IEC 61290-3-2-2008 光纤放大器.试验方法.第3-2部分:噪音图形参数.电气光谱分析法

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【英文标准名称】:Opticalamplifiers-Testmethods-Part3-2:Noisefigureparameters-Electricalspectrumanalyzermethod
【原文标准名称】:光纤放大器.试验方法.第3-2部分:噪音图形参数.电气光谱分析法
【标准号】:IEC61290-3-2-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-07
【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/SC86C
【标准类型】:()
【标准水平】:()
【中文主题词】:放大器;基本规范;电气工程;测量技术;噪声因数;噪音系数;噪声测量;乱真信号;光学纤维;光波导;光学;规范;频谱分析仪;测试
【英文主题词】:Amplifiers;Basicspecification;Electricalengineering;Measuringtechniques;Noisefactors;Noisefigure;Noisemeasurements;Noise(spurioussignals);Opticalfibres;Opticalwaveguides;Optics;Specification;Spectrumanalyzers;Testing
【摘要】:ThispartofIEC61290appliestoallcommerciallyavailableopticalamplifiers(OAs),includingOAsusingopticallypumpedfibres(OFAsbasedoneitherrare-earthdopedfibresorontheRamaneffect),semiconductoropticalamplifiers(SOAs)andplanarwaveguideopticalamplifiers(PWOAs).Theobjectofthisstandardistoestablishuniformrequirementsforaccurateandreliablemeasurements,bymeansoftheelectricalspectrumanalyzer(ESA)method,ofthenoisefigure,asdefinedinIEC61291-1.Thepresenttestmethodisbasedondirectelectricalnoisemeasurementanditisdirectlyrelatedtoitsdefinitionincludingallrelevantnoisecontributions.Therefore,thismethodcanbeusedforalltypesofopticalamplifiers,includingSOAandRamanamplifierswhichcanhavesignificantcontributionsbesidesamplifiedspontaneousemission,becauseitmeasuresthetotalnoisefigure.Forfurtherdetailsofapplicability,seeIEC61290-3.Analternativetestmethodbasedontheopticalspectrumanalyzercanbeused,particularlyfordifferentnoiseparameters(suchasthesignal-spontaneousnoisefactor)butitisnotincludedintheobjectofthisstandard.NOTE1Allnumericalvaluesfollowedby(:1:)aresuggestedvaluesforwhichthemeasurementisassured.Othervaluesmaybeacceptablebutshouldbeverified.NOTE2Ameasurementaccuracyfortheaveragenoisefactorof_+20%(:1:),respectively+1dB,shouldbeattainablewiththismethod(seeClause6).NOTE3GeneralaspectsofnoisefiguretestmethodsarereportedinIEC61290-3.
【中国标准分类号】:M33
【国际标准分类号】:33_180_30
【页数】:34P;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforEvaluatingtheResistanceoftheSurfaceofWetBluetotheGrowthofFungiinanEnvironmentalChamber
【原文标准名称】:评定湿铬鞣革表面在人工环境室中对真菌生长的耐受性的标准试验方法
【标准号】:ASTMD7584-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D31.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:basicchromiumsulfate;moldresistance;wetblue
【摘要】:Theenvironmentalchambermethodisanacceleratedtestfordeterminingtheresistanceofwetbluetothegrowthoffungi,thecausalagentofmold.SeeTestMethodD3273.,Theenvironmentalchambermethodisusefulinestimatingtheperformanceoffungicidesandshouldassistinthepredictionofstoragetimebeforefungalgrowthbegins.Theenvironmentalchambermethodduplicatesthenaturalenvironmentinwhichwetblueisinoculatedwithfungalsporesandsubsequentlydisfiguredordiscoloredbyfungi.Theenvironmentalchambermethodmeasurestheresistanceofthetreatedwetbluetothegerminationofsporesandsubsequentvegetativegrowththatspreadsoverthesurfaceofacomparativelylargewetbluespecimenoveraperiodoffourweeks.Theenvironmentalchambercanbekeptinoculatedwithfungirepresentativeofthosefoundintanneriesbyaddingsamplesofwetbluewithfungalgrowthcurrentlyoperatingtanneries.Controlspecimensofwetbluewithoutfungicidetreatmentcanbeaddedtothechamberperiodicallytoincreaselevelsoffungalgrowthinthechamber.LeachingoffungicidefromthetestspecimenintotheagaroftencausesazoneofinhibitionoffungalgrowthinthePetridishtest,butintheenvironmentalchamberanyleachingoffungicidefromthetestspecimendripsintothewatercontainedinthechamberandthusdoesnotcausethetypesoffalsereadingsobservedinthePetridishtest.1.1Thisenvironmentalchambermethodmeasurestheresistanceofthetreatedwetbluetothegerminationofsporesandsubsequentvegetativegrowthoveraperiodoffourweeks.Thetestmethodisusefulinestimatingtheperformanceoffungicidesandshouldassistinthepredictionofstoragetimeofwetbluebeforefungalgrowthbegins.Theapparatusisdesignedsoitcanbeeasilybuiltorobtainedbyanyinterestedpartyandduplicatethenaturalenvironmentinwhichwetblueisinoculatedwithfungalspores.Sporesthatgerminateonuntreatedortreatedwetbluecanproducefungalgrowth,resultingindisfigurementordiscoloration,orboth,ofthewetblue..1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Y46
【国际标准分类号】:59_140_30
【页数】:10P.;A4
【正文语种】:英语


【英文标准名称】:Informationtechnology-130mmopticaldiskcartridgesforinformationinterchange-Capacity:2,6Gbytespercartridge
【原文标准名称】:信息技术信息交换用130mm盒式光盘容量:每盒2.6GB
【标准号】:ISO/IEC14517-1996
【标准状态】:现行
【国别】:国际
【发布日期】:1996-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:物理性能;尺寸;机械性能;盒式光盘;光学特性;数据记录;磁道格式;信息交换;规范(验收);光盘;信息技术;数据处理;定义
【英文主题词】:Dataprocessing;Datarecording;Definition;Definitions;Dimensions;Informationinterchange;Informationtechnology;Mechanicalproperties;ODC;Opticaldisks;Opticalproperties;Physicalproperties;Specification(approval);Trackformats
【摘要】:Definesaseriesofrelated130mmopticaldiskcartridges(ODCs).GivestheconditionsforconformancetestingandtheReferenceDrive,mechanical,physicalanddimensionalcharacteristics,theformatoftheinformation,themagneto-opticalcharacteristicsandtheminimumqualityofuser-writtendata.
【中国标准分类号】:L64
【国际标准分类号】:35_220_30
【页数】:135P.;A4
【正文语种】:英语