SIST EN 300 676 V1.2.1:2003

• Abstract:

  International standard for ground based radio equipment used in aeronautical VHF communication systems employing double sideband amplitude modulation and 8,33 kHz channel spacing. The civil aeronautical authorities wish to apply this standard in the European air space.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.060.20 - Receiving and transmitting equipment
• ICS: 33.100.01 - Electromagnetic compatibility in general
• ICS: 49.090 - On-board equipment and instruments
• 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 300 676 V1.2.1 (2000-05) - ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Ground-based VHF hand-held, mobile and fixed radio transmitters, receivers and transceivers for the VHF aeronautical mobile service using amplitude modulation; Technical characteristics and methods of measurement

Overview

SIST EN 300 676 V1.2.1:2003 is an international standard published by the Slovenski inštitut za standardizacijo (SIST), harmonized with EN 300 676. The standard is part of the European Telecommunications Standards Institute (ETSI) series focusing on ElectroMagnetic Compatibility (EMC) and Radio Spectrum Matters (ERM) for ground-based VHF communication equipment. It defines the essential technical characteristics, performance requirements, and testing methods for VHF radio transmitters, receivers, and transceivers operating within the aeronautical mobile service, specifically using amplitude modulation (AM) and supporting 8.33 kHz or 25 kHz channel spacing.

Its main purpose is to ensure reliable and interference-free VHF communications for air traffic control and other civil aviation needs in European airspace. The standard is referenced by civil aeronautical authorities to guarantee interoperability and consistent performance of ground radio systems.

Key Topics

SIST EN 300 676 V1.2.1:2003 covers several important aspects:

• Scope of Coverage: Applies to ground-based, mobile, and hand-held VHF radio equipment for aeronautical services operating between 118 MHz and 136.975 MHz.
• Modulation and Channel Spacing: Specifies double sideband amplitude modulation (DSB-AM) for both 8.33 kHz and 25 kHz channel separation, allowing both speech and ACARS data communications.
• Minimum Technical Requirements: Addresses technical performance criteria, including frequency stability, modulation accuracy, adjacent-channel power, spurious emissions, and immunity to electromagnetic interference.
• Controls and Indicators: Mandates essential equipment controls such as clear power status, squelch override for testing, and carrier indication.
• Type Approval Testing: Describes the required test conditions, laboratory assessments, and measurement protocols to ensure compliance.
• Environmental and Operational Conditions: Details conditions for normal and extreme temperature, power source requirements, and operational readiness after power-on.
• Safety and User Control: Ensures critical parameters are protected from inadvertent changes that may compromise performance.

Applications

The practical value of SIST EN 300 676 V1.2.1:2003 is evident in several key domains:

• Air Traffic Control (ATC): Forms the backbone for reliable ground-to-air and ground-to-ground VHF voice communications between air traffic controllers and aircraft, using standardized modulation and channelization.
• Airport Ground Services: Ensures robust communication for airport operational teams, vehicle movements, and coordination with aircraft during taxiing and on-ground procedures.
• Civil Aviation Authorities: Serves as a reference for equipment certification, type approval, and ongoing compliance checks for radio systems deployed across European airports and ATC centers.
• Equipment Manufacturers: Provides vital guidance for the design, production, and testing of compliant VHF radios, ensuring market access and acceptance by regulatory bodies.
• Laboratory Testing: Establishes methods for accredited laboratories to assess the conformity of devices before market introduction.

Related Standards

For complete compliance and broader interoperability, consider the following related standards and references:

• ICAO Annex 10, Volume V: Standard and recommended practices for aeronautical radio frequency spectrum utilization.
• ETSI EN 301 489: EMC standard applicable to radio equipment.
• ITU-T Recommendation P.53: Psophometer specifications for measuring audio quality on communication circuits.
• ISO 7637: Standards for electrical disturbances in road vehicles, useful for mobile station compliance.
• SIST EN 300 676 V1.2.1:2003 is itself aligned with EN 300 676, ensuring pan-European consistency.

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Keywords: VHF aeronautical mobile service, amplitude modulation, electro-magnetic compatibility, radio spectrum, ground-based radio equipment, aviation communications, air traffic control, equipment testing, type approval, channel spacing, ACARS, ETSI, SIST, EMC compliance.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SUHMHPQLNLRGGDMQLNLElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Ground-based VHF hand-held, mobile and fixed radio transmitters, receivers and transceivers for the VHF aeronautical mobile service using amplitude modulation; Technical characteristics and methods of measurement49.090On-board equipment and instruments33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:EN 300 676 Version 1.2.1SIST EN 300 676 V1.2.1:2003en01-december-2003SIST EN 300 676 V1.2.1:2003SLOVENSKI
STANDARD
ETSIEN300676V1.2.1(2000-05)EuropeanStandard(Telecommunicationsseries)ElectromagneticcompatibilityandRadiospectrumMatters(ERM);Ground-basedVHFhand-held,mobileandfixedradiotransmitters,receiversandtransceiversfortheVHFaeronauticalmobileserviceusingamplitudemodulation;TechnicalcharacteristicsandmethodsofmeasurementSIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)2ReferenceREN/ERM-RP05-014Keywordsaeronautical,AM,DSB,radio,testing,VHFETSI650RoutedesLuciolesF-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 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)3ContentsIntellectualPropertyRights.7Foreword.7Introduction.71Scope.82References.83Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.94Generalrequirements.94.1Controlsandindicators.94.2Classofemissionandmodulationcharacteristics.104.3Warmup.105Testconditions,powersourcesandambienttemperatures.105.1Normalandextremetestconditions.105.2Testpowersource.105.3Normaltestconditions.105.3.1Normaltemperatureandhumidity.105.3.2Normalpowersources.115.3.2.1Mainsvoltageandfrequency.115.3.2.2Regulatedlead-acidbatterypowersourcesusedonvehicles.115.3.2.3Otherpowersources.115.4Extremetestconditions.115.4.1Extremetemperatures.115.4.2Extremevaluesoftestpowersources.115.4.2.1Mainsvoltage.115.4.2.2Otherpowersources.115.5Performancetest.125.6Environmentaltests.125.6.1General.125.6.2Procedurefortestsatextremetemperatures.125.6.3Temperaturetests.135.6.3.1Hightemperature.135.6.3.2Lowtemperature.136Generalconditionsofmeasurement.136.1Receivertestsignalarrangement.136.1.1Testsignalsources.136.1.2Nominalfrequency.136.1.3Normaltestsignal.136.1.4Squelch.136.1.5Normalaudiooutputpower.146.1.6AudioAGC.146.2Transmittertestsignalarrangement.146.2.1Coaxialtermination.146.2.2Signalsources.146.2.3Normaltestsignal.146.3Testchannels.147Transmitter.147.1Protectionofthetransmitter.147.1.1Definition.147.1.2Methodofmeasurement.147.1.3Requirement.15SIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)47.2Frequencyerror.157.2.1Definition.157.2.2Methodofmeasurement.157.2.3Limits.157.3Carrierpower.157.3.1Definitions.157.3.2Methodofmeasurement.157.3.3Tolerances.167.3.3.1Normaltestconditions.167.3.3.2Extremetestconditions.167.4Amplitudemodulationcharacteristic.167.4.1Modulationdepth(speech).167.4.1.1Definitions.167.4.1.2Methodofmeasurement.167.4.1.3Limits.167.4.1.4Modulationdepth(datamode).167.4.1.5Methodofmeasurement.167.4.1.6Limits.167.4.2Modulationcompression(speechmode).177.4.2.1Definition.177.4.2.2Methodofmeasurement.177.4.2.3Limits.177.4.3Amplitudemodulationdistortion.177.4.3.1Definition.177.4.3.2Methodofmeasurement.177.4.3.3Limits.177.4.4Audiofrequencyresponse.187.4.4.1Definition.187.4.4.2Methodofmeasurement.187.4.4.3Limits8,33kHzchannelspacing.187.4.4.4Limits25kHzchannelspacing.187.4.5Groupdelayvariation(datamodeonly).197.4.5.1Definition.197.4.5.2Transmittermethodofmeasurement.197.4.5.3Limits.197.5Adjacentchannelpower.207.5.1Definition.207.5.2Measurement.207.5.3Limits.207.6Broadbandnoisemeasurement.207.6.1Definition.207.6.2Methodofmeasurement.217.6.3Limit.217.7Conductedspuriousemissions.227.7.1Definition.227.7.2Methodofmeasurement.227.7.3Limits.227.8Intermodulationattenuation.237.8.1Definition.237.8.2Methodofmeasurement.237.8.3Limits.237.9RFpowerattacktimeandreleasetime.247.9.1Definitions.247.9.2Methodofmeasurement.247.9.2.1Attacktime.247.9.2.2Releasetime.257.9.3Limits.257.10KeyingTransientfrequencybehaviorofthetransmitter.257.10.1Definitions.257.10.2Methodofmeasurement.26SIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)57.10.3Limits.268Receiver.268.1Sensitivity.268.1.1Definition.268.1.2Methodofmeasurement.278.1.3Limits.278.2Harmonicdistortion.278.2.1Definition.278.2.2Methodofmeasurement.278.2.3Limits.278.3Audiofrequencyresponse.288.3.1Definition.288.3.2Methodofmeasurement.288.3.3Limits.288.3.4LimitforACARSOperation.288.4Audionoise.288.4.1Definition.288.4.2Methodofmeasurement.288.4.3Limits.288.5EffectiveAcceptanceBandwidth.298.5.1Definition.298.5.2MethodofMeasurement.298.5.3Limits.298.6Adjacentchannelrejection.298.6.1Definition.298.6.2Methodofmeasurement.298.6.3Limits.308.7Spuriousresponserejection.308.7.1Definition.308.7.2Introductiontothemethodofmeasurement.308.7.3Methodofsearchofthelimitedfrequencyrange.318.7.4Methodofmeasurement.318.7.5Limit.318.8Intermodulationresponserejection.318.8.1Definition.318.8.2Methodofmeasurement.328.8.3Limit.328.9Blockingordesensitization.328.9.1Definition.328.9.2Methodofmeasurement.338.9.3Limit.338.10Conductedspuriousemissions.338.10.1Definition.338.10.2Methodofmeasuringthepowerlevel.338.10.3Limits.348.11Squelchoperation.348.11.1Definition.348.11.2Methodofmeasurement.348.11.3Limits.358.12Crossmodulationrejection.358.12.1Definition.358.12.2Methodofmeasurement.358.12.3Limits.368.13Receiverdynamicrange.368.13.1Definition.368.13.2Methodofmeasurement.368.13.3Limit.368.14AGCattacktimeandreleasetime(datamodeonly).368.14.1Definitions.368.14.2Methodofmeasurement.36SIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)68.14.2.1Attacktime.368.14.2.2AGCDecaytime.378.14.3Limits.378.15AFAGC.378.15.1Definition.378.15.2MethodofMeasurement.378.15.3Limit.378.16Groupdelayvariation(datamodeonly).388.16.1Definition.388.16.2Receivermethodofmeasurement.388.16.3Limits.389Measurementuncertaintyandinterpretationofthemeasuredresults.399.1Maximummeasurementuncertainties.399.2Interpretationofthemeasurementresults.40AnnexA(normative):Auxiliarycables.41AnnexB(normative):Specificationforadjacentchannelpowermeasurementarrangements.42B.1Powermeasuringreceiverspecification.42B.1.1IFfilter.42B.1.2Attenuationindicator.43B.1.3RMSvalueindicator.43B.1.4Oscillatorandamplifier.43Bibliography.44History.45SIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)7IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeElectromagneticcompatibilityandRadiospectrumMatters(ERM).NationaltranspositiondatesDateofadoptionofthisEN:21April2000DateoflatestannouncementofthisEN(doa):31July2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31January2001DateofwithdrawalofanyconflictingNationalStandard(dow):31January2001IntroductionThepresentdocumentstatestheminimumperformancerequirementsforgroundbasedradiotransmitters,transceiversandreceiversfortheaeronauticalmobileserviceoperatingintheVHFband(118MHzto136,975MHz),usingDoubleSidebandAmplitudeModulationwith8,33kHzor25kHzchannelspacing.Thepresentdocumentmaybeusedbyaccreditedtestlaboratoriesfortheassessmentoftheperformanceoftheequipment.Theperformanceoftheequipmentsubmittedfortypetestingshouldberepresentativefortheperformanceofthecorrespondingproductionmodel.Thepresentdocumenthasbeenwrittenontheassumptionthat:-thetypetestmeasurementswillbeperformedonlyonce,inanaccreditedtestlaboratoryandthemeasurementsacceptedbythevariousauthoritiesinordertogranttypeapproval;-ifequipmentavailableonthemarketisrequiredtobecheckeditwillbetestedinaccordancewiththemethodsofmeasurementspecifiedinthepresentdocument.SIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)81ScopeThepresentdocumentstatestheminimumperformancerequirementsforradiotransmittersreceiversandtransceiversatground-basedaeronauticalstationsoperatingintheVHFband(118MHzto136,975MHz)allocatedtotheaeronauticalmobileservice.ThepresentdocumentappliestoDSBAMsystems,withchannelseparationsof8,33kHzor25kHzintendedforanaloguespeechandgroundbasestationswithachannelspacingof25kHzintendedforACARSdatacommunication.Thescopeofthepresentdocumentislimitedtogroundbasestations,groundmobileandhandheldradiosforgrounduse.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ETSIETR028:"RadioEquipmentandSystems(RES);Uncertaintiesinthemeasurementofmobileradioequipmentcharacteristics".[2]ICAOAnnex10VolumeV(1996):"AeronauticalRadioFrequencySpectrumUtilization".[3]ITU-TRecommendationP.53:"Psophometerforuseontelephone-typecircuits".[4]ISO7637Roadvehicles,Electricaldisturbancebyconductingandcoupling(Parts1&2).3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:Typesofmeasurements:conductedmeasurements:measurementswhicharemadeusingadirectRFconnectiontotheequipmentundertestradiatedmeasurements:measurementswhichinvolvethemeasurementofaradiatedfieldaeronauticalmobileservice:mobileservicebetweenaeronauticalstationsandaircraftstations,orbetweenaircraftstations,inwhichsurvivalcraftstationsmayparticipateTypeofstation:groundbasestation:aeronauticalstationequipment,intheaeronauticalmobileservice,forusewithanexternalantennaandintendedforuseatafixedlocationmobilestation:radioequipmentdesignedforpermanentortemporaryvehicleinstallationandoperation,includingprovisionforvehicleDCpowersupply,andconnectionsforexternalantenna,PTTkey,microphone,speakerand/orheadphoneSIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)9portablestation:radioequipmentwithintegralbatteryforindependenthand-carrieduse.Provisionsmaybemadeforconnectionsofanexternalantenna,PTTkey,microphone,headphoneandcharger,butprincipallytobeoperatedasaselfcontainedunithandheld:radioequipmentwithintegralbatteries,designedtobehandportableandoperatedhandheldintegralantennaequipment:radiocommunicationsequipmentwithanantennaintegratedintotheequipmentwithouttheuseofanexternalconnectorandconsideredtobepartoftheequipment.Anintegralantennamaybeinternalorexternaltotheequipment.Inequipmentofthistype,a50ΩRFconnectionpointshallbeprovidedfortestpurposes.AconnectionpointforanAFmodulatinginputandforAFoutputmeasurementsshallalsobeprovidednon-integralantennaequipment:radiocommunicationsequipmentwithaconnectorintendedforconnectiontoanantenna3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ACARSAircraftCommunicationsAddressingandReportingSystemAFAudioFrequencyAGCAutomaticGainControlAMAmplitudeModulationdBcdBrelativetothecarrierpowerDSBDoubleSideBandI/PInputICAOInternationalCivilAviationOrganizationIFIntermediateFrequencyO/POutputppmpartspermillionRFRadioFrequencyrmsrootmeansquareSINAD(Signal+Noise+Distortion)/(Noise+Distortion)VSWRVoltageStandingWaveRatio4Generalrequirements8,33kHzequipmentshallbeabletooperateonallchannelsintheListofAssignableFrequenciesdefinedinAppendix2,chapter4,GroupF(subclause4.1.8.1.2)oftheICAOAnnex10VolumeV[2].Thechannellabellingusedfor8,33kHzchannelspacingisbasedonafrequency-channelpairinginaccordancewithtable4.1(bis)ofICAOAnnex10VolumeV[2]subclause4.1.2.4.25kHzequipmentshallbeabletooperateonthefrequencies118,0MHzto136,975MHzinaccordancewithICAOAnnex10VolumeV[2],AppendixtoChapter4.Itshallnotbepossibletotransmitwhileanyfrequencysynthesizerusedwithinthetransmitterisoutoflock.Itshallnotbepossibletotransmitduringchannelswitchingoperations.4.1ControlsandindicatorsTheequipmentshallhavethefollowingcontrolsandindicatorsasaminimum:-avisualindicationthatthedeviceisswitchedon;-afacilitytodisablethesquelchfortestpurposes;-avisualindicationthatthecarrierisbeingproduced.SIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)10Theequipmentshallalsomeetthefollowingrequirements:-theusershallnothaveaccesstoanycontrolwhich,ifwronglyset,mightimpairthetechnicalcharacteristicsoftheequipment.4.2ClassofemissionandmodulationcharacteristicsTheequipmentshalluseDoubleSideBand(DSB)AmplitudeModulation(AM)fullcarrier,(6K80A3EJNfor25kHz,5K00A3EJNfor8,33kHz),forspeechand13k0A2Dfordata.Theequipmentshallbedesignedtooperatesatisfactorilywithachannelseparationof8,33kHzor25kHz.4.3WarmupAfterbeingswitchedontheequipmentshallbeoperationalwithinfiveseconds(tensecondsforhandheldradios)andshallmeettherequirementsofthepresentdocumentwithinoneminuteundernormaltestconditions(subclause5.3).Iftheequipmentincludespartswhichrequiretobeheatedinordertooperatecorrectly(e.g.crystalovens)awarming-upperiodof30minutesofthosepartsshallbeallowed.5Testconditions,powersourcesandambienttemperatures5.1NormalandextremetestconditionsMeasurementsshallbemadeundernormaltestconditions(subclause5.3)andalso,wherestated,underextremetestconditions(subclauses5.4.1and5.4.2appliedsimultaneously).5.2TestpowersourceDuringtesting,theequipmentshallbesuppliedfromatestpowersourcecapableofproducingnormalandextremetestvoltages.Theinternalimpedanceofthetestpowersourceshallbelowenoughforitseffectonthetestresultstobenegligible.Forthepurposeoftestingthepowersourcevoltageshallbemeasuredattheinputterminalsoftheequipment.Duringtesting,thepowersourcevoltagesshallbemaintainedwithinatoleranceof±3%relativetothevoltagelevelatthebeginningofeachtest.5.3Normaltestconditions5.3.1NormaltemperatureandhumidityThenormaltemperatureandhumidityconditionsfortestsshallbeacombinationoftemperatureandhumiditywithinthefollowingranges:-temperature:+15°Cto+35°C;-relativehumidity:20%to75%.Whenitisimpracticabletocarryoutthetestsundertheseconditions,anotetothiseffect,statingtheambienttemperatureandrelativehumidityduringthetests,shallbeaddedtothetestreport.SIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)115.3.2Normalpowersources5.3.2.1MainsvoltageandfrequencyThenormaltestvoltageforequipmenttobeconnectedtothemainsshallbethenominalmainsvoltage.Forthepurposeofthepresentdocument,thenominalvoltageshallbethedeclaredvoltageoranyofthedeclaredvoltagesforwhichtheequipmentwasdesigned.ThefrequencyofthetestpowersourcecorrespondingtotheACmainsshallbebetween49Hzand51Hz.5.3.2.2Regulatedlead-acidbatterypowersourcesusedonvehiclesWhentheradioequipmentisintendedforoperationfromtheusualtypesofregulatedlead-acidbatterypowersourceusedonvehicles,thenormaltestvoltageshallbe1,1timesthenominalvoltageofthebattery(6V,12Vetc.).5.3.2.3OtherpowersourcesForoperationfromotherpowersourcesortypesofbattery(primaryorsecondary),thenormaltestvoltageshallbethatdeclaredbytheequipmentmanufacturer.5.4Extremetestconditions5.4.1ExtremetemperaturesFortestsatextremetemperatures,measurementsshallbemadeinaccordancewithsubclause5.5,atalowertemperatureof-20°Candanuppertemperatureof+55°C.Thistestshallbeperformedatthenominalsupplyvoltageasdefinedinsubclause5.3.25.4.2Extremevaluesoftestpowersources5.4.2.1MainsvoltageTheextremetestvoltagesshallbebetween207Vand253V.Thistestshallbeperformedatthenormaltemperatureandhumidityasdefinedinsubclause5.3.1.Thefrequencyofthetestvoltageshallbebetween49Hzand51Hz.5.4.2.2OtherpowersourcesForequipmentusingotherpowersources,orcapableofbeingoperatedfromavarietyofpowersources,theextremetestvoltagesshallbethoseagreedbetweentheequipmentmanufacturerandthetestinglaboratoryandshallberecordedinthetestreport.EquipmentintendedforvehicleinstallationshallmeetthepowersupplyrequirementsofISO7637[4].SIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)125.5PerformancetestForthepurposesofthepresentdocument,theterm"performancetest"shallbetakentomeanthefollowingmeasurementsandlimits:-forthetransmitter:-frequencyerror:withthetransmitterconnectedtoacoaxialtermination(subclause6.2.1),thefrequencyerrorshallbeasinsubclause7.2;-carrierpower:withthetransmitterconnectedtoacoaxialtermination(subclause6.2.1),thetransmittershallbekeyedwithoutmodulationandtheoutputpowershallbeasdefinedinsubclause7.3;-modulation:withthetransmitterconnectedtoacoaxialtermination(subclause6.2.1),thetransmittershallbekeyed.Themodulationdistortionshallbeasinsubclause7.4.3;-forthereceiver:-sensitivity:withtheAGCoperative,anormaltestsignal(subclause6.1.3)shallbeappliedtothereceiver.Thesensitivityshallbeasdefinedinsubclause8.1.5.6Environmentaltests5.6.1GeneralEnvironmentaltestsshallfollowcheckingtheprotectionofthetransmitter(subclause7.1)whichfollowsthefirstapplicationofthePerformancetest(subclause5.5).5.6.2ProcedurefortestsatextremetemperaturesBeforetestsattheupperextremetemperature,theequipmentshallbeplacedinthetestchamberandleftuntilthermalbalanceisattained.Theequipmentshallthenbeswitchedonfor30minutes.Thetransmittershallthenbekeyedfor1minuteinthetransmitcondition,afterwhichtheequipmentshallmeetthespecifiedrequirements.Transmittersshallbeoperatedinthehighestratedpowertransmitcondition.Fortestsatthelowerextremetemperature,theequipmentshallbeleftinthetestchamberuntilthermalbalanceisattained,thenswitchedtothestandbyorreceiveconditionfor1minuteafterwhichtheequipmentshallmeetthespecifiedrequirements.NOTE:Itisassumedthatequipmentintendedforoff-setcarrieroperationwillbeinstalledinabuildingwithfacilitiessuitabletoprovideprotectionfromtemperatureextremes,thereforeextremetemperaturetestsneednotbeappliedtosuchequipment.SIST EN 300 676 V1.2.1:2003

ETSIETSIEN300676V1.2.1(2000-05)135.6.3Temperaturetests5.6.3.1Hightemperature-Placetheequipmentinachamberandheatto55ºC(±3ºC)andallowtostabilizefor1hour.-Switchontheequipment.-After30minutescarryouttheperformancetestasdetailedinsubclause5.5.-Switchofftheequipmentandallowthechambertocooltoroomtemperatu
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