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GB/T 12630-1990 一般用途的薄覆钢箔环氧玻璃布层压板 (制造多层印制板用)

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基本信息
标准名称:一般用途的薄覆钢箔环氧玻璃布层压板 (制造多层印制板用)
英文名称:Thin epoxide woven glass fabric copper-clad laminated sheet, general purpose grade, for use in the fabrication of multilayer printed boards
中标分类: 电子元器件与信息技术 >> 电子元件 >> 印制电路
ICS分类: 电子学 >> 印制电路和印制电路板
发布部门:国家技术监督局
发布日期:1990-01-02
实施日期:1991-10-01
首发日期:1990-12-28
作废日期:1900-01-01
主管部门:信息产业部(电子)
归口单位:全国印制电路标准化技术委员会
起草单位:国营704厂
出版社:中国标准出版社
出版日期:1900-01-01
页数:平装16开, 页数:7, 字数:9000
适用范围

本标准规定了一般用途的薄覆铜箔环氧玻璃布层压板的技术要求。本标准适用于厚度不大于0.8mm的薄覆铜箔板(不包括铜箔)。本标准涉及的薄覆箔板主要用于制造多层印制板,也适用于制造单面或双面印制板。本标准涉及的薄覆箔板型号为CEPGC-33。

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所属分类: 电子元器件与信息技术 电子元件 印制电路 电子学 印制电路和印制电路板
【英文标准名称】:StandardTestMethodforMeasurementoftheEffectsofAutomotiveEngineOilsontheFuelEconomyofPassengerCarsandLight-DutyTrucksintheSequenceVIBSparkIgnitionEngine
【原文标准名称】:乘用车和轻型货车VIB序列火花点火发动机中汽车发动机油节油效果测量的标准试验方法
【标准号】:ASTMD6837-2004
【标准状态】:作废
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:效应;摩托车;火花点火发动机;运输车辆;燃料;轻型载重车;火花点火;引擎油;测量;汽车;轻型;乘客;顺序
【英文主题词】:measurement;sparkignitions;passengers;spark-ignitionengines;motorvehicles;transportvehicles;engineoils;light-duty;sequences;fuels;automobiles;effects;lighttrucks
【摘要】:
【中国标准分类号】:T10
【国际标准分类号】:43_060_40
【页数】:60P;A4
【正文语种】:英语


【英文标准名称】:Informationprocessingsystems-FibreDistributedDataInterface(FDDI)-Physicallayerprotocol(PHY-2)
【原文标准名称】:信息处理系统.光纤分布式数据接口(FDDI).物理层协议(PHY-2)
【标准号】:BSISO/IEC9314-7-1998
【标准状态】:现行
【国别】:英国
【发布日期】:1998-12-15
【实施或试行日期】:1998-12-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:信息交流;接口;编码(数据转换);语义学;光纤;物理层(开放系统互连);权标环网;数据链路层;纤维光缆;数据传输方法;协议;开放系统互连;数据传输;光纤分布数据接口(FIBERDISTRIBUTEDDATAINTERFACE);计算机网络;通信网;纤维光学;符号
【英文主题词】:Communicationprocedures;Controlprocedures;Datainterface;Dataprocessing;Datatransmission;Definition;Definitions;FDDI;Informationinterchange;Informationtechnology;Interfaces;Interfaces(dataprocessing);Networkinterconnection;Opticalfibres;Opticalwaveguides;Physicallayers;Protocols
【摘要】:ThispartofISO/IEC9314specifiesthePhysicalLayerProtocol(PHY),theuppersublayerofthePhysicalLayer,forFibreDistributedDataInterface(FDDI).FDDIprovidesahigh-bandwidth(100Mbit/s),general-purposeinterconnectionamonginformationprocessingsystems,subsystemsandperipheralequipment,usingfibreopticsorothertransmissionmedia.FDDIcanbeconfiguredtosupportasustaineddatatransferrateofatleast80Mbit/s(10Mbyte/s).FDDIprovidesconnectivityformanynodesdistributedoverdistancesofmanykilometersinextent.CertaindefaultparametervaluesforFDDI(e.g.timersettings)arecalculatedonthebasisofupto1000transmissionlinksorupto200kmtotalfibre-pathlength(typicallycorrespondingto500nodesand100kmofdualfibrecable,respectively);however,theFDDIprotocolscansupportmuchlargernetworksbyincreasingtheseparametervalues.Asshowninfigure1,FDDIconsistsofa)PhysicalLayer(PL),whichisdividedintotwosublayers:1)APhysicalMediumDependent(PMD),whichprovidesthedigitalbasebandpoint-to-pointcommunicationbetweennodesintheFDDInetwork.ThePMDprovidesallservicesnecessarytotransportasuitablycodeddigitalbitstreamfromnodetonode.ThePMDdefinesandcharacterizesthefibre-opticdriversandreceivers,medium-dependentcoderequirements,cables,connectors,powerbudgets,opticalbypassprovisions,andphysical-hardware-relatedcharacteristics.ItspecifiesthepointofinterconnectabilityforconformingFDDIattachments.TheinitialPMDstandarddefinesattachmenttomulti-modefibre.AlternativePMDsublayerstandardsarebeingdevelopedforattachmenttoothertransmissionmediaandformappingtoSynchronousOpticalNetwork(SONET),2)APhysicalLayerProtocol(PHY),whichprovidesconnectionbetweenthePMDandtheDataLinkLayer.PHYestablishesclocksynchronizationwiththeupstreamcode-bitdatastreamanddecodesthisincomingcode-bitstreamintoanequivalentsymbolstreamforusebythehigherlayers.PHYprovidesencodinganddecodingbetweendataandcontrolindicatorsymbolsandcodebits,mediumconditioningandinitializing,thesynchronizationofincomingandoutgoingcode-bitclocks,andthedelineationofoctetboundariesasrequiredforthetransmissionofinformationtoorfromhigherlayers.InformationtobetransmittedonthemediumisencodedbythePHYusingagrouptransmissioncode.ThedefinitionofPHYiscontainedinthispartofISO/IEC9314.b)ADataLinkLayer(DLL),whichisdividedintotwoormoresublayers:1)AnoptionalHybridRingControl(HRC),whichprovidesmultiplexingofpacketandcircuitswitcheddataonthesharedFDDImedium.HRCcomprisestwointernalcomponents,aHybridMultiplexer(H-MUX)andanIsochronousMAC(I-MAC).H-MUXmaintainsasynchronous125μscyclestructureandmultiplexesthepacketandcircuitswitcheddatastreams,andI-MACprovidesaccesstocircuitswitchedchannels,2)AMediaAccessControl(MAC),whichprovidesfairanddeterministicaccesstothemedium,addressrecognition,andgenerationandverificationofframechecksequences.Itsprimaryfunctionisthedeliveryofpacketdata,includingframegeneration,repetition,andremoval,3)AnoptionalLogicalLinkControl(LLC),whichprovidesacommonprotocolforanyrequiredpacketdataadaptationservicesbetweenMACandtheNetworkLayer.LLCisnotspecifiedbyFDDI,4)AnoptionalCircuitSwitchingMultiplexer(CS-MUX),whichprovidesacommonprotocolforanyrequiredcircuitdataadaptationservicesbetweenI-MACandtheNetworkLayer.CS-MUXisnotspecifiedbyFDDI.c)AStationManagement(SMT),whichprovidesthecoordinationnecessaryatthenodeleveltomanagetheprocessesunderwayinthevariousFDDIlayerssuchthatanodemayworkcooperativelyonaring.SMTprovidesservicessuchascontrolofconfigurationmanagement,faultisolatio
【中国标准分类号】:L65
【国际标准分类号】:33_180_01;35_110
【页数】:56P.;A4
【正文语种】:英语