ZB T 31040.2-1988 1型六角开槽螺母 细牙A和B级
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基本信息
标准名称: | 1型六角开槽螺母 细牙A和B级 |
中标分类: |
车辆 >>
车辆通用零部件 >>
紧固件 |
替代情况: | 转化为QC/T 366-1999 |
发布日期: | |
实施日期: | 1991-01-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 3页 |
适用范围
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前言
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引用标准
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所属分类: 车辆 车辆通用零部件 紧固件
MIL-STD-1637B, MILITARY STANDARD: DUMMY LOADS, ELECTRICAL, WAVEGUIDE, COAXIAL, AND STRIPLINE, SELECTION OF (22 SEP 1989) [NO S/S DOCUMENT]., This military standard provides standard waveguide, coaxial, and stripline dummy loads considered by the Department of Defense as standard for use in military equipment and applications.【英文标准名称】:Cableddistributionsystemsfortelevisionandsoundsignals-Activewidebandequipmentforcoaxialcablenetworks
【原文标准名称】:电视和声信号用电缆分布系统.有源同轴电缆网络的活动宽带设备
【标准号】:BSEN50083-3-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2002-07-03
【实施或试行日期】:2002-07-03
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;标准化组件;电视广播;测量技术;规范(验收);计量学;组件;定义;定义;电缆网;全波回路;单路连接器;数据记录;宽带网络;电缆系统;性能;规范;电缆分布系统;电缆电视系统;宽带系统;宽带放大器;声音广播;公共天线电视;同轴电缆;电缆电视;音频信号;放大器
【英文主题词】:Amplifiers;Audiosignals;Broadbandnetwork;Broadbandsystems;Cabledistributionsystems;Cablesystems;Cabletelevision;Cabletelevisionsystem;Cablednetworks;Central-antennatelevision;Coaxialcables;Components;Datarecording;Definition;Definitions;Electricalengineering;Full-wavecircuitry;Measuringtechniques;Metrology;Modularunits;Performance;Single-wayconnections;Soundbroadcasting;Specification;Specification(approval);Televisionbroadcasting;Widebandamplifiers
【摘要】:StandardsofEN50083seriesdealwithcablenetworksfortelevisionsignals,soundsignalsandinteractiveservicesincludingequipment,systemsandinstallationsforheadendreception,processinganddistributionoftelevisionandsoundsignalsandtheirassociateddatasignalsandforprocessing,interfacingandtransmittingallkindsofsignalsforinteractiveservicesusingallapplicabletransmissionmedia.AllkindsofnetworkslikeCATV-networks,MATV-networksandSMATV-networks,Individualreceivingnetworksandallkindsofequipment,systemsandinstallationsinstalledinsuchnetworks,arewithinthisscope.Theextentofthisstandardisationworkisfromtheantennas,specialsignalsourceinputstotheheadendorotherinterfacepointstothenetworkuptothesystemoutletortheterminalinput,wherenosystemoutletexists.Thestandardisationofanyuserterminals(i.e.tuners,receivers,decoders,multimediaterminalsetc.)aswellasofanycoaxialandopticalcablesandaccessoriesthereforisexcluded.Thisstandardappliestoallbroadbandamplifiersusedincablenetworks;coversthefrequencyrange5MHzto3000MHz;appliestoone-wayandtwo-wayequipment;laysdownthebasicmethodsofmeasurementoftheoperationalcharacteristicsoftheactiveequipmentinordertoassesstheperformanceofthisequipment;identifiestheperformancespecificationsthatshallbepublishedbythemanufacturers;statestheminimumperformancerequirementsofcertainparameters.Amplifiersaredividedintothefollowingtwoqualitylevels:Grade1:Amplifierstypicallyintendedtobecascaded.Grade2:Amplifiersforusetypicallywithinanapartmentblock,orwithinasingleresidence,tofeedafewoutlets.Practicalexperiencehasshownthesetypesmeetmostofthetechnicalrequirementsnecessaryforsupplyingaminimumsignalqualitytothesubscribers.Thisclassificationshallnotbeconsideredasarequirementbutastheinformationforusersandmanufacturersontheminimumqualitycriteriaofthematerialrequiredtoinstallnetworksofdifferentsizes.Thesystemoperatorhastoselectappropriatematerialtomeettheminimumsignalqualityatthesubscriber′soutlet,andtooptimisecost/performance,takingintoaccountthesizeofthenetworkandlocalcircumstances.Allrequirementsandpublisheddataareunderstoodasguaranteedvalueswithinthespecifiedfrequencyrangeandinwellmatchedconditions.
【中国标准分类号】:M60
【国际标准分类号】:33_060_40
【页数】:56P.;A4
【正文语种】:英语