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【英文标准名称】:Cablenetworksfortelevisionsignals,soundsignalsandinteractiveservices-Opticalequipment
【原文标准名称】:电视和声音信号及交互服务用电缆网络.光学设备
【标准号】:BSEN60728-6-2003
【标准状态】:作废
【国别】:英国
【发布日期】:2003-12-18
【实施或试行日期】:2003-12-18
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:规范(验收);测量;发射机;绝缘子;有线网;电视广播;接收机;同轴电缆;测量方法;交互;连接件;多路复接器;电视接收;音频信号;光学仪器;光波导;声音广播;有线电视系统;宽带系统;电缆分布系统;性能;宽频带传输;定义;电气工程;特性;测量技术;插接件连接;额定值;放大器;电视信号;多媒体;分电路;定向耦合器
【英文主题词】:Amplifiers;Audiosignals;Branchconduits;Broadbandsystems;Cabledistributionsystems;Cabletelevisionsystem;Cablednetworks;Coaxialcables;Connectoredjoints;Definition;Definitions;Directionalcouplers;Electricalengineering;Insulators;Interactive;Measurement;Measuringtechniques;Methodsformeasuring;Multimedia;Multiplexers;Opticalinstruments;Opticalwaveguides;Performance;Properties;Ratings;Receivers;Soundbroadcasting;Soundtransmission;Specification(approval);Splicedfittings;Televisionbroadcasting;Televisionreception;Transmitters;Visionsignals;Widebandtransmission
【摘要】:ThispartofIEC60728laysdownthemeasuringmethods,performancerequirementsanddatapublicationrequirementsofopticalequipmentofcablenetworksfortelevisionsignals,soundsignalsandinteractiveservices.Thisstandard·appliestoallopticaltransmitters,receivers,amplifiers,directionalcouplers,isolators,multiplexingdevices,connectorsandsplicesusedincablenetworks;·coversthefrequencyrange5MHzto3000MHz;NOTETheupperlimitof3000MHzisanexample,butnotastrictvalue.Thefrequencyrangeorranges,overwhichtheequipmentisspecified,shallbepublished.·identifiesguaranteedperformancerequirementsforcertainparameters;·laysdowndatapublicationrequirementswithguaranteedperformance;·describesmethodsofmeasurementforcompliancetesting.Allrequirementsandpublisheddatarelatetominimumperformancelevelswithinthespecifiedfrequencyrangeandinwell-matchedconditionsasmightbeapplicabletocablenetworksfortelevisionsignals,soundsignalsandinteractiveservices.
【中国标准分类号】:M33
【国际标准分类号】:33_060_40;33_180_01
【页数】:62P.;A4
【正文语种】:英语


【英文标准名称】:Testconditionsformachiningcentres-Part1:Geometrictestsformachineswithhorizontalspindleandwithaccessoryheads(horizontalZ-axis)
【原文标准名称】:加工中心检验条件第1部分:卧式和带附加主轴头的几何精度检验(水平Z轴)
【标准号】:ISO10791-1-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-09
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC39
【标准类型】:()
【标准水平】:()
【中文主题词】:组合加工中心机床;试验;机床;验收试验;数值控制;试验条件;主轴
【英文主题词】:Acceptancetests;Machinetools;Machiningcenters;Numericalcontrol;Spindles;Testing;Testingconditions
【摘要】:Thispartof10791specifies,withreferencetoISO230-1,thegeometrictestsformachiningcentres(ornumericallycontrolledmillingmachines,boringmachines,etc.,whereapplicable)withhorizontalspindle(i.e.horizontalZ-axis).ThispartofISO10791appliestomachiningcentreshavingbasicallyfournumericallycontrolledaxes,ofwhichthreearelinear(X,YandZ)upto2000mminlength,andoneisrotary(B'),butrefersalsotosupplementarymovements,suchasthoseofslidingspindles,rams,oraccessoryuniversalheads.MovementsotherthanthosementionedareconsideredasspecialfeaturesandtherelevanttestsarenotincludedinthispartofISO10791.ThispartofISO10791takesintoconsideration,inannexesA,BandC,threepossibletypesofaccessoryuniversalheads,describedasfollows:—annexA:45°splitindexableheads,withmechanicalindexingofthedifferentangularpositionsofthetwobodies(e.g.Hirthcouplings):therelevanttests(AG1toAG9)checkonlytheresultingpositionofthespindle;—annexB:swivelheads,withtwonumericallycontrolledrotaryaxesperpendiculartoeachother(testsBG1toBG7);—annexC:45°splitcontinuousheads,similartothefirsttypebutprovidedwithcontinuouspositioningofthetwonumericallycontrolledrotaryaxes:therelevanttests(CG1toCG7)checkallthegeometricfeatures(planesandaxes)whichcontributetotheresultingpositionofthespindle,excludingthepositioningaccuracyofthetworotaryaxes;thesetestscanalsobeusedforadeeperinvestigationofthe45°indexableheads,iftheirmovementsandlocksallowthis.ThispartofISO10791dealsonlywiththeverificationofgeometricaccuracyofthemachineanddoesnotapplytothetestingofthemachineoperation,whichshouldgenerallybecheckedseparately.Certaintestsconcerningtheperformanceofthemachineoperatingunderno-loadorfinishingconditionsareincludedinotherpartsofISO10791.
【中国标准分类号】:J58
【国际标准分类号】:25_040_10
【页数】:55P;A4
【正文语种】:英语