SIST EN 300 422-1 V1.2.2:2003

• Abstract:

  Editrial modifications of EN 300 422 consequent to the adoption of EN 300 422-2

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.060.99 - Other equipment for radiocommunications
• ICS: 33.100.01 - Electromagnetic compatibility in general
• ICS: 33.160.50 - Accessories
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 300 422-1 V1.2.2 (2000-08) - ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz frequency range; Part 1: Technical characteristics and test methods

Overview

SIST EN 300 422-1 V1.2.2:2003 specifies the technical characteristics and test methods for wireless microphones and in-ear monitoring systems operating within the 25 MHz to 3 GHz frequency range. Published by the Slovenski inštitut za standardizacijo (SIST), this standard aligns with the European norm EN 300 422-1 and incorporates editorial changes due to the adoption of EN 300 422-2. The main objective is to facilitate the harmonized use of radio spectrum, ensuring electromagnetic compatibility (EMC) and supporting frequency management authorities in harmonized frequency allocation.

Key Topics

• Technical and functional requirements: Defines minimum performance criteria for wireless microphones, in-ear monitors, tour guide systems, and aids for the handicapped.
• Test methods: Specifies detailed type-testing procedures, including approaches for different channel configurations and alignment/switching ranges.
• Frequency spectrum utilization: Covers radio frequencies from 25 MHz to 3 GHz, with provisions for both analogue frequency modulation (FM) and selected digital modulation techniques, provided emissions remain within a specified spectral mask.
• Equipment categorization: Classifies devices by type (e.g., professional handheld, body-worn, consumer, tour guide) and by class (Class 1: typically license-required; Class 2: often license-exempt in certain countries).
• Presentation for testing: Outlines requirements for submitting equipment for type testing, including necessary technical documentation, operating manuals, and details on interfacing options.
• Mechanical and electrical design considerations: Recommendations for product design to reduce interference and ensure compliance.
• Channel bandwidth declarations: Requires specification of operational channel bandwidth, with defined categories, such as 50 kHz, 75 kHz, 100 kHz, 150 kHz, and 200 kHz.

Applications

The SIST EN 300 422-1 standard is vital for manufacturers, testing laboratories, and regulatory authorities involved in:

• Product development: Ensuring that newly designed wireless microphones and related audio transmission systems comply with technical and spectrum regulations.
• Type testing and certification: Used by accredited test labs for type-approval testing to demonstrate compliance with European and national regulations.
• Broadcast and live events: Ensures reliability and interference-free operation for radio microphones and in-ear monitoring in professional audio, broadcast media, stage performances, and conference systems.
• Tourism and accessibility: Applies to tour guide systems and audio aids for the handicapped operating within defined power and frequency limitations.
• Frequency planning: Provides parameters supporting authorities’ efforts in harmonizing frequency allocation and mitigating interference risk across Europe.

Related Standards

The following standards and recommendations are referenced or relevant in conjunction with SIST EN 300 422-1:

• EN 300 422-2: Harmonized requirements under the R&TTE Directive, providing additional regulatory context.
• ETSI EN 301 357-1: Covers analogue cordless wideband audio devices within the 863 MHz to 865 MHz frequency band.
• ETSI EN 300 454-1: Addresses wideband audio links for higher power equipment.
• ETSI ETS 300 445: Specifies EMC requirements for wireless microphones and similar RF audio equipement.
• CEPT/ECC Recommendations: T/R 20-06 for low-power cordless microphone systems; ERC Recommendation 01-06 for mutual recognition of type approval and certification.
• ITU-R Recommendations: Such as BS.559-2, essential for measurement methods and ensuring electromagnetic compatibility.
• IEC 60244: Internationally recognized methods for radio transmitter measurements.

By adhering to the SIST EN 300 422-1 standard, device manufacturers and testing authorities enhance spectrum efficiency, promote market access across Europe, and ensure low-risk, high-quality operation of wireless microphone systems.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz frequency range; Part 1: Technical characteristics and test methods33.160.50PriborAccessories33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 300 422-1 Version 1.2.2SIST EN 300 422-1 V1.2.2:2003en01-december-2003SIST EN 300 422-1 V1.2.2:2003SLOVENSKI
STANDARD
ETSIEN300422-1V1.2.2(2000-08)EuropeanStandard(Telecommunicationsseries)ElectromagneticcompatibilityandRadiospectrumMatters(ERM);Wirelessmicrophonesinthe25MHzto3GHzfrequencyrange;Part1:TechnicalcharacteristicsandtestmethodsSIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)2ReferenceREN/ERM-RP08-0310-1Keywordsradio,radiomic,testingETSI650RoutedesLuciolesF-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 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)3ContentsIntellectualPropertyRights.6Foreword.6Introduction.61Scope.82References.93Definitions,symbolsandabbreviations.103.1Definitions.103.2Symbols.103.3Abbreviations.114Functionalcharacteristics.114.1Radiomicrophonedescriptions.114.2Inearmonitoring.115General.125.1Presentationofequipmentfortestingpurposes.125.1.1Choiceofmodelfortypetesting.125.1.2Definitionsofalignmentandswitchingranges.135.1.3DefinitionofthecategoriesoftheAlignmentRange(AR1andAR2).135.1.4Choiceoffrequencies.135.1.5TestingofsinglechannelequipmentofcategoryAR1.135.1.6TestingofsinglechannelequipmentofcategoryAR2.135.1.7TestingoftwochannelequipmentofcategoryAR1.145.1.8TestingoftwochannelequipmentofcategoryAR2.145.1.9Testingofmulti-channelequipment(morethantwochannels)ofcategoryAR1.145.1.10Testingofmulti-channelequipment(morethantwochannels)ofcategoryAR2(switchingrangelessthanalignmentrange).145.1.11Testingofmulti-channelequipment(morethantwochannels)ofcategoryAR2(switchingrangeequalsthealignmentrange).155.1.12TestingofequipmentwithoutapermanentexternalRFport.155.1.12.1EquipmentwithapermanentinternalRFport.155.1.12.2EquipmentwithatemporaryRFport.155.2Mechanicalandelectricaldesign.155.2.1General.155.2.2Limitingthreshold.165.2.3Controls.165.2.4TypeapprovalwithIntegralantenna.165.2.5Marking(equipmentidentification).165.2.5.1Regulatorymarking.175.3Interpretationofthemeasurementresults.176Testconditions,powersourcesandambientconditions.176.1Normalandextremetest-conditions.176.2Testpowersource.176.3Normaltestconditions.186.3.1Normaltemperatureandhumidity.186.3.2NormaltestpowersourceVoltage.186.3.2.1MainsVoltage.186.3.2.2Nickel-cadmiumcells.186.3.2.3Otherpowersources.186.4Extremetestconditions.186.4.1Extremetemperatures.186.4.1.1Proceduresfortestsatextremetemperatures.186.4.2ExtremetestpowersourceVoltages.19SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)46.4.2.1MainsVoltage.196.4.2.2Re-chargeablebatterypowersources.196.4.2.3Powersourcesusingothertypesofbatteries.196.4.2.4Otherpowersources.197Generalconditions.207.1Normaltestmodulation.207.2Artificialantenna.217.3Testfixture.217.4Testsiteandgeneralarrangementsforradiatedmeasurements.217.5Modesofoperationofthetransmitter.227.6Arrangementfortestsignalsattheinputofthetransmitter.228Methodsofmeasurementandlimitsfortransmitterparameters.228.1Frequencyerror.228.1.1Definition.228.1.2Methodofmeasurement.228.1.3Limit.228.2Carrierpower.238.2.1Definition.238.2.2Methodofmeasurementforequipmentwithoutintegralantenna.238.2.3Methodofmeasurementforequipmentwithintegralantenna.238.2.3.1Methodofmeasurementundernormaltestconditions.238.2.3.2Methodofmeasurementunderextremetestconditions.238.2.4Limit.248.3Channelbandwidth.248.3.1Definition.248.3.2MeasurementofNecessaryBandwidth(BN).248.3.3Limits.258.4Spuriousemissions.268.4.1Definitions.268.4.2Methodofmeasuringtheeffectiveradiatedpower.268.4.3Limits.268.4.4Measuringreceiver.269Receiver.279.1Spuriousemissions.279.1.1Definitions.279.1.2Methodofmeasuringthepowerlevelinaspecifiedload.279.1.3Methodofmeasuringtheeffectiveradiatedpoweroftheenclosure.279.1.4Methodofmeasuringtheeffectiveradiatedpower.289.1.5Limits.2810Measurementuncertainty.28AnnexA(normative):Radiatedmeasurement.29A.1Testsitesandgeneralarrangementsformeasurementsinvolvingtheuseofradiatedfields.29A.1.1Outdoortestsite.29A.1.1.1Testsupportforbodywornequipment.30A.1.1.2Standardposition.30A.1.2Testantenna.30A.1.3Substitutionantenna.31A.1.4Optionaladditionalindoorsite.31A.2Guidanceontheuseofradiationtestsites.32A.2.1Measuringdistance.32A.2.2Testantenna.32A.2.3Substitutionantenna.32A.2.4Artificialantenna.32A.2.5Auxiliarycables.32SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)5A.3Furtheroptionalalternativeindoortestsiteusingananechoicchamber.33A.3.1Exampleoftheconstructionofashieldedanechoicchamber.33A.3.2Influenceofparasiticreflectionsinanechoicchambers.33A.3.3Calibrationoftheshieldedanechoicchamber.34AnnexB(normative):MeasurementofNecessaryBandwidth(BN).36AnnexC(informative):Graphicrepresentationoftheselectionofequipmentandfrequenciesfortestingofsingleandmulti-frequencyequipment.37History.39SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)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-partENcoveringtheElectromagneticcompatibilityandRadiospectrumMatters(ERM);Wirelessmicrophonesinthe25MHzto3GHzfrequencyrange,asidentifiedbelow:Part1:"Technicalcharacteristicsandtestmethods";Part 2: "Harmonized EN under article 3.2 of the R&TTE Directive".EveryENpreparedbyETSIisaVoluntarystandard.Thepresentdocumentmaycontaintextconcerningconformancetestingoftheequipmenttowhichitrelates.Thistextshouldbeconsideredasguidanceonlyanddoesnotmakethepresentdocumentmandatory.AnnexAprovidesnormativespecificationsconcerningradiatedmeasurements.AnnexBdescribesthetestset-upforthemeasurementofNecessaryBandwidth(BN).AnnexCprovidesagraphicrepresentationoftheequipmentandfrequenciesforthetestingofsingleandmulti-frequencyequipment.NationaltranspositiondatesDateoflatestannouncementofthisEN(doa):31October2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30April2001DateofwithdrawalofanyconflictingNationalStandard(dow):30April2001IntroductionThepresentdocumentisbasedontheCEPTRecommendationT/R20-06[1].ThisCEPTRecommendationhasbeenaframethatledtomanynationalprescriptionsthatdiffered,sometimessubstantially,betweenEuropeancountries.Therapidlyincreasingquantitiesofwirelessmicrophones(hereafterreferredtoasradiomicrophones)inoperation,bothlegalandillegal,togetherwiththegreatermobilityoftheusers,eitherprofessionalorprivate,hasledtoaserioussituationwithmanyoccurrencesofinterferenceandirregularoperation.Legalradiomicrophones,beingfundamentallylowpowerdevices,areinterferedwithmorethanthegeneratorsoftheinterference,andsufferprimarilyfromthissituation.SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)7Inpreparingthepresentdocument,muchattentionhasbeengiventoassurealowinterferenceprobability,whileatthesametimeallowingamaximumflexibilityandservicetotheend-user.ThepresentdocumentprovidesthenecessaryparametersforequipmenttoobtaincommonapprovalthroughoutEurope.Italsoisintendedtomakeiteasierforthefrequencymanagementauthoritiestofindharmonizedfrequencyallocations.Commontechnicalspecificationsandharmonizedfrequencyallocationsareexpectedtoreducegreatlythepresentproblemsofinterferenceandillegaluse.Thepresentdocumentisatypetestingstandardbasedonspectrumutilizationparametersanddoesnotincludeperformancecharacteristicsthatmayberequiredbytheuserorrequirementsforinterfacingequipment.ThepresentdocumentisintendedtospecifytheminimumperformanceandthemethodsofmeasurementofRadioMicrophonesandIn-earmonitoringsystemsasspecifiedinthescope.In-earmonitoringsystemsmaybetestedtoeitherthepresentdocument(<200kHzmax.occupiedbandwidth)ortoEN301357-1[9](<300kHzmax.occupiedbandwidth)withdueconsiderationofpowerandoperatingfrequency.SincetheinitialadoptionofI-ETS300422[12]therehasbeentheintroductionoffurthertypesofequipment-Cordlessheadphones/loudspeakersandconsumerIn-earmonitoring.Thesearelowpowerwidebandsystemsthathavesomecharacteristicsincommonwithradiomicrophonesbutarenotcompatiblewithmultichannelradiomicrophones.ThisequipmentiscoveredbyEN301357-1[9].Thepresentdocumentalsocoversradiomicrophonesusedinthe863MHzto865MHzband,withamaximumpowerof10mW.Typetestmeasurementsshouldbeperformedinoneoftheaccreditedtestlaboratories,acceptedbytheVariousnationalregulatoryauthoritiesinordertogranttypeapproval,providedthenationalregulatoryrequirementsaremet.ThisisincompliancewithCEPT/ERCRecommendation01-06[2]andERCDecisionERC/DEC(97)10[3].Inaddition,nationaladministrationsmayaccepta"certificateofconformity"basedonatypetestreport.Ifequipmentavailableonthemarketisrequiredtobechecked,itshouldbetestedinaccordancewiththemethodsofmeasurementspecifiedinthepresentdocument.SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)81ScopeThepresentdocumentcoverstheminimumcharacteristicsconsiderednecessaryinordertomakethebestuseoftheavailablefrequencies.Itdoesnotnecessarilyincludeallthecharacteristicsthatmayberequiredbyauser,nordoesitnecessarilyrepresenttheoptimumperformanceachievable.Thepresentdocumentappliestoequipmentwithmodulationsystemsoperatingonradiofrequenciesbetween25MHzand3GHz.AlthoughanalogueFrequencyModulation(FM)isatpresentusedforthemajorityofradiomicrophonesandotherequipmentcoveredbythepresentdocument,thisspecificationdoesnotprecludeanyotherconstantcarriermodulationtechnique,e.g.GaussianFilteredMinimumShiftKeying(GMSK)orGeneralizedTamedFrequencyModulation(GTFM),providedthatthemodulationspectrumlieswithinastandardizedspectralmask.ThepresentdocumentdoesnotapplytoradiomicrophonesorinearmonitoringequipmentemployingTimeDivisionMultipleAccess(TDMA),frequencyhoppingandspreadspectrumorsimilarformsofmodulation.Electromagneticcompatibility(EMC)requirementsarecoveredbyETS300445[8].AdditionalstandardsorspecificationsmayberequiredforequipmentintendedtointerfacetothePublicSwitchedTelephoneNetwork(PSTN).Thisfacilitymaybesubmittedtoregulatoryconditions.Thepresentdocumentmaybeusedbyaccreditedtestlaboratoriesfortypetestingoftheequipment.Theperformanceoftheequipmentsubmittedfortypetestingshouldberepresentativeoftheperformanceofthecorrespondingproductionmodels.Thepresentdocumentcontainsinstructionsforthepresentationofequipmentfortypetestingpurposes.Powerlimitsrecommendedinthepresentdocumenthavebeenchosentoallowmaximumsimultaneousreusageoffrequencyallocations.Nationalregulationsonpoweroutputmayapplyuptothelimitsquotedbelow.NOTE:ForhigherpowerequipmentreferenceshouldbemadetoEN300454-1[7]Widebandaudiolinks.Equipmenteffectiveradiatedpower(erp)orconductedClass1Class2RadioMicrophones50mW2mWInearmonitoring10mW2mWTourguidesystems10mW2mWAidsforthehandicapped10mW2mWThetypesofequipmentcoveredbythepresentdocumentareasfollows:-professionalhandheldradiomicrophones;-professionalbodywornradiomicrophones;-inearmonitoringsystems;-consumerradiomicrophones;-tourguidesystems;-aidsforthehandicapped.Theclassesofequipmentgiveninthepresentdocumentareasfollows:-class1equipmentwouldnormallybeconsideredasacategoryrequiringanoperatorlicence;-class2equipmentwouldbeconsideredinsomecountriesasnotrequiringanoperatorlicence.SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)92ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,Versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestVersionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterVersionspublishedasanENwiththesamenumber.[1]CEPTRecommendationT/R20-06(1977):"Transmittersandreceiversforlow-powerCordlessMicrophonesystems".[2]CEPT/ERCRecommendation01-06:"Procedureformutualrecognitionoftypetestingandtypeapprovalforradioequipment".[3]CEPT/ERC/DEC(97)10:"Themutualrecognitionofconformityassessmentproceduresincludingmarkingofradioequipmentandradioterminalequipment".[4]ITU-RRecommendationBS.559-2:"Objectivemeasurementofradio-frequencyprotectionratiosinLF,MFandHFbroadcasting".[5]IEC60244:"Methodsofmeasurementforradiotransmitters".[6]ETSIETR028:"RadioEquipmentandSystems(RES);Uncertaintiesinthemeasurementofmobileradioequipmentcharacteristics".[7]ETSIEN300454-1:"ElectromagneticcompatibilityandRadiospectrumMatters(ERM);Widebandaudiolinks;Part1:Technicalcharacteristicsandtestmethods".[8]ETSIETS300445:"RadioEquipmentandSystems(RES);ElectroMagneticCompatibility(EMC)standardforwirelessmicrophonesandsimilarRadioFrequency(RF)audiolinkequipment".(includingA1)[9]ETSIEN301357-1:"ElectromagneticcompatibilityandRadiospectrumMatters(ERM);AnaloguecordlesswidebandaudiodevicesusingintegralantennasoperatingintheCEPTrecommended863MHzto865MHzfrequencyrangePart1:Technicalcharacteristicsandtestmethods".[10]ITU-RRecommendationBS.468-4:"Measurementofaudio-frequencynoiseVoltagelevelinsoundbroadcasting".[11]CEPT/ERCRecommendation70-03:"relatingtotheuseofshortrangedevices(SRD)".[12]ETSII-ETS300422:"RadioEquipmentandSystems(RES);Technicalcharacteristicsandtestmethodsforwirelessmicrophonesinthe25MHzto3GHzfrequencyrange".SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)103Definitions,symbolsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:conductedmeasurements:measurementsthataremadeusingadirect50ΩconnectiontotheEUTintegralantenna:antenna,withorwithoutaconnector,designedas,anddeclaredasbythemanufacturer,anindispensablepartoftheequipmentintegralmicrophone:microphone,designedas,anddeclaredasbythemanufacturer,anindispensablefixedpartoftheequipmentlimiterthreshold:audioinputoroutputlevelatwhichthetransmitteraudiolimiteractionmaybesaidtocommence.ItisspecifiedwithanyaccessibleVariablegaincontrolssetaccordingtothemanufacturer'sinstructions,withasinusoidalinputsignalof500Hzradiatedmeasurements:measurementsthatinvolvetheabsolutemeasurementofaradiatedelectromagneticfieldcarriergrid:evenlyspacedrasterinagivenfrequencybandfortheallocationofcarrierfrequencies.Theminimumdistanceoftwocarriersinuseisamultipleoftherasterdependentontypeandusageoftheequipmentchannelbandwidth:frequencybandofdefinedwidth(asamultipleofthecarriergrid)includingsafetymarginforoperationonadjacentchannels,locatedsymmetricallyaroundcarrierfrequencyinthecarriergridport:anyconnectionpointonorwithintheEquipmentUnderTest(EUT)intendedfortheconnectionofcablestoorfromthatequipmentRadioFrequency(RF)port:anyconnectionpointonorwithintheEUTintendedfortheconnectionofRFcables.RFportsaretreatedas50Ωconnectionpointsunlessotherwisespecifiedbythemanufacturer3.2SymbolsForthepurposesofthepresentdocument,thefollowingsymbolsapply:λwavelengthinmetresµFmicroFaradµWmicroWattdBcdBrelativetothecarrierlevelEfieldstrengthEoreferencefieldstrength,(seeannexA)fccarrierfrequencyfooperatingfrequencyGHzgigaHertzHHenrykHzkiloHertzlimlimitingMHzmegaHertzmWmilliWattnWnanoWattRdistance,(seeannexA)Roreferencedistance,(seeannexA)SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)113.3AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:acalternatingcurrentAR1AlignmentRange1AR2AlignmentRange2BdeclaredchannelBandwidth(seetable1)BNNecessaryBandwidthdcdirectcurrenterpeffectiveradiatedpowerEUTEquipmentUnderTestGMSKGaussianFilteredMinimumShiftKeyingGTFMGeneralizedTamedFrequencyModulationLFLowFrequencyPSTNPublicSwitchedTelephoneNetworkRBWResolutionBandWidthRFRadioFrequencyTDMATimeDivisionMultipleAccessTxTransmitterVBWVideoBandWidth4Functionalcharacteristics4.1RadiomicrophonedescriptionsRadiomicrophonesnormallyusewidebandfrequencymodulationtoachievethenecessaryaudioperformanceforprofessionaluse.Forthemajorityofapplicationsthemodulatedtransmittersignalrequiresachannelbandwidthof200kHz.Theradiopartofthetransmitterandreceivershallbemadeupexclusivelyfromequipmentthathasbeenapprovedaccordingtothepresentdocument.Otherequipmentthatmaybeconnectedtoradiomicrophonesshallfulfilthestandardsapplicabletothatequipment(ifany).4.2InearmonitoringInearmonitoringequipmentisusedbystageandstudioperformerstoreceivepersonalfoldback(monitoring)oftheperformance.ThiscanbejusttheirownVoiceoracomplexmixofsources.Thebandwidthrequirementofprofessionalinearmonitoringequipmentissimilartothoseofradiomicrophones.Theradiopartofthetransmitterandreceivershallbemadeupexclusivelyfromequipmentthathasbeenapprovedaccordingtothepresentdocument.Otherequipmentthatmaybeconnectedtoinearmonitoringequipmentshallfulfilthestandardsapplicabletothatequipment(ifany).SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)125General5.1PresentationofequipmentfortestingpurposesEachequipmentsubmittedfortypetestingshallfulfiltherequirementsofthepresentdocumentonallchannelsoverwhichitisintendedtooperate.Theapplicantshallcompletetheappropriateapplicationformwhensubmittingequipmentfortypetesting.ForradiomicrophonesthatmayuseaVarietyofaudiocapsulesthemanufacturershallsupplythetestsamplewithanaudiotestfixture,tosubstitutetheaudiocapsule,withsuitableinputandoutputimpedance.Theapplicantshallstatethechannelbandwidth(s)withinwhichtheequipmentisdesignedtooperatechosenfromtable1.Table1:ChannelbandwidthDeclaredchannelBandwidth(B)Designation50kHzL75kHzM100kHzP150kHzQ200kHzRTheapplicantshallstatetheaudioinputlimitingthreshold,(seesubclause5.2.2).Theapplicantshallalsosupplyallrelevantinterfaceinformationtoallow:-directcurrent(dc)powerconnection;-RFconnection;-audioconnection;-thelimitingofthetransmitter;and-thesettingofanyinputaudiolevelcontrolsfornormaloperation,forasinusoidalinputsignalof500Hz.Themanufacturershallspecifythesettingsofanyothercontrolsnecessarytoavoidinvalidatingthetestmeasurements.Besidesthetechnicaldocumentation,theapplicantshouldalsosupplyanoperatingmanualforthedevice(s).Tosimplifyandharmonizethetypetestingproceduresbetweenthedifferenttestlaboratories,measurementshallbeperformed,accordingtothepresentdocument,onsamplesofequipmentdefinedinsubclauses5.1.1to5.1.12.2.Thesesubclausesareintendedtogiveconfidencethattherequirementssetoutinthepresentdocumenthavebeenmetwithoutthenecessityofperformingmeasurementsonallchannels.5.1.1ChoiceofmodelfortypetestingTheapplicantshallprovideoneormoreproductionmodel(s)oftheequipment,includingallantenna(s)designedfortheequipment,andthatarerequiredtobecoveredbythetypetesting.Iftypeapprovalisgivenonthebasisoftestsonapreliminarymodel,thecorrespondingproductionmodelsshallbeidenticalinallrespectswiththepreliminarymodeltested.InthecaseofradiomicrophoneequipmentwithoutapermanentexternalRFport,seesubclause5.1.12.SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)135.1.2DefinitionsofalignmentandswitchingrangesThealignmentrangeisdefinedasthefrequencyrangeoverwhichthereceiverandthetransmittercanbeprogrammedand/orre-alignedtooperatewithasingleoscillatorfrequencymultiplication,withoutanyphysicalchangeofcomponentsotherthan:-programmablereadonlymemoriessuppliedbythemanufacturerorthemanufacturer'snominee;-crystals;-frequencysettingelements(forthereceiverandtransmitter).Theseelementsshallnotbeaccessibletotheenduserandshallbedeclaredbytheapplicantintheapplicationform.Theswitchingrangeisthemaximumfrequencyrangeoverwhichthereceiverorthetransmittercanbeoperatedwithoutre-programmingorrealignment.Theapplicantshall,whensubmittingequipmentfortest,statethealignmentrangesforthereceiverandtransmitter.Theapplicantshallalsostatetheswitchingrangeofthereceiverandthetransmitter(whichmaydiffer).5.1.3DefinitionofthecategoriesoftheAlignmentRange(AR1andAR2)Thealignmentrangeforthereceiverandtransmitter,whichmaybedifferent,fallsintooneoftwocategories(seeannexCforagraphicalrepresentation).AR1:thiscorrespondstoalimitoflessthanorequalto10%ofthehighestfrequencyofthealignmentrange,whichisequaltoorlessthan500MHz,orlessthanorequalto5%wherethehighestalignmentfrequencyisabove500MHz.AR2:thiscorrespondstoalimitofgreaterthan10%ofthehighestfrequencyofthealignmentrange,whichisequaltoorlessthan500MHz,orgreaterthan5%wherethehighestalignmentfrequencyisabove500MHz.5.1.4ChoiceoffrequenciesThefrequenciesfortestingshallbechosenbytheapplicant,inaccordancewithsubclauses5.1.5to5.1.11.5.1.5TestingofsinglechannelequipmentofcategoryAR1Fulltestsshallbecarriedoutonachannelwithin100kHzofthecentrefrequencyofthealignmentrangeononesampleoftheequipment.5.1.6TestingofsinglechannelequipmentofcategoryAR2Threesamplesshallbetested.Testsshallbecarriedoutonatotalsetofthreechannelsasfollows:-sampleoneshallbewithin100kHzofthehighestfrequencyofthealignmentrange;-sampletwoshallbewithin100kHzofthelowestfrequencyofthealignmentrange;-samplethreeshallbewithin100kHzofthecentrefrequencyofthealignmentrange.Fulltestsshallbecarriedoutonallthreechannels.SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)145.1.7TestingoftwochannelequipmentofcategoryAR1Onesampleshallbesubmittedtoenableteststobecarriedoutonbothchannels.Thefrequencyoftheupperchannelshallbewithin100kHzofthehighestfrequencyoftheswitchingrange.Thefrequencyofthelowerchannelshallbewithin100kHzofthelowestfrequencyoftheswitchingrange.Inaddition,theaverageofthefrequenciesofthetwochannelsshallbewithin100kHzofthecentrefrequencyofthealignmentrange.Fulltestsshallbecarriedoutonbothchannels.5.1.8TestingoftwochannelequipmentofcategoryAR2Threesamplesoftheequipmentshallbetested.Testsshallbecarriedoutonatotaloffourchannels.Thehighestfrequencyoftheswitchingrangeofonesampleshallbewithin100kHzofthecentrefrequencyofthealignmentrange.Thefrequencyoftheupperchannelshallbewithin100kHzofthehighestfrequencyoftheswitchingrangeandthefrequencyofthelowerchannelshallbewithin100kHzofthelowestfrequencyoftheswitchingrange.Fulltestsshallbecarriedoutonbothchannels.Thefrequencyofoneofthechannelsofthesecondsampleshallbewithin100kHzofthehighestfrequencyofthealignmentrange.Fulltestsshallbecarriedoutonthischannel.Thefrequencyofoneofthechannelsofthethirdsampleshallbewithin100kHzofthelowestfrequencyofthealignmentrange.Fulltestsshallbecarriedoutonthischannel.5.1.9Testingofmulti-channelequipment(morethantwochannels)ofcategoryAR1Onesampleoftheequipmentshallbesubmittedtoenableteststobecarriedoutonthreechannels.Thecentrefrequencyoftheswitchingrangeofthesampleshallcorrespondtothecentrefrequencyofthealignmentrange.Fulltestsshallbecarriedoutonafrequencywithin100kHzofthecentre,lowestandhighestfrequenciesoftheswitchingrange.5.1.10Testingofmulti-channelequipment(morethantwochannels)ofcategoryAR2(switchingrangelessthanalignmentrange)Threesamplesoftheequipmentshallbetested.Testsshallbecarriedoutonatotaloffivechannels.Thecentrefrequencyoftheswitchingrangeofonesampleshallbewithin100kHzofthecentrefrequencyofthealignmentrange.Thefrequencyoftheupperchannelshallbewithin100kHzofthehighestfrequencyoftheswitchingrangeandthefrequencyofthelowerchannelshallbewithin100kHzofthelowestfrequencyoftheswitchingrange.Fulltestsshallbecarriedoutonthecentrechannel,spuriousemissiontestsonlyontheupperandlowerchannels.Thefrequencyofoneofthechannelsofthesecondsampleshallbewithin100kHzofthehighestfrequencyofthealignmentrange.Fulltestsshallbecarriedoutonthischannel.Thefrequencyofoneofthechannelsofthethirdsampleshallbewithin100kHzofthelowestfrequencyofthealignmentrange.Fulltestsshallbecarriedoutonthischannel.SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)155.1.11Testingofmulti-channelequipment(morethantwochannels)ofcategoryAR2(switchingrangeequalsthealignmentrange)Onesampleshallbesubmittedtoenableteststobecarriedoutonthreechannels.Thecentrefrequencyoftheswitchingrangeofthesampleshallcorrespondtothecentrefrequencyofthealignmentrange.Fulltestsshallbecarriedoutonafrequencywithin100kHzofthecentrefrequencyoftheswitchingrangeandwithin100kHzofthelowestandalsowithin100kHzofthehighestfrequencyoftheswitchingrange.5.1.12TestingofequipmentwithoutapermanentexternalRFportTofacilitaterelativemeasurements,usemaybemadeofatestfixtureasdescribedinsubclause7.3,ortheequipmentmaybesuppliedwithapermanentinternalortemporaryinternal/externalRFport.5.1.12.1EquipmentwithapermanentinternalRFportThewaytoaccessapermanentinternalRFportshallbestatedbytheapplicantwiththeaidofadiagram.ThefactthatusehasbeenmadeofapermanentinternalRFportshallberecordedinthetestreport.5.1.12.2EquipmentwithatemporaryRFportTheapplicantshallsubmittwosetsofequipmenttothetestlaboratory,onefittedwithatemporary50ΩRFconnectorwiththeantennadisconnectedandtheotherwiththeantennaconnected.Eachequipmentshallbeusedfortheappropriatetests.ThewaythetemporaryRFportisimplementedshallbestatedbytheapplicantwiththeaidofadiagram.ThefactthatusehasbeenmadeofthetemporaryRFporttofacilitatemeasurementsshallbestatedinthetestreport.TheadditionofatemporaryRFportshouldnotinfluencetheperformanceoftheEUT.5.2Mechanicalandelectricaldesign5.2.1GeneralTheequipmentsubmittedbytheapplicantshallbedesigned,constructedandmanufacturedinaccordancewithsoundengineeringpractice,andwiththeaimofminimizingharmfulinterferencetootherequipmentandservices.SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)165.2.2LimitingthresholdThelimitingthresholdisdefinedastheminimumaudioinputlevelatwhichtheslopeoftheaudioinput/outputtransfercurve,withthelevelsexpressedindB,isgreaterorequalto4:1(seefigure1).Fornon-linearorcompandedsystems,thispointisdeterminedwithacomplimentaryaudiodecodingmoduleconnectedtothetestdemodulator.Themeasurementismadeat500Hzwithanyuseraccessiblegaincontrolssetaccordingtothemanufacturer'sinstructions.ThemeasurementismadewithaquasipeakmetertoITU-RRecommendationBS.468-4[10]intheflat(unweighted)condition._____|||||[phone]-100dB(lim)+10dB(Arbitraryreference)AudiooutputlevelfromcomplimentaryaudiodecodingcircuitsAudioinputleveltotransmitter(dBrelativetolimitingthreshold)Slope=4:1Slope=1:1Figure1:DeterminationofaudioinputlimitingthresholdInthecaseofatransmitterdesignedforacousticalinputonly,withanintegralmicrophoneandnolimiter,asoundpressureof128dBrelativeto20µPaisregardedasthelimitingthreshold.5.2.3ControlsThosecontrolsthat,ifmaladjusted,mightincreasetheinterferingpotentialitiesoftheequipmentshallonlybeaccessiblebypartialorcompletedisassemblyofthedeviceandrequiringtheuseoftools.5.2.4TypeapprovalwithIntegralantennaTypeapprovalofequipmentwithintegralantennaonlyappliestothatequipmenttogetherwiththeantennaoriginallysuppliedbythemanufacturerfortypetesting.5.2.5Marking(equipmentidentification)TheequipmentshallbemarkedinaVisibleplace.Thismarkingshallbelegible,tamper-proofanddurable.Themarkingshallinclude:-thenameofthemanufacturerorhistrademark;-thetypedesignationofthemanufacturer;-serialnumber;-operationalfrequencyrange;-nationaland/orinternationaltypeapproval;-modulationtype.SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)17Alternativelythemarkingshallconsistof:-anormallyreadablelabel;and-theinformationdetailedabove,storedelectronicallyinasecureformat,whichiseasilyreadablebyeither:-thereceiverprovidedbythemanufacturer;or-areadingsystemprovidedbythemanufacturerwitheachtransmitter.5.2.5.1RegulatorymarkingTheequipmentshallbemarked,whereapplicable,inaccordancewithCEPT/ERCRecommendation70-03[11].Wherethisisnotapplicabletheequipmentshallbemarkedinaccordancewithnationalregulatoryrequirements.5.3InterpretationofthemeasurementresultsTheinterpretationoftheresultsrecordedintheappropriatetestreportforthemeasurementsdescribedinthepresentdocumentshallbeasfollows:-themeasuredValuerelatedtothecorrespondinglimitshallbeusedtodecidewhetheranequipmentmeetstherequirementsofthepresentdocument;-themeasurementuncertaintyValueforthemeasurementofeachparametershallbeseparatelyincludedinthetestreport;-therecordedValueofthemeasurementuncertaintyshallbe,foreachmeasurement,equaltoorlowerthanthefiguresinthetableofmeasurementuncertaintyasinclause10.6Testconditions,powersourcesandambientconditions6.1Normalandextremetest-conditionsTypetestsshallbemadeundernormaltestconditions,andalso,wherestated,underextremetestconditions.Thetestconditionsandproceduresshallbeasspecifiedinsubclauses6.2to6.4.2.4.6.2TestpowersourceDuringtypeteststhepowersourceoftheequipmentshallbereplacedbyatestpowersource,capableofproducingnormalandextremetestVoltagesasspecifiedinsubclauses6.3.2and6.4.2.Theinternalimpedanceofthetestpowersourceshallbelowenoughforitseffectonthetestresultstobenegligible.Forthepurposeofthetests,theVoltageofthepowersourceshallbemeasuredattheinputterminalsoftheequipment.Forbatteryoperatedequipment,thebatteryshallberemovedandthetestpowersourceshallbesuitablydecoupledandappliedasclosetotheequipmentbatteryterminalsaspracticable.Forradiatedmeasurementsanyexternalpowerleadsshouldbearrangedsoasnottoaffectthemeasurements.Ifnecessarytheexternalpowersupplymaybereplacedwiththeequipment'sowninternalbatteriesattherequiredVoltage,thisshallbestatedonthetestreport.Iftheequipmentisprovidedwithapowercableorpowersocket,thetestVoltageshallbethatmeasuredatthepointofconnectionofthepowercabletotheequipment.DuringteststhepowersourceVoltagesshallbewithinatoleranceof<±1%relativetotheVoltageatthebeginningofeachtest.TheValueofthistolerancecanbecriticalforcertainmeasurements.UsingasmallertoleranceprovidesabetteruncertaintyValueforthesemeasurements.Ifinternalbatteriesareused,attheendofeachtesttheVoltageshallbewithinatoleranceof<±1%relativetotheVoltageatthebeginningofeachtest.SIST EN 300 422-1 V1.2.2:2003

ETSIETSIEN300422-1V1.2.2(2000-08)186.3Normaltestconditions6.3.1NormaltemperatureandhumidityThenormaltemperatureandhumidityconditionsfortestsshallbeanyconvenientcombinationoftemperatureandhumiditywithinthefollowingranges:-temperature:+15°Cto+35°C;-relativehumidity:20%to75%.Whenitisimpracticabletocarryoutthetestsundertheconditionsstatedabove,anotetothiseffect,statingtheactualtemperatureandrelativehumidityduringthetests,shallbeaddedtothetestreport.6.3.2NormaltestpowersourceVoltage6.3.2.1MainsVoltageThenormaltestVoltageforequipmenttobeconnectedtothemainsshallbethenominalmainsVoltage.Forthepurposeofthepresentdocument,thenominalVoltageshallbethedeclaredmainsVoltage,oranyofthedeclaredmainsVoltages,forwhichtheequipmentwasdesigned.Thefrequencyofthetestpowersourcecorrespondingtothealternatingcurrent(ac)mainsshallbebetween49Hzand51Hz.6.3.2.2Nickel-cadmiumcellsWhentheradioequipmentisintendedforoperationfromtheusualtypesofnickel-cadmiumcellthenominaltestVoltageshallbe1,2Vpercell.6.3.2.3OtherpowersourcesForoperationfromotherpowersourcesortypesofbattery(primaryorsecondary),thenormaltestVoltageshallbethatdeclaredbytheequipmentmanufacturerandapprovedbythetestlaboratory.TheValuesshallbestatedinthetestreport.6.4Extremetestconditions6.4.1ExtremetemperaturesFortestsatextremetemperatures,measurementsshallbemadeinaccordancewiththeproceduresspecifiedin
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