ANSI C63.12-1987 电磁兼容性限值.推荐标准
作者:标准资料网 时间:2024-05-06 00:06:15 浏览:9438
来源:标准资料网
【英文标准名称】:Electromagneticcompatibilitylimits-Recommendedpractice
【原文标准名称】:电磁兼容性限值.推荐标准
【标准号】:ANSIC63.12-1987
【标准状态】:作废
【国别】:美国
【发布日期】:1987
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:测量仪器;电磁干扰;电磁兼容性;噪声功率;定义;电磁场
【英文主题词】:noisepower;electromagneticfields;radiatedemissions;electromagneticinterferences;electromagneticcompatibility;measuringinstruments;definitions
【摘要】:
【中国标准分类号】:L06
【国际标准分类号】:19_080;29_020
【页数】:24P.;A4
【正文语种】:英语
【英文标准名称】:Fibreopticcommunicationsubsystemtestprocedures-Part4-4:Cableplantsandlinks-Polarizationmodedispersionmeasurementforinstalledlinks
【原文标准名称】:纤维光学通信子系统基本试验程序.第4-4部分:已安装链路的偏振模式色散测量
【标准号】:IEC61280-4-4-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-02
【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】:总线;电缆网络;电缆;通信系统;连接工艺;频散;电气工程;电子工程;纤维光学;玻璃纤维电缆;测量;单模纤维;光学器件;光波导;偏振;试验;波长
【英文主题词】:Bus;Cableplants;Cablednetworks;Cables;Communicationchains;Communicationsystems;Connectiontechnology;Dispersion(waves);Electricalengineering;Electronicengineering;Fibreoptics;Glassfibrecables;Measurement;Monomodefibres;Opticaldevices;Opticalwaveguides;Polarizationmodedispersion;Polarization(wavephysics);Testing;Wavelengths
【摘要】:ThispartofIEC61280providesuniformmethodsofmeasuringpolarizationmodedispersion(PMD)ofsingle-modeinstalledlinks.Aninstalledlinkistheopticalpathbetweentransmitterandreceiver,oraportionofthatopticalpath.Thesemeasurementsmaybeusedtoassessthesuitabilityofagivenlinkforhighbitrateapplicationsortoprovideinsightontherelationshipsofvariousrelatedtransmissionattributes.Theprinciplesofthisdocumentarealignedwiththoseoftheopticalfibreandopticalfibrecabletestmethod,IEC60793-1-48(seeBibliography),whichfocusesonaspectsrelatedtothemeasurementoffactorylengths.Instead,thisdocumentfocusesonthemeasurementmethodsandrequirementsformeasuringlonglengthsthatmightbeinstalled–andthatmightalsoincludeotheropticalelements,suchasamplifiers,DWDMcomponents,multiplexers,etc.PMDisastatisticalparameter.Thereproducibilityofmeasurementsdependsontheparticularmethod,butislimitedalsobythePMDlevelofthelink.Gisin[3]5)derivedatheoreticallimittothisreproducibility,byassuminganinfiniterangeofmeasuredwavelengthsandidealmeasurementconditions.NOTE1TestmethodsforfactorylengthsofopticalfibresandopticalfibrecablesaregiveninIEC60793-1-48.NOTE2TestmethodsforopticalamplifiersaregiveninIEC61290-11-1andIEC61290-11-2.NOTE3TestmethodsforpassiveopticalcomponentsaregiveninIEC61300-3-32.NOTE4GuidelinesforthecalculationofPMDforlinksthatincludecomponentssuchasdispersioncompensatorsoropticalamplifiersaregiveninIEC61282-3.WiththeexceptionofMethodD,allmethodsinthisdocumentmaybeusedtomeasurethePMDinthegainbandoflinksthatincludepumpedopticalamplifiers.Fortheselinks,amplifiedspontaneousemission(ASE)noisecangeneratedepolarizedspectralenergyintheneighbourhoodofthemeasurementwavelength.Thiswill,ingeneral,reducetheaccuracyofthemeasurement.ForMethodsA,B,C,EandF,thiseffectcanbemoderatedbyimplementinganopticalorelectricalfilteratthereceiveend.However,opticalfilteringwillnotremovetheASErightunderthesignalspectrum.Theaccuracywillthenbelimitedbyalowerdegreeofpolarization(DOP),ifthespectralwidthofthefiltercannotbesufficientlyreducedaswithabroadbandsource.LowerDOPmayrequirethesignaltobeintegratedlongertobemeaningfulortheresultwillbecometoonoisyandinterpretationwillbeerroneous.NoneofthemethodsissuitableformeasuringthePMDoflinkswithpolarizationdependentloss(PDL)inexcessof10dB.LinkswithPDLvalueslessthan1dBcanbemeasuredwithreasonableaccuracy.MeasurementaccuracymaybecompromisedbythepresenceofPDLinexcessof1dB.
【中国标准分类号】:M33
【国际标准分类号】:33_180_01
【页数】:133P.;A4
【正文语种】:英语
【英文标准名称】:FireTestsforFlame-ResistantTextilesandFilms
【原文标准名称】:耐火纺织品和薄膜的防火试验
【标准号】:ANSI/NFPA701-2004
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:防火安全;耐火性;防护服装;保护覆盖层;纺织产品
【英文主题词】:Firesafety;Flameresistance;Protectioncoverings;Protectiveclothing;Textileproducts
【摘要】:Coversfiresafetyrequirementsthatapplytoflame-resistantmaterialswhichareusedextensivelyintheinteriorfurnishingofbuildingsandtransportfacilities,inprotectiveclothingforcertainoccupationsandsituations,andforprotectiveoutdoorcoveringssuchastarpaulinsandtents.
【中国标准分类号】:C80
【国际标准分类号】:13_220_40;59_080_01
【页数】:
【正文语种】:英语
