SAE AS27648 Bearing, Ball, Airframe, Anti-Friction, External Self Aligning Extra Light Duty
作者:标准资料网 时间:2024-04-29 07:40:59 浏览:8797
来源:标准资料网
Product Code:SAE AS27648
Title:Bearing, Ball, Airframe, Anti-Friction, External Self Aligning Extra Light Duty
Issuing Committee:Acbg Rolling Element Bearing Committee
Scope: No scope available.
Rationale: No scope available.
【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
【英文标准名称】:Testmethodsfordirectarcfurnaces
【原文标准名称】:电弧熔炼炉试验方法
【标准号】:DINVDE0721-1012-1984
【标准状态】:作废
【国别】:德国
【发布日期】:1984-02
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:额定值;试验;试验条件;定义;电炉;炉;电弧炉;电弧;检验规范;电气工程
【英文主题词】:electricarcs;ratings;arcfurnaces;electricfurnaces;definitions;testing;testingconditions;electricalengineering;furnaces;inspectionspecification
【摘要】:
【中国标准分类号】:K61
【国际标准分类号】:25_180_10
【页数】:12P;A4
【正文语种】:德语
