SIST EN 301 688:2001

ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for fixed and portable VHF equipment operating on 121,5 MHz and 123,1 MHz

Equipment to be used for communications between ships in distress and rescuing aircraft.

Elektromagnetna združljivost (EMC) in zadeve v zvezi z radijskim spektrom (ERM) - Tehnične karakteristike in merilne metode za fiksne in prenosne radijske naprave, ki delujejo v frekvenčnih področjih 121,5 in 123,1 MHz

General Information

• Status: Published
• Publication Date: 31-Jan-2001
• ICS: 33.060.20 - Receiving and transmitting equipment
• ICS: 33.100.01 - Electromagnetic compatibility in general
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-2001
• Due Date: 01-Feb-2001
• Completion Date: 01-Feb-2001
• Ref Project: ETSI EN 301 688 V1.1.1 (2000-07) - ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for fixed and portable VHF equipment operating on 121,5 MHz and 123,1 MHz

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for fixed and portable VHF equipment operating on 121,5 MHz and 123,1 MHz33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:EN 301 688 Version 1.1.1SIST EN 301 688:2001en01-februar-2001SIST EN 301 688:2001SLOVENSKI
STANDARD



SIST EN 301 688:2001



ETSIEN301688V1.1.1(2000-07)EuropeanStandard(Telecommunicationsseries)ElectromagneticcompatibilityandRadiospectrumMatters(ERM);TechnicalcharacteristicsandmethodsofmeasurementforfixedandportableVHFequipmentoperatingon121,5MHzand123,1MHzSIST EN 301 688:2001



ETSIETSIEN301688V1.1.1(2000-07)2ReferenceDEN/ERM-RP01-031KeywordsMaritime,radio,SARETSI650RoutedesLuciolesF-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 301 688:2001



ETSIETSIEN301688V1.1.1(2000-07)3ContentsIntellectualPropertyRights.6Foreword.61Scope.72References.73Symbolsandabbreviations.73.1Symbols.73.2Abbreviations.84Generalrequirements.84.1Construction.84.2Controls.84.3Operatingfrequencies.94.4Labelling.94.5Powersource.95Testconditions,powersourcesandambienttemperatures.105.1Determinationofthelowerextremetestvoltage.105.2Normalandextremetestconditions.105.3Testpowersource.105.4Normaltestconditions.105.4.1Normaltemperatureandhumidity.105.4.2Normalpowersource.105.5Extremetestconditions.115.5.1Extremetemperatures.115.5.1.1Upperextremetemperature.115.5.1.2Lowerextremetemperature.115.5.2Extremetestpowersupplyvalues.115.5.2.1Upperextremetestvoltage.115.5.2.2Lowerextremetestvoltage.115.6Procedurefortestsatextremetemperatures.116Generalconditionsofmeasurements.126.1Testconnections.126.2Arrangementsfortestsignalsappliedtoreceiverinput.126.3Squelch.126.4Normaltestmodulation.126.5Artificialantenna.126.6Testfrequencies.126.7Measurementuncertaintyandinterpretationofthemeasuringresults.136.7.1Measurementuncertainty.136.7.2Interpretationofthemeasurementresults.137Environmentaltests.137.1Introduction.137.2Procedure.137.3Performancecheck.147.4Droptestonhardsurface.147.4.1Definition.147.4.2Methodofmeasurement.147.4.3Limit.147.5Vibrationtest.147.5.1Methodofmeasurement.147.5.2Limits.157.6Temperaturetests.157.6.1General.15SIST EN 301 688:2001



ETSIETSIEN301688V1.1.1(2000-07)47.6.2Dryheatcycle.157.6.2.1Methodofmeasurement.157.6.2.2Limits.157.6.3Dampheatcycle.157.6.3.1Methodofmeasurement.157.6.3.2Limits.167.6.4Lowtemperaturecycle.167.6.4.1Methodofmeasurement.167.6.4.2Limits.167.7Immersiontest.167.7.1Methodofmeasurement.167.7.2Requirements.168Transmitter.178.1Carrierpower.178.1.1Definition.178.1.2Methodofmeasurement.178.1.3Limit.178.2Frequencyerror.178.2.1Definition.178.2.2Methodofmeasurement.178.2.3Limit.178.3Modulationofthetransmitter.178.3.1Definition.178.3.2Methodofmeasurement.178.3.3Limit.188.4.Conductedspuriousemissionsconveyedtotheantenna.188.4.1Definition.188.4.2Methodofmeasurement.188.4.3Limit.188.5Cabinetradiation.188.5.1Definitions.188.5.2Methodofmeasurement.188.5.3Limits.199Receiver.199.1Harmonicdistortionandaudiofrequencyoutputpower.199.1.1Definition.199.1.2Methodofmeasurement.209.1.3Limit.209.2Maximumusablesensitivity.209.2.1Definition.209.2.2Methodofmeasurement.209.2.3Limit.209.3Spuriousresponserejection.209.3.1Definition.219.3.2Introductiontothemethodofmeasurement.219.3.3Methodofsearchofthelimitedfrequencyrange.219.3.4Methodofmeasurement.219.3.5Limit.229.4Conductedspuriousemissions.229.4.1Definition.229.4.2Methodofmeasurement.229.4.3Limit.22AnnexA(normative):Radiatedmeasurements.23A.1Testsitesandgeneralarrangementsformeasurementsinvolvingtheuseofradiatedfields.23A.1.1Outdoortestsite.23A.1.2Testantenna.23A.1.3Substitutionantenna.24A.1.4Optionaladditionalindoorsite.24SIST EN 301 688:2001



ETSIETSIEN301688V1.1.1(2000-07)5A.2Guidanceontheuseofradiationtestsites.25A.2.1Measuringdistance.25A.2.2Testantenna.25A.2.3Substitutionantenna.25A.2.4Artificialantenna.26A.2.5Auxiliarycables.26A.2.6Acousticmeasuringarrangement.26A.3Furtheroptionalalternativeindoortestsiteusingananechoicchamber.26A.3.1Exampleoftheconstructionofashieldedanechoicchamber.27A.3.2Influenceofparasiticreflectionsinanechoicchambers.29A.3.3Calibrationoftheshieldedanechoicchamber.29History.30SIST EN 301 688:2001



ETSIETSIEN301688V1.1.1(2000-07)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).NationaltranspositiondatesDateofadoptionofthisEN:26May2000DateoflatestannouncementofthisEN(doa):31August2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):28February2001DateofwithdrawalofanyconflictingNationalStandard(dow):28February2001SIST EN 301 688:2001



ETSIETSIEN301688V1.1.1(2000-07)71ScopeThepresentdocumentspecifiestheminimumtechnicalrequirementsformaritimetwo-wayAMVHFradiotelephoneapparatusforcommunicationsbetweenshipsindistressandrescuingaircraft.ThestandardincorporatesrelevantprovisionsoftheITURadioRegulations[1],ofIMOAssemblyResolutions[2]andofAnnex10totheICAOConvention[3].ThemaritimeVHFequipmentdescribedinthepresentdocumentisintendedforcommunicationsontheaeronauticalemergencyfrequencies121,5MHzand123,1MHzonly.Thepresentdocumentisapplicabletoportableandfixedinstalledequipment.Theintentionofthepresentdocumentistodefineequipmentthatinallrespectshavemechanicalandelectricaldesign,constructionandfinishinconformancewithgoodengineeringpracticeandthatissuitableforuseonboardshipsatseaindistresssituations.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ITURadioRegulations.[2]IMOInternationalConventionfortheSafetyOfLifeAtSea(SOLAS).[3]ICAOConventiononInternationalCivilAviation,annex10.[4]ETSIETS300225:"RadioEquipmentandSystems(RES);TechnicalcharacteristicsandmethodsofmeasurementforsurvivalcraftportableVHFradiotelephoneapparatus".[5]ISO/R694:"Positioningofmagneticcompassesinships".[6]EUROCAEED-14C:"Environmentalconditionsandtestproceduresforairborneequipment".[7]ETSIETR028:"RadioEquipmentandSystems(RES);Uncertaintiesinthemeasurementofmobileradioequipmentcharacteristics".3Symbolsandabbreviations3.1SymbolsForthepurposesofthepresentdocument,thefollowingsymbolsapply:A3EamplitudemodulationwithdoublesidebandandfullcarrierdBAacousticlevelindBrelativeto2×10-5PadBdantennagainindBrelativetodipoleradiationSIST EN 301 688:2001



ETSIETSIEN301688V1.1.1(2000-07)83.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:AMAmplitudeModulationemfelectro-motiveforceERPEffectiveRadiatedPowerEUTEquipmentUnderTestpeppeakenvelopepowerRFRadioFrequencyrmsrootmeansquareSINADSignal+Noise+Distortion/Noise+DistortionVHFVeryHighFrequency4Generalrequirements4.1ConstructionPortableequipmentshallinoneunitcompriseatleasttransmitter,receiver,antenna,battery,operatingcontrolsincludingpress-to-transmitswitch,microphoneandloudspeaker.Forportableequipment,theantennagainshallbedeclaredbythemanufacturerandshallbeatleast-12dBd.Equipmentintendedforfixedinstallationsshallhavean50ΩRFsocket.Portableequipmentshallbeofsmallsizeandlightinweight.Portableequipmentshallincludeprovisionfortheconnectionofexternalmicrophoneandheadset.TheequipmentshallhaveacolourwhichdistinguishesitfromtheportableVHFequipmentspecifiedinETS300225[4].Theequipmentshallbeoperationalwithin5secondsofswitchingon.Anypartoftheequipmentrequiredtobecheckedduringinspectionormaintenanceoperationsaslaiddownbythemanufacturer,shallbereadilyaccessible.4.2ControlsThenumberofcontrolsshallbetheminimumnecessaryforsimpleoperation.Withthepossibleexceptionofchannelselection,itshallbepossibletooperatetheequipmentusingonlyonehand.Theequipmentshallbeprovidedwithanon-offswitchandavisualindicationthattheequipmentisswitchedon.Theequipmentshallbeprovidedwithamanualvolumecontrolbywhichtheaudiooutputmaybevaried.Thepress-to-transmitswitchshallbenon-lockingandreturntostandby(receive)modewhenreleased.Thetimenecessarytochangefromtransmissiontoreception,orviceversa,shallnotexceed0,3seconds.Theequipmentshallhaveachannelselectorandshallclearlyindicatewhichfrequencytheequipmentissetto.Thechannelswitchingarrangementshallbesuchthatthetimenecessarytochangefromonefrequencytotheotherdoesnotexceed5seconds.Itshallnotbepossibletotransmitduringchannelswitchingoperations.Independentselectionoftransmittingandreceivingfrequenciesshallnotbepossible.Inthetransmissionmode,theoutputofthereceivershallbemuted.Iftheequipmentincludesatestfacility,theswitchwhichoperatesthisfacilityshallbesodesignedthatitautomaticallyreturnstonormalpositionwhenreleased.SIST EN 301 688:2001



ETSIETSIEN301688V1.1.1(2000-07)94.3OperatingfrequenciesTheequipmentshallbecapableofoperatingonthesinglefrequencychannels121,5MHzand123,1MHzonly,withmanualcontrol(simplex).TheequipmentshalloperatewithclassofemissionA3E.4.4LabellingThelabelsontheequipmentshallbepermanentlyfixedtotheexterioroftheequipment.Allcontrolsandindicatorsshallbeclearlylabelled.Thelabellingshallatleastcomprisethefollowinginformation:-textcontainingthewords:"Onlyforemergencycommunicationswithaircraft";-briefoperatinginstructions;-typedesignationoftheequipmentandserialnumber;-expirydateforanyprimarybatteries;-forportableequipment,compasssafedistance,accordingtoISORecommendation694MethodB[5]orEurocae[6].4.5PowersourceForportableequipment,thesourceofenergyshallbeaprimarybatterythatmaybereplaceablebytheuserwithouttheuseofspecialtoolsandwithoutdegradingtheperformanceoftheequipment.Inaddition,provisionsmaybemadetooperatetheequipmentusinganexternalsourceofelectricalenergy.Fixedradioinstallationshouldbepoweredfromtheship’smainsourceofelectricalenergy.Inaddition,itshouldbepossibletooperatetheinstallationfromanalternativesourceofelectricalenergy.Alternatively,thesourceofenergymaybeaprimarybatteryintegratedintheequipmentandmaybereplaceablebytheuser.Primarybatteriesshallhaveashelflifeofatleast2years.Provisionsshallbemadeforprotectingtheequipmentfromdamageduetoaccidentalreversalofthepolarityofthebatteryorofanyexternalpowersupply.Thecapacityoftheprimarybatteryshallbesufficienttooperatetheequipmentcontinuouslyforatleast10hoursatnormaltemperaturecondition(seesubclause5.4.1)withthefollowingdutycycle:-6secondstransmitwithoutmodulationfollowedby6secondsreceptionwithanRFinputsignalatthenominalfrequencyofthereceiveratalevelof+60dBµVusingnormaltestmodulation(subclause6.4)withtheaudiovolumecontrolsettogiveminimum200mWoutputpowerfollowedby48secondsreceptionwithoutinputsignalundermutedcondition(operationalsquelchcondition).SIST EN 301 688:2001



ETSIETSIEN301688V1.1.1(2000-07)105Testconditions,powersourcesandambienttemperatures5.1DeterminationofthelowerextremetestvoltageWhendeterminingthecapacityoftheprimarybattery,thebatteryvoltageshallbemeasuredattheendofadurationtest.Duringthisdurationtest,whenactivated,thetransmittershouldbemodulatedtogivemaximumoutputpower(pepat100%modulation).However,thismeasurementwouldrequireanacousticmodulationsignalandiscomplicatedtoperform.Thistestmaythereforebeperformedwithnomodulation(unmodulatedcarrier)ofthetransmitterduringtheperiodswhenthetransmitterisactivatedanditisestimatedthatan8hoursdurationtestwiththetransmittermodulatedto100%modulationdepthcorrespondstoa10hoursdurationtestwiththetransmitterkeyedwithoutmodulation.Theequipmentshallbeoperatedwiththefollowingdutycycle:-6secondstransmissionwithoutmodulationfollowedby6secondsreceptionwithanRFinputsignalatthenominalfrequencyofthereceiveratalevelof+60dBµVusingnormaltestmodulation(subclause6.4)withtheaudiovolumecontrolsettogiveminimum200mWoutputpowerfollowedby48secondsreceptionwithoutinputsignalundermutedcondition(operationalsquelchcondition).Thelowerextremetestvoltageisthevoltageofthebatteryattheendofthisdurationtestmeasuredwiththetransmitteractivated.5.2NormalandextremetestconditionsTestingoftheequipmentshallbemadeundernormaltestconditionsandalso,wherestated,underextremetestconditions.5.3TestpowersourceDuringtesting,theequipmentshallbesuppliedfromatestpowersourcecapableofproducingnormalandextremetestvoltagesasspecifiedinsubclauses5.4.2and5.5.2.Thetestspowersourceshallonlybeusedinmeasurementswhereitseffectonthetestresultsarenegligible.Thepowersourcevoltageshallbemeasuredattheinputterminalsoftheequipment.Du
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