【英文标准名称】:Fibreopticcommunicationsubsystembasictestprocedures-Part2-4:Testproceduresfordigitalsystems;bit-ratetolerancemeasurement(IEC61280-2-4:1998);GermanversionEN61280-2-4:1998
【原文标准名称】:纤维光学通信子系统基本试验程序.第2-4部分:数字系统试验程序.比特率容差测量
【标准号】:EN61280-2-4-1998
【标准状态】:现行
【国别】:
【发布日期】:1999-06
【实施或试行日期】:1999-06-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:数字的;数字信号;测量;通信系统;光波导;电气工程;试验;数字数据;公差(测量);电信;光学
【英文主题词】:Bitrate;Bitrates;Communicationsystems;Digital;Digitaldata;Digitalsignals;Electricalengineering;Measurement;Opticalwaveguides;Optics;Subsystems;Telecommunications;Testing;Tolerances(measurement)
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:33_180_01
【页数】:6P.;A4
【正文语种】:英语


【英文标准名称】:StandardPracticefortheSpecificationandEvaluationofPre-ConstructionLaboratoryMockupsofExteriorWallSystems
【原文标准名称】:外墙系统预制造实验室模型规范和评定的标准实施规程
【标准号】:ASTME2099-2000(2007)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:E06.55
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:buildings;exteriorwallsystems;laboratory;pre-construction
【摘要】:Exteriorwallsystemsrequiretimetodesign,fabricate,constructandtest.Mockupsareafullsizerepresentativeportionoftheproposedexteriorwallsystembuilttostudyproposedconstructiondetails,testforperformanceandmaybeusedtojudgeappearanceoftheexteriorwallsystem.Theprojectscheduleshallallowtimetodesign,constructandtestthepre-constructionmockupandtoimplementanydesignchanges,fabricationchanges,ormodificationsofplannedconstructionprocedures,beforeconstructionoftheexteriorwallsystemcommences.Performancetestingofpre-constructionmockupsveritiescompliancewithspecifiedstandardsanddesigncriteria.PerformancetestsinseparateASTMorotherindustrystandards,areintendedtorepresenttheeffectsofenvironmentalconditions,suchaswind,rain,andtemperatureextremes.Thetestsprovideameasureoftheperformanceoftheproposedexteriorwallsystemunderspecificandcontrolledconditions.Thespecifieddesignandspecificationofthepre-constructionmockupmustbeappropriatefortheperformancetestrequirements.Separatetestsmayberequiredforindividualmockupmaterialsorcomponents.Pre-constructionmockupspecimensrequireinputfromSpecifier,BuilderandTestAgency.Coordinationoftheireffortsfacilitatesthisprocess.Documentationshouldconveytheresultsofpreconstructionmockupsfromonepartytoothersatappropriatestagesintheprocess.Thereferencedstandardsprovidedinthispracticeidentifythehistoricalstandardstypicallyutilizedinpre-constructionperformancetesting.Thispracticeallowsforthedevelopmentanduseofotherprojectspecifictestproceduresforvariouscomponentsthatencompassexteriorwallsystems.1.1Thisstandardpracticedescribesproceduresanddocumentationtoassistinthespecificationandevaluationofpre-constructionlaboratorymockupsofexteriorwallsystems.1.2Thisstandardpracticeaddressesdesignandconstructionofthemockup;observationduringmockupconstructionandtesting;evaluationofthemockuptestresults;anddocumentationofthemockupandtestingprocess.Coordinationisrequiredbetweenthepartiesinvolvedinthedesign,constructionandtestingofthemockuptofacilitatethisprocess.Documentationshouldconveytheresultsofpre-constructionmockupsfromonepartytoothersatappropriatestagesintheprocess.1.3Thisstandardpracticerecommendstheselectionandorderofindividualtestsperformedonthemockupintheabsenceofaspecifictestorder.1.4Thisstandardpracticerecommendsaprotocolforexchangeofinformationbetweenparticipantsinthepre-constructionmockupprocess.1.5Responsibilityforspecificactivitiesisrecommendedbythisstandard.Thispracticeisintendedtoprovideadefaultstructureintheabsenceoftheassignmentofspecificresponsibilitiesbythespecifyingauthority.
【中国标准分类号】:P04
【国际标准分类号】:91_120_99
【页数】:4P.;A4
【正文语种】: