【英文标准名称】:Standardmethodsformeasuringtransmissionperformanceofanaloganddigitaltelephonesets
【原文标准名称】:模拟及数字电话机的传输性能测量的标准方法
【标准号】:IEEE269-1992
【标准状态】:作废
【国别】:美国
【发布日期】:1992
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:传输特性;数字数据;模拟信号;传输;电话技术;语言传输;电话设备;电话机;电话机组;电话机;数据传送
【英文主题词】:telephonetechnics;transmissionperformances;analoguesignals;telephones;datatransfer;telephonesets;transmission;digitaldata;speechtransmission;telephoneequipment
【摘要】:
【中国标准分类号】:M40
【国际标准分类号】:33_040_60
【页数】:40P;A4
【正文语种】:英语


【英文标准名称】:Samplingproceduresforinspectionbyattributes-Proceduresforassessmentofdeclaredqualitylevels
【原文标准名称】:按属性检验的取样规程.申报质量等级的评定规程
【标准号】:BS6001-5-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-11-01
【实施或试行日期】:2002-11-01
【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】:验收试验;缺陷;统计方法分析;检验;抽样表;抽样计划;误差极限;验收;计数检查;评定;评定;抽样方法;定义;定义;验收样品的检验;质量控制;合格试验
【英文主题词】:
【摘要】:ThispartofISO2859establishessamplingplansandproceduresthatcanbeusedtoassesswhetherthequalitylevelofanentity(lot,process,etc)conformstoadeclaredvalue.Thesamplingplanshavebeendevisedsoastoobtainariskoflessthan5%ofcontradictingacorrectdeclaredqualitylevel.Theriskis10%offailingtocontradictanincorrectdeclaredqualitylevelwhichisrelatedtothelimitingqualityratio(seeclause4).Samplingplansareprovidedcorrespondingtothreelevelsofdiscriminatoryability.IncontrasttotheproceduresintheotherpartsofISO2859,theproceduresinthispartofISO2859arenotapplicabletoacceptanceassessmentoflots.Generally,thebalancingoftherisksofreachingincorrectconclusionsinassessmentprocedureswilldifferfromthebalancingintheproceduresforacceptancesampling.ThispartofISO2859maybeusedforvariousformsofqualityinspectioninsituationswhereobjectiveevidenceofconformitytosomedeclaredqualitylevelistobeprovidedbymeansofinspectionofasample.Theproceduresareapplicabletoentitiessuchaslots,processoutput,etc.thatallowrandomsamplesofindividualitemstobetakenfromtheentity.ThesamplingplansprovidedinthispartofISO2859areapplicable,butnotlimited,toinspectionofavarietyofproductssuchas—enditems;—componentsandrawmaterials;—operations;—materialsinprocess;—suppliesinstorage;—maintenanceoperations;—dataorrecords;—administrativeprocedures.Theproceduresareprimarilyintendedtobeusedwhenthequantityofinterestisthenumberorfractionofnonconformingitemsforwhichtheinspecteditemsareclassifiedasconformingornonconforming.Withminorchanges,theproceduresmayalsobeusedwhenthequantityofinterestisthenumberofnonconformitiesornumberofnonconformitiesperitem.Thenecessarychangesare:—replacementof"numberofnonconformingitems"by"numberofnonconformities";—replacementof"percentnonconformingitems"by"nonconformitiesper100items".InthiscasethevaluesgiveninTables2to7areonlyapproximations.
【中国标准分类号】:A00
【国际标准分类号】:03_120_30
【页数】:22P;A4
【正文语种】:英语