【英文标准名称】:Connectorsforelectronicequipment-Part7-5:Detailspecificationfor8-way,shielded,freeandfixedconnectors,fordatatransmissionwithfrequenciesupto250MHz
【原文标准名称】:电子设备用连接器.第7-5部分:数据传输频率250MHz的8路屏蔽的活动和固定连接器的详细规范
【标准号】:IEC60603-7-5-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-04
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC48B
【标准类型】:()
【标准水平】:()
【中文主题词】:反向兼容性;连接器的连接件;串音衰减;数据通信;数据传送;定义;详细规范;数字工程;尺寸;八极;电连接器;电插头;电气工程;电子工程;电子设备;电子设备及元件;评定;固定连接器;信息处理;介入损耗;多极;印制电路;性能;质量;质量评定;额定值;回程损耗;屏蔽的;防护屏蔽;电信;试验;传输特性;类型
【英文主题词】:Backwardcompatibility;Connectoredjoints;Crosstalkattenuation;Datacommunication;Datatransfer;Definitions;Detailspecification;Digitalengineering;Dimensions;Eight-pole;Electricconnectors;Electricplugs;Electricalengineering;Electronicengineering;Electronicequipment;Electronicequipmentandcomponents;Evaluations;Fixedconnectors;Informationprocessing;Insertionloss;Polypole;Printedcircuits;Properties;Quality;Qualityassessment;Ratings;Returnloss;Shielded;Shields;Telecommunication;Testing;Transmissioncharacteristics;Types
【摘要】:ThispartofIEC60603covers8-way,shielded,freeandfixedconnectorsandreferencesdimensional,mechanical,electricalandenvironmentalcharacteristicsandtestsinIEC60603-7andIEC60603-7-1,andspecifieselectricaltransmissionrequirementsforfrequenciesupto250MHz.Theseconnectorsaretypicallyusedascategory6connectorsinclassEcablingsystemsspecifiedinISO/IEC11801.TheseconnectorsareintermateableandinteroperablewithotherIEC60603-7seriesconnectorsasdefinedinClause2ofIEC60603-7.TheseconnectorsarebackwardcompatiblewithotherIEC60603-7seriesconnectors.
【中国标准分类号】:L23
【国际标准分类号】:31_220_10
【页数】:30P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforUsingHeatFlowMeterApparatustoMeasuretheCenter-of-PanelThermalResistivityofVacuumPanels
【原文标准名称】:用热流仪表器具测量真空板条中心点耐热性的标准试验方法
【标准号】:ASTMC1667-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:C16.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:器具;热流;仪表;板条;抵抗力;测试;热的;真空的;墙
【英文主题词】:effectivethermalresistance(effectiveR-value);thermalconductivity;thermalresistance;vacuuminsulationpanel
【摘要】:Heatflowmeterapparatusarebeingusedtomeasurethecenter-of-panelportionofavacuuminsulationpanel,whichtypicallyhasaveryhighvalueofthermalresistivity[thatis,equaltoorgreaterthan90m-K/W(12.5h-ft2-x00B0;F/Btu-in.)].AsdescribedinSpecificationC1484,thecenter-of-panelthermalresistivityisused,alongwiththepanelgeometryandbarriermaterialthermalconductivity,todeterminetheeffectivethermalresistanceoftheevacuatedpanel.Usingaheatflowmeterapparatustomeasurethethermalresistivityofnon-homogenousandhighthermalresistancespecimensisanon-standardapplicationoftheequipment,andshallonlybeperformedbyqualifiedpersonnelwithunderstandingofheattransferanderrorpropagation.Familiaritywiththeconfigurationofboththeapparatusandthevacuumpanelisnecessary.Thecenter-of-panelthermaltransmissionpropertiesofevacuatedpanelsvaryduetothecompositionofthematerialsofconstruction,meantemperatureandtemperaturedifference,andthepriorhistory.Theselectionofrepresentativevaluesforthethermaltransmissionpropertiesofanevacuatedpanelforaparticularapplicationmustbebasedonaconsiderationofthesefactorsandwillnotapplynecessarilywithoutmodificationtoallserviceconditions.1.1Thistestmethodcoversthemeasurementofsteady-statethermaltransmissionthroughthecenterofaflatrectangularvacuuminsulationpanelusingaheatflowmeterapparatus.1.2Totalheattransferthroughthenon-homogenousgeometryofavacuuminsulationpanelrequiresthedeterminationofseveralfactors,asdiscussedinSpecificationC1484.Oneofthosefactorsisthecenter-of-panelthermalresistivity.Thecenter-of-panelthermalresistivityisanapproximationofthethermalresistivityofthecoreevacuatedregion.1.3ThistestmethodisbaseduponthetechnologyofTestMethodC518butincludesmodificationsforvacuumpanelapplicationsasoutlinedinthistestmethod.1.4ThistestmethodshallbeusedinconjunctionwithPracticeC1045andPracticeC1058.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.EitherSIorinch-poundunitsareacceptableinthereport,unlessotherwisespecified.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q70
【国际标准分类号】:91_060_10
【页数】:8P.;A4
【正文语种】: