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
- Abstract
Editrial modifications of EN 300 422 consequent to the adoption of EN 300 422-2
- Status
- Published
- Publication Date
- 30-Nov-2003
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2003
- Due Date
- 01-Dec-2003
- Completion Date
- 01-Dec-2003
SIST EN 300 422-1 V1.2.2:2003 is the SIST adoption of ETSI EN 300 422-1 for wireless microphones and in-ear monitoring systems in the 25 MHz to 3 GHz range. It specifies technical characteristics, test methods and measurement limits for type testing, so manufacturers, laboratories and regulators can check radio performance and spectrum behaviour in a consistent way.
What does SIST EN 300 422-1 V1.2.2:2003 specify?
SIST EN 300 422-1 V1.2.2:2003 sets the minimum technical characteristics and measurement methods for radio microphone and in-ear monitoring equipment that uses modulation systems in the stated frequency range. It is a type-testing standard, so it focuses on how to test equipment and what limits to apply rather than on user features.
The scope covers professional and consumer radiomicrophones, in-ear monitoring systems, tour guide systems and aids for the handicapped. It excludes TDMA, frequency hopping, spread spectrum and similar modulation forms. EMC requirements are handled by ETS 300 445, and equipment intended for the PSTN may need additional specifications.
The document is organized into clauses 1 to 10 and three annexes.
| Annex | What it covers |
|---|---|
| Annex A | Radiated measurement sites and arrangements |
| Annex B | Measurement of Necessary Bandwidth (BN) |
| Annex C | Graphic selection of equipment and frequencies for single- and multi-frequency testing |
What are the key requirements of SIST EN 300 422-1 V1.2.2:2003?
SIST EN 300 422-1 V1.2.2:2003 requires the applicant to present representative production models, declare the channel bandwidth, state the audio input limiting threshold and provide the interface information needed for RF, audio and power connections. In practice, the test lab needs this information to set up the equipment the same way it is meant to be used.
Equipment selection and test samples
Clause 5 defines how equipment is chosen for type testing, including the rules for single-channel, two-channel and multi-channel equipment and the distinction between Alignment Range 1 (AR1) and Alignment Range 2 (AR2). This matters because the standard does not test every channel in every case - it selects channels that represent the tuning range.
Test conditions and setup
Clauses 6 and 7 require normal and extreme test conditions, test power sources, ambient temperature and humidity ranges, and special handling for batteries and mains operation. The standard also specifies 500 Hz normal test modulation, an artificial antenna, and a test fixture for equipment without a permanent external RF port. That gives repeatable results across laboratories.
Transmitter requirements
Clause 8 covers transmitter frequency error, carrier power, channel bandwidth and spurious emissions. The limits depend on the operating frequency band and the declared channel bandwidth, so the manufacturer must classify the product correctly before testing. Clause 8 also uses a spectral mask based on the declared bandwidth, which means the transmitter must keep its useful energy inside the expected channel shape.
Receiver emissions
Clause 9 covers receiver spurious emissions, either as conducted levels at an external RF port or as radiated emissions from the cabinet or integral antenna. This is important because receivers can also create unwanted RF emissions that affect nearby equipment or spectrum use.
Measurement confidence
Clause 10 sets the measurement uncertainty expectations for the test system. Test reports therefore need to show not only the measured value, but also the uncertainty associated with that measurement.
What terms does SIST EN 300 422-1 V1.2.2:2003 define?
- Conducted measurements - measurements made through a direct 50 Ω connection to the Equipment Under Test (EUT).
- Integral antenna - an antenna that is an indispensable part of the equipment as declared by the manufacturer.
- Limiting threshold - the audio input or output level at which limiter action is considered to begin.
- Carrier grid - the evenly spaced frequency raster used to allocate carrier frequencies.
- Channel bandwidth - the declared frequency band that contains the transmitter necessary bandwidth plus safety margin for adjacent channels.
- Equipment Under Test (EUT) - the device submitted to the laboratory for type testing.
- Necessary Bandwidth (BN) - the bandwidth used in Clause 8 and Annex B to verify the transmitter signal occupancy.
- AR1 / AR2 - the two alignment-range categories used to decide how equipment is sampled and tested across its tuning range.
Who uses SIST EN 300 422-1 V1.2.2:2003?
SIST EN 300 422-1 V1.2.2:2003 is used by manufacturers and applicants preparing radio microphone or in-ear monitoring equipment for type testing. It is also used by accredited test laboratories that perform the measurements, and by national regulatory authorities that review type approval evidence.
It is relevant to engineers and quality managers in wireless audio, stage and studio equipment, tour guide systems and assistive listening products. Buyers can also use it to check whether a product has been tested against the technical and spectrum-related requirements they expect.
What changed in SIST EN 300 422-1 V1.2.2:2003 from the previous edition?
SIST EN 300 422-1 V1.2.2:2003 is an editorial modification of EN 300 422 made after the adoption of EN 300 422-2. The foreword identifies it as Part 1 of the split EN 300 422 series, with Part 2 covering the harmonized EN under article 3.2 of the R&TTE Directive.
Which standards are used with SIST EN 300 422-1 V1.2.2:2003?
- EN 300 422-2 - companion part covering the harmonized EN under article 3.2.
- ETS 300 445 - provides the EMC standard for wireless microphones and similar RF audio links.
- EN 301 357-1 - offers an alternative for some in-ear monitoring and cordless wideband audio devices with integral antennas.
- EN 300 454-1 - referenced for higher power wideband audio links.
- ITU-R BS.559-2 - defines the coloured noise used for necessary bandwidth measurement.
- IEC 60244 - supports the bandwidth measurement method with the noise filter arrangement.
- ETR 028 - gives the uncertainty method used for the measurement uncertainty clause.
- CEPT Recommendation T/R 20-06 - the base recommendation on which the standard is built.
- CEPT/ERC Recommendation 01-06 and ERC/DEC(97)10 - support mutual recognition of type testing, approval and marking.
- CEPT/ERC Recommendation 70-03 - used for regulatory marking where applicable.
What does the SIST EN 300 422-1 V1.2.2:2003 document contain?
The document contains tables for declared channel bandwidths, frequency error limits, carrier power limits, radiated spurious emission limits, receiver spurious emission limits and measurement receiver bandwidths. It also includes the spectral mask used for transmitter bandwidth testing and the uncertainty table used in test reporting.
Annex A gives outdoor and indoor radiated test arrangements, including anechoic chamber guidance and substitution-antenna methods. Annex B gives the test setup for Necessary Bandwidth (BN). Annex C provides the graphical selection rules for which equipment and frequencies to test for single-, two- and multi-frequency products.
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Frequently Asked Questions
SIST EN 300 422-1 V1.2.2:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "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". This standard covers: Editrial modifications of EN 300 422 consequent to the adoption of EN 300 422-2
Editrial modifications of EN 300 422 consequent to the adoption of EN 300 422-2
SIST EN 300 422-1 V1.2.2:2003 is classified under the following ICS (International Classification for Standards) categories: 33.060.99 - Other equipment for radiocommunications; 33.100.01 - Electromagnetic compatibility in general; 33.160.50 - Accessories. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 422-1 V1.2.2:2003 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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.:+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)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._____|||||+100-10-20-30-30-20-100dB(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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