BS ISO/IEC 10164-12-1995 信息技术.开式系统互连.系统管理.第12部分:试验管理功能
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【英文标准名称】:Informationtechnology.OpenSystemsInterconnection.SystemsManagement.Testmanagementfunction
【原文标准名称】:信息技术.开式系统互连.系统管理.第12部分:试验管理功能
【标准号】:BSISO/IEC10164-12-1995
【标准状态】:作废
【国别】:英国
【发布日期】:1995-05-15
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:数据传输;数据处理;管理;开放系统互连;信息交流;合格;应用层(开放系统互连)
【英文主题词】:dataprocessing;applicationlayer(osi);informationexchange;conformity;management;datatransmission;opensystemsinterconnection
【摘要】:
【中国标准分类号】:L79
【国际标准分类号】:35_100_70
【页数】:60P;A4
【正文语种】:英语
Product Code:SAE AMS4768
Title:Silver Alloy, Brazing Filler Metal, 35Ag - 26Cu - 21Zn - 18Cd, 1125 to 1295 掳F (607 to 702 掳C) Solidus-Liquidus Range
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification covers a silver alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, and chips and a viscous mixture (paste) of powder in a suitable binder.【英文标准名称】:Distributionautomationusingdistributionlinecarriersystems-Part5-2:Lowerlayerprofiles-FrequencyShiftKeying(FSK)profile
【原文标准名称】:采用配电线载波系统的配电自动化第5-2部分:低层文件集频移键控(FSK)文件集
【标准号】:IEC/TR261334-5-2-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-05
【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/TC57
【标准类型】:()
【标准水平】:()
【中文主题词】:传输协议;物理层;信息处理;通信系统;网络控制系统;自动化;数据传送;调频;配电线路;遥控技术;数据通信
【英文主题词】:Automation;Communicationsystems;Datacommunication;Datatransfer;Distributionlines;Frequencymodulation;Informationprocessing;Networkcontrolsystem;Physicallayers;Remotecontroltechnology;Transmissionprotocol
【摘要】:Thistechnicalreportoftype2describesalowerlayerprofilethatincludesthemediumaccesscontrol(MAC)sublayer,thephysicalsignalling(PLS)sublayerandthemainsattachmentunits(MAU),withthepurposeofgivingacontributiontobuildupasetofstandardsforeffectivecommunicationonMVandLVnetworkfordistributionlinecarrier(DLC)systems.ThisprofileusestheFSKmodulationtechniquethatofferstheadvantagesoflowcostimplementation,robustnessandimmunityagainstnoiseandinterferences.Furthermore,thetransmissionqualityispredictableknowingfewparametersofthetransmissionmedium.Usingstandardelectricalsignalinterfacetothemodem,theprofileiseffectivefordifferentmodulationtechniques.DifferenttechnicalapproachesindevelopingcommunicationforDLCsystemsareinprogress.Asaconsequence,atpresentdifferentlowlevelprofilesarefeasiblewithacceptableresultsintermsofperformanceandcost-effectiveness.Inmanycases,thedifferencesamongstsolutionsareminoranditispossibletofindacommonroot.Thisreportdescribesalowlevelprofilethatassemblessomecommonexperience.Accordingtothestructureoftheopensysteminterconnectionmodel,thelowlevelprofileshouldpresentastandardinterfacetothelogicallinkcontrol(LLC)sublayerandconsistsofsublayerssuchastheMACsublayer,PLSandMAU,thatpresentwell-definedinterfacetoeachother.TheMACsublayerheredescribedinterfacesboththeLLCconnectionless(CL)(seeIEC61334-4-32)andtheLLCconnectionoriented(CO)(seeIEC61334-4-33).TheuseoftheMACinthetwocasesisdifferentduetotheframelengthandtheframesequenceonthemedium.Toimprovetheefficiencyofthecommunication,differentclassesofservicearegiven.Theproperuseoftheclassofserviceandrelatedparametersallowuserscontrolofthetransferandwaitingtimeoftheprocessesinvolvedinthetransmission.
【中国标准分类号】:F21
【国际标准分类号】:33_040_60;35_100_05
【页数】:
【正文语种】:英语
