【英文标准名称】:Opticalfibres-Part1-41:Measurementmethodsandtestprocedures-Bandwidth
【原文标准名称】:光纤.第1-41部分:测量方法和试验规程.频带宽度
【标准号】:IEC60793-1-41-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-08
【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/SC86A
【标准类型】:()
【标准水平】:()
【中文主题词】:频带宽度;定义;尺寸规格;电气工程;光纤;频率;频率范围;测量;测量技术;动量;多模纤维;光学测量;光波导;特性;脉冲失真;抽样方法;试验;试验装置
【英文主题词】:Bandwidths;Definitions;Dimensions;Electricalengineering;Fibreoptics;Frequencies;Frequencyranges;Measurement;Measuringtechniques;Momentum;Multimodefibres;Opticalmeasurement;Opticalwaveguides;Properties;Pulsedistortion;Samplingmethods;Testing;Testingdevices
【摘要】:ThispartofIEC60793describesthreemethodsfordeterminingandmeasuringthemodalbandwidthofmultimodeopticalfibres(seeIEC60793-2-10,IEC60793-30seriesandIEC60793-40series).Thebasebandfrequencyresponseisdirectlymeasuredinthefrequencydomainbydeterminingthefibreresponsetoasinusoidalymodulatedlightsource.Thebasebandresponsecanalsobemeasuredbyobservingthebroadeningofanarrowpulseoflight.Thecalculatedresponseisdeterminedusingdifferentialmodedelay(DMD)data.Thethreemethodsare:?MethodA–Timedomain(pulsedistortion)measurement?MethodB–Frequency-domainmeasurement?MethodC–Overfilledlaunchmodalbandwidthcalculatedfromdifferentialmodedelay(OMBc)MethodsAandBcanbeperformedusingoneoftwolaunches:anoverfilledlaunch(OFL)conditionorarestrictedmodelaunch(RML)condition.MethodCisonlydefinedforA1a.2(andA1a.3inpreparation)multimodefibreandusesaweightedsummationofDMDlaunchresponseswiththeweightscorrespondingtoanoverfilledlaunchcondition.Therelevanttestmethodandlaunchconditionshouldbechosenaccordingtothetypeoffibre.
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:64P.;A4
【正文语种】:英语


【英文标准名称】:ElectromagneticcompatibilityandRadiospectrumMatters(ERM)-Landmobileservice;Radioequipmentintendedforthetransmissionofdata(andspeech)andusinganintegralantenna-Part2:HarmonizedENcoveringessentialrequirementsunderarticle3.2
【原文标准名称】:电磁兼容性和无线电频谱事宜(ERM).地面流动服务设施.使用整体天线和数据(和语音)传输用无线电设备.第2部分:包括R&TTE指令3.2条款中基本要求的协调欧洲标准
【标准号】:EN300390-2-2000
【标准状态】:现行
【国别】:
【发布日期】:2001-03
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:天线;数据传送;定义;电气工程;指南;地面流动服务设施;语言;无线电工程;接收机;接收台;规范(验收);远程通信;电信;传输技术;无线通信业务
【英文主题词】:Antennas;Datatransfer;Definition;Definitions;Electricalengineering;Guidelines;Land-mobileservices;Languages;Radioengineering;Receiver;Receivingstation;Specification(approval);Telecommunication;Telecommunications;Transmissiontechnique;Wirelesscommunicationservices
【摘要】:
【中国标准分类号】:L06
【国际标准分类号】:33_060_99;33_100_01
【页数】:1P.;A4
【正文语种】:英语