BS EN 61280-1-3-1999 光纤通信分系统基本试验程序.普通通信分系统试验程序.中心波长和光谱宽度测量

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【英文标准名称】:Fibreopticcommunicationsubsystembasictestprocedures-Testproceduresforgeneralcommunicationsubsystems-Centralwavelengthandspectralwidthmeasurement
【原文标准名称】:光纤通信分系统基本试验程序.普通通信分系统试验程序.中心波长和光谱宽度测量
【标准号】:BSEN61280-1-3-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-04-15
【实施或试行日期】:1999-04-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:纤维光学;纤维光学连接器;光学纤维;试样;光电子器件;光学测量;光谱学;光通信系统;纤维光缆;试验条件;性能试验;波长;波的性质和现象;波谱发射
【英文主题词】:Amplifiers;Communicationsystems;Definitions;Electricalengineering;Fibreoptics;Mean;Opticalwaveguides;Optics;Spectra;Subsystems;Telecommunications;Testing;Transmitteroutput;Wavelengths
【摘要】:Theobjectofthistestprocedureistomeasureseveralwavelengthandspectralwidthpropertiesofanopticalspectrumassociatedwithafibreopticcommunicationsubsystem.Themeasurementisdoneforthepurposeofsystemconstructionand/ormaintenance.Theopticaltransmitteristypicallyundermodulation.NOTE-Differentpropertiesmaybeappropriatetodifferentspectraltypes,suchascontinuousspectracharacteristicoflight-emittingdiodes(LEDs),andmultilongitudinalmode(MLM)spectraandsingle-longitudinalmode(SLM)spectra,bothcharacteristicoflaserdiodes(LDs).WARNING-Exercisecaretoavoidpossibleeyedamagefromlookingintotheendofanenergizedfibrefromanylightsource.Mostimportantly,personnelshouldavoidlookingintoanyenergizedfibreusinganytypeofmagnificationdevice.TherequirementsinIEC60825-1shouldbefollowed.
【中国标准分类号】:M33
【国际标准分类号】:33_180_01
【页数】:18P;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforOn-LineMeasurementofpH1
【原文标准名称】:pH1在线测量用标准试验方法
【标准号】:ASTMD6569-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D19.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:直线;测量;在线;PH;pH值测定;试验方法;测试
【英文主题词】:hydrogenion;on-line;pH;processmeasurement
【摘要】:pHisameasureofthehydrogenionactivityinwater.Itisamajorparameteraffectingthecorrosivityandscalingpropertiesofwater,biologicallifeinwaterandmanyapplicationsofchemicalprocesscontrol.Itisthereforeimportantinwaterpurification,useandwastetreatmentbeforereleasetotheenvironment.On-linepHmeasurementispreferredoverlaboratorymeasurementtoobtainrealtime,continuousvaluesforautomaticcontrolandmonitoringpurposes.1.1ThistestmethodcoversthecontinuousdeterminationofpHofwaterbyelectrometricmeasurementusingtheglass,theantimonyortheion-selectivefield-effecttransistor(ISFET)electrodeasthesensor.1.2Thistestmethoddoesnotcovermeasurementofsampleswithlessthan100S/cmconductivity.RefertoTestMethodD5128.1.3ThistestmethoddoesnotcoverlaboratoryorgrabsamplemeasurementofpH.RefertoTestMethodD1293.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:71_040_50(PHYSICOCHEMICALMETHODSOFANALYSIS)
【页数】:7P.;A4
【正文语种】:


【英文标准名称】:InternationalElectrotechnicalVocabulary.Part531:Electronictubes
【原文标准名称】:国际电工词汇第531部分:电子管
【标准号】:IEC60050-531-1974
【标准状态】:现行
【国别】:国际
【发布日期】:1974
【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/TC1
【标准类型】:()
【标准水平】:()
【中文主题词】:电子工程;定义;定义;术语;电气工程;词汇;电子管
【英文主题词】:Definitions;Electricalengineering;Electrontubes;Electronicengineering;Terminology;Vocabulary
【摘要】:Gives575termsinFrench,English,Russian,German,Spanish,Italian,Dutch,Polish,SwedishwiththeirdefinitionsinFrench,EnglishandRussiansubdividedintofollowingsections:basicterms(generaltubeclassification,emissionandspacecharge,d
【中国标准分类号】:L35;K04
【国际标准分类号】:01_040_29;01_040_31;29_020;31_100
【页数】:167P.;A4
【正文语种】:英语