ASTM D 5514-2006 土工合成织物的大规模静水压冲孔试验标准试验方法
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【英文标准名称】:StandardTestMethodforLargeScaleHydrostaticPunctureTestingofGeosynthetics
【原文标准名称】:土工合成织物的大规模静水压冲孔试验标准试验方法
【标准号】:ASTMD5514-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【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】:土工合成织物;土工织物;大型;泄漏试验;应力;试验
【英文主题词】:Geosynthetics;Geotextiles;Large;Leaktesting;Stress;Testing;Tests
【摘要】:
【中国标准分类号】:W59
【国际标准分类号】:59_080_70
【页数】:5P;A4
【正文语种】:英语
【英文标准名称】:ChecklistforDocumentationDevelopmentandRevision
【原文标准名称】:文件建立和修改的清单
【标准号】:ANSI/EIA773-2000
【标准状态】:现行
【国别】:美国
【发布日期】:2000-05-12
【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】:EIA
【标准类型】:()
【标准水平】:()
【中文主题词】:文献工作;电气工程;电子工程
【英文主题词】:electricalengineering;documentations;electronicengineering
【摘要】:Aidsinthedevelopmentand/orrevisionofEIAstandards.
【中国标准分类号】:L04
【国际标准分类号】:01_110
【页数】:
【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
