标准名称：	化学试剂 铬酸钾
中标分类：	化工 >> 化学试剂 >> 一般无机试剂
替代情况：	改号为HG/T 3440-1976
发布日期：
实施日期：	2004-05-01
首发日期：
作废日期：
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【英文标准名称】:Maritimenavigationandradiocommunicationequipmentandsystems-Digitalinterfaces-Part420:Multipletalkersandmultiplelisteners;Shipsystemsinterconnection;Companionstandardrequirementsandbasiccompanionstandards
【原文标准名称】:海上导航和无线电通信设备及系统数字接口第420部分：多通话器和多受话器船舶系统互连围罩梯口标准要求和基本围罩梯口标准
【标准号】:IEC61162-420-2001
【标准状态】:作废
【国别】:国际
【发布日期】:2001-11
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC80
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;无线电设备;无线电导航;导航辅助设备;接口;无线电发射机;造船工程;无线电接收机;海上导航;海上无线电业务;数字信号;电气工程
【英文主题词】:Datacommunication;Definitions;Digitalsignals;Electricalengineering;Interfaces(dataprocessing);Marinenavigation;Marineradioservice;Navalengineering;Navigationalaids;Radioequipment;Radioreceivers;Radiotransmitters;Radionavigation
【摘要】:InternationalStandardIEC61162-420specifiestherequirementforandbasiccomponentsoftheIEC61162-4seriescompanionstandards.Thesecomponentsarereferredtoasfollows:a)PCS(PISCEScompanionstandards)whichcontaintherulesforcreationofcompanionstandards.ThegeneralprinciplesunderlyingthePCSaredescribedinclause4.b)PCSDL(PCSdescriptionlanguage).PartofthePCSisthedefinitionofthesyntaxforthevarioustypesofcompanionstandarddocumentsthatmakethemreadablebycomputertools.ThePCSDLisdescribedinclause5.c)functionblockdescription.ThefunctionblockdescriptionisahighlevelandgraphicaldescriptionofapplicationsusingtheIEC61162-4seriesinterfacestandard.Thefunctionblocksyntaxisspecifiedinclause7.d)PFS(PISCESfoundationspecifications)whichcontainaframeworkforclassificationofapplicationsadheringtotheIEC61162-4standard.ThePFSwillalsoprovideaminimumlevelofinteroperabilitybetweendifferentmanufacturers'applicationsusingthisframework.ThePFSisdescribedinclause6.Clause5containsthecompletereferencetothePCSdescriptionlanguage.Subclause5.2explainsthebasicconceptofthePCSwhichisgivenbythedistinctionbetweenfourtypesofspecifications:applications,interfaces,informationanddatatypes.GeneralconventionswithrespecttothesyntaxofthePCScanbefoundin5.3.AllPCSdocumentsarebasedonasimilarstructure.ThisapproachisintendedtomakeiteasiertobecomefamiliarwiththesyntaxandsemanticsofthePCSwhichisdefinedin5.3.1.ThefoursubclausesthereafterexplainindetailthesyntaxandsemanticsofthefourdifferenttypesofspecificationsgeneratedbythePCS.Clause6describestherelationshipbetweenthedifferentclassesofIEC61162-4applicationsandgivesanoverviewoftheirfunctionality.TheannexescontainthedetailedPCSdefinitionsfortheclasses.Theobjectiveofcompanionstandardsistoprovidedefinitionsoftheinformationthatistransferredwithinanintegratedshipcontrolsystemandofhowtheseinformationitemscanbeaccessedorprovided.Furthermore,thestandardshallallowthedefinitionoftheactualnetworkinterfaceswhichtheapplicationsusetoconnecttothesystem.Thedescriptionformatismachine-readable,allowinganautomaticcompilationofthedescriptionintointerfacesoftware.Acompanionstandardallowsthereaderto,atwill,shiftthefocusbetweenatechnicalspecificationandadefinitionofinterfacesandinformationitems.Thedevelopmentteamcandetermineinformationattributeslikeunit,power,accuracyandthestructureofthesystemarchitectureandcreateacommoninterpretationbasisfordatabeforethesystemimplementation.Theformalismsunderlyingthespecificationlanguagewillatthesametimeprovideanunambiguousandprecisedescriptionoftheequipmentinterfaceswhichallowtheuseofcomputertoolstoautomaticallygenerateinterfaceprogramcodesortoinspectandmanipulateinterfaceson-line,forexamplefordebuggingandmonitoringpurposes.
【中国标准分类号】:U66
【国际标准分类号】:47_020_70
【页数】:101P.;A4
【正文语种】:英语