【英文标准名称】:Railwayrollingstock."Extremepressure"oilsformechanicaltransmissionsofmotivepowerunits.Part3:highthermalstabilityoil.Endurancetestmethodonfixedpostmachine.
【原文标准名称】:铁路车辆.原动力机械传输用耐"极端压力"油.第3部分:高热稳定性油.固定柱机械的耐久性试验
【标准号】:NFF19-809-3-1997
【标准状态】:现行
【国别】:法国
【发布日期】:1997-05-01
【实施或试行日期】:1997-05-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:S05
【国际标准分类号】:45_060_10
【页数】:11P;A4
【正文语种】:其他


【英文标准名称】:Cablenetworksfortelevisionsignals,soundsignalsandinteractiveservices-Part10:Systemperformanceforreturnpaths
【原文标准名称】:电视信号、声音信号和交互式设备用电缆网.第10部分:返回线路的系统性能
【标准号】:BSEN60728-10-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2002-04-18
【实施或试行日期】:2002-04-18
【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】:
【英文主题词】:
【摘要】:GeneralStandardsofEN50083seriesdealwithcablenetworksfortelevisionsignals,soundsignalsandinteractiveservicesincludingequipment,systemsandinstallations?forheadend-reception,processinganddistributionoftelevisionandsoundsignalsandtheirassociateddatasignals,and?forprocessing,interfacingandtransmittingallkindsofsignalsforinteractiveservicesusingallapplicabletransmissionmedia.Allkindsofnetworkslike?CATV-networks?MATV-networksandSMATV-networks?individualreceivingnetworksandallkindsofequipment,systemsandinstallationsinstalledinsuchnetworks,arewithinthisscope.Theextentofthesestandardisationworkisfromtheantennas,specialsignalsourceinputstotheheadendorotherinterfacepointstothenetworkuptothesystemoutletortheterminalinput,wherenosystemoutletexists.Thestandardisationofanyuserterminals(i.e.tuners,receivers,decoders,multimediaterminalsetc.)aswellasofanycoaxialandopticalcablesandaccessoriesthereforisexcluded.Specificscopeofthispart10Thisstandardisdealingwiththetransparentreturnpathofcablenetworksoperatedinthefrequencyrangebetween5MHzand65MHzorpartsthereof.Higherfrequenciesmaybeusedinfibrebasednetworks.NOTEInadditionitispossibletousethefrequencyrangefrom0MHzto5MHzforreturnpathtransmissions,e.g.forNMSorothercontrol,monitoringandsignallingpurposes.Applicationsbelow5MHzarenotcoveredbythisstandard.Anactivereturnpathcarriestypicallyonlyreturnsignals.Apassivereturnpathcanbeusedforbothreturnandforwardsignals.Thisstandardlaysdownthebasicmethodsofmeasurementforsignalstypicallyusedinthereturnpathofcablenetworksinordertoassesstheperformanceofthosesignalsandtheirperformancelimits.
【中国标准分类号】:M62
【国际标准分类号】:33_060_40
【页数】:34P;A4
【正文语种】:英语