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BS EN 50083-3-2002 电视和声信号用电缆分布系统.有源同轴电缆网络的活动宽带设备

作者:标准资料网 时间:2024-05-24 10:04:26  浏览:9745   来源:标准资料网
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【英文标准名称】:Cableddistributionsystemsfortelevisionandsoundsignals-Activewidebandequipmentforcoaxialcablenetworks
【原文标准名称】:电视和声信号用电缆分布系统.有源同轴电缆网络的活动宽带设备
【标准号】:BSEN50083-3-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2002-07-03
【实施或试行日期】:2002-07-03
【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】:电气工程;标准化组件;电视广播;测量技术;规范(验收);计量学;组件;定义;定义;电缆网;全波回路;单路连接器;数据记录;宽带网络;电缆系统;性能;规范;电缆分布系统;电缆电视系统;宽带系统;宽带放大器;声音广播;公共天线电视;同轴电缆;电缆电视;音频信号;放大器
【英文主题词】:Amplifiers;Audiosignals;Broadbandnetwork;Broadbandsystems;Cabledistributionsystems;Cablesystems;Cabletelevision;Cabletelevisionsystem;Cablednetworks;Central-antennatelevision;Coaxialcables;Components;Datarecording;Definition;Definitions;Electricalengineering;Full-wavecircuitry;Measuringtechniques;Metrology;Modularunits;Performance;Single-wayconnections;Soundbroadcasting;Specification;Specification(approval);Televisionbroadcasting;Widebandamplifiers
【摘要】:StandardsofEN50083seriesdealwithcablenetworksfortelevisionsignals,soundsignalsandinteractiveservicesincludingequipment,systemsandinstallationsforheadendreception,processinganddistributionoftelevisionandsoundsignalsandtheirassociateddatasignalsandforprocessing,interfacingandtransmittingallkindsofsignalsforinteractiveservicesusingallapplicabletransmissionmedia.AllkindsofnetworkslikeCATV-networks,MATV-networksandSMATV-networks,Individualreceivingnetworksandallkindsofequipment,systemsandinstallationsinstalledinsuchnetworks,arewithinthisscope.Theextentofthisstandardisationworkisfromtheantennas,specialsignalsourceinputstotheheadendorotherinterfacepointstothenetworkuptothesystemoutletortheterminalinput,wherenosystemoutletexists.Thestandardisationofanyuserterminals(i.e.tuners,receivers,decoders,multimediaterminalsetc.)aswellasofanycoaxialandopticalcablesandaccessoriesthereforisexcluded.Thisstandardappliestoallbroadbandamplifiersusedincablenetworks;coversthefrequencyrange5MHzto3000MHz;appliestoone-wayandtwo-wayequipment;laysdownthebasicmethodsofmeasurementoftheoperationalcharacteristicsoftheactiveequipmentinordertoassesstheperformanceofthisequipment;identifiestheperformancespecificationsthatshallbepublishedbythemanufacturers;statestheminimumperformancerequirementsofcertainparameters.Amplifiersaredividedintothefollowingtwoqualitylevels:Grade1:Amplifierstypicallyintendedtobecascaded.Grade2:Amplifiersforusetypicallywithinanapartmentblock,orwithinasingleresidence,tofeedafewoutlets.Practicalexperiencehasshownthesetypesmeetmostofthetechnicalrequirementsnecessaryforsupplyingaminimumsignalqualitytothesubscribers.Thisclassificationshallnotbeconsideredasarequirementbutastheinformationforusersandmanufacturersontheminimumqualitycriteriaofthematerialrequiredtoinstallnetworksofdifferentsizes.Thesystemoperatorhastoselectappropriatematerialtomeettheminimumsignalqualityatthesubscriber′soutlet,andtooptimisecost/performance,takingintoaccountthesizeofthenetworkandlocalcircumstances.Allrequirementsandpublisheddataareunderstoodasguaranteedvalueswithinthespecifiedfrequencyrangeandinwellmatchedconditions.
【中国标准分类号】:M60
【国际标准分类号】:33_060_40
【页数】:56P.;A4
【正文语种】:英语


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【英文标准名称】:Photography-Processingchemicals-Specificationforanhydroussodiumcarbonateandsodiumcarbonatemonohydrate
【原文标准名称】:摄影技术.洗片化学制品.无水碳酸钠和碳酸钠一水化物规范
【标准号】:BSISO424-1995
【标准状态】:现行
【国别】:英国
【发布日期】:1995-03-15
【实施或试行日期】:1995-03-15
【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】:容量分析;摄影材料;材料的物理性质;化学分析和试验;照相药品;纯度;碳酸钠
【英文主题词】:Chemicalanalysisandtesting;Chemicals;Materialsspecification;Photographicchemicals;Photography;Puritycriterion;Sodiumcarbonate;Specification(approval);Testing
【摘要】:Cancelsandreplacesthefirstedition(1976).Establishescriteriaforthepurityofphotographic-gradeanhydroussodiumcarbonateandsodiumcarbonatemonohydrateandspecifiesthetestmethodstobeusedtodeterminethepurity.
【中国标准分类号】:G84
【国际标准分类号】:37_040_30
【页数】:16P.;A4
【正文语种】:英语


【英文标准名称】:Acceptancecodeforgears-Determinationofairbornesoundpowerlevelsemittedbygearunits
【原文标准名称】:齿轮验收规程.第1部分:齿轮机构发出的气载声功率级的测定
【标准号】:BS7676-1-1993
【标准状态】:作废
【国别】:英国
【发布日期】:1993-08-15
【实施或试行日期】:1993-08-15
【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】:齿轮箱;试验条件;声强;声学测量;齿轮传动;声测量;验收(鉴定);机械传动系统;误差;数学计算;误差修正;试验设备;噪声;动力传动系统;齿轮传动机构
【英文主题词】:noise(environmental);soundlevels;acousticmeasurement;airbornesound;determination;tests;testing;acoustictesting;gearwheels
【摘要】:
【中国标准分类号】:J17
【国际标准分类号】:21_200
【页数】:24P;A4
【正文语种】:英语



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