【英文标准名称】:Cablenetworksfortelevisionsignals,soundsignalsandinteractiveservices-Part4:Passivewidebandequipmentforcoaxialcablenetworks(TA5)
【原文标准名称】:电视信号、声音信号和交互式服务用电缆网络.第4部分:同轴电缆网络用无源宽带设备(TA5)
【标准号】:IEC60728-4-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-08
【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/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:音频信号;分支导管;宽带系统;电缆分布系统;电缆电视;电缆网络;公共天线电视;同轴电缆;通讯链;连接电缆;接线箱;连接件;数据记录;退耦;定义;分配器;电气工程;频率范围;等级(质量);交互式;测量技术;计量学;通用件;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;宽带传输
【英文主题词】:Audiosignals;Branchconduits;Broadband;Broadbandnetwork;Broadbandsystems;Cabledistributionsystems;Cabletelevision;Cableddistributionsystems;Cablednetworks;CATV;Central-antennatelevision;Coaxialcables;Communicationchains;Connectingcables;Connectionboxes;Connections;Damping;Datarecording;Decoupling;Definitions;Distortion;Distributors;Electricalengineering;Frequencyranges;Grades(quality);Interactive;Intermodulation;Measurement;Measuringtechniques;Metrology;Modularunits;Modulation;Performancerequirements;Ratings;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】:32P;A4
【正文语种】:英语


【英文标准名称】:Mycoplasmadetectionmethods--Part1:Microbiologicalcultivationassay
【原文标准名称】:支原体检测方法.第1部分:微生物培养检验法
【标准号】:JISK3810-1-2003
【标准状态】:现行
【国别】:日本
【发布日期】:2003-12-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonChemicalProducts
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:この規格は,細胞培養及び細胞培養に用いられる試薬類並びに細胞培養によって生産された製品からマイコプラズマを分離培養して検出する方法について規定する。
【中国标准分类号】:A40
【国际标准分类号】:07_080;07_100_01
【页数】:16P;A4
【正文语种】:日语