【英文标准名称】:AnAttributeSkip-LotSamplingProgram
【原文标准名称】:计数间隔批量抽样方案
【标准号】:ANSI/ASQCS1-1987
【标准状态】:作废
【国别】:美国
【发布日期】:1987
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:质量控制;计数检查;抽样方法
【英文主题词】:Inspectionbyattributes;Quality;Qualitycontrol;Samplingmethods
【摘要】:
【中国标准分类号】:A00
【国际标准分类号】:03_120_10
【页数】:
【正文语种】:英语


【英文标准名称】:Cablenetworksfortelevisionsignals,soundsignalsandinteractiveservices-Part3:Activewidebandequipmentforcablenetwork
【原文标准名称】:电视信号,声音信号和交互设备用电缆网络.第3部分:同轴电缆网络用有源宽带设备
【标准号】:IEC60728-3-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-12
【实施或试行日期】:2010-12
【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】:放大器;宽带系统;电缆分布系统;特征;同轴电缆;定义(术语);数字的;交互式的;测量;测量技术;性能;性能要求;信号传输;信号;声音广播;电视接收;电视传输;电视信号;宽频带传输
【英文主题词】:Amplifiers;Broadbandsystems;Cabledistributionsystems;Characteristics;Coaxialcables;Definitions;Digital;Interactive;Measurement;Measuringtechniques;Performance;Performancerequirements;Signaltransmission;Signals;Soundbroadcasting;Televisionreception;Televisiontransmission;Visionsignals;Widebandtransmission
【摘要】:ThispartofIEC60728laysdownthemeasuringmethods,performancerequirementsanddatapublicationrequirementsforactivewidebandequipmentofcablenetworksfortelevisionsignals,soundsignalsandinteractiveservices.Thisstandard·appliestoallbroadbandamplifiersusedincablenetworks;·coversthefrequencyrange5MHzto3000MHz;NOTETheupperlimitof3000MHzisanexample,butnotastrictvalue.Thefrequencyrange,orranges,overwhichtheequipmentisspecified,shouldbepublished.·appliestoone-wayandtwo-wayequipment;·laysdownthebasicmethodsofmeasurementoftheoperationalcharacteristicsoftheactiveequipmentinordertoassesstheperformanceofthisequipment;·identifiestheperformancespecificationstobepublishedbythemanufacturers;·statestheminimumperformancerequirementsofcertainparameters.Amplifiersaredividedintothefollowingtwoqualitylevels:Grade1:amplifierstypicallyintendedtobecascaded;Grade2:amplifiersforusetypicallywithinanapartmentblock,orwithinasingleresidence,tofeedafewoutlets.Practicalexperiencehasshownthatthesetypesmeetmostofthetechnicalrequirementsnecessaryforsupplyingaminimumsignalqualitytothesubscribers.Thisclassificationisnotarequirementbutisprovidedtousersandmanufacturersforinformationaboutminimumqualitycriteriaofthematerialrequiredtoinstallnetworksofdifferentsizes.Thesystemoperatorhastoselectappropriatematerialtomeettheminimumsignalqualityatthesubscriber’soutlet,andtooptimisecost/performance,takingintoaccountthesizeofthenetworkandlocalcircumstances.Allrequirementsandpublisheddataareunderstoodasguaranteedvalueswithinthespecifiedfrequencyrangeandinwell-matchedconditions.
【中国标准分类号】:M61
【国际标准分类号】:33_060_40;33_170
【页数】:68P.;A4
【正文语种】:英语