ETSI EN 301 489-4 V1.2.1 (2000-08)

Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 4: Specific conditions for fixed radio links and ancillary equipment and services

DEN/ERM-EMC-219-4

Elektromagnetna združljivost (EMC) in zadeve v zvezi z radijskim spektrom (ERM) - Standard elektromagnetne združljivosti (EMC) za radijsko opremo in storitve - 4. del: Posebni pogoji za fiksne radijske povezave ter pomožno opremo in storitve

General Information

• Status: Published
• Publication Date: 13-Feb-2001
• Technical Committee: ERM WGEMC - ERM Electromagnetic Compatibility
• Current Stage: 12 - Completion
• Due Date: 21-Jul-2000
• Completion Date: 03-Aug-2000
• Mandate: M/284
• Mandate: T-353
• Ref Project: SIST EN 301 489-4:2001 - Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 4: Specific conditions for fixed radio links and ancillary equipment and services

Relations

• Official Journal Project Relation: ETSI EN 301 489-4 V1.3.1 (2002-08) - Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 4: Specific conditions for fixed radio links and ancillary equipment and services
• Effective Date: 01-Dec-2009

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Elektromagnetna združljivost (EMC) in zadeve v zvezi z radijskim spektrom (ERM) - Standard elektromagnetne združljivosti (EMC) za radijsko opremo in storitve - 4. del: Posebni pogoji za fiksne radijske povezave ter pomožno opremo in storitveElectromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 4: Specific conditions for fixed radio links and ancillary equipment and services33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:EN 301 489-4 Version 1.2.1SIST EN 301 489-4:2001en01-september-2001SIST EN 301 489-4:2001SLOVENSKI
STANDARD



SIST EN 301 489-4:2001



ETSIEN301489-4V1.2.1(2000-08)CandidateHarmonizedEuropeanStandard(Telecommunicationsseries)ElectromagneticcompatibilityandRadiospectrumMatters(ERM);ElectroMagneticCompatibility(EMC)standardforradioequipmentandservices;Part4:SpecificconditionsforfixedradiolinksandancillaryequipmentandservicesSIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)2ReferenceDEN/ERM-EMC-219-4KeywordsEMC,FWA,point-to-point,radio,RLL,WLL,regulationETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]opartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)3ContentsIntellectualPropertyRights.5Foreword.51Scope.72References.73Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.84Testconditions.84.1General.84.1.1Testconditionsandconfigurations.84.1.2Emissiontests.94.1.3Immunitytests.104.2Arrangementsfortestsignals.114.2.1Arrangementsfortestsignalsattheinputofthetransmitter.114.2.2Arrangementsfortestsignalsattheoutputofthetransmitter.114.2.3Arrangementsfortestsignalsattheinputofthereceiver.114.2.4Arrangementsfortestsignalsattheoutputofthereceiver.124.3Exclusionbands.124.3.1Exclusionbandsforreceivers.124.3.2Exclusionbandsfortransmitters.125Performanceassessment.125.1General.125.2Equipmentwhichcanprovideacommunicationslink.125.3Equipmentwhichdoesnotprovideacommunicationslink.125.4Ancillaryequipment.125.5Equipmentclassification.136Performancecriteria.136.1PerformancecriterionforContinuousphenomenaappliedtoTransmitters(CT)andReceivers(CR).136.2PerformancecriterionforTransientphenomenaappliedtoTransmitters(TT)andReceivers(RT).136.3Specificperformancecriteria.136.3.1Digitalsignalports.136.3.1.1Performancecriterionforcontinuousphenomena.136.3.1.2Performancecriterionfortransientphenomena.146.3.2Analoguevoicefrequencysignalports.146.3.2.1Performancecriterionforcontinuousphenomena.146.3.2.2Performancecriterionfortransientphenomena.146.3.3Ethernetandpacket-datainterfaces.146.3.3.1Performancecriterionforcontinuousphenomena.146.3.3.2Performancecriterionfortransientphenomena.146.3.4Serviceandmaintenanceinterfaces.146.3.5Synchronizationinterfaces.156.3.5.1Performancecriterionforcontinuousphenomena.156.3.5.2Performancecriteriafortransientphenomena.156.3.6Remotealarminterfaces.156.3.6.1Performancecriterionforcontinuousphenomena.156.3.6.2Performancecriterionfortransientphenomena.156.4Performancecriteriaforancillaryequipmenttestedonastandalonebasis.157Applicabilityoverviewtables.157.1Emission.157.1.1General.157.1.2Specialconditions.16SIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)47.2Immunity.167.2.1General.167.2.2Specialconditions.16AnnexA(informative):ExamplesofFixedRadioLinkequipmentwithininthescopeofthepresentdocument.17A.1FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe1,4GHzfrequencyband.17A.2FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe2,1to2,6GHzfrequencyband.17A.3FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe3to11GHzfrequencyband.17A.4FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe13to18GHzfrequencyband.18A.5FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe23GHzfrequencyband.18A.6FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe26and28GHzfrequencyband.18A.7FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe38GHzfrequencyband.19A.8FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe50GHzfrequencyband.19A.9FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe55GHzfrequencyband.19A.10FixedRadioSystems;Point-to-pointequipment;intendedforoperationinthe58GHzfrequencyband.19A.11FixedRadioSystems;Point-to-Multipointequipment;intendedforoperationinthefrequencybandbelow1GHz.20A.12FixedRadioSystems;Point-to-Multipointequipment;intendedforoperationinthe1to3GHzfrequencyband.20A.13FixedRadioSystems;Point-to-Multipointequipment;intendedforoperationinthe3to11GHzfrequencyband.21A.14FixedRadioSystems;Point-to-Multipointequipment;intendedforoperationinthe11to60GHzfrequencyband.21A.15FixedRadioSystems;Point-to-Multipointequipment;intendedforoperationinthe26and28GHzfrequencyband.22AnnexB(informative):PointtoMultipointfixedradiolinks;Generalsystemarchitecture.23Bibliography.24History.27SIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisCandidateHarmonizedEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeElectromagneticcompatibilityandRadiospectrumMatters(ERM).ThepresentdocumenthasbeenproducedbyETSIinresponsetoamandatefromtheEuropeanCommissionissuedunderCouncilDirective98/34/EC[4](asamended)layingdownaprocedurefortheprovisionofinformationinthefieldoftechnicalstandardsandregulations.Thepresentdocument,togetherwiththeEN301489-1[1],isintendedtobecomeaHarmonizedEMCStandard,thereferenceofwhichwillbepublishedintheOfficialJournaloftheEuropeanCommunitiesreferencingtheCouncilDirectiveontheapproximationofthelawsoftheMemberStatesrelatingtoelectromagneticcompatibility("theEMCDirective")(89/336/EEC[3]asamended),andtheCouncilDirectiveontheapproximationofthelawsoftheMemberStatesrelatingtoradioequipmentandtelecommunicationsterminalequipmentandthemutualrecognitionoftheirconformity(the"R&TTEDirective"1999/5/EC[2]).Thepresentdocumentispart4ofamulti-partENcoveringtheElectroMagneticCompatibility(EMC)standardforradioequipmentandservices,asidentifiedbelow:Part1:"Commontechnicalrequirements";Part2:"Specificconditionsforradiopagingequipment";Part3:"SpecificconditionsforShort-RangeDevices(SRD)operatingonfrequenciesbetween9kHzand40GHz";Part4:"Specificconditionsforfixedradiolinksandancillaryequipmentandservices";Part5:"SpecificconditionsforPrivatelandMobileRadio(PMR)andancillaryequipment(speechandnon-speech)";Part6:"SpecificconditionsforDigitalEnhancedCordlessTelecommunications(DECT)equipment";Part7:"Specificconditionsformobileandportableradioandancillaryequipmentofdigitalcellularradiotelecommunicationssystems(GSMandDCS)";Part8:"SpecificrequirementsforGSMbasestations";Part9:"SpecificconditionsforwirelessmicrophonesandsimilarRadioFrequency(RF)audiolinkequipment";Part10:"SpecificconditionsforFirst(CT1andCT1+)andSecondGenerationCordlessTelephone(CT2)equipment";Part11:"SpecificconditionsforFMbroadcastingtransmitters";Part12:"SpecificconditionsforEarthStationsoperatedinthefrequencyrangesbetween4GHzand30GHzintheFixedSatelliteService(FSS)";Part13:"SpecificconditionsforCitizens'Band(CB)radioandancillaryequipment(speechandnon-speech)";SIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)6Part15:"Specificconditionsforcommerciallyavailableamateurradioequipment";Part16:"Specificconditionsforanaloguecellularradiocommunicationsequipment,mobileandportable";Part17:"SpecificrequirementsforWidebanddataandHIPERLAN";Part18:"SpecificrequirementsforTerrestrialTrunkedRadio(TETRA)";Part19:"SpecificconditionsforReceiveOnlyMobileEarthStations(ROMES)operatinginthe1,5GHzbandprovidingdatacommunications";Part20:"SpecificconditionsforMobileEarthStations(MES)usedintheMobileSatelliteServices(MSS)";Part22:"SpecificrequirementsforVHFaeronauticalmobileandfixedradios".NationaltranspositiondatesDateofadoptionofthisEN:14July2000DateoflatestannouncementofthisEN(doa):31October2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30April2001DateofwithdrawalofanyconflictingNationalStandard(dow):31October2003SIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)71ScopeThepresentdocument,togetherwithEN301489-1[1],coverstheassessmentofFixedRadioLinksandancillaryequipmentinrespectofElectroMagneticCompatibility(EMC).Technicalspecificationsrelatedtotheantennaportoftheradioequipmentarenotincludedinthepresentdocument.Suchtechnicalspecificationsarefoundintherelevantproductstandardsfortheeffectiveuseoftheradiospectrum.Thepresentdocumentspecifiestheapplicabletestconditions,performanceassessmentandperformancecriteriaforAnalogueandDigitalFixedRadioLinksoperatingasfixedPointtoPoint,andPointtoMultipointsystemsasdefinedinannexB,includingtheassociatedancillaryequipment.ExamplesofFixedRadioLinksequipmentaregiveninannexA.Incaseofdifferences(forinstanceconcerningspecialconditions,definitions,abbreviations)betweenthepresentdocumentandEN301489-1[1],theprovisionsofthepresentdocumenttakeprecedence.Theprocessingandprotectionswitch,(de)modulator,transmitter,receiver,RFfilters,branchingnetworks,feedersarecoveredbythepresentdocument.Themultiplexingand/orde-multiplexingelementsarecoverediftheyformpartofthetransmitter,receiverand/ortransceiver.TheenvironmentalclassificationandtheemissionandimmunityrequirementsusedinthepresentdocumentareasstatedinEN301489-1[1],exceptforanyspecialconditionsincludedinthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIEN301489-1:"ElectromagneticcompatibilityandRadiospectrumMatters(ERM);ElectroMagneticCompatibility(EMC)standardforradioequipmentandservices;Part1:Commontechnicalrequirements".[2]1999/5/EC:"CouncilDirectiveontheapproximationofthelawsoftheMemberStatesrelatingtoradioequipmentandtelecommunicationsterminalequipmentandthemutualrecognitionoftheirconformity".[3]89/336/EEC:"CouncilDirectiveontheapproximationofthelawsoftheMemberStatesrelatingtoelectromagneticcompatibility".[4]Directive98/34/ECoftheEuropeanParliamentandoftheCouncilof22June1998layingdownaprocedurefortheprovisionofinformationinthefieldoftechnicalstandardsandregulations.[5]ITU-RRecommendationF.1191-1:"Bandwidthsandunwantedemissionsofdigitalradio-relaysystems".[6]ITU-RRecommendationF.746-3:"Radio-frequencychannelarrangementsforradio-relaysystems".SIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)83Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thetermsanddefinitionsgivenintheEN301489-1[1],clause3andthefollowingapply.channelseparation:accordingtoITU-RRecommendationF.1191-1[5],theCHannelSeparation(CHS)istakenasXS/2foralternatedfrequencychannelarrangementsandXSforco-channelandinterleavedfrequencychannelarrangementsasdefinedbyITU-RRecommendationF.746-3[6],XSistheradio-frequencyseparationbetweenthecentrefrequenciesofadjacentradio-frequencychannelsonthesamepolarizationandinthesamedirectionoftransmission.operatingfrequencyrange:range(s)ofradiofrequenciescoveredbytheEquipmentUnderTest(EUT)withoutanychangeofunits.3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:BERBitErrorRatioCCSCentralControllerstationCHSChannelSeparationCRSCentralRadioStationEMElectromagneticEMCElectroMagneticCompatibilityEUTEquipmentUnderTestRFRadioFrequencyRSRepeaterStationsTSTerminalStations4TestconditionsForthepurposesofthepresentdocument,thetestconditionsofEN301489-1[1],clause4,shallapplyasappropriate.Furtherproductrelatedtestconditionsforfixedradiolinksarespecifiedinthepresentdocument.4.1GeneralForemissionandimmunityteststhetestmodulation,testarrangements,etc.,asspecifiedinthepresentdocument,subclauses4.1.1to4.3.2,shallapply.4.1.1TestconditionsandconfigurationsThissubclausedefinesthetestconditionsandconfigurationsfortheemissionandimmunitytestsasfollows:-atransmittershall,asaminimum,comprisetheelementbetweenE'andA'offigure1.Additionallythetransmittermaycompriseanyoftheotherelementsfromthetransmitterchainshowninfigure1.Iftheseadditionalelementsarepartofthetransmitterorsystemtheyshallalsomeettherequirementsofthepresentdocument;SIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)9MultiplexingProcessing&ProtectionSwitchModulatorTransmitterTxRFFilterBranchingNetworkFeederZ'G'F'E'A'B'C'D'NOTE1:Forthepurposesofdefiningthereferencepoints,thebranchingnetwork(B'toC')doesnotincludeahybrid.NOTE2:PointsB'andC'maycoincide,dependentontheequipmentconfiguration.Figure1:Elementsofatransmitter-areceivershall,asaminimum,comprisetheelementbetweenAandEoffigure2.Additionallythereceivermaycompriseanyoftheotherelementsfromthereceiverchainshowninfigure2.Iftheseadditionalelementsarepartofthereceiverorsystemtheyshallalsomeettherequirementsofthepresentdocument;DemuxProcessing&ProtectionSwitchDemodulatorReceiverRxRFFilterBranchingNetworkFeederZGFEABCDNOTE1:Forthepurposesofdefiningthereferencepoints,thebranchingnetwork(BtoC)doesnotincludeahybrid.NOTE2:PointsBandCmaycoincide,dependentontheequipmentconfiguration.Figure2:Elementsofareceiver-atransceivershallcompriseasaminimumtheelementsE'toA'andAtoEshowninfigures1and2,andadditionallyitmaycompriseanycombinationsoftheotherelements.Iftheseadditionalelementsarepartofthetransceivertheyshallalsomeettherequirementsofthepresentdocument;-theequipmentshallbetestedunderconditionswhicharewithinthemanufacturer'sdeclaredrangeofhumidity,temperatureandsupplyvoltage;-thetestconfigurationshallbeasclosetonormalintendeduseaspossible;-iftheequipmentispartofasystem,orcanbeconnectedtoancillaryequipment,thenitshallbeacceptabletotesttheequipmentwhileconnectedtotheminimumconfigurationofancillaryequipmentnecessarytoexercisetheports;-portswhichinnormaloperationareconnectedtoancillaryorotherequipmentshallbeeitherconnectedtosuchequipment,ortoarepresentativeterminationtosimulatetheinput/outputcharacteristicsoftheancillaryorotherequipment.RadioFrequency(RF)input/outputportsshallbecorrectlyterminated;-iftheequipmenthasalargenumberofports,thenasufficientnumbershallbeselectedtosimulateactualoperationconditionsandtoensurethatallthedifferenttypesofterminationaretested;-portswhicharenotconnectedtocablesduringnormalintendedoperation,e.g.serviceconnectors,programmingconnectors,temporaryconnectorsetc.shallnotbeconnectedtoanycablesforthepurposeofElectromagneticCompatibility(EMC)testing.Wherecableshavetobeconnectedtotheseports,orinterconnectingcableshavetobeextendedinlengthinordertoexercisetheEUT,precautionsshallbetakentoensurethattheevaluationoftheEUTisnotaffectedbytheadditionorextensionofthesecables;-thetestconditions,testconfigurationandmodeofoperationshallberecordedinthetestreport.4.1.2EmissiontestsTheprovisionsEN301489-1[1],clause8shallapplywiththefollowingmodification.ForPointtoMultipointsystemsacommunicationslinkshallbeestablished,whichshallcompriseoftheCentralStationandaminimumofoneTerminalStation.Thesestationsaretestedseparately.SeeannexAfordefinitionofCentralStationandTerminalStation.SIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)104.1.3ImmunitytestsTheprovisionsofEN301489-1[1],subclause9.1shallapplywiththefollowingmodifications.Thetestconfigurationshallfortransmittersbeinaccordancewiththeprincipleoffigure3,andforreceiversitshallbeinaccordancewiththeprincipleoffigure4,andfortransceivershallbeinaccordancewiththeprincipleoffigure5.Themeasuringequipmentshallbelocatedoutsidethetestenvironment.Adequatemeasuresshallbetakentoavoidanyeffectsoftheunwantedsignalsonthemeasuringequipment.TransmitterMonitoringequipmentAttenuatorInsidetestenvironmentOutsidetestenvironmentSignalsourceRFoutputInputReceiverFigure3:TestconfigurationfortransmittersDuringimmunityteststhetransmittershallbeoperatedatitsratedoutputpower.Theinputtothetransmittershallbeinaccordancewithsubclause4.2.1(seefigure3).Acommunicationlinkshallbeestablishedatthestartofthetestandbemaintainedduringthetest.ReceiverAttenuatorInsidetestenvironmentOutsidetestenvironmentSignalsourceRFinputOutputMonitoringequipmentTransmitterFigure4:TestconfigurationforreceiversDuringimmunitytestsforreceivers,thewantedRFinputsignal,coupledtothereceiver,shallbeinaccordancewithsubclause4.2.3(seefigure4).Acommunicationlinkshallbeestablishedatthestartofthetestandbemaintainedduringthetest.MonitoringequipmentAttenuatorInsidetestenvironmentOutsidetestenvironmentSignalsourceRFoutputInputReceiverTransmitterReceiverTransmitterAttenuatorutputRFinputFigure5:TestconfigurationoftransceiversInthecaseofduplextransceiverswherethetransmitterandreceivercannotoperateatthesameradiofrequency,thewantedinputsignal,coupledtothereceiver,shallbeinaccordancesubclause4.2.3.Thetransmittershallbeoperatedatitsratedoutputpower,andwithitsinputcoupledtotheoutputofthereceiver(repeatermode)(seefigure5).Thesametestconfigurationalsoapplieswherethetransmittersandreceiversoperateatthesameradiofrequency.Themeasurementshallbemadeinthemodeofoperationasrequiredinthissubclause.SIST EN 301 489-4:2001



ETSIETSIEN301489-4V1.2.1(2000-08)11Acommunicationlinkshallbeestablishedatthestartofthetestandbemaintainedduringthetest.Fortheimmunitytestsofancillaryequipmentwithoutaseparatepass/failcriteria,thereceiver,transmitterortransceivercoupledtotheancillaryequipment,shallbeusedtojudgewhethertheancillaryequipmentpassesorfails.ForPointtoMultipointsystemstheminimumconfigurationshallcompriseofoneCentralStationandoneterminalstation,unlessmoreterminalstationsarerequiredtoestablisharepresentativetestconfiguration.Acommunicationlinkshallbeestablishedatthestartofthetestandmaintainedduringthetest,betweentheCentralStationandaTerminalStation(s).Thesestationsaretestedseparately.4.2ArrangementsfortestsignalsTheprovisionsofEN301489-1[1],subclause4.2shallapply.4.2.1ArrangementsfortestsignalsattheinputofthetransmitterTheprovisionsofEN301489-1[1],subclause4.2.1shallapplywiththefollowingmodifications.Theinputofthetransmittershallbecoupledviathenormalinputconnectortothesignalsourceshowninfigures3and5.Thewantedsignal(s)shallbe(a)representativebasebandinputsignal(s)correspondingtonormaloperation.4.2.2ArrangementsfortestsignalsattheoutputofthetransmitterTheprovisionsofEN301489-1[1],subclause4.2.2shallapplywiththefollowingmodifications.ToestablishacommunicationlinkthewantedoutputsignalshallbedeliveredfromthetransmitterRFoutputviasuitableattenuationthroughacoaxialcableorwaveguide.AdequatemeasuresshallbetakentominimizetheeffectsofunwantedcurrentsontheexternalconductorofthecoaxialcableorwaveguideatthepointofentrytotheEUT.MismatcherrorsmaybeavoidedbyplacingtheattenuatorsclosetotheEUT.IfthetransmitterRFoutputcannotberecoveredviaconnectionanotherantennaofthesametypemaybeusedtoretrievethewantedoutputsignalfromthetransmitter.4.2.3ArrangementsfortestsignalsattheinputofthereceiverTheprovisionsofEN301489-1[1],subclause4.2.3shallapplywiththefollowingmodifications.ThewantedsignalshallbearepresentativemodulatedRFinputsignalcorrespondingtonormaloperation.ToestablishacommunicationlinkthewantedinputsignalshallbeappliedtotheRFinputofthereceiverviaacoaxialcableorwaveguide.AdequatemeasuresshallbetakentominimizetheeffectsofunwantedcurrentsontheexternalconductorofthecoaxialcableorwaveguideatthepointofentrytotheEUT.MismatcherrorsmaybeavoidedbyplacingtheattenuatorsclosetotheEUT.IfthereceiverRFinputcannotbeappliedviaconnectionanotherantennaofthesametypemaybeusedtoapplythewantedinputsignaltothereceiver.Thesourceofthewantedinputsignalshallbelocatedoutsideofthetestenvironment.Fordigitalequipment,includingPointtoMultipointequipment,theinputsignallevelshallb
...