SIST EN 300 676 V1.2.1:2003
(Main)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
- 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
- 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 300 676 V1.2.1:2003 is the Slovenian adoption of ETSI EN 300 676 Version 1.2.1 for ground-based very high frequency (VHF) aeronautical radio equipment. It specifies minimum technical characteristics and methods of measurement for VHF hand-held, mobile and fixed transmitters, receivers and transceivers used in the aeronautical mobile service with amplitude modulation (AM). The standard is written for manufacturers, accredited test laboratories and civil aeronautical authorities that assess equipment for use in European air space.
What does SIST EN 300 676 V1.2.1:2003 specify?
SIST EN 300 676 V1.2.1:2003 sets the performance requirements, test conditions and measurement methods for ground-based aeronautical VHF radio equipment. It applies to Double SideBand (DSB) AM systems with 8,33 kHz or 25 kHz channel spacing, including analogue speech equipment and 25 kHz equipment intended for Aircraft Communications Addressing and Reporting System (ACARS) data communication.
The document is organized into scope, references, definitions and abbreviations, general requirements, test conditions, general measurement conditions, transmitter tests, receiver tests, measurement uncertainty, and two normative annexes.
| Annex | What it covers |
|---|---|
| Annex A | Auxiliary cables and how to arrange them during testing |
| Annex B | Specification for adjacent channel power measurement arrangements |
What are the key requirements of SIST EN 300 676 V1.2.1:2003?
The standard requires equipment to operate only in the aeronautical VHF band and on the channel structures defined by ICAO Annex 10 Volume V. For 8,33 kHz equipment, operation is tied to the assignable frequencies listed there; for 25 kHz equipment, the operating range is 118,0 MHz to 136,975 MHz. In practice, this tells the buyer or engineer which channel plan the equipment must support.
Operating behavior and user controls
The equipment must show that it is powered on, provide a way to disable squelch for testing, and indicate when the carrier is being produced. User access must not allow a control setting that could impair technical performance. This matters because the radio must stay testable and its core settings must remain protected.
Modulation and warm-up
The transmitter uses DSB AM full carrier for speech and 13k0 A2D for data. The equipment must become operational quickly after switch-on, and if parts need warming, a 30-minute warm-up period is allowed. In practice, this sets expectations for readiness in service and in type testing.
Test conditions
Measurements are made under normal conditions and, where stated, under extreme conditions. The standard defines temperature, humidity and supply-voltage ranges, and it requires vehicle equipment to meet ISO 7637 power-supply disturbance requirements. This matters because compliance is judged under realistic operating and environmental stress.
Transmitter performance
Clause 7 covers protection against antenna faults, frequency error, carrier power, modulation depth, modulation compression, distortion, audio frequency response, adjacent channel power, broadband noise, conducted spurious emissions, intermodulation attenuation, RF power attack and release time, and keying transient behavior. These tests show whether the transmitter stays on frequency, stays clean spectrally, and keys smoothly.
Receiver performance
Clause 8 covers sensitivity, harmonic distortion, audio frequency response, audio noise, effective acceptance bandwidth, adjacent channel rejection, spurious response rejection, intermodulation response rejection, blocking, conducted spurious emissions, squelch operation, cross-modulation rejection, receiver dynamic range, AF AGC, and group delay variation. These are the main checks for whether the receiver can hear wanted signals while resisting interference.
Measurement quality
Clause 9 sets maximum measurement uncertainties and explains how test results are interpreted. The laboratory must record the uncertainty alongside each measured value. That is important because the pass/fail decision depends on traceable measurements, not only on the measured number.
What terms does SIST EN 300 676 V1.2.1:2003 define?
- Conducted measurements - measurements made through a direct RF connection to the equipment under test.
- Radiated measurements - measurements made from a radiated field rather than a direct connection.
- Ground base station - aeronautical station equipment for use with an external antenna at a fixed location.
- Mobile station - radio equipment intended for permanent or temporary vehicle installation.
- Portable station - self-contained radio equipment with an integral battery for independent hand-carried use.
- Handheld - portable radio equipment designed to be operated while held in the hand.
- Integral antenna equipment - equipment with an antenna built into the unit and a 50 Ω RF test point.
- Non-integral antenna equipment - equipment with a connector intended for connection to an antenna.
Who uses SIST EN 300 676 V1.2.1:2003?
Manufacturers use this standard to design ground-based aeronautical radios and to define factory test plans. Accredited test laboratories use it to run type tests and record results for approval. Civil aeronautical authorities use it when assessing equipment for use in air space, and buyers use it to check that a radio matches the required aeronautical channel plan and test regime.
Which standards are used with SIST EN 300 676 V1.2.1:2003?
- ETSI ETR 028 - provides the approach for measurement uncertainties.
- ICAO Annex 10 Volume V - supplies the aeronautical radio frequency spectrum and assignable frequency context.
- ITU-T Recommendation P.53 - defines the psophometric filtering used for SINAD and noise-related receiver measurements.
- ISO 7637 - defines electrical disturbance requirements for equipment used in vehicles.
- The bibliography also points to ICAO Annex 10 Volume III Part 2 for voice communication systems.
What does the SIST EN 300 676 V1.2.1:2003 document contain?
The document contains detailed measurement procedures for transmitter and receiver tests, including set-ups using coaxial terminations, combining networks, spectrum analysers, modulation analysers, and network analysers. It includes tables for frequency error, carrier power tolerances, modulation response, spurious emission limits, and receiver rejection limits. Figures show the arrangements for transmitter and receiver group delay measurements, keying transient checks, and intermodulation tests. Annex B gives the characteristics of the power-measuring receiver used for adjacent channel power measurements.
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Frequently Asked Questions
SIST EN 300 676 V1.2.1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "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". This standard covers: 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.
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.
SIST EN 300 676 V1.2.1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.060.20 - Receiving and transmitting equipment; 33.100.01 - Electromagnetic compatibility in general; 49.090 - On-board equipment and instruments. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 300 676 V1.2.1:2003 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.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.:+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 300 676 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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