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SIST EN 300 422-1 V1.2.2:2003

(Main)

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

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

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

Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) – Brezžični mikrofoni v frekvenčnem območju od 25 MHz do 3 GHz – 1. del: Tehnične karakteristike in preskusne metode

General Information

Status
Published
Publication Date
30-Nov-2003
ICS
33.060.99 - Other equipment for radiocommunications
33.100.01 - Electromagnetic compatibility in general
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

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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



SIST EN 300 422-1 V1.2.2:2003



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.:+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.©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)BNNecessaryBandwidthdcdirectcurrenterpeffectiveradiatedpowerEUTEquipmentUnderTestGMSKGaussianFilteredMinimumShiftKeyingGTFMGeneralizedTamedFrequencyModulationLFLowFrequencyPSTNPublicSwitchedTelephoneNetworkRBWResolutionBandWidthRFRadioFrequencyTDMATimeDivisionMultipleAccessTxT
...

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will apply or those detailed in the latest version of:
• EC Decision 2005/928/EC [i.12];
• ECC/DEC/(05)02 [i.13];
• the EC SRD Decision [i.11]; or
• CEPT/ERC/REC 70-03 [i.9], annex 10 (see http://www.erodocdb.dk/).
Unless otherwise stated in the EC SRD Decision, ECC Decision or National Interfaces, Radio Microphones can be subject to individual licence.
The types of equipment covered by the present document are as follows:
• Professional Wireless Microphone Systems (PWMS) [i.1];
• in ear monitoring systems;
• consumer radio microphones;
• tour guide systems; and
• Assistive Listening Devices (Aids for the handicapped) comprising personal and public hearing aid systems.

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SIST
SIST EN 300 422-2 V1.2.2:2008(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM) - Wireless microphones in the 25 MHz to 3 GHz frequency range - Part 2: Harmonized EN covering essential requirements of Article 3.2 of the R&TTE Directive
ETSI EN 300 422-2 V1.2.2 (2008-01)

The present document applies to equipment operating on radio frequencies between 25 MHz and 3 GHz, using analogue, digital and hybrid (using both analogue and digital modulation). The present document does not apply to radio microphones or in ear monitoring equipment employing Time Division Multiple Access (TDMA), modulation.
The present document applies to the following radio equipment types:
1) professional hand held radio microphones;
2) professional body worn radio microphones;
3) in ear monitoring systems, etc.;
4) consumer radio microphones;
5) tour guide systems;
6) Assistive Listening Devices (Aids for the handicapped).
The maximum power recommended for equipment covered by the present document is 250 mW (erp below 1 GHz and eirp above 1 GHz).
The present document is intended to cover the provisions of Directive 1999/5/EC (R&TTE Directive) [2], Article 3.2, which states that "….. radio equipment shall be so constructed that it effectively uses the spectrum allocated to terrestrial/space radio communications and orbital resources so as to avoid harmful interference".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of Article 3 of the R&TTE Directive may apply to equipment within the scope of the present document.
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.

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SIST EN 300 422-1 V1.3.2:2008
Electromagnetic compatibility and Radio spectrum Matters (ERM) - Wireless microphones in the 25 MHz to 3 GHz frequency range - Part 1: Technical characteristics and methods of measurement
ETSI EN 300 422-1 V1.3.2 (2008-03)

To  investigate the items listed in GSC-10/8(GRSC) Radio microphones and cordless audio Standardization, and  prepare changes to EN 300422 plus  GRSC 001 and TS 102-192. This work item will also consider the incorperation of  EN 301-840 into the final document.The present document covers the minimum characteristics considered necessary in order to make the best use of the available frequency spectrum for wireless microphones. The present document specifies the minimum performance requirements and the methods of measurement of Assistive Listening Devices, radio microphones and in-ear monitoring systems. It does not necessarily include all the characteristics that may be required by a user, nor does it necessarily represent the optimum performance achievable. The present document applies to equipment operating on radio frequencies between 25 MHz and 3 GHz  using analogue, digital and hybrid (using both analogue and digital) modulation. The present document does not apply to radio microphones or in ear monitoring equipment employing Time Division Multiple Access (TDMA) modulation.
The maximum power recommended for equipment covered by the present document is 250 mW (erp below 1 GHz and eirp above 1 GHz). Equipment above 250 mW should be tested to EN 300 454-1 [6].
The present document also covers radio microphones used in the 863 MHz to 865 MHz band, with a maximum power of 10 mW.
Electromagnetic Compatibility (EMC) requirements are covered by EN 301 489-9 [7].
National regulations on maximum power output will apply or those detailed in the latest version of
CEPT/ERC/REC 70-03 [11], annex 10 (see http://www.erodocdb.dk/).
The classes of equipment given in the present document are as follows:
- class 1 equipment would normally be considered as a category requiring an operator licence;
- class 2 equipment would be considered in some countries as not requiring an operator licence.
The types of equipment covered by the present document are as follows:
• professional hand held radio microphones;
• professional body worn radio microphones;
• in ear monitoring systems;
• consumer radio microphones;
• tour guide systems; and
• Assistive Listening Devices (Aids for the handicapped).

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SIST EN 300 422 V1.2.1:2003(Main)
ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and test methods for wireless microphones in the 25 MHz to 3 GHz frequency range
ETSI EN 300 422 V1.2.1 (1999-07)

Amend I-ETS 300 422 to upgrade spectrum management aspects and convert to EN. Extend scope to cover: Cordless audio headphones (mono & stereo); cordless audio loudspeakers; professional in-ear monitoring systems.

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SIST I-ETS 300 422:1999(Main)
Radio Equipment and Systems (RES); Technical characteristics and test methods for wireless microphones in the 25 MHz to 3 GHz frequency range
ETSI I-ETS 300 422 ed.1 (1995-12)

Both technical and functional specifications of wide band audio wireless microphone systems and relevant measuring methods, ranging from HF up to and including UHF

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SIST-TP CEN/TR 12349:2023(Main)
Mechanical vibration - Guide to the health effects of vibration on the human body
CEN/TR 12349:2023

The aim of this CEN report is to provide information on the possible adverse health effects caused by exposure to vibration at work.  the report addresses manufacturers as well as employers and employees using vibrating machinery in order to improve their understanding of the possible health problems arising from occupational exposure to vibration.

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