BS EN 61290-3-2000 光纤放大器.基本规范.噪音参数测试方法
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【英文标准名称】:Opticalfibreamplifiers-Basicspecification-Testmethodsfornoisefigureparameters
【原文标准名称】:光纤放大器.基本规范.噪音参数测试方法
【标准号】:BSEN61290-3-2000
【标准状态】:作废
【国别】:英国
【发布日期】:2000-11-15
【实施或试行日期】:2000-11-15
【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】:光学纤维;测量特征;乱真信号;准确度;放大器;信噪比;可靠度;纤维光学;电子设备及元件;光学仪器;数学计算
【英文主题词】:Amplifiers;Basicspecification;Electricalengineering;Measuringtechniques;Noisefactors;Noisefigure;Noisemeasurements;Noise(spurioussignals);Opticalfibres;Opticalwaveguides;Optics;Specification;Testing
【摘要】:TobereadinconjunctionwithBSEN61291-1:1998
【中国标准分类号】:N52
【国际标准分类号】:33_180_30
【页数】:16P;A4
【正文语种】:英语
【英文标准名称】:Paperandboard-Cut-sizeofficepaper-Measurementofcurlinapackofsheets
【原文标准名称】:纸和纸板.切裁尺寸办公用纸.一包纸卷曲的测量
【标准号】:BSISO14968-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-02-15
【实施或试行日期】:2000-02-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:分类系统;优先尺寸;纸;尺寸;书写纸;试验条件;变形;纸张规格;卷缩试验;纸板;试验设备;薄板材;抽样方法;试样制备;精密度;尺寸公差;试样;再现性
【英文主题词】:Board(paper);Curl;Curling;Definition;Definitions;Measuringtechniques;Paper;Physicaltesting;Prominences;Testprocedures;Testing
【摘要】:ThisInternationalStandardspecifiesamethodforthemeasurementofcurlincut-sizeofficepapers.ThetestmethodwouldtypicallybeusedinevaluatingpapersofthetypedescribedinISO216.Thismethodislimitedtopaperswithamaximumdimensionof300mminbothdirections.Themeasurementmaybemadeonpapersasreceived,afterconditioning,orafterprocessinginacopierorprintingdevice.
【中国标准分类号】:Y30
【国际标准分类号】:85_080_10
【页数】:16P;A4
【正文语种】:英语
【英文标准名称】:Metallicandotherinorganiccoatings-Measurementofmassperunitarea-Reviewofgravimetricandchemicalanalysismethods
【原文标准名称】:金属和其他无机覆盖层单位面积质量的测量重量分析法和化学分析方法评述
【标准号】:ISO10111-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-06
【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/TC107
【标准类型】:()
【标准水平】:()
【中文主题词】:无机物的;金属覆层;测定;金属;调查;密度测量;化学分析和试验;重量分析;定义;非金属覆层;试验;覆层
【英文主题词】:Chemicalanalysisandtesting;Coatings;Definitions;Densitymeasurement;Determination;Gravimetricanalysis;Inorganic;Metalcoatings;Metals;Methodsofanalysis;Non-metalliccoatings;Surveys;Testing
【摘要】:1GeneralThisInternationalStandardoutlinesgeneralmethodsfordeterminingtheaveragesurfacedensityoverameasuredareaofanodicoxideorofacoatingdepositedautocatalytically,mechanically,bychemicalconversion,byelectrodeposition,byhotdipgalvanizingandbyvacuumusinggravimetricandotherchemicalanalysisproceduresthathaveattainedsomedegreeofnationalorinternationalstandardization.Avarietyofproceduresaredescribedandinclude:—gravimetricproceduresforchemicalorelectrochemicaldissolutionofthecoatingorthesubstratetodeterminethecoatingsurfacedensity;—analyticalproceduresthatutilizedissolutionofthecoatingforphotometricorvolumetricdeterminationofthecoatingsurfacedensity;—non-destructiveinstrumentalphysicalanalysisofthecoatingtodeterminethesurfacedensity.WiththeexceptionofthegravimetricmethoddescribedinISO3892:—thisInternationalStandarddoesnotgivethemeasurementuncertaintiesofthemethodscited.2SourcesThestrippingmethodscitedinannexAaredescribedinspecificationsintheopenliteratureorhavebeenusedroutinelybyatleastonelaboratory.3RestrictionsTheproceduresdescribedcanbeusedformanycoating-substratecombinations.Theycannotbeusedwhereneitherthecoatingnorsubstratematerialcanbecompletelyremoved,onefromtheotherbychemicalorphysicalmeansandthereisaconstituentcommontoboththatisnotreadilyseparated(e.g.nickelphosphorusalloyonnickel).NOTEThemeasurementofverythincoatingsonverysmallpiecescanresultinareductioninaccuracyandalackofrepeatability.Severalmeasurementsusingacombinationofdifferentproceduresonsimilarsamplesmightovercomethissituation.4LimitationsInprinciple,thegravimetricprocedurescanbeusedtomeasureverythincoatingsortomeasurecoatingsoversmallareas,butnotthincoatingsoversmallareas.Thelimitsdependontherequiredaccuracy;e.g.,2,5mg/cmofcoatingmightrequire1cm,but0,1mg/cmofcoatingwouldrequire25cmtoobtain2,5mgofcoating.Theselimitationsdonotapplytothechemicalanalysismethods.Thegravimetricmethoddoesnotindicatethepresenceofbarespotsorsiteswiththicknesseslowerthanthespecifiedminimuminthemeasuringareas.Inaddition,thesinglevalueobtainedfromeachmeasuringareaisthemeanthicknessofthatarea.Therecanbenofurthermathematicalanalysisofthissinglevalue,forexample,forstatisticalprocesscontrolpurposes.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40;25_220_99
【页数】:15P.;A4
【正文语种】:英语