【英文标准名称】:Fibreopticcommunicationsystemdesignguides-Part1:Single-modedigitalandanaloguesystems
【原文标准名称】:纤维光学通信系统的设计指南第1部分:单模数字系统和模拟系统
【标准号】:IEC/TR61282-1-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-02
【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】:数字信号;模拟信号;设计;电信;光波导
【英文主题词】:analoguesignals;opticalwaveguides;design;digitalsignals;telecommunications
【摘要】:Thistechnicalreportprovidessystemdesignmethodologyguidancetousersandsuppliersoffibreoptictransmissionsystemsfortelecommunicationsandbroadbandvideodistributionapplications.Thefunctionofthefibreopticsystemsconsideredinthistechnicalreportistointerconnectsignalsbetweendefineddigitalandanalogueinterfacesviaafibreopticlink.Ingeneral,fibreopticsystemsarebuilt-upfrombasicfibreopticsystems(BFOS).Asaresult,itisnecessarytoconsideronlytheBFOS,whichtransmitsasingleelectricalsignalbetweentwopointswithoutintermediateregeneration.Thus,theseguidelinesareapplicabletoalmostalldesigncases.Asaninitialstep,onlylasersystemsusingdirectdetectingtechnologiesinthe1310and/or1550nmregionsoverB1andB2typesofunshiftedanddispersionshiftedsingle-modefibresareconsidered.Forsystemsusinglongitudinalmulti-modelasersaboveapproximately0,5Gb/s,thecalculateddispersionlimitedlengthsmaybeconservativelylow.Bidirectionalsystems,inwhichbothdirectionsoftransmissionuseacommonfibre,andunidirectionalsystemsarecoveredinthistechnicalreport.Intheclauseswhichfollow,thetransmissiondesignparametersarespecifiedbytheirworst-casevalues.Itistheoptionoftheusertorequirethatsuppliersguaranteetheworst-casevaluesoverthelifetimeoftheirrespectivesystemcomponents.Someusersorsystemdesignersmaydesiretoperformanalysisanddesigncalculationsviaastatisticalapproachandtorequeststatisticalvaluesoftheparameters.ThestatisticalapproachiscoveredinannexA.Thedeterminationoftheworst-casedispersioncoefficientiscoveredinannexB.Someexamplesarepresentedtoclarifyconceptsandtoillustrateorderofmagnitude.Thenumberspresentedintheseexamplesareillustrativeonlyandshouldnotbeconsideredasrequirementsforsystemdesignorperformance.
【中国标准分类号】:M33
【国际标准分类号】:33_180_01
【页数】:32P.;A4
【正文语种】:英语


【英文标准名称】:Surfacesforsportsareas-Procedureforacceleratedageingbyexposuretohotair;GermanversionEN13817:2004
【原文标准名称】:运动场表面.在热空气中加速老化规程
【标准号】:EN13817-2004
【标准状态】:现行
【国别】:
【发布日期】:2005-01
【实施或试行日期】:
【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】:运动场;热空气;老化稳定性;热应力;地板覆盖物;热稳定性;物理性能;体育活动用地板;建筑;温度;运动设施;试验;实验室试验;老化试验
【英文主题词】:Ageingstability;Ageingtests;Construction;Floorcoverings;Floorforsportingactivities;Hotair;Laboratorytesting;Physicalproperties;Sportsareas;Sportsfacilities;Temperature;Testing;Thermalstability;Thermalstress
【摘要】:
【中国标准分类号】:Y55
【国际标准分类号】:97_150;97_220_10
【页数】:7P.;A4
【正文语种】:英语