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IEC 60728-3-2010 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

作者:标准资料网 时间:2024-05-18 19:23:35  浏览:8106   来源:标准资料网
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【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


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【英文标准名称】:StandardSpecificationforCelluloseAcetatePropionateMoldingandExtrusionCompounds
【原文标准名称】:纤维素醋酸酯丙酸酯模制和挤制化合物的标准规范
【标准号】:ASTMD1562-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:纤维素;静压铸件;纤维素丙酸酯;化合物;塑料
【英文主题词】:cellulosepropionate;compounds;staticalcasting;cellulose;plastics
【摘要】:
【中国标准分类号】:G17
【国际标准分类号】:83_140_99
【页数】:5P;A4
【正文语种】:英语


Product Code:SAE AS643
Title:Hose Assembly, Polytetrafluoroethylene, Metal Braid, Medium Pressure, Flared, 45掳 to 45掳
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:Scope unavailable.

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