ANSI/SCTE 121-2011 下行信号比特误码率的试验方法
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来源:标准资料网
【英文标准名称】:TestMethodforDownstreamBitErrorRate
【原文标准名称】:下行信号比特误码率的试验方法
【标准号】:ANSI/SCTE121-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Biterror;Bitrate;Broadbandsystems;Cablecommunication;Communicationtechnology;Corrections;Errorcorrection;Errors;Signals;Telecommunications;Testing;Tests;Transmissiontechnique
【摘要】:ThepurposeofthistestistomeasureBitErrorRate(BER)ofdownstream(forwardpath)broadbandtelecommunicationsQAMsignals.Thisprocedurewilladdressmainlypre-ForwardErrorCorrectionBERresultsfor64and256QAM.
【中国标准分类号】:M31
【国际标准分类号】:33_060_40
【页数】:
【正文语种】:英语
【英文标准名称】:StandardSpecificationforSteelInvestmentCastingsGeneralRequirements,forPressure-ContainingParts
【原文标准名称】:容压件使用的熔模钢铸件通用技术要求的标准规范
【标准号】:ASTMA985/A985M-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:A01.18
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:铸塑
【英文主题词】:casting;investmentcasting;masterheat;pressurecontaining;steelcasting;subheat;Generaldeliveryrequirements--steel;Investmentcastings--specifications;Masterheatprocess;Pressure-containingparts;Steelcastings--specifications;Sub-heatpro
【摘要】:1.1Thisspecificationcoversagroupofcommonrequirementsthataremandatoryforsteelcastingsproducedbytheinvestmentcastingprocessforpressure-containingpartsundereachofthefollowingASTMSpecifications:
TitleofSpecification
ASTMDesignation
SteelCastings,Carbon,SuitableforFusionWelding,
A216/A216M
forHigh-TemperatureService
SteelCastings,MartensiticStainlessandAlloy,for
A217/A217M
Pressure-ContainingParts,SuitableforHigh-
TemperatureService
Castings,Austenitic,Austenitic-Ferritic(Duplex),
A351/A351M
forPressure-ContainingParts
SteelCastings,FerriticandMartensitic,forPressure-
A352/A352M
ContainingParts,SuitableforLow-Temperature
Service
SteelCastings,Alloy,SpeciallyHeat-Treated,for
A389/A389M
Pressure-ContainingParts,SuitableforHigh-
TemperatureService
SteelCastingsSuitableforPressureService
A487/A487M
【英文标准名称】:Gypsumboardswithfibrousreinforcement—Definitions,requirementsandtestmethods—Part2:Gypsumfibreboards
【原文标准名称】:带纤维增强的石膏板.定义、要求和试验方法.石膏纤维板
【标准号】:BSEN15283-2-2008
【标准状态】:作废
【国别】:英国
【发布日期】:2008-04-30
【实施或试行日期】:2008-04-30
【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】:声学性质和声学现象;抗弯强度;弯曲拉伸强度;板材;断裂荷载;建筑物;CE标志;CE标记;合格证明书;认证(认可);合格;稳定性(机械性能);建筑;施工材料;施工区域;装配产品;定义;名称与符号;测定;尺寸;特点;建筑用纤维板;纤维增强的;检验;内部装饰;长度;负荷;作标记;测量;机械性能;安装;包装件;灰泥板;熟石膏;石膏板;板;生产控制;性能;质量控制;取样方法;吸声;规范(验收);火焰表面传播;表面;测试;热阻;厚度;水蒸气渗透性;宽度
【英文主题词】:Acousticpropertiesandphenomena;Bendingstrength;Bendingtensilestrength;Boards;Breakingload;Buildings;CEmark;CEmarking;Certificatesofconformity;Certification(approval);Conformity;Consistency(mechanicalproperty);Construction;Constructionmaterials;Constructionzones;Constructionalproducts;Definition;Definitions;Designations;Determination;Dimensions;Features;Fibrebuildingboard;Fibrereinforced;Gypsumpanels;Inspection;Interiordecoration;Length;Loading;Marking;Measurement;Mechanicalproperties;Mounting;Packages;Plastercardboards;PlasterofParis;Plasterboard;Plates;Productioncontrol;Properties;Qualitycontrol;Samplingmethods;Soundabsorption;Specification(approval);Surfacespreadofflame;Surfaces;Testing;Thermalresistance;Thickness;Watervapourpermeability;Width
【摘要】:ThisEuropeanStandardspecifiesthecharacteristicsandperformanceofgypsumfibreboardsintendedtobeusedinbuildingconstructionworksincludingthoseintendedforsecondarymanufacturingoperations.Itincludesboardsdesignedtoreceiveeitherdirectsurfacedecorationorgypsumplaster.Gypsumfibreboardsareselectedforuseaccordingtotheirtype,size,thicknessandedgeprofile.Theboardsmaybeusedforexample,toprovidedryliningfinishestowalls,tofixedandsuspendedceilings,topartitions,orascladdingtostructuralcolumnsandbeams.Otherusesmaybeforfloorsandsheathingapplications.ThisEuropeanStandardcoversthefollowingproductperformancecharacteristics:reactiontofire,watervapourpermeability,flexuralstrength,andthermalresistance.Thefollowingperformancecharacteristicsarelinkedtosystemsassembledwithgypsumfibreboards:shearstrength,fireresistance,impactresistance,directairbornesoundinsulation,acousticabsorption.Ifrequired,testshavetobedoneaccordingtothecorrespondingEuropeantestmethodsonassembledsystemssimulatingtheenduseconditions.ThisEuropeanStandardalsocoversadditionaltechnicalcharacteristicsthatareofimportancefortheuseandacceptanceoftheproductandthereferencetestsforthesecharacteristics.ItprovidesforevaluationofconformityoftheproducttothisEN.ThisEuropeanStandarddoesnotcovergypsumfibreboardsthathavebeensubjecttoanysecondarymanufacturingoperations(e.g.insulatingcompositepanels,boardswiththinlaminationetc.).ProductscoveredbyEN520orEN13815areexcluded.
【中国标准分类号】:Q62
【国际标准分类号】:91_100_10
【页数】:44P.;A4
【正文语种】:英语
