1、INTERNATIONAL STANDARD IEC 610978 Firstedition 199809 Globalmaritimedistress andsafetysystem(GMDSS) Part8: Shipbornewatchkeepingreceiversfor thereceptionofdigitalselectivecalling(DSC) inthemaritimeMF,MF/HFandVHFbands Operationalandperformancerequirements, methodsoftestingandrequiredtestresults Systm
2、emondialdedtresse etdescuritenmer(SMDSM) Partie8: Rcepteursdeveilledebordpourrceptiondappelslectif numrique(ASN)danslagammedesondeshectomtriques, hectomtriquesetdcamtriques,etmtriques Exigencesoprationnellesetdefonctionnement, mthodesdessaietrsultatsexigibles Referencenumber IEC610978:1998(E)Numberi
3、ng Asfrom1January1997allIECpublicationsareissuedwithadesignationinthe 60000series. Consolidatedpublications ConsolidatedversionsofsomeIECpublicationsincludingamendmentsare available.Forexample,editionnumbers1.0,1.1and1.2refer,respectively,tothe basepublication,thebasepublicationincorporatingamendmen
4、t1andthebase publicationincorporatingamendments1and2. Validityofthispublication ThetechnicalcontentofIECpublicationsiskeptunderconstantreviewbytheIEC, thusensuringthatthecontentreflectscurrenttechnology. Informationrelatingtothedateofthereconfirmationofthepublicationisavailable intheIECcatalogue. In
5、formationonthesubjectsunderconsiderationandworkinprogressundertakenby thetechnicalcommitteewhichhaspreparedthispublication,aswellasthelistof publicationsissued,istobefoundatthefollowingIECsources: IECwebsite* CatalogueofIECpublications Publishedyearlywithregularupdates (Onlinecatalogue)* IECBulletin
6、 AvailablebothattheIECwebsite*andasaprintedperiodical Terminology,graphicalandlettersymbols Forgeneralterminology,readersarereferredtoIEC60050: InternationalElectro technicalVocabulary (IEV). Forgraphicalsymbols,andlettersymbolsandsignsapprovedbytheIECfor generaluse,readersarereferredtopublicationsI
7、EC60027: Lettersymbolstobe usedinelectricaltechnology,IEC60417:Graphicalsymbolsforuseonequipment. Index,surveyandcompilationofthesinglesheets and IEC60617: Graphicalsymbols fordiagrams. * Seewebsiteaddressontitlepage.INTERNATIONAL STANDARD IEC 610978 Firstedition 199809 Globalmaritimedistress andsaf
8、etysystem(GMDSS) Part8: Shipbornewatchkeepingreceiversfor thereceptionofdigitalselectivecalling(DSC) inthemaritimeMF,MF/HFandVHFbands Operationalandperformancerequirements, methodsoftestingandrequiredtestresults Systmemondialdedtresse etdescuritenmer(SMDSM) Partie8: Rcepteursdeveilledebordpourrcepti
9、ondappelslectif numrique(ASN)danslagammedesondeshectomtriques, hectomtriquesetdcamtriques,etmtriques Exigencesoprationnellesetdefonctionnement, mthodesdessaietrsultatsexigibles CommissionElectrotechniqueInternationale InternationalElectrotechnicalCommission PRICECODE IEC1998 Copyrightallrightsreserv
10、ed Nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicor mechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromthepublisher. InternationalElectrotechnicalCommission 3,ruedeVarembGeneva,Switzerland Telefax:+41229190300 email:inmailiec.ch IECwebsitehtt
11、p:/www.iec.ch R Forprice,seecurrentcatalogue2 610978IEC:1998(E) CONTENTS Page FOREWORD . 4 Clause 1Scope. 5 2Normative references 6 3 Definitionsandabbreviations. 6 3.1Definitions 6 3.2Abbreviations. 7 4 Generalandoperationalrequirements . 8 4.1General 8 4.2Construction 8 4.3 Controlsandindicators.
12、9 4.4Software 9 4.5Memory 10 4.6Interfaces. 10 4.7 Markingandidentification. 10 4.8Instructions 11 4.9Warmingup period 11 4.10Safety precautions. 11 4.11 Compasssafedistance 11 5Technical requirements. 12 5.1 Durabilityandresistancetoenvironmentalconditions . 12 5.2 Protectionoftheantennainputcircui
13、t. 12 5.3 Frequencybandsandchannels 12 5.4 Modeofreception 13 5.5Scanning receivers. 13 5.6Calling sensitivity. 14 5.7 Adjacentchannelselectivity 14 5.8Cochannel rejection 14 5.9Intermodulation response. 14 5.10 Interferencerejection,spuriousresponseandblockingimmunity 14 5.11Dynamic range. 15 5.12
14、Conductedspuriousemissionsintotheantenna . 15 5.13Frequency stability. 15 6 Generaltestconditions 15 6.1General 15 6.2 Testpowersource 15 6.3 Normaltestconditions 15 6.4 Extremetestconditions 16 6.5 Applicationoftestsignalstothereceiver 16 6.6 Choiceoftestingfrequencies . 17 6.7Test signals. 17 6.8
15、Measurementofbiterrorrate(BER). 17 6.9 Measurementuncertaintyandinterpretationofthemeasuringresults . 18610978IEC:1998(E) 3 Clause Page 7Environmental tests. 18 7.1Procedure 18 7.2Performance check 18 7.3Vibration tests 19 7.4Temperature tests 20 7.5Corrosion test 21 8 MF/HFwatchkeepingreceiver . 22
16、 8.1Calling sensitivity. 22 8.2 Adjacentchannelselectivity 23 8.3Cochannel rejection 23 8.4 RFintermodulationresponse 24 8.5 Spuriousresponserejection . 24 8.6Dynamic range. 25 8.7 Conductedspuriousemissionsintotheantenna . 26 8.8 Protectionofreceiverantennainputcircuits . 26 8.9Stop/start. 27 8.10
17、Stop/startofscanningefficiency. 27 9 VHFwatchkeepingreceiver . 27 9.1Calling sensitivity. 27 9.2 Adjacentchannelselectivity 28 9.3Cochannel rejection 28 9.4Intermodulation response. 29 9.5 Spuriousresponseandblockingimmunity 29 9.6Dynamic range. 30 9.7 Conductedspuriousemissionsintotheantenna . 30 1
18、0EMC . 31 11EMI . . 31 Annexes A Relationshipbetweenbiterrorrate(BER)inputandsymbolerrorrate(SER)output. 32 B UseofFSKdemodulatorsfortestingDSCwatchkeepingreceivers 36 C Bibliography. 384 610978IEC:1998(E) INTERNATIONALELECTROTECHNICALCOMMISSION _ GLOBALMARITIMEDISTRESSANDSAFETYSYSTEM(GMDSS) Part8:S
19、hipbornewatchkeepingreceiversforthereceptionof digitalselectivecalling(DSC)inthemaritimeMF, MF/HFandVHFbands Operationalandperformancerequirements,methodsof testingandrequiredtestresults FOREWORD 1) TheIEC(InternationalElectrotechnicalCommission)isaworldwideorganizationforstandardizationcomprising a
20、llnationalelectrotechnicalcommittees(IECNationalCommittees).TheobjectoftheIECistopromote internationalcooperationonallquestionsconcerningstandardizationintheelectricalandelectronicfields.To thisendandinadditiontootheractivities,theIECpublishesInternationalStandards.Theirpreparationis entrustedtotech
21、nicalcommittees;anyIECNationalCommitteeinterestedinthesubjectdealtwithmay participateinthispreparatorywork.International,governmentalandnongovernmentalorganizationsliaising withtheIECalsoparticipateinthispreparation.TheIECcollaboratescloselywiththeInternationalOrganization forStandardization(ISO)ina
22、ccordancewithconditionsdeterminedbyagreementbetweenthetwo organizations. 2) TheformaldecisionsoragreementsoftheIEContechnicalmattersexpress,asnearlyaspossible,an internationalconsensusofopinionontherelevantsubjectssinceeachtechnicalcommitteehasrepresentation fromallinterestedNationalCommittees. 3) T
23、hedocumentsproducedhavetheformofrecommendationsforinternationaluseandarepublishedintheform ofstandards,technicalreportsorguidesandtheyareacceptedbytheNationalCommitteesinthatsense. 4) Inordertopromoteinternationalunification,IECNationalCommitteesundertaketoapplyIECInternational Standardstransparentl
24、ytothemaximumextentpossibleintheirnationalandregionalstandards.Any divergencebetweentheIECStandardandthecorrespondingnationalorregionalstandardshallbeclearly indicatedinthelatter. 5) TheIECprovidesnomarkingproceduretoindicateitsapprovalandcannotberenderedresponsibleforany equipmentdeclaredtobeinconf
25、ormitywithoneofitsstandards. 6) AttentionisdrawntothepossibilitythatsomeoftheelementsofthisInternationalStandardmaybethesubject ofpatentrights.TheIECshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardIEC610978hasbeenpreparedbyIECtechnicalcommittee80: Maritimenaviga
26、tionandradiocommunicationequipmentandsystems. Thetextofthisstandardisbasedonthefollowingdocuments: FDIS Reportonvoting 80/191/FDIS 80/208/RVD Fullinformationonthevotingfortheapprovalofthisstandardcanbefoundinthereporton votingindicatedintheabovetable. AnnexesA,BandCareforinformationonly. Abilingualv
27、ersionofthisstandardmaybeissuedatalaterdate.610978IEC:1998(E) 5 GLOBALMARITIMEDISTRESSANDSAFETYSYSTEM(GMDSS) Part8:Shipbornewatchkeepingreceiversforthereceptionof digitalselectivecalling(DSC)inthemaritimeMF, MF/HFandVHFbands Operationalandperformancerequirements,methodsof testingandrequiredtestresul
28、ts 1Scope ThispartofIEC61097specifiestheminimumrequirementsforshipbornereceiversintendedto beconnectedtoanexternalinstallation,includingadecoderfordigitalselectivecalling(DSC), andusedasreceiversforwatchkeepingonDSCchannelsonboardshipsoperatinginthe maritimemobileMF,MF/HFandVHFbandsallocatedintheRad
29、ioRegulationsofthe InternationalTelecommunicationUnion(ITU)tothemaritimemobileservice,bothinconnection withdistressandsafetycommunicationandinconnectionwithgeneralcommunication. TheserequirementsincludetherelevantprovisionsoftheRadioRegulationsandrecommenda tionsITURM.489,andITURM.541,andrelevantpro
30、visionsofresolutionsA.694,A.803, A.804andA.806oftheInternationalMaritimeOrganization(IMO). Thisstandardalsospecifiestechnicalcharacteristics,methodsoftestingandrequiredtest resultsfordedicatedwatchkeepingreceiversforusewithradioinstallationsintheGMDSSas requiredbychapterIVoftheInternationalConventio
31、nforSafetyofLifeatSea(SOLAS)1974, asamended,andwithwhichIEC60945isassociated.Whenarequirementinthisstandard differsfromIEC60945,therequirementofthisstandardtakesprecedence. ThisstandardcoversreceiverswithanalogueorwithdigitalDSCsignaloutputinterfacesor withboth. DSCwatchkeepingreceiverscanbeeitherfi
32、xedfrequencyreceiversor,inMF/HFbands, scanningreceivers. TheymaybeaseparateequipmentorbeintegratedwithaDSCorradiotelephoneequipment. Forintegratedequipmentthisstandardspecifiestherequirementsandmethodsoftestingof theDSCwatchkeepingreceiversonly.TheDSCequipmentorradiotelephoneshallcomplywith therequi
33、rementsoftherelevantstandard,forexample,IEC6109733 * ,IEC6109774and IEC6109795respectively. NOTEAllrequirementsofthisstandardresultingfromtheabovereferencedIMOresolutionsorITU recommendationsareidentifiedbyquotingthenumberoftheIMOresolutionorITUrecommendationandrelevant paragraphinbracketsfollowingt
34、herequirement. _ * FiguresinsquarebracketsrefertothebibliographygiveninannexC.6 610978IEC:1998(E) 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext, constituteprovisionsofthispartofIEC61097.Atthetimeofpublication,theeditionsindicated werevalid.Alln
35、ormativedocumentsaresubjecttorevision,andpartiestoagreementsbased onthispartofIEC61097areencouragedtoinvestigatethepossibilityofapplyingthemost recenteditionsofthenormativedocumentsindicatedbelow.MembersofIECandISOmaintain registersofcurrentlyvalidInternationalStandards. IEC60417:1973, Graphicalsymb
36、olsforuseonequipmentIndex,surveyandcompilationof thesinglesheets IEC60945:1996,Maritimenavigationandradiocommunicationequipmentandsystems GeneralrequirementsMethodsoftestingandrequiredtestresults IEC611621:1995,Maritimenavigationandradiocommunicationequipmentandsystems DigitalinterfacesPart1:Singlet
37、alkerandmultiplelisteners ISO3791:1976,OfficemachinesanddataprocessingequipmentKeyboardlayoutsfor numericapplications ITURadioRegulations:1997,asrevised ITURRecommendationM.4892:1995, TechnicalcharacteristicsofVHFradiotelephone equipmentoperatinginthemaritimemobileserviceinchannelsspacedby25kHz ITUR
38、RecommendationM.4939:1997, Digitalselectivecallingsystemforuseinthemaritime mobileservice ITURRecommendationM.5418:1997, Operationalproceduresfortheuseofdigitalselective calling(DSC)equipmentinthemaritimemobileservice ITUTRecommendationE.161:1993, Arrangementofdigits,lettersandsymbolsontelephones an
39、dotherdevicesthatcanbeusedforgainingaccesstoatelephonenetwork ITURRecommendationSM.3324:1994, Selectivityofreceivers ITUTRecommendationV.11:1996, Electricalcharacteristicforbalanceddoublecurrent interchangecircuitsoperatingatsignallingratesupto10Mbit/s InternationalConventionfortheSafetyofLifeatSea(
40、SOLAS) 1974,asamended IMOResolutionA.694:1991, Generalrequirementsforshipborneradioequipmentformingpart oftheglobalmaritimedistressandsafetysystemandforelectronicnavigationalaids IMOResolutionA.803:1995,PerformancestandardsforshipborneVHFradioinstallations capableofvoicecommunicationsanddigitalselec
41、tivecalling IMOResolutionA.804:1995, PerformancestandardsforshipborneMFradioinstallations capableofvoicecommunicationsanddigitalselectivecalling IMOResolutionA.806:1995,PerformancestandardsforshipborneMF/HFradioinstallations capableofvoicecommunications,narrowbanddirectprintinganddigitalselectivecal
42、ling ETR028:1994,RadioEquipmentandSystems(RES)Uncertaintiesinthemeasurementof mobileradioequipmentcharacteristics 3 Definitionsandabbreviations 3.1Definitions Forthepurposeofthisstandard,thefollowingdefinitionsapply: 3.1.1 assignedfrequency thecentreofthefrequencybandassignedtoastation610978IEC:1998
43、(E) 7 3.1.2 continuouswatch thecapabilityofreceivingDSCcallsnotbeinginterruptedotherthanforbriefintervalswhen theshipsreceivingcapabilityisimpairedorblockedbyitsowncommunicationsorwhenthe facilitiesareunderperiodicalmaintenanceorchecks(SOLAS/IV.2.1.2) 3.1.3 F1B frequencymodulationwithdigitalinformation,withoutasubcarrierforautomaticreception 3.1.4 J2B singlesidebandwithdigitalinformation,withtheuseofamodulatingsubcarrier,withthecarri
