BS EN 61746-2-2011 光时域反射计(OTDR)的校准.多模纤维OTDR
时间:2024-05-16 22:20:43 来源: 标准资料网 作者：标准资料网 阅读：9875
【英文标准名称】:Calibrationofopticaltime-domainreflectometers(OTDR).OTDRformultimodefibres
【原文标准名称】:光时域反射计(OTDR)的校准.多模纤维OTDR
【标准号】:BSEN61746-2-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-07-31
【实施或试行日期】:2011-07-31
【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】:
【英文主题词】:Back-scattering;Calibration;Definitions;Electricalengineering;Errorsinmeasuring;Measuringincertainity;Measuringinstruments;Measuringtechniques;Multimodefibres;Opticalequipment;Opticalinstruments;Opticalmeasurement;Opticalwaveguides;Optics;Reflectance;Reflectometer;Testing
【摘要】:ThispartofIEC61746providesproceduresforcalibratingmultimodeopticaltimedomainreflectometers(OTDR).ItcoversOTDRmeasurementerrorsanduncertainties.Thetestofthelaser(s)sourcemodalconditionisincludedasanoptionalmeasurement.ThisstandarddoesnotcovercorrectionoftheOTDRresponse.
【中国标准分类号】:N30
【国际标准分类号】:33_180_01
【页数】:50P.;A4
【正文语种】:英语
【英文标准名称】:StandardGuideforEvaluatingEffectivenessofAdmixturesforSoilStabilization
【原文标准名称】:土壤稳定用外加剂效果评定的标准指南
【标准号】:ASTMD4609-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D18.15
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:admixturescreening;Harvardapparatus;liquidlimit;moisturecontent;moisture-density;particlesize;plasticlimit;plasticityindex;soilstabilization;unconfinedcompressivestrength;volumechange;Admixtures(soil);Chemicalanalysis--soil/rock/r
【摘要】:Thisguideisintendedtoassistusersandproducersofsoilmodifiers,andstabilizersintheevaluationofaproduct''spotentialforimprovingasoil''sengineeringproperties(suchasdeformationunderload,shearstrength,andvolumestability).Theresultsofthesetestscanbeusedtomakeadecisiontocontinueexperimentationtoassesslongevity,durability,andpracticalvalue,andestablishappropriateratesofapplicationforfieldtrials.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection,andthelike.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors.PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thisguidedescribeslaboratorytechniquesforevaluatingtheeffectivenessofadmixturesforimprovingtheengineeringpropertiesoffine-grainedsoils.1.2Effectivenessisassessedbycomparingtheunconfinedcompressivestrength(UCS),moisturesusceptibility,andmoisture-densityrelationships(MD)oftreatedanduntreatedsoils.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.5Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject''smanyuniqueaspects.Thewordx201C;Standardx201D;inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:5P.;A4
【正文语种】:英语
【英文标准名称】:Photography(Films)-IndustrialRadiographicSheetandRollFilms-Dimensions
【原文标准名称】:摄影(胶片).工业用射线照相平片和胶卷的尺寸
【标准号】:ANSIPH1.15-1987
【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(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:摄影;胶卷;射线摄影胶片;尺寸
【英文主题词】:radiographicfilm;rollfilm;dimensions;photography
【摘要】:
【中国标准分类号】:G81
【国际标准分类号】:37_040_20
【页数】:6P;A4
【正文语种】:英语