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STANDARD
SIST EN 301 840-1 V1.1.1:2003
ETSIEN301840-1V1.1.1(2001-06)EuropeanStandard(Telecommunicationsseries)ElectromagneticcompatibilityandRadiospectrumMatters(ERM);DigitalradiomicrophonesoperatingintheCEPTHarmonizedband1785MHzto1800MHz;Part1:TechnicalcharacteristicsandmethodsofmeasurementSIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)2ReferenceDEN/ERM-RP08-0308-1Keywordsradio,radiomic,testing,audio,digitalETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°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:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)3ContentsIntellectualPropertyRights.6Foreword.6Introduction.61Scope.82References.93Definitions,symbolsandabbreviations.93.1Definitions.93.2Symbols.103.3Abbreviations.104Functionalcharacteristics.114.1Radiomicrophonedescriptions.114.2Inearmonitoring.115General.115.1Presentationofequipmentfortestingpurposes.115.1.1Choiceofmodelfortesting.125.1.1.1Testingofmulti-channelequipment.125.1.1.2TestingofequipmentwithoutapermanentexternalRFport.125.1.1.2.1EquipmentwithapermanentinternalRFport.125.1.1.2.2EquipmentwithatemporaryRFport.125.2Mechanicalandelectricaldesign.135.2.1General.135.2.2Controls.135.2.3PerformancetestingwithIntegralantenna.135.2.4Marking(equipmentidentification).135.3Interpretationofthemeasurementresults.136Testconditions,powersourcesandambientconditions.146.1Normalandextremetest-conditions.146.2Testpowersource.146.3Normaltestconditions.146.3.1Normaltemperatureandhumidity.146.3.2Normaltestpowersourcevoltage.146.3.2.1Mainsvoltage.146.3.2.2Nickel-cadmiumcells.156.3.2.3Otherpowersources.156.4Extremetestconditions.156.4.1Extremetemperatures.156.4.1.1Proceduresfortestsatextremetemperatures.156.4.2Extremetestpowersourcevoltages.156.4.2.1Mainsvoltage.156.4.2.2Re-chargeablebatterypowersources.156.4.2.3Powersourcesusingothertypesofbatteries.166.4.2.4Otherpowersources.167Generalconditions.177.1Normaltestmodulation.177.2Artificialantenna.187.3Testfixture.187.4Testsiteandgeneralarrangementsforradiatedmeasurements.187.5Arrangementfortestsignalsattheinputofthetransmitter.188Methodsofmeasurementandlimitsfortransmitterparameters.198.1Frequencyerror.198.1.1Definition.19SIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)48.1.2Methodofmeasurement.198.1.3Limit.198.2Carrierpower.198.2.1Definition.198.2.2Methodofmeasurementforequipmentwithoutintegralantenna.208.2.3Methodofmeasurementforequipmentwithintegralantenna.208.2.3.1Methodofmeasurementundernormaltestconditions.208.2.3.2Methodofmeasurementunderextremetestconditions.208.2.4Limit.218.3Channelbandwidth.218.3.1Definition.218.3.2MeasurementofNecessaryBandwidth(BN).218.3.3Limits.228.4Spuriousemissions.228.4.1Definition.228.4.2Methodofmeasuringtheeffectiveradiatedpower.228.4.3Limits.238.4.4Measuringreceiver.239Receiver.239.1Spuriousemissions.239.1.1Definitions.239.1.2Methodofmeasuringthepowerlevelinaspecifiedload.249.1.3Methodofmeasuringtheeffectiveradiatedpoweroftheenclosure.249.1.4Methodofmeasuringtheeffectiveradiatedpower.249.1.5Limits.2510Measurementuncertainty.25AnnexA(normative):Radiatedmeasurement.26A.1Testsitesandgeneralarrangementsformeasurementsinvolvingtheuseofradiatedfields.26A.1.1Anechoicchamber.26A.1.2Anechoicchamberwithaconductivegroundplane.27A.1.3OpenAreaTestSite(OATS).28A.1.4Testantenna.29A.1.5Substitutionantenna.29A.1.6Measuringantenna.30A.1.7Striplinearrangement.30A.1.7.1General.30A.1.7.2Description.30A.1.7.3Calibration.30A.1.7.4Modeofuse.30A.2Guidanceontheuseofradiationtestsites.31A.2.1Verificationofthetestsite.31A.2.2PreparationoftheEUT.31A.2.3PowersuppliestotheEUT.31A.2.4Volumecontrolsettingforanaloguespeechtests.31A.2.5Rangelength.32A.2.6Sitepreparation.32A.3Couplingofsignals.33A.3.1General.33A.3.2DataSignals.33A.3.3Speechandanaloguesignals.33A.3.3.1Acousticcouplerdescription.33A.3.3.2Calibration.34A.4Standardtestposition.34A.5Testfixture.34A.5.1Description.34A.5.2Calibration.35SIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)5A.5.3Modeofuse.36AnnexB(informative):Bibliography.37History.38SIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)6IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeElectromagneticcompatibilityandRadiospectrumMatters(ERM).Thepresentdocumentispart1ofamulti-partdeliverablecoveringtheDigitalradiomicrophonesoperatingintheCEPTHarmonizedband1785MHzto1800MHz,asidentifiedbelow:Part1:"Technicalcharacteristicsandmethodsofmeasurement";Part2:"HarmonizedENunderarticle3.2oftheR&TTEdirective".EveryENpreparedbyETSIisavoluntarystandard.Thepresentdocumentmaycontaintextconcerningconformancetestingoftheequipmenttowhichitrelates.Thistextshouldbeconsideredasguidanceonlyanddoesnotmakethepresentdocumentmandatory.AnnexAprovidesnormativespecificationsconcerningradiatedmeasurements.NationaltranspositiondatesDateofadoptionofthisEN:15June2001DateoflatestannouncementofthisEN(doa):30September2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31March2002DateofwithdrawalofanyconflictingNationalStandard(dow):31March2002IntroductionThepresentdocumentisthefirststageoftheintroductionofdigitalradiomicrophonesintotheradiospectrum.Theparametersaresuitableforuseonawiderrangeofspectrumswhensuchspectrumisavailableandcompatibilityissuesareconsidered.ThepresentdocumentisbasedonEN300422[1].SincetheadoptionofEN300422[1]forradiomicrophones,digitalequipmenthasbeenintroducedwithdifferentrequirementsforbandwidthandtesting.ThepresentdocumentisintendedtospecifytheminimumperformanceandthemethodsformeasurementofDigitalRadioMicrophonesandIn-earmonitoringsystemsasspecifiedinthescope.In-earmonitoringsystemsmaybetestedtoeitherthepresentdocumentortoEN301357[6]withdueconsiderationofpowerandoperatingfrequency.SIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)7Therapidlyincreasingquantitiesofwirelessmicrophones(hereafterreferredtoasradiomicrophones)inoperation,bothlegalandillegal,togetherwiththegreatermobilityoftheusers,eitherprofessionalorprivate,hasledtoaserioussituationwithmanyoccurrencesofinterferenceandirregularoperation.Legalradiomicrophones,beingfundamentallylowpowerdevices,areinterferedwithmorethanthegeneratorsoftheinterference,andsufferprimarilyfromthissituation.TheuseoftheCEPTharmonizedband1785to1800MHzfordigitaldevicesdetailedwithinthescopeenablesmanufacturerstobettermeettherequirementsofthemarket.Inpreparingthepresentdocument,muchattentionhasbeengiventoassurealowinterferenceprobability,whileatthesametimeallowingamaximumflexibilityandservicetotheend-user.Thepresentdocumentisatestingstandardbasedonspectrumutilizationparametersanddoesnotincludeperformancecharacteristicsthatmayberequiredbytheuserorrequirementsforinterfacingequipment.Cordlessheadphones/loudspeakersandconsumerIn-earmonitoringarelowpowerwidebandsystemsthathavesomecharacteristicsincommonwithradiomicrophonesbutarenotcompatiblewithmultichannelradiomicrophonescoveredbythepresentdocument.ThisequipmentiscoveredbyEN301357[6].SIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)81ScopeThepresentdocumentcoverstheminimumcharacteristicsconsiderednecessaryinordertomakethebestuseoftheavailablefrequencies.Itdoesnotnecessarilyincludeallthecharacteristicsthatmayberequiredbyauser,nordoesitnecessarilyrepresenttheoptimumperformanceachievable.Thepresentdocumentappliestodigitalequipmentoperatingonradiofrequenciesbetween1785MHzand1800MHz.ThepresentdocumentdoesnotprecludeanydigitalFDMAmodulationtechnique,providedthatthemodulationspectrumlieswithinthestandardizedspectralmask.AnalogueFrequencyModulation(FM)isatpresentusedforthemajorityofradiomicrophonesandothersimilarequipmentandisnotwithinthescopeofthisstandard.ThepresentdocumentdoesnotapplytoradiomicrophonesorinearmonitoringequipmentemployingTimeDivisionMultipleAccess(TDMA),frequencyhoppingandspreadspectrumorsimilarformsofmodulation.Electromagneticcompatibility(EMC)requirementsarecoveredbyEN301489-9[5].AdditionalstandardsorspecificationsmayberequiredforequipmentintendedtointerfacetothePublicSwitchedTelephoneNetwork(PSTN).Thisfacilitymaybesubmittedtoregulatoryconditions.Thepresentdocumentmaybeusedbyaccreditedtestlaboratoriesfortestingoftheequipment.Theperformanceoftheequipmentsubmittedfortestingshouldberepresentativeoftheperformanceofthecorrespondingproductionmodels.Thepresentdocumentcontainsinstructionsforthepresentationofequipmentfortestingpurposes.Powerlimitsrecommendedinthepresentdocumenthavebeenchosentoallowmaximumsimultaneousreusageoffrequencyallocations.Nationalregulationsonpoweroutputmayapplyuptothelimitsquotedbelow.NOTE:ForhigherpowerequipmentreferenceshouldbemadetoETS300454[4]Widebandaudiolinks.Equipmenteffectiveradiatedpower(erp)orconductedRadioMicrophones50mWInearmonitoring50mWThetypesofequipmentcoveredbythepresentdocumentareasfollows:-professionalhandheldradiomicrophones;-professionalbodywornradiomicrophones;-inearmonitoringsystems.SIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)92ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublicationand/oreditionnumberorversionnumber)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]ETSIEN300422:"ElectromagneticcompatibilityandRadiospectrumMatters(ERM);Technicalcharacteristicsandtestmethodsforwirelessmicrophonesinthe25MHzto3GHzfrequencyrange".[2]ITU-RRecommendationBS.559-2:"Objectivemeasurementofradio-frequencyprotectionratiosinLF,MFandHFbroadcasting".[3]ETSIETR028:"RadioEquipmentandSystems(RES);Uncertaintiesinthemeasurementofmobileradioequipmentcharacteristics".[4]ETSIETS300454(includingAmendment1):"RadioEquipmentandSystems(RES);Widebandaudiolinks;Technicalcharacteristicsandtestmethods".[5]ETSIEN301489-9:"ElectroMagneticcompatibilityandRadiospectrumMatters(ERM);ElectroMagneticCompatibility(EMC)standardforradioequipmentandservices;Part9:SpecificconditionsforwirelessmicrophonesandsimilarRadioFrequency(RF)audiolinkequipment".[6]ETSIEN301357:"ElectromagneticcompatibilityandRadiospectrumMatters(ERM);TechnicalcharacteristicsandtestmethodsforanaloguecordlesswidebandaudiodevicesusingintegralantennasoperatingintheCEPTrecommended863MHzto865MHzfrequencyrange".[7]ANSIC63.5:"AmericanNationalStandardforCalibrationofAntennasUsedforRadiatedEmissionMeasurementsinElectromagneticInterference(EMI)ControlCalibrationofAntennas(9kHzto40GHz)".[8]ETSIETR273:"ElectromagneticcompatibilityandRadiospectrumMatters(ERM);Improvementofradiatedmethodsofmeasurement(usingtestsites)andevaluationofthecorrespondingmeasurementuncertainties".[9]IEC60489-3:"Methodsofmeasurementforradioequipmentusedinthemobileservices.Part3:ReceiversforA3EorF3Eemissions".3Definitions,symbolsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:conductedmeasurements:measurementsthataremadeusingadirect50ΩconnectiontotheEUTintegralantenna:antenna,withorwithoutaconnector,designedas,anddeclaredasbythemanufacturer,anindispensablepartoftheequipmentintegralmicrophone:microphone,designedas,anddeclaredasbythemanufacturer,anindispensablefixedpartoftheequipmentlimiterthreshold:audioinputoroutputlevelatwhichthetransmitteraudiolimiteractionmaybesaidtocommenceItisspecifiedwithanyaccessiblevariablegaincontrolssetaccordingtothemanufacturer'sinstructions,withasinusoidalinputsignalof500Hz)SIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)10radiatedmeasurements:measurementsthatinvolvetheabsolutemeasurementofaradiatedelectromagneticfieldcarriergrid:evenlyspacedrasterinagivenfrequencybandfortheallocationofcarrierfrequenciesTheminimumdistanceoftwocarriersinuseisamultipleoftherasterdependentontypeandusageoftheequipmentchannelbandwidth:frequencybandofdefinedwidth(asamultipleofthecarriergrid)includingsafetymarginforoperationonadjacentchannels,locatedsymmetricallyaroundcarrierfrequencyinthecarriergridport:anyconnectionpointonorwithintheEquipmentUnderTest(EUT)intendedfortheconnectionofcablestoorfromthatequipmentRadioFrequency(RF)port:anyconnectionpointonorwithintheEUTintendedfortheconnectionofRFcablesRFportsaretreatedas50Ωconnectionpointsunlessotherwisespecifiedbythemanufacturer.3.2SymbolsForthepurposesofthepresentdocument,thefollowingsymbolsapply:λwavelengthinmetresµFmicroFaradµWmicroWattdBcdBrelativetothecarrierlevelEfieldstrengthEoreferencefieldstrength(seeannexA)fccarrierfrequencyfooperatingfrequencyGHzgigaHertzHHenrykHzkiloHertzlimlimitingMHzmegaHertzmWmilliWattnWnanoWattRdistance(seeannexA)Roreferencedistance(seeannexA)3.3AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:acalternatingcurrentAR1AlignmentRange1AR2AlignmentRange2BdeclaredchannelBandwidth(seetable1)BNNecessaryBandwidthdcdirectcurrenterpeffectiveradiatedpowerEUTEquipmentUnderTestFDMAFrequencyDivisionMultipleAccessGMSKGaussianFilteredMinimumShiftKeyingGTFMGeneralizedTamedFrequencyModulationLFLowFrequencyPSTNPublicSwitchedTelephoneNetworkRBWResolutionBandWidthRFRadioFrequencyTDMATimeDivisionMultipleAccessTxTransmitterVBWVideoBandWidthSIST EN 301 840-1 V1.1.1:2003
ETSIETSIEN301840-1V1.1.1(2001-06)114Functionalcharacteristics4.1RadiomicrophonedescriptionsRadiomicrophonestraditionallyhaveusedwidebandanaloguefrequencymodulationtoachievethenecessaryaudioperformanceforprofessionaluse.Foranalogueapplicationsthemodulatedtransmittersignalrequiresa200kHzmaximumchannelbandwidth.Fordigitalapplicationstherequiredbandwidthisaffectedbythetransmitteddatarate,thepulseshapingfilterandtheappliedmodulationscheme.Therequireddataratewillbedeterminedprimarilybythedesiredaudioquality.Variouscombinationsofthesourcecoding,channel;coding,spectrumshapingandmodulationtechniqueareapplicableandmayleadtomoreorlessspectralbandwidth.Inordertokeepfreedominapplicationanddesigndifferentchannelbandwidthsaredefinedandcanbedeclaredbythemanufacturer.Theradiopartofthetransmitterandreceivershallbemadeupexclusivelyfromequipmentthathasbeenapprovedaccordingtothepresentdocument.Otherequipmentthatmaybeconnectedtoradiomicrophonesshallfulfilthestandardsapplicabletothatequipment(ifany).4.2InearmonitoringInearmonitoringequipmentisusedbystageandstudioperformerstoreceivepersonalfoldback(monitoring)oftheperformance.Thiscanbejusttheirownvoiceoracomplexmixofsources.Thisequipmentisusuallystereoor2channelaudio,however,thebandwidthrequirementofprofessionalinearmonitoringequipmentissimilartothoseofradiomicrophones.Theradiopartofthetransmitterandreceivershallbemadeupexclusivelyfromequipmentthathasbeenapprovedaccordingtothepresentdocument.Otherequipmentthatmaybeconnectedtoinearmonitoringequipmentshallfulfilthestandardsapplicabletothatequipment(ifany).5General5.1PresentationofequipmentfortestingpurposesEachequipmentsubmittedfortestingshallfulfiltherequirementsofthepresentdocumentonallchannelsoverwhichitisintendedtooperate.Theapplicantshallcompletetheappropriateapplicationformwhensubmittingequipmen
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