NF C72-212-1988 照明电源.高压放电汞灯
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【英文标准名称】:Electriclightingsources.High-pressuremercuryvapourlamps.
【原文标准名称】:照明电源.高压放电汞灯
【标准号】:NFC72-212-1988
【标准状态】:作废
【国别】:法国
【发布日期】:1988-09-01
【实施或试行日期】:1988-09-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:K71
【国际标准分类号】:29_140_30
【页数】:36P;A4
【正文语种】:其他
【原文标准名称】:照明电源.高压放电汞灯
【标准号】:NFC72-212-1988
【标准状态】:作废
【国别】:法国
【发布日期】:1988-09-01
【实施或试行日期】:1988-09-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:K71
【国际标准分类号】:29_140_30
【页数】:36P;A4
【正文语种】:其他
下载地址: 点击此处下载
【英文标准名称】:Informationtechnology-FibreDistributedDataInterface(FDDI)-Part8:MediaAccessControl-2(MAC-2)
【原文标准名称】:信息技术.光纤分布式数据接口(FDDI).第8部分:媒体访问控制-2(MAC-2)
【标准号】:ISO/IEC9314-8-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-08
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:光波导;界面;数据传输;光学纤维;信息技术;网络互连;定义;数据处理;通信规程;光纤分布数据接口(FIBERDISTRIBUTEDDATAINTERFACE);信息交换;数据接口;令牌环;控制规程;接口(数据处理);多路存取计算机
【英文主题词】:
【摘要】:ThispartofISO/IEC9314specifiestheMediaAccessControl(MAC),themiddlesublayeroftheDataLinkLayer(DLL),forFibreDistributedDataInterface(FDDI).FDDI(ISO/IEC9314)providesahigh-bandwidth(100Mbit/s),general-purposeinterconnectionamonginformationprocessingsystems,subsystemsandperipheralequipment,usingfibreopticsorothertransmissionmedia.FDDIcanbeconfiguredtosupportasustaineddatatransferrateofatleast80Mbit/s(10Mbyte/s).FDDIprovidesconnectivityformanynodesdistributedoverdistancesofmanykilometresinextent.CertaindefaultparametervaluesforFDDI(e.g.timersettings)arecalculatedonthebasisofupto1000transmissionlinksorupto200kmtotalfibrepathlength(typicallycorrespondingto500nodesand100kmofdualfibrecable,respectively);however,theFDDIprotocolscansupportmuchlargernetworksbyincreasingtheseparametervalues.Asshowninfigure1,ISO/IEC9314consistsofa)APhysicalLayer(PL),whichisdividedintotwosublayers:1)APhysicalMediumDependent(PMD),whichprovidesthedigitalbasebandpoint-to-pointcommunicationbetweennodesintheFDDInetwork.ThePMDprovidesallservicesnecessarytotransportasuitablycodeddigitalbitstreamfromnodetonode.ThePMDdefinesandcharacterizesthefibre-opticdriversandreceivers,medium-dependentcoderequirements,cables,connectors,powerbudgets,opticalbypassprovisions,andphysical-hardware-relatedcharacteristics.ItspecifiesthepointofinterconnectabilityforconformingFDDIattachments.TheinitialPMDstandard,ISO/IEC9314-3,definesattachmenttomulti-modefibre.AdditionalPMDsublayerstandardsarebeingdevelopedforattachmenttosingle-modefibreandSONET.2)APhysicalLayerProtocol(PHY),whichprovidesconnectionbetweenthePMDandtheDataLinkLayer.PHYestablishesclocksynchronizationwiththeupstreamcode-bitdatastreamanddecodesthisincomingcode-bitstreamintoanequivalentsymbolstreamforusebythehigherlayers.PHYprovidesencodinganddecodingbetweendataandcontrolindicatorsymbolsandcodebits,mediumconditioningandinitializing,thesynchronizationofincomingandoutgoingcode-bitclocks,andthedelineationofoctetboundariesasrequiredforthetransmissionofinformationtoorfromhigherlayers.InformationtobetransmittedonthemediumisencodedbythePHYusingagrouptransmissioncode.b)ADataLinkLayer(DLL),whichisdividedintotwoormoresublayers:1)AnoptionalHybridRingControl(HRC),whichprovidesmultiplexingofpacketandcircuitswitcheddataonthesharedFDDImedium.HRCcomprisestwointernalcomponents,aHybridMultiplexer(H-MUX)andanisochronousMAC(I-MAC).H-MUXmaintainsasynchronous125uscyclestructureandmultiplexesthepacketandcircuitswitcheddatastreams,andI-MACprovidesaccesstocircuitswitchedchannels.2)AMediaAccessControl(MAC),whichprovidesfairanddeterministicaccesstothemedium,addressrecognition,andgenerationandverificationofframechecksequences.Itsprimaryfunctionisthedeliveryofpacketdata,includingframegeneration,repetition,andremoval.ThedefinitionofMACiscontainedinthispartofISO/IEC9314.3)AnoptionalLogicalLinkControl(LLC),whichprovidesacommonprotocolforanyrequiredpacketdataadaptationservicesbetweenMACandtheNetworkLayer.LLCisnotspecifiedbyFDDI.4)AnoptionalCircuitSwitchingMultiplexer(CS-MUX),whichprovidesacommonprotocolforanyrequiredcircuitdataadaptationservicesbetweenI-MACandtheNetworkLayer.CS-MUXisnotspecifiedbyFDDI.c)AStationManagement(SMT),whichprovidesthecontrolnecessaryatthenodeleveltomanagetheprocessesunderwayinthevariousFDDIlayerssuchthatanodemayworkcooperativelyonaring.SMTprovidesservicessuchascontrolofconfigurationmanagement,faultisolationandrecovery,andscheduling
【中国标准分类号】:M33
【国际标准分类号】:33_180_01;35_110
【页数】:98P;A4
【正文语种】:英语
【原文标准名称】:信息技术.光纤分布式数据接口(FDDI).第8部分:媒体访问控制-2(MAC-2)
【标准号】:ISO/IEC9314-8-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-08
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:光波导;界面;数据传输;光学纤维;信息技术;网络互连;定义;数据处理;通信规程;光纤分布数据接口(FIBERDISTRIBUTEDDATAINTERFACE);信息交换;数据接口;令牌环;控制规程;接口(数据处理);多路存取计算机
【英文主题词】:
【摘要】:ThispartofISO/IEC9314specifiestheMediaAccessControl(MAC),themiddlesublayeroftheDataLinkLayer(DLL),forFibreDistributedDataInterface(FDDI).FDDI(ISO/IEC9314)providesahigh-bandwidth(100Mbit/s),general-purposeinterconnectionamonginformationprocessingsystems,subsystemsandperipheralequipment,usingfibreopticsorothertransmissionmedia.FDDIcanbeconfiguredtosupportasustaineddatatransferrateofatleast80Mbit/s(10Mbyte/s).FDDIprovidesconnectivityformanynodesdistributedoverdistancesofmanykilometresinextent.CertaindefaultparametervaluesforFDDI(e.g.timersettings)arecalculatedonthebasisofupto1000transmissionlinksorupto200kmtotalfibrepathlength(typicallycorrespondingto500nodesand100kmofdualfibrecable,respectively);however,theFDDIprotocolscansupportmuchlargernetworksbyincreasingtheseparametervalues.Asshowninfigure1,ISO/IEC9314consistsofa)APhysicalLayer(PL),whichisdividedintotwosublayers:1)APhysicalMediumDependent(PMD),whichprovidesthedigitalbasebandpoint-to-pointcommunicationbetweennodesintheFDDInetwork.ThePMDprovidesallservicesnecessarytotransportasuitablycodeddigitalbitstreamfromnodetonode.ThePMDdefinesandcharacterizesthefibre-opticdriversandreceivers,medium-dependentcoderequirements,cables,connectors,powerbudgets,opticalbypassprovisions,andphysical-hardware-relatedcharacteristics.ItspecifiesthepointofinterconnectabilityforconformingFDDIattachments.TheinitialPMDstandard,ISO/IEC9314-3,definesattachmenttomulti-modefibre.AdditionalPMDsublayerstandardsarebeingdevelopedforattachmenttosingle-modefibreandSONET.2)APhysicalLayerProtocol(PHY),whichprovidesconnectionbetweenthePMDandtheDataLinkLayer.PHYestablishesclocksynchronizationwiththeupstreamcode-bitdatastreamanddecodesthisincomingcode-bitstreamintoanequivalentsymbolstreamforusebythehigherlayers.PHYprovidesencodinganddecodingbetweendataandcontrolindicatorsymbolsandcodebits,mediumconditioningandinitializing,thesynchronizationofincomingandoutgoingcode-bitclocks,andthedelineationofoctetboundariesasrequiredforthetransmissionofinformationtoorfromhigherlayers.InformationtobetransmittedonthemediumisencodedbythePHYusingagrouptransmissioncode.b)ADataLinkLayer(DLL),whichisdividedintotwoormoresublayers:1)AnoptionalHybridRingControl(HRC),whichprovidesmultiplexingofpacketandcircuitswitcheddataonthesharedFDDImedium.HRCcomprisestwointernalcomponents,aHybridMultiplexer(H-MUX)andanisochronousMAC(I-MAC).H-MUXmaintainsasynchronous125uscyclestructureandmultiplexesthepacketandcircuitswitcheddatastreams,andI-MACprovidesaccesstocircuitswitchedchannels.2)AMediaAccessControl(MAC),whichprovidesfairanddeterministicaccesstothemedium,addressrecognition,andgenerationandverificationofframechecksequences.Itsprimaryfunctionisthedeliveryofpacketdata,includingframegeneration,repetition,andremoval.ThedefinitionofMACiscontainedinthispartofISO/IEC9314.3)AnoptionalLogicalLinkControl(LLC),whichprovidesacommonprotocolforanyrequiredpacketdataadaptationservicesbetweenMACandtheNetworkLayer.LLCisnotspecifiedbyFDDI.4)AnoptionalCircuitSwitchingMultiplexer(CS-MUX),whichprovidesacommonprotocolforanyrequiredcircuitdataadaptationservicesbetweenI-MACandtheNetworkLayer.CS-MUXisnotspecifiedbyFDDI.c)AStationManagement(SMT),whichprovidesthecontrolnecessaryatthenodeleveltomanagetheprocessesunderwayinthevariousFDDIlayerssuchthatanodemayworkcooperativelyonaring.SMTprovidesservicessuchascontrolofconfigurationmanagement,faultisolationandrecovery,andscheduling
【中国标准分类号】:M33
【国际标准分类号】:33_180_01;35_110
【页数】:98P;A4
【正文语种】:英语
基本信息
| 标准名称： | 交通行业工人技术等级标准 公路运输与公路养护 汽车客运广播员 |
| 英文名称： | Technical grade standards for workers in the communications industry --Highway transportation and highway maintenance -- Automotive passenger transportation announcers |
| 中标分类： | 公路、水路运输 >> 公路运输 >> 公路运输综合 |
| 发布部门： | 中华人民共和国交通部 |
| 发布日期： | 1993-10-19 |
| 实施日期： | 1994-04-01 |
| 首发日期： | |
| 作废日期： | 2010-04-05 |
| 提出单位： | 交通部人事劳动司 |
| 归口单位： | 交通部标准计量研究所 |
| 起草单位： | 交通部人事劳动司组织河南省交通厅、浙江省交通厅、吉林省交通厅、中国汽车运输总公司、新疆维吾尔自治区交通厅、北京市交通局 |
| 起草人： | 李清、刘祥云、张洪仪 |
| 出版社： | 人民交通出版社 |
| 出版日期： | 1994-04-01 |
| 页数： | 3页 |
适用范围
本标准规定了汽车客运广播员的等级、应知、应会和工作实例。
本标准适用于汽车客运广播员的培训、考核和使用.
前言
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目录
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引用标准
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所属分类： 公路 水路运输 公路运输 公路运输综合
