlesare provided for carrying the unit and the door is fitted with locks. A supply isolator switchis fitted inside the unit and there are ‘.DC. on’ and ‘Alarm on’ indicators on the outside ofthe door.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-11 of 543. SPECIFICATION3.1 5 Channel Channelised Cell Enhancer 50-060601 Parts ListsAFL Part N.Description Qty.50-060602 D/L CCE 80dB 10W Q108330 150-060603 U/L CCE 80dB 10W Q108330 150-060604 PSU Q108330 1Modules described in the text are shown as highlighted in the parts list in the quantitycolumn. All fuses used in this equipment must be replaced with identical types asproscribed in the description column of the particular unit’s parts list.3.1.1 Downlink Channelised CE 50-060602 Parts List02-010701 5P 380MHz(V.B/W)X CPLING SMA POSTS 205-002603 UHF 3dB SPLITTER SMA 205-003803 3 WAY SPLITTER, UHF, ZINGER 410-000701 1/4W0-30dB SWITCHED ATTENUATOR 111-007302 LNA. 380-500MHz 20dB (C/W RELAY) GA 211-007402 LNA. 380-500MHz 30dB (C/W RELAY) GA 112-001901 PWR AMP.450MHz 20W GEN.ASSY 112-002201 3 STAGE AMPLIFIER ALARM BOARD 212-002220 3 STAGE ALARM PCB COVER 213-001803 DUAL DC/DC CONVERTER 24V-12V 1A 117-003012 CHAN MOD 450MHz, 15kHz (8p) BW 519-000826 2U,3U,4U 19" UNIT 400 DEEP LID 120-001602 24V RELAY BOARD 180-024420 5U CHASSIS FRONT PANEL 180-024421 5U CHASSIS 400mm DEEP 180-043320 HEATSINK 191-020004 N JACK PANEL UT-141 391-500001 POWER PLG 3 PIN PNL.MOUNT NC-X 191-510003 3 PIN R.ANGLE FREE SOC.NC-X. 191-600001 'D'TYPE 9 WAY PLUG S/B TERM 191-620001 'D' 25 WAY SOCKET S/B TERM 291-620006 'D' 25 WAY CONNECTOR SHELL 291-700017 ICD 15 WAY 0.1' CONNECTOR 492-340001 M3 x 8mm 'D'CONNECTOR SCREW LOCK 096-110001 FUSE HOLDER 20 x 5mm6.3A 196-110013 T 3.15 A ANTI SURGE FUSE 20mm 196-500005 DC INPUT FILTERS 196-600002 INSULATING BOOT SMALL 196-600003 INSULATING BOOT D.C. 197-400006 5U HANDLE [ALLOY] 2
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-12 of 543.1.2 Uplink Channelised CE 50-060603 Parts ListAFL Part N.Description Qty.02-010701 5P 380MHz(V.B/W)X CPLING SMA POSTS 205-002603 UHF 3dB SPLITTER SMA 205-003803 3 WAY SPLITTER, UHF, ZINGER 410-000701 1/4W0-30dB SWITCHED ATTENUATOR 111-007302 LNA. 380-500MHz 20dB (C/W RELAY) GA 211-007402 LNA. 380-500MHz 30dB (C/W RELAY) GA 112-001901 PWR AMP.450MHz 20W GEN.ASSY 112-002201 3 STAGE AMPLIFIER ALARM BOARD 212-002220 3 STAGE ALARM PCB COVER 213-001803 DUAL DC/DC CONVERTER 24V-12V 1A 117-003012 CHAN MOD 450MHz, 15kHz (8p) BW 519-000826 2U,3U,4U 19" UNIT 400 DEEP LID 120-001602 24V RELAY BOARD 121-001701 DC TAP PT FREEPORT 180-024420 5U CHASSIS FRONT PANEL 180-024421 5U CHASSIS 400mm DEEP 180-043320 HEATSINK 191-020004 N JACK PANEL UT-141 391-500001 POWER PLG 3 PIN PNL.MOUNT NC-X 291-510003 3 PIN R.ANGLE FREE SOC.NC-X. 191-600001 'D'TYPE 9 WAY PLUG S/B TERM 191-620001 'D' 25 WAY SOCKET S/B TERM 291-620006 'D' 25 WAY CONNECTOR SHELL 291-700017 ICD 15 WAY 0.1' CONNECTOR 492-340001 M3 x 8mm 'D'CONNECTOR SCREW LOCK 096-110001 FUSE HOLDER 20 x 5mm6.3A 196-110013 T 3.15 A ANTI SURGE FUSE 20mm 196-500005 DC INPUT FILTERS 196-600002 INSULATING BOOT SMALL 196-600003 INSULATING BOOT D.C. 197-400006 5U HANDLE [ALLOY] 2
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-13 of 543.1.3 Power Supply Shelf 50-060604 Parts List19-000826 2U,3U,4U 19" UNIT 400 DEEP LID 119-001021 4U 19" UNIT 400 DEEP CHASSIS + BKT 119-001024 4U 19" UNIT FRONT PANEL FAB 120-001602 24V RELAY BOARD 180-064120 HEATSINK 4U FLATPAC 16A 10W 191-500025 3 PIN RIGHT ANGLE FREE PLUG NC-X 191-510003 3 PIN R.ANGLE FREE SOC.NC-X. 191-510004 3 PIN PNL.MOUNT SOCKET NC-X 391-520001 PWR MAINS INL FIXED/SOLD.TERMS 391-520004 POWER MAINS INL.FREE R/ANGLE 391-600001 'D'TYPE 9 WAY PLUG S/B TERM 192-340001 M3 x 8mm 'D'CONNECTOR SCREW LOCK 093-560001 VARISTOR V275LA20A 196-300054 24V 17A PSU 400W (XP BCC) 196-300056 48V 6A PSU DIN RAIL (TRACO) 196-700034 LED RED 5mm IP67 INTEGRAL RES. 24V 196-700035 LED GREEN 5mm IP67 INTEGRAL RES 24V 296-900018 AC TRIP SWITCH (5 AMP M.C.B.) 297-400002 HANDLE TYPE H6803 4U.[ALLOY] 2
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-14 of 543.2 Technical SpecificationPARAMETER SPECIFICATIONDownlink Frequency Range: 453.30-453.75MHzUplink Frequency Range: 458.30-458.75MHz12.5kHz adjacent channel >20dBChannel Bandwidth selectivity:25kHz adjacent channel >80dBNumber of Channels: 5Number of ports: 2RF Connectors: N type, femaleImpedance: 50VSWR: Better than 1.5:1Sensitivity: 0.35 microvolts @ 12dB SINADDownlink Output Power:Uplink Output Power: 10 WattsUplink TOI: 50dBmDownlink TOI: 50dBmRF level per carrier: >+23dBmPassband ripple: <±1.5dBNoise figure: <6dB (@max gain)Gain: 96dBGain adjustment: 0-30dB (in 2dB steps)In band spurious: Better than –36dBmSpurious up to 3GHz: Better than –90dBcInput AC Supply: 120V ACConsumption: 150 WattsVolt-free relay contactsExcessive VSWRAlarms:Forward power dropMTBF: 80,000 Hrs.Housing: 19” Rack mounted
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-15 of 543.3 Mechanical SpecificationHeight: Eurorack Shelves(1U=44.5mm)Width: 19"Case Size:Depth: <500mm(excluding heatsinks, connectors, handlesand feet)operational: -10°C to +55°CTemperature Range: storage: -40°C to +70°CWeight: <30kg* (approximately)Humidity: 5 – 95% non-condensingRF Connectors: N type femaleEnvironmental Protection: IP54Case: AlocromHeatsinks: Matt blackFinish:Handles: AlocromSupply Cable:Unit supplied with suitable supply inputleads with connector and specified lengthof cable (where appropriate)* Note: Individual shelf weights unspecified.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-16 of 544. SYSTEM DRAWINGS4.1 Drg. N. 50-060682, Downlink Amplifier Shelf System DiagramDOWNLINK CCE 80dB 10WSYSTEM DIAGRAM50-0606821A-MNR 30/06/03BYDAT EDESCRIPT IO NNoISSUE123456789ABCDEF1 23456789ABCDEFFax : 01494 777002Tel : 01494 777000Aerial Facilities LimitedTHIS IS A PRO PRIETARY DESIG N O F AERIAL FACIL IT IES L TD.REPRO DUCTION OR USE OF THIS DESIGN BY OTHERS ISPERMISSIBL E O NL Y IF EXPRESSL Y AUTHORISED IN WRITINGBY AERIAL FACILITIES LTD.NO DECIM AL PL ACE ± 1 mmO NE DECIM AL PL ACE ± 0 .3 mmTWO DECIMAL PLACES ± 0.1mmAL L DIMENSIO NS ARE IN mmUNLESS OTHERWISE STATEDCHKDDRAWN APPDDAT ETOLERANCES SCALEEnglandCUSTO MER DRAWING .NoTITLE3AdBBANDPASS FILTER02-010701453-454MHzLNA11-00740231dB GAINATTENUATOR0-30dB10-000701 11-00730231dB GAINLNASPLITTER05-00260305-003803SPLITTER05-003803COMBINER05-002603COMBINER11-007302LNA21dB GAIN 28dB GAINPA12-001901F REQ UENCY PRO G RAM MING DAT AB/W=15kHzF REQ UENCY PRO G RAM MING DAT AB/W=15kHzF REQ UENCY PRO G RAM MING DAT AB/W=15kHzF REQ UENCY PRO G RAM MING DAT AB/W=15kHzF REQ UENCY PRO G RAM MING DAT AB/W=15kHz5 x 17-003012GAIN 20dBALC -15dBCHANNEL MODULE05-003803SPLITTER COMBINER05-003803BANDPASS FILTER458-459MHz02-010701BASEABP RODUCTION ISSUE MNR30/06/03
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-17 of 544.2 Drg. N. 50-060683, Uplink Amplifier Shelf System DiagramUPLINK CCE 80dB 10WSYSTEM DIAGRAM50-0606831A-MNR 30/06/03BYDAT EDES CRIP TIO NNoISSUE123456789ABCDEF1 23456789ABCDEFFax : 01494 777002Tel : 01494 777000Aerial Facilities LimitedTHIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES L TD.REP RO DUCT IO N O R USE O F THIS DESIG N BY O THERS ISPERMISSIBLE O NL Y IF EXPRESSL Y AUTHORISED IN WRITINGBY AERIAL FACIL ITIES L TD.NO DECIM AL PL ACE ± 1 mmONE DECIMAL PL ACE ± 0 .3mmTWO DECIMAL PL ACES ± 0 .1mmAL L DIMENSIO NS ARE IN m mUNL ESS OTHERWISE STATEDCHKDDRAWN APPDDATETO LERANCES SCALEEnglandCUST O MER DRAWING .NoTITLE3AdBBANDPASS FILTER02-010701458-459MHzLNA11-00740231dB GAINATTENUATOR0-30dB10-00070111-00730231dB GAINLNASPLITTER05-00260305-003803SPLITTER05-003803COMBINER05-002603COMBINER11-007302LNA21dB GAIN28dB GAINPA12-001901FREQ UENCY PRO G RAM MING DAT AB/W=15kHzFREQ UENCY PRO G RAM MING DAT AB/W=15kHzFREQ UENCY PRO G RAM MING DAT AB/W=15kHzFREQ UENCY PRO G RAM MING DAT AB/W=15kHzFREQ UENCY PRO G RAM MING DAT AB/W=15kHz5 x 17-003012GAIN 20dBALC -15dBCHANNEL MODULE05-003803SPLITTER COMBINER05-003803BANDPASS FILTER453-454MHz02-010701APRODUCTION ISSUE MNR30/06/03BMOBILEDC INJECTOR21-00170148VDC453.750MHz453.200MHz453.500MHz453.600MHz453.300MHzSS GD
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-18 of 544.3 Drg. N. 50-060684, Power Supply Shelf System DiagramPSU FOR 50-060602 AND 50-060603SYSTEM DIAGRAM50-0606841A-MNR 30/06/03BYDAT EDES CRIP TIO NNoISSUE123456789ABCDEF1 23456789ABCDEFFax : 01494 777002Tel : 01494 777000Aerial Facilities LimitedTHIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES L TD.REP RO DUCT IO N O R USE O F THIS DESIG N BY O THERS ISPERMISSIBLE O NL Y IF EXPRESSL Y AUTHORISED IN WRITINGBY AERIAL FACIL ITIES L TD.NO DECIM AL PL ACE ± 1 mmONE DECIMAL PL ACE ± 0 .3mmTWO DECIMAL PL ACES ± 0 .1mmAL L DIMENSIO NS ARE IN m mUNL ESS OTHERWISE STATEDCHKDDRAWN APPDDATETO LERANCES SCALEEnglandCUST O MER DRAWING .NoTITLE3A110V AC24V DCPSU 96-300054PSU 96-300056110V AC48V DCLNE110V AC24V DC TO 50-06060224V DC TO 50-06060348V DC TO 50-060603FOR DC INJECTORSPRODUCTION ISSUE MNR30/06/03LNE+-ENL+-1 +2 -2 -1 +2 -3 +CB13A3ACB2SS GD
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-19 of 545. SUB-UNIT MODULES5.1 Downlink Channelised Cell Enhancer 60-060602 (5U chassis)5.1.1 Bandpass Filters (02-010701)5.1.1.1 DescriptionThe bandpass filters are multi-section designs with a bandwidth dependent upon thepassband frequencies, (both tuned to customer requirements). The response shape isbasically Chebyshev with a passband design ripple of 0.1dB. The filters are of comblinedesign, 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-platedto reduce surface ohmic losses and maintain a good VSWR figure and 50 load at the inputand output ports.Being passive devices, the bandpass filters should have an extremely long operational lifeand require no maintenance. Should a filter be suspect, it is usually most time efficient toreplace the module rather than attempt repair or re-tuning.No adjustments should be attempted without full network sweep analysis facilities tomonitor both insertion loss and VSWR simultaneously.5.1.1.2 Technical SpecificationPARAMETER SPECIFICATIONPassband 453-454 MHzInsertion Loss 1.9 dB typical> 456 MHz > 55 dBRejection > 458-459 MHz > 60 dBPower Rating 50 WattImpedance 50 ohmVSWR Better than 1.2:1
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-20 of 545.1.2 UHF 3dB Splitter (05-002603)5.1.2.1 DescriptionThe 3dB Splitter/Combiner used is a device for accurately matching two or more RF signalsto single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs andensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports willbe terminated with an appropriate 50Ω load.5.1.2.2 Technical SpecificationPARAMETER SPECIFICATIONFrequency Range: 380 - 520 MHzBandwidth: 140 MHzInputs: 1Outputs: 2Insertion Loss: 3.5 dB (typical)Isolation: >18 dBReturn Loss (VSWR) – Input: Better than 1.3:1Return Loss (VSWR) – Output: Better than 1.3:1Impedance: 50 ςPower Rating – Splitter: 20 WattsPower Rating – Combiner: 0.5 WattConnectors: SMA femaleSize: 54 x 44 x 21 mm (including connectors)Weight: 200 g
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-21 of 545.1.3 3dB UHF Splitter (05-002603)5.1.3.1 DescriptionThe 3dB Splitter/Combiner used is a device for accurately matching two or more RFsignals to single or multiple ports, whilst maintaining an accurate 50Ω load to allinputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum.Any unused ports will be terminated with an appropriate 50Ω load.5.1.3.2 Technical SpecificationPARAMETER SPECIFICATIONFrequency Range: 400-500 MHzPower Rating: 5 WattsInsertion Loss: 5.2dB TypicalVSWR: 1.2:1Impedance: 50 OhmsConnectors: SMAWeight: <0.5KgsMechanical: Drawing No. 07-0038905.1.4 ¼Watt 0- -30dB Switched Attenuator (10-000701)5.1.4.1 General ApplicationIn many practical applications for Cell Enhancers etc., the gain in each path is found to beexcessive. Therefore, provision is made within the unit for the setting of attenuation ineach path, to reduce the gain.5.1.4.2 Switched AttenuatorsThe 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. The attenuation is simply set using the fourminiature toggle switches on the top of each unit. Each switch is clearly marked with theattenuation it provides, and the total attenuation in line is the sum of the values switchedin. They are designed to maintain an accurate 50 impedance over their operatingfrequency at both input and output.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-22 of 545.1.5 Low Noise Amplifiers (11-007302 & 11-007402)5.1.5.1 DescriptionThe low noise amplifiers used are double stage solid-state low-noise amplifiers. Class Acircuitry is used in the units to ensure excellent linearity over a very wide dynamic range.The active devices are very moderately rated to provide a long trouble-free working life.There are no adjustments on these amplifiers, and in the unlikely event of failure then theentire amplifier should be replaced. The two amplifiers are very similar in construction,the only difference is the biasing, which changes the gain figure, see tables below.5.1.5.2 Technical Specification, (11-007302)PARAMETER SPECIFICATIONFrequency range: 380-500MHzBandwidth: <140MHzGain: 20-22dB1dB Compression Point: +23.5dB (typical)3rd order intercept: +36dB (typical)Input/Output return loss: >20dBNoise figure: <1.3dBConnectors: SMA femaleSupply: 200-230mA @ 24V DCoperational: -10°C to +55°CTemperature range: storage: -30°C to +70°CWeight: <300gmsSize: 90 x 55 x 30.2 (case only)5.1.5.3 Technical Specification (11-007402)PARAMETER SPECIFICATIONFrequency range: 380-500MHzBandwidth: <140MHzGain: 30-32dB1dB Compression Point: +22dBm (typical)3rd order intercept: +34-35dBm (typical)Input/Output return loss: >20dBNoise figure: <1.3dBConnectors: SMA femaleSupply: 300-330mA @ 24V DCoperational: -10°C to +55°CTemperature range: storage: -30°C to +70°CWeight: <300gmsSize: 90 x 55 x 30.2 (case only)
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-23 of 545.1.5.3 Drg. N. 11-007302, LNA Assembly With Alarm RelayBYDAT EDES CRIPTIO NNoISSUE1 23 456 78 9ABCDEF123456789FEDABCFax : 01494 777002Tel : 01494 777000Aerial Facilities LtdTWO DECIMAL PLACES ± 0.1mmONE DECIMAL PL ACE ± 0 .3 mmNO DECIMAL PL ACE ± 1 mmBY AERIAL F ACIL IT IES L TD.PERMISSIBLE ONLY IF EXPRESSL Y AUTHORISED IN WRITINGREPRO DUCTION OR USE OF THIS DESIGN BY O THERS ISTHIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.DRAWN CHKDAL L DIM ENSIO NS ARE IN mmUNL ESS O THERWISE STAT EDAPPDDAT ET O L ERANCES SCALEEnglandCUSTO MER DRG.NoTITLEA3LOW NOISE AMPLIFIER 380-500MHz(20dB) ASSEMBLY DRAWING (WITH RELAY)11-0073021A1.5:1DBS 9/7/02PRODUCTION ISSUE9/7/02DBSCOMPONENTS TO BE ADDED TO 11-003912,ITEM 15,DC PCB SUB-ASSEMBLYAFLSENSITIV EDEVICESE LE C TR O S TA TI COBSERVE PRECAUTIONSATTENTIONFOR HA NDLIN GAFLAFL********11-007302380-500MHz20dB 10-24V DC**/**/20**REF .FREQ.GAINS/NDAT E0086IN34see note 2LABEL DETAILS - SCALE 1:135see note 2see note 231IN 4 PLACES2. LIDS,ITEMS 2 & 3 AND LABELS,ITEMS 31,34 & 35,TO BE FITTED ON TEST1. SOLDER JOINTS TO BE MADE USING OR2819OUT6IN 3 PLACES3DC PCB254732RF PCB15W6212 C21222CPL 1 R1C1RF O UTR1 9W7C2 15 C9R2R1 6 C5L1L3C4 C8+R4TR1L5 C1 2J31 J32W5W2 W12251017 24233227527220216 235242IN 2 PLACES426830R3 9REG 3J3 J1J2R5 0 R4 9R4 4R4 3RL 1CO N1CB IB
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-24 of 545.1.5.4 Drg. N. 11-007370, LNA RF Circuit DiagramBYDAT EDES CRIP TIO NNoISSUE123456789ABCDE1 23456789ABCDEFFax : 01494 777002Tel : 01494 777000Aerial Facilities LimitedTHIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES L TD.REP RO DUCT IO N O R USE O F THIS DESIG N BY O THERS ISPERMISSIBLE O NL Y IF EXPRESSL Y AUTHORISED IN WRITINGBY AERIAL FACIL ITIES L TD.NO DECIM AL PL ACE ± 1 mmONE DECIMAL PL ACE ± 0 .3mmTWO DECIMAL PL ACES ± 0 .1mmAL L DIMENSIO NS ARE IN m mUNL ESS OTHERWISE STATEDCHKDDRAWN FAPPDDAT ET O L ERANCES SCALEEnglandCUST O MER DRAWING .NoTITLE3ALOW NOISE AMPLIFIER 380-500MHz(20dB) RF PCB CIRCUIT DIAGRAM11-0073701A-DBS 5/7/02CLY2TR 2RF INPUTR151R11303- 3CPL11nFC3Ø1.6x6 turnsL23. 3pFC7L4330nHR3100R 10KR61nFC61nFC1C43. 3pFØ1.6x6 turnsL1330nHL3100RR2 R510KJ31C51nFTR 1CLY2560RR7100nHL6C101nFC91nFR4560R100nHL51nFC131nFC1251RR811303- 3CPL2R9R110R 0R100R 0W1W50R 0RF OUTPUT0R 0W60R 0R19HEADER PINHEADER PINJ32HEADER PINJ12HEADER PINJ11PRODUCTION ISSUE5/7/02DBS0R 0W20R 0W7ATTENUATOR GROUP(Select values on Test)DG SDGSECN2718 DBS19/9/022ACB IB
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-25 of 545.1.5.5 Drg. N. 11-007371, LNA DC Wiring DiagramBYDA T EDES CRIP TIO NNoISSUE123456789ABCDEF1 23456789ABCDEFFax : 01494 777002Tel : 01494 777000Aerial Facilities LimitedTHIS IS A PROPRIETARY DESIGN OF AERIAL FACIL ITIES L TD.REP RO DUCT IO N O R USE O F THIS DESIG N BY O THERS ISPERMISSIBLE O NL Y IF EXPRESSLY AUTHORISED IN WRITINGBY AERIAL FACIL ITIES L TD.NO DECIM AL PL ACE ± 1 mmONE DECIMAL PL ACE ± 0 .3mmTWO DECIMAL PL ACES ± 0 .1mmAL L DIMENSIO NS ARE IN m mUNL ESS OTHERWISE STATEDCHKDDRAWN APPDDATET O L ERANCES SCALEEnglandCUST O MER DRAWING .NoTITLE3ALOW NOISE AMPLIFIER. 380-500MHz(20dB) RF SCHEMATIC DIAGRAM11-0073711A-DBS 8/7/02LM7808CTREG 3GIO-veJ11 - J12DC INPUT DC O UT PUTRF PCBFOR CIRCUIT DIAGRAMSEE 11-007370SEE 11-003971FOR CIRCUIT DIAGRAMDC PCB+8V CBARFINPRODUCTION ISSUE8/7/02DBSOUTRFOC GOOD/0v BAD9 CON19REL AY CO NTACT G O O DREL AY COM MO NRELAY CONTACT BADPIN OUTS9 WAY 'D'TTL VO LTAG E SETTTL AL ARM/0v GOODGROUND10-24V DC I/P7 CON18 CON15 CON14 CON168754A3 CON12 CON132CO N115V 75mA-veJ31 - J32J31 1J32 2J12 2J11 15V 75mACB IB
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-26 of 545.1.5.6 Drg. N. 11-003971, LNA DC Circuit DiagramBYDA T EDES CRIP TIO NNoISSUE123456789ABCDEF1 23456789ABCDEFChesham(01494)778301Fax (01494)778910Aerial Facilities LimitedTWO DECIMAL PL ACES ± 0 .1mmONE DECIMAL PL ACE ± 0 .3mmNO DECIM AL PL ACE ± 1 mmBY AERIAL FACIL ITIES L TD.PERMISSIBLE O NL Y IF EXPRESSLY AUTHORISED IN WRITINGREP RO DUCT IO N O R USE O F THIS DESIG N BY O THERS ISTHIS IS A PROPRIETARY DESIGN OF AERIAL FACIL ITIES L TD.DRAWN CHKDUNL ESS OTHERWISE STATEDAL L DIMENSIO NS ARE IN m mAPPDDATET O L ERANCES SCALEEnglandCUST O MER DRAWING .NoTITLEA3DC PCB FOR LNA's AND LPA's,CIRCUIT DIAGRAM11-003971DJL 24/09/01PROTOTYPE ISSUEAA2 4 /9 /0 1DJLTHIRD ANGL E PROJECTIONR334K 7TR 7BCW71R3210KBCW71R314K 7TR 8R3410KR214K 7R2010KTR 1R24BCW71TR 2R234K 7R2210KTR 3R254K 710KBCW71R11120RR123K 6270KR10R91KC2100nR6100KR4100KR8270K1KR72+C8REG1IOA1KR47+C4 +C5R43 R44 R45+C10100nC11IC28534C1510uC17 +C16100nR52+C1434IC3285R491K REG2IOAR51 R50+C13R461KR481KR39 R40R38100RR42VR1R41+-123-+567-2+31R53R54R55RL11R351KTR 4TR 6R161KR172K 222KR18R19560RR152K 4+C3R143KR3100KR2120R100KR5R290R1K 8R14K 7R3656RR27R134K 7TR 5FZT751BCW711UBCW713V 3D39-+10812+-13146-+57IC1:CIC1:BIC1:D114LM 324MLM 324MLM 324MIC1:ALM324MZD 11. 23VLL4148D2 LE D 1IC4:BIC4:A+C121u10u+C910u1u 1u>12V DC I/P10uZD 35. 1V 10u470RR56R57D1LL4148CON 1 1J2 29CON 1CON 184CON 15CON 1CON 13RL1/1ZD 2C19100n48LM 337LM10u10uLL41481. * IF APPLICABLE, VALUES WILL BE DETERMINED AT A HIGHER LEVEL BOMI C L7660CI C L7660CLM 337LM2J2 11J12J52J11J51J32J42J31J4CON 1+C11uC7470p+C610u+C181u2. CONNECTORS J1-5 TO BE FITTED AS NECESSARYPRODUCTION ISSUE(ECN2359)26/11/01TAS1AV_OUTV_INBCA**********P3*R587CON 1R591KCB IB2A ECN25181 7 /4 /0 2DJLP5P4RL1/2 P8P6P7P1P2R280R********3A ECN26862 5 /7 /0 2DJL
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-27 of 545.1.6 10Watt Power Amplifier (12-001901)5.1.6.1 DescriptionThe power amplifier fitted to this unit is a multi-stage, solid state class A poweramplifier. All the semi-conductor devices are very conservatively rated to ensure lowdevice junction temperatures and a long, trouble free working lifetime. The amplifier wasoriginally designed to have a 20W power output, but in this instance, the biasing ischanged to give the device a 10W rating.The power amplifier should require no maintenance over its operating life. Under nocircumstances should the cover be removed or the side adjustments disturbed unless it iscertain that the amplifier has failed; since it is critically aligned during manufacture andany re-alignment will require extensive test equipment.5.1.6.2 Technical SpecificationPARAMETER SPECIFICATIONFrequency Range: 400 - 500MHz (tuned to spec.)Bandwidth: 20MHz (typical, tuneable)Maximum Output Power: >10WGain: 28dB3rd Order Intercept Point: <+51dBm1dB Compression Point: <+40dBmVSWR: better than 1.45:1Connectors: SMA femaleSupply: 2.5A @ 24V DCoperational:-10°C to +55°CTemperature range:storage: -40°C to +70°CSize: 276 x 78 x 40mm (case only)Weight: 1.5 kg (excluding heatsink)
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-28 of 545.1.6.3 Drg. N. 12-001901, 10W PA PCB Sub-AssemblyASS0 1 3 0POWER AMPLIFIER,450MHz,20WGENERAL ASSEMBLY12-001901 2A1:1DBS 17/09/921511412014 P0 SNS241681184911842022421212324182414519211IN 4 PO SNS261012 P0 SNS18123111IN 2 PL ACES11IN 3 PLACESDATEDESCRIP TIONNoISSUETHIRD ANGLE PROJECTIONUSE D O NSTO CK REF :DRAWN DATECHKD APPDALL DIMENSIONS ARE IN mmUNLESS OTHERWISE STATEDTHIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.RE PRODUCTION OR USE OF THIS DES IGN B Y OTHE RS I SPERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITINGBY AERIAL FACILITIES LTD.TO LE R A N C E SNO DECIMAL PLA CE ± 1mmONE DECIMAL PLACE ± 0.3mmTWO DECIMAL PLACES ± 0.1mmSCALETI TLECUSTOME R DRG.No ISSAerial Facilities LtdEnglandLittle Chalfont(0494)763636Fax (0494)7648382ATRIM 2 TABSTO SUIT PCB.FIT WITH CHAMFEREDT AB IN DIRECTIO NSHOWN -->FIT WITH CHAMFEREDTAB IN DIRECTIO NSHOWN -->IN 2 PO SNSORPLAN VIEW WITH LID REMO VED1 PRO DUCTIO N ISS UE16/9/92DBSCOMPL ETE AL L SOL DERING USING ITEMEA CH SIDEIN 2 POSNSIN 2 PO SNSIN 2 POSNSR107L101FB 10 1C102GR101C101C 104C 103BC120COUPLER 1C112C110C111C113++TR 10 1ECC105FB 10 2L102R102EC114++C115REG101C106 C107L103R104L104L105FB 10 5/L106C118EEBECETR 10 2R 103R105+C117FB 106C119++C4C122C121C123+C12C11+C13+C10 +L1FB 1C2GINPUTC1C3BDETAIL D12- 1925- 2Issue 3Aerial FacilitiesLi m i t edR106C14R2EL2FB 2REG1C17C18++C15C16++FB 5L5TR 1CC5L3C6 C7R E G 102REG2C116+R108C20TR 2L4R3FB 6L6EEBECEOUTP UTC109C108 GCOUPLER 224V DC INPUTC8R1C9 G13/ 6/ 94DJL2 CR05212A PRODUCTION ISSUE (CR0962)23/ 12/ 98SEW
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-29 of 545.1.6.4 Drg. N. 12-001970, 10W PA Circuit Diagram
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-30 of 545.1.6.5 Drg. N. 80-008450, PA to Alarm Board DC Wiring Details
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-31 of 545.1.7 3 Stage Amplifier Alarm Boards (12-002201)5.1.7.1 DescriptionAmplifier Alarm Boards are fitted to monitor the bias conditions of AFL Class Aamplifiers which remain constant in normal operation. Any departure from normal biasconditions 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 voltageof 1.20V across the collector current setting resistor. The Amplifier Alarm Board is awindow comparator device, which is adjusted to sense a departure from this condition.Several different alarm outputs are provided to simplify interfacing, (Relay Contact, OpenCollector, and TTL Logic Levels)The basic version of the Alarm Board (12-002801) monitors a single amplifier stage. Athree-stage version (12-002201) is used on complex amplifiers where three separatecomparators have their outputs logically combined to a common output stage. Failure ofany one stage will activate the alarms.Note that the alarm board has a green Light Emitting Diode located near to the centre ofthe printed circuit board, which is illuminated on ‘Good’, and extinguished on ‘Alarm’. Itis therefore a simple matter to identify an active module failure, by searching for anAlarm Board which has its green LED extinguished. A simple test of the alarm board ispossible by shorting across the monitor inputs, pins 1 and 2, 3 and 4 or across pins 5 and6. This last monitor input is inactive if the board has been converted to a two way alarmboard. (Refer to relevant amplifier alarm wiring diagram.)1) Volt-free change over relay contacts.2) Open collector NPN transistor pulls low on alarm.3) TTL driver.The use of precision voltage sources and resistors has eliminated the need for initialadjustment or calibration, and the board will function correctly with a wide variation inpower supply voltage (8 to 30 volts, nominal supply is 12 or 24Volts).There are two selectable link options on the three-way board:LINK1 - Removed to convert to two-way alarm board.LINK2 - Removed to isolate 0V from chassis earth.The one way alarm board only has the 0V isolation link (LINK2) fitted.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-32 of 545.1.7.2 Technical SpecificationPARAMETER SPECIFICATIONOperating voltage: 8 to 30V (floating earth)Alarm Threshold: Vcc - 1.20 volt +15%Alarm output relay contacts:Max. switch current: 1.0AmpMax. switch volts: 120Vdc/60VAMax. switch power: 24W/60VAMin. switch load: 10.0µA/10.0mVRelay isolation: 1.5kVMechanical life: >2x107 operationsRelay approval: BT type 56Connector details: 15-way 0.1" pitchoperational: -10°C to +55°CTemperature range: storage: -40°C to +70°C74 x 56mm (3 stage)PCB Size: 54 x 56mm (1 stage)
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-33 of 545.1.7.3 Drg. N. 12-002201, 3 Stage Alarm Board Assembly Drawing & PartsList
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-34 of 545.1.7.4 Drg. N. 12-002270, 3 Stage Alarm Board Circuit Diagram
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-35 of 543 STAGE AMPLIFIER ALARM BO ARDCIRCUIT DIAG RAM12-0022701N.T .SM R B 11/ 8/ 93BYDATEDESCRIP TIONNoISSUE1234 5 678 910 11 12 13 14 15 16 17 18ABCDEFGHIJKLMABCDEFGHIJKL1 2 3 4 5 6 7 8 9 101112 13 1415 1617 18MUNLESS OTHERWISE STATEDALL DIMENSIONS ARE IN mmDRAWN CHKDCUSTOMER DRAWING NoPERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITINGTHIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.NO DECIMAL P LA CE ± 1mmTWO DECIMAL PLACES ± 0.1mmONE DECIMAL PLA CE ± 0.3mmBY AERIAL FACILITIES LTD.REPRODUCTI ON OR USE OF THIS DESIGN BY OTHERS ISAPPDDATETOLE RANCES SCA LETel : 01494 777000Fax : 01494 777002Ae ria l Fa cilitie s Lim ite dEng landTI TLE1A+-IC1+-IC1+-IC1+-IC1CONN11TTL A LA R MCONN+5v TTL I N12CONN0V15CONNALARM 0v14CONNO/C ALARM137+8v TO +30vCONN1CONNCONN2CONN3CONN4CONN5CONN6MONITOR 1INPUTHI LOW HIMONITOR 2INPUTLO W HIMON I TOR 3INPUTLO W9CONNCONN10CONN8CONTACTSALARMR11K 8+-IC3567R2120RR3120RR43K 6R6100KR5100KR7100KR91K231+-IC3411R111K100KR151KR17100KR23100KR221KR19100KR14100KR13100KR21R251KR271KR372K 4R39560RR26270K270KR18R24100KR28270KR20270KR16100KR10270KR8100KR12270KR424K 7R294K 7R351KR402K 2R4122KR381KR363K2K 2R304K 7R324K 7R3410KR3310KR31TR 3BCW71BCW71TR 2BCW71TR 1657+-IC21098+-IC3324111121314+-IC3+-IC21213141098324111+-IC2+-IC25671098121314D11. 23vSR12D+C11uFC2100n1uC7100nC3100nC41. 0C83v3D9TR 6FZT751TR 4BCW71 BCW71TR 4100nC6LK 2D7D6LK 1D4D5D2D3D8LE D 1REL-RL1+OP AMP67RL1/28+7. 5v+7. 5v2+7. 5v +7. 5vVCC VCC0v 0vCR0508 14/1/94 MRBI C 1 , I C 2 & I C 3 = LM 324A MA LL D I O D E S = LL4148 U N LE S S M A R K E D O TH E R W I S E4RL2/2 32NOT USEDVCCPRODUCTION ISSUE 11/ 9/93 MRBPRODUCTION ISSUE 29/8/00 MNR22A0vRB RB5.1.7.5 Generic Rack Shelf Enclosure Alarm Wiring Sketch
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-36 of 54
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-37 of 545.1.8 Dual DC/DC Converter (13-001803)5.1.8.1 DescriptionThis unit is employed where it is necessary to derive two fixed voltage power supply railsfrom some higher voltage. Typically it is used to derive 5, 8, 12 or 15V from a 24V input.The circuit is based upon a pair of LM257 series variable voltage regulators (LM2576, 12& 15V & LM2575, 5V), which are each capable of supplying an absolute maximum of1.5A output current. Note that at full output current, the dissipation of the device mustremain within design limits, bearing in mind the voltage which is being dropped across it.The maximum allowable dissipation will also depend on the efficiency of the heatsink onwhich the device is mounted.5.1.8.2 Technical SpecificationPARAMETER SPECIFICATIONOperating Voltage: 21 – 27V DCOutput Voltages: 12.0V & 12.0V (typical)Output Current: 1.0A (maximum per o/p)Connections: Screw Terminal Blockoperational:-10ΒC to +55ΒCTemperature range:storage: -40ΒC to +70ΒCPCB Size: 85 x 63mm
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-38 of 545.1.8.3 Drg. N. 13-001803, Dual DC/DC Converter Assembly DrawingDUAL DC-DC CONVERTER(24V-12V/12V)PCB SUB-ASSEMBLY13-0018031A1:1MNR 07/03/023IN 2 PLACES124 6 5IN 2 PLACES810967BYDAT EDESCRIPTIO NNoISSUE1 2345678 9ABCDEF1 2345678 9ABCDEFFax : 01494 777002Tel : 01494 777000Aerial Facilities LimitedTHIS IS A PROPRIETARY DESIG N OF AERIAL FACILITIES LTD.REPRO DUCTIO N O R USE O F T HIS DESIG N BY OT HERS ISPERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITINGBY AERIAL FACILITIES LTD.NO DECIM AL PL ACE ± 1 mmONE DECIMAL PLACE ± 0 .3mmTWO DECIMAL PL ACES ± 0.1mmAL L DIM ENSIO NS ARE IN mmUNL ESS OTHERWISE STATEDCHKDDRAWN APPDDAT ET OL ERANCES SCA L EEnglandCUSTO MER DRAWING.NoTITL E3APRODUCTION ISSUE MNR07/03/02+C1+L30v+15vC1 0C7C4+24v0v 0vL4C5C8D1k+C9C6+5vC1 1L5+C2C3D2 k+IC2IC1L11515L2ALL SOLDER JOINTS TO BE MADE USING 16 .STAGE 1STAGE 2IN 2 PLACES IN 2 PLACES IN 2 PLACESIN 2 PLACESGB BB
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-39 of 545.1.8.4 Drg. N. 13-001872, Dual DC/DC Converter Circuit Diagram (12V/12V)C3L5C2C1L3C4L1L2C6L4C8 C5D2D1C11C10C7C9DUAL DC-DC CONVERTOR (24V-12V/12V)CIRCUIT DIAGRAM13-0018721AN.T.SMNR 11/03/0212435245130V+12VOUTPUT(1 Amp)0V+12V+24V0VOUTP U TINPUTIC1LM2576T12IC2LM2576T12UF5400330uH470uF 100nFUF5400470uF100uFUSE IN CONJUNCTION WITH ASSEMBLY DRAWING 13-001803VinO/PO n /O ffGndF/BkGnd On/OffVinF/BkO/P+++100u330uH100nF100uH100uH100nF 100nF0.47uF0.47uF+2.2uF2.2uF+BYDATEDESCRIPTIONNoISSUE1 234 5 678 9ABCDEF123456789ABCDEFFax : 01494 777002Tel : 01494 777000Aerial Facilities LimitedTHIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.REPRODUCTIO N O R USE O F THIS DESIGN BY O THERS ISPERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITINGBY AERIAL FACIL IT IES L TD.NO DECIMAL PL ACE ± 1 m mONE DECIMAL PLACE ± 0.3mmTWO DECIMAL PL ACES ± 0 .1 m mAL L DIMENSIO NS ARE IN mmUNLESS O THERWISE STATEDCHKDDRAWN APPDDAT ET OL ERANCES SCAL EEnglandCUSTO M ER DRAWING.NoTITLE3APRODUCTION ISSUE11/03/02MNR12V12VECN2581 MNR28/06/022ACH BB
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-40 of 545.1.9 Channel Selective Module (17-003012)5.1.9.1 DescriptionThe channel selectivity module is employed when the Cell Enhancer requirement dictatesthat very narrow bandwidths (single operating channels), must be selected from withinthe operating passband. One channel selectivity module is required for each channel.The Channel Selectivity Module is an Up/Down frequency converter that mixes theincoming 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 crystalfilter in the IF amplifier provides the required selectivity to define the operating passbandof the Cell Enhancer to a single PMR channel. The same local oscillator then converts theselected IF signal back to the channel frequency.Selectivity is obtained from a fixed bandwidth block filter operating at an intermediatefrequency (IF) in the low VHF range. This filter may be internal to the channel selectivitymodule (Crystal or SAW filter) or an externally mounted bandpass filter, (LC or HelicalResonator). Various IF bandwidths can therefore be accommodated. A synthesized LocalOscillator is employed in conjunction with high performance frequency mixers, totranslate between the signal frequency and IF.The operating frequency of each channel selectivity module is set by the programming ofchannel 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 toremotely set channel frequencies.Automatic Level Control (ALC) is provided within each channel selectivity module suchthat the output level is held constant for high level input signals. This feature preventssaturation 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 isprogrammed.The channel selectivity module is extremely complex and, with the exception of channelfrequency programming within the design bandwidth, it cannot be adjusted or repairedwithout extensive laboratory facilities and the necessary specialised personnel. If a faultis suspected with any channel selectivity module it should be tested by substitution andthe complete, suspect module should then be returned to AFL for investigation.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-41 of 545.1.9.2 Drg. N. 17-003080, Generic Channel Module Block Diagram
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-42 of 545.1.10 24V Relay Board (20-001602)5.1.10.1 DescriptionThe General Purpose Relay Board allows the inversion of signals and the isolation ofcircuits. It is equipped with two dual pole change-over relays RL1 and RL2, withcompletely isolated wiring, accessed via screw terminals.Both relays are provided with polarity protection diodes and diodes for suppressing thetransients caused by "flywheel effect" which can destroy switching transistors or inducespikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals intoone, 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 ofrelays fitted at RL1 and RL2.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-43 of 545.1.10.2 Drg. N. 20-001602, 24V Relay Board Assembly Drawing
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-44 of 545.1.10.3 Drg. N. 20-001671, Relay Board Circuit Diagram
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-45 of 545.2 Uplink Channelised Cell Enhancer 50-060603 (5U chassis)5.2.1 DC Tap Module (21-001701)5.7.1 DescriptionDC taps are used where it is necessary to inject a DC source ‘through’ an RF signal pathso that equipment in a remote location may be sourced with DC power (where it may beimpractical to have mains power). Where used, it will always be that one DC tap moduleis used at each ‘end’ of the DC source, one to supply the DC onto the RF signal, and oneto remove it at its ultimate destination. The modules are designed for minimum insertionloss (and minimum DC volt-drop) at the operating frequency. They are purely passivedevices, and should need no maintenance over their operating lifetime.All other modules in this shelf have been described in the downlink Cell Enhancersection 5.1.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-46 of 545.3 Power Supply Shelf 50-060604 (4U chassis)5.3.1 24V 410W Flat-Pack Power Supply (96-300054)5.3.1.1 DescriptionThe power supply unit is a switched-mode type capable of supplying 24V DC at 17.0Ampscontinuously. Equipment of this type typically requires approximately 5-7.0 Amps at 24VDC, 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 outputvoltage from the power supply may be measured on its output terminals. This is typically setto 24.5V.All the PSU’s used in AFL Cell Enhancers are capable of operation from either 110 or 220Vnominal AC supplies. The line voltage is sensed automatically, so no adjustment or linksetting is needed by the operator. The PSU modules are O.E.M devices and therefore nodrawings are available.5.3.1.2 Technical SpecificationAC Input Supply:Voltage: 110 or 220V nominal - 90 to 132 or 180 to264V (single phase, absolute limits)Frequency: 47 to 63HzDC Output Supply:Voltage: 24V DC (nominal), 22 to 26V(absolute limits)Current: 17.0Aoperational: -10ΒC to +55ΒCTemperaturerange: storage: -40ΒC to +70ΒC
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-47 of 545.3.2 48V/8A DC Power Supply Module (96-300056)5.3.2.1 DescriptionThis PSU module is similar in size and type to the 24V module, being a multi-mains-voltage switch mode unit but having a 48V DC output. The unit is used to power theremote amplifier unit via the DC Tap Module (see section 5.2.1). A small volt drop fromthe 48V PSU to the remote cell enhancer is expected so that the DC voltage may be easilyconverted to 24V to power the remote enhancers’s electronics.5.3.2.2 Technical SpecificationAC Input Supply110 or 220V nominalVoltages: 90 to 132 or 180 to 264V (absolute limits)Frequency: 47 to 63HzDC Output Supply:48V DC (nominal)Voltage: 45-50V (absolute limits)Maximum Output Current: 6Aoperation: -10ΒC to +55ΒCTemperaturerange storage: -40ΒC to +70ΒCAll other modules in this shelf have been described elsewhere in this document.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-48 of 546. INSTALLATION6.1 Initial Installation RecordWhen this equipment is initially commissioned, please use the equipment set-up record sheetin Appendix A. This will help both the installation personnel and AFL should these figuresbe needed for future reference or diagnosis.Installation will be a matter of securing each shelf into its appropriate place in the rackcabinet, connecting all the cables (RF, DC and alarm ) to their correct ports/connectors andsystem testing (at the customer’s discretion) to prove the original specification. Powershould not be applied until all connections have been double-checked and verified.Refer to the system drawing(s) in section 4. for cabling details.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-49 of 547. MAINTENANCE7.1 General Procedures7.1.1 Basic Fault FindingIn the event that the performance of the system is suspect, a methodical and logical approachto the problem will reveal the cause of the difficulty. The System consists of modules fittedwithin shelves or trays and all housed within a standard 19” rack type cabinet.Transmissions from the main base stations are passed though the system to the mobile radioequipment; this could be a handheld radio or a transceiver in a vehicle. This path is referredto as the downlink. The return signal path from the mobile radio equipment to the basestation is referred to as the uplink.The first operation is to check the alarms of each of the active units and determine that thepower supplies to the equipment are connected and active.This can be achieved remotely (via CEMS, the RS232 Cell Enhancer Management System,if fitted), or locally with the front panel LED’s. The green LED on the front panel should beilluminated, while the red alarm indicator should be off.If an Alarm is on, then that individual shelf must be individually tested against the originaltest specification.The individual amplifier units within the shelf have a green LED showing through a hole intheir 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 isapparent use a spectrum analyser to measure the incoming signal level at the input and thenafter reconnecting the amplifier input, measure the output level. Consult with the systemdiagram 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 benecessary to test the system in a systematic manner to confirm correct operation.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-50 of 547.1.2 DownlinkConfirm that there is a signal at the expected frequency and strength from the base station. Ifthis is not present then the fault may lay outside the system. To confirm this, inject adownlink frequency signal from a known source at the master site BTS input and check foroutput at the remote site feeder output.If a signal is not received at the output it will be necessary to follow the downlink paththrough the system to find a point at which the signal is lost. The expected downlink outputfor the given input can be found in the end-to-end test specification.7.1.3 UplinkTesting the uplink involves a similar procedure to the downlink except that the frequenciesused are those transmitted by the mobile equipment.7.1.4 Fault repairOnce a faulty component has been identified, a decision must be made on the appropriatecourse to carry out a repair. A competent engineer can quickly remedy typical faults such asfaulty connections or cables. The exceptions to this are cable assemblies connectingbandpass filter assemblies that are manufactured to critical lengths to maintain a 50-ohmsystem. Care should be taken when replacing cables or connectors to ensure that items are ofthe correct specification. The repair of component modules such as amplifiers and bandpassfilters will not usually be possible in the field, as they frequently require specialistknowledge and test equipment to ensure correct operation. It is recommended that items ofthis type are replaced with a spare unit and the faulty unit returned to AFL for repair. Oneitem that may need individual testing on site is the DC Tap system which supplies 48V DCto the remote cell enhancer. When this unit is ‘on’ (but not necessarily with RF signals) aDC voltage of over 40V should be available at the remote site at the input RF port. Becareful not to ‘short out’ the enhancer output RF cable when DC is present – it will blow the48V PSU fuse!
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-51 of 547.1.5 Checking serviceFollowing the repair of any part of the system it is recommended that a full end-to-end test iscarried out in accordance with the test specification and that the coverage is checked bysurvey.It is important to bear in mind that the system includes a radiating cable network and basestations that may be faulty or may have been damaged.7.1.6 Service SupportAdvice and assistance with maintaining and servicing this system are available by contactingAerial Facilities Ltd.7.2 Tools & Test EquipmentThe minimum tools and test equipment needed to successfully service this AFL product areas follows:-Spectrum analyser: 100kHz to 2GHz (Dynamic range = 90dB).Signal Generator: 30MHz to 2GHz (-120dBm to 0dBm o/p level).Attenuator: 20dB, 10W, DC-2GHz, (N male – N female).Test Antenna: Yagi or dipole for operating frequency.Digital multi-meter: Universal Volt-Ohm-Amp meter.Test cable x 2: N male – N male, 2M long RG214.Test cable x 2: SMA male – N male, 1m long RG223.Hand tools: Philips #1&2 tip screwdriver.3mm flat bladed screwdriver.SMA spanner and torque setter.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-52 of 547.3 Care of Modules7.3.1 General CommentsMany of the active modules contain semiconductor devices utilising MOS technology, whichcan be damaged by electrostatic discharge. Correct handling of such modules is mandatory toensure their long-term reliability.To prevent damage to a module, it must be withdrawn/inserted with care. The module mayhave connectors on its underside, which might not be visible to the service operative.7.3.2 Module Removal (LNA’s, general procedure):The following general rules should be followed to remove a module:1 Remove power to the unit2 Remove all visible connectors (RF, DC & alarm)3 Release module retaining screws.4 Slowly but firmly, pull the module straight out of its position. Take care not to twist/turnthe module during withdrawal. (When the module is loose, care may be needed, as theremay be concealed connections underneath).7.3.3 Module Replacement (general):1 Carefully align the module into its location then slowly push the module directly straightinto its position, taking care not to twist/turn it during insertion.2 Reconnect all connectors, RF, alarm, power etc.,(concealed connectors may have to beconnected first).3 Replace retaining screws (if any).4 Double-check all connections before applying power.7.3.4 Power Amplifiers1) 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 alarmconnector.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 inits entirety. On certain types of amplifier the alarm board is not mounted on a dedicatedmounting plate; in this case it will have to firstly be removed by unscrewing it from themounting pillars, in most cases, the pillars will not have not have to be removed beforelifting the amplifier.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-53 of 545) If the amplifier to be removed has a heatsink attached, there may be several differentways it can have been assembled. The most commonly used method, is screws throughthe front of the heatsink to threaded screw holes (or nuts and bolts), into the amplifierwithin the main case. If the heatsink is mounted on the rear of the main case (e.g., againsta wall in the case of wall mounted enclosures), then the fixing method for the heatsinkwill be from within the case, (otherwise the enclosure would have to be removed from thewall in order to remove the heatsink).When the heatsink has been removed, the amplifier may be unscrewed from the maincasing 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 casejoint and also between the amplifier and the main case.7.3.5 Low Power Amplifier Replacement1 Disconnect the mains power supply and disconnect the 24V dc supply connector for theLPA.2 Disconnect the RF input and output cables from the LPA.3 Disconnect the alarm connector.4 Remove the alarm monitoring wires from (D type connector) pins 9 and 10.5 Remove the LPA module by removing the four retaining screws, replace with a newLPA module and secure it with the screws.6 Connect the RF cables to the LPA input and output connectors. Reconnect the wires tothe alarm board connector pins 9 and 10.7 Reconnect the DC supply connector and turn the mains switch on.Note: Tighten SMA connectors using only a dedicated SMA torque spanner. IfSMA connectors are over-tightened, irreparable damage will occur. . Do not useadjustable pliers to loosen/tighten SMA connectors.Also take care not to drop or knock the module as this can damage (or misalign in thecase of tuned passive modules) sensitive internal components. Always store the modulesin an environmentally friendly location7.3.6 Module Transportation:To maintain the operation, performance and reliability of any module it must be stored andtransported 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 orblack, and are often marked with an ESD label. Any module sent back to AFL forinvestigation/repair must be so protected. Please contact AFL’s quality department beforereturning a module.
5-Way Channelised UHF Cell EnhancerMaintenance HandbookH/book Number:-50-060601HBKM Issue No:-1Date:-04/07/2003 Page:-54 of 54APPENDIX A INITIAL EQUIPMENT SET-UP CALCULATIONSGENERAL INFORMATIONSite Name: Client Name:Date: AFL Equip. Model N.ANTENNA SYSTEMSModel Gain Azimuth CommentsA - Service AntennaB – Donor AntennaType Loss Length CommentsC – Service FeederD – Donor FeederINITIAL PARAMETERSE – CE Output Power dBmF – Antenna Isolation dBG – Input signal level from donor BTS dBmOperating Voltage VDOWNLINK CALCULATIONSParameter Comments ValueInput signal level (G)dBmCE max. o/p power (E)dBmGain setting E - G dBIsolation required (Gain + 10dB) dBService antenna gain (A)dBService antenna feeder loss (C)dBEffective radiated power (ERP) E+A-C dBmAttenuator setting CE gain-gain setting dBIf the input signal level in the uplink path is known and steady, use the following calculationtable to determine the gain setting. If the CE features Automatic Gain Control the attenuatorshould be set to zero and if not, then the attenuation setting for both uplink and downlinkshould be similar.UPLINK CALCULATIONSParameter Comments ValueInput signal level dBmCE max. o/p power (E)dBmGain setting dBRequired isolation dBDonor antenna gain (B)dBDonor antenna feeder loss (D)dBEffective radiated power (ERP)E+B-D dBmAttenuator setting (CE gain-gain setting) dB

Navigation menu