【英文标准名称】:Cablenetworksfortelevisionsignals,soundsignalsandinteractiveservices-Part4:Passivewidebandequipmentforcoaxialcablenetworks
【原文标准名称】:电视信号、声音信号和交互式设备用电缆网.同轴电缆网用无源多频率设备
【标准号】:BSEN60728-4-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-06-30
【实施或试行日期】:2008-06-30
【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】:音频信号;分支缆管道;宽带;宽带系统;电缆分布系统;电缆电视;电缆网;公共天线电视;同轴电缆;通信链;连接电缆;接线箱;连接件;数据记录;退耦;分配器;电气工程;频率范围;等级(质量);交互式的;测量技术;计量学;标准化组件;接收机;回程损耗;信号;声音广播;规范(验收);用户台;电视广播;电视接收;终端装置;电视信号;宽频带传输
【英文主题词】:Audiosignals;Branchconduits;Broadband;Broadbandsystems;Cabledistributionsystems;Cabletelevision;Cablednetworks;Central-antennatelevision;Coaxialcables;Communicationchains;Connectingcables;Connectionboxes;Connections;Datarecording;Decoupling;Distributors;Electricalengineering;Frequencyranges;Grades(quality);Interactive;Measuringtechniques;Metrology;Modularunits;Receivers;Returnloss;Signals;Soundbroadcasting;Specification(approval);Subscriber'sstation;Televisionbroadcasting;Televisionreception;Terminaldevices;Visionsignals;Widebandtransmission
【摘要】:ThispartofIEC60728appliestosystemoutlets,splittersandtaps,passivesingleormultipleportequipmentcomprisingfilters,attenuators,equalizers,galvanicisolators,powerinjectors,cablesplices,terminatingresistorsandtransferpoints,butexcludingcoaxialcablesandreceiverleads(see5.2).Thisstandard?coversthefrequencyrange5MHzto3000MHz;?identifiesperformancerequirementsforcertainparameters;?laysdowndatapublicationrequirementsforcertainparameters;?stipulatesmethodsofmeasurements;?introducesminimumrequirementsdefiningqualitygrades.Therearethreegradesforallpassiveequipmentexceptsystemoutletswherethereisonlyone.Differentnetworksrequirethesameperformanceand,whenintegratingnetworks,upgradingwillbeavoided.Practicalexperiencehasshownthatthesethreegradesmeetmostofthetechnicalrequirementsnecessaryforsupplyingaminimumsignalqualitytothesubscribers.Thisclassificationshouldnotbeconsideredasarequirementbutasinformationforusersandmanufacturersontheminimumqualitycriteriaofthematerialrequiredtoinstallnetworksofdifferentsizes.Thesystemoperatorshouldselectappropriatematerialtomeettheminimumsignalqualityatthesubscriber'soutletandtooptimizecost/performance,takingintoaccountthesizeofthenetworkandlocalcircumstances.Allrequirementsandpublisheddatashouldbeunderstoodasguaranteedvalueswithinthespecifiedfrequencyrangeandinwell-matchedconditions.
【中国标准分类号】:M60
【国际标准分类号】:33_060_40;33_170
【页数】:38P.;A4
【正文语种】:英语