【英文标准名称】:Connectorsforelectronicequipment-Detailspecificationfor8-way,shielded,freeandfixedconnectors,fordatatransmissionswithfrequenciesupto100MHz
【原文标准名称】:电子设备连接器.数据传输频率100MHz及以下的8路的屏蔽活动和固定连接器的详细规范
【标准号】:BSEN60603-7-3-2009
【标准状态】:作废
【国别】:英国
【发布日期】:2010-01-31
【实施或试行日期】:2010-01-31
【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】:反向兼容性;编织外壳;特性;连接;连接器的连接件;接触布局;串音衰减;数据通信;数据传送;定义;详细规范;数字工程;尺寸;直流电压;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;架设(施工作业);评定;固定连接器;量规;高速;信息处理;介入损耗;等容线;低频;连接模式;网;网络;多极;印制电路;印制电路板;性能;质量;质量评定;质量控制;额定值;表示法;回程损耗;分规范;屏蔽的;防护屏蔽;电信;测试;传输特性;类型;非屏蔽的
【英文主题词】:Backwardcompatibility;Braidshieldings;Characteristics;Connections;Connectoredjoints;Contactconfiguration;Crosstalkattenuation;Datacommunication;Datatransfer;Definitions;Detailspecification;Digitalengineering;Dimensions;Directvoltage;Eight-pole;Electricconnectors;Electricplugs;Electricalengineering;Electronicengineering;Electronicequipment;Electronicequipmentandcomponents;Erecting(constructionoperation);Evaluations;Fixedconnectors;Gauges;Highspeed;Informationprocessing;Insertionloss;Isometric;Lowfrequencies;Modeofconnection;Nets;Network;Polypole;Printedcircuits;Printed-circuitboards;Properties;Quality;Qualityassessment;Qualitycontrol;Ratings;Representations;Returnloss;Sectionalspecification;Shielded;Shields;Telecommunication;Testing;Transmissioncharacteristics;Types;Unscreened
【摘要】:mechanicalandenvironmentalrequirementsandelectricaltransmissionrequirementsforfrequenciesupto100MHz.Theseconnectorsaretypicallyusedascategory5connectorsinclassDcablingsystemsspecifiedinISO/IEC11801:2002.Theseconnectorsareintermateable,interoperable,andbackwardcompatiblewithotherIEC60603-7seriesconnectors.WhilethedefinitionofinteroperableisbeingdiscussedwithintheIEC,“interoperable”inthisstandardmeansthefollowing:thefixedandthefreeconnectorarecapableofinterconnectingwithanyIEC60603-7seriesconnector,andwhenitisinterconnected,itfullymeetsallrequirementsofthelowerfrequencyIEC60603-7seriesstandard.NOTETransmissionperformancecategories:inthisIECstandard,theterm“category”,whenusedinreferencetotransmissionperformance,referstothosecategoriesdefinedinISO/IEC11801:2002.
【中国标准分类号】:L23
【国际标准分类号】:31_220_10
【页数】:90P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDeterminationofTurbidityBelow5NTUinStaticMode
【原文标准名称】:静态模式下低于5NTU的浑浊度的测定的标准试验方法
【标准号】:ASTMD6855-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D19.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:calibration;calibrationturbiditystandard;calibrationverification;measurement;nephelometricturbidity;ratioturbidity;turbidimeter;turbidity;turbiditystandards;Calibration--wateranalysisinstrumentation;Nephelometricturbidity;NTU(nephelo
【摘要】:Turbidityisundesirableindrinkingwater,planteffluentwaters,waterforfoodandbeverageprocessing,andforalargenumberofotherwater-dependentmanufacturingprocesses.Removalisoftenaccomplishedbycoagulation,settling,andfiltration.Measurementofturbidityprovidesarapidmeansofprocesscontrolforwhen,how,andtowhatextentthewatermustbetreatedtomeetspecifications.Thistestmethodissuitabletoturbiditysuchasthatfoundindrinkingwater,processwater,andhighpurityindustrialwater.Whenreportingthemeasuredresult,appropriateunitsshouldalsobereported.Theunitsarereflectiveofthetechnologyusedtogeneratetheresult,andifnecessary,providemoreadequatecomparisontohistoricaldatasets.Table1describestechnologiesandreportingresults(seealsoRefs(1),(2),(3)).Thosetechnologieslistedareappropriatefortherangeofmeasurementprescribedinthismethod.Othersmaycomeavailableinthefuture.Fig.X5.1providesaflowcharttoaidinselectionoftheappropriatetechnologyforlow-levelstaticturbidityapplications.IfadesignthatfallsoutsideofthecriterialistedinTable1isused,theturbidityshouldbereportedinturbidityunits(TU)withasubscriptedwavelengthvaluetocharacterizethelightsourcethatwasused.TABLE1ApplicableTechnologiesAvailableforPerformingStaticTurbidityMeasurementsBelow5NTU1.1Thistestmethodcoversthestaticdeterminationofturbidityinwater(see4.1).1.2Thistestmethodisapplicabletothemeasurementofturbiditiesunder5.0nephelometricturbidityunits(NTU).1.3Thistestmethodwastestedonmunicipaldrinkingwater,ultra-purewaterandlowturbiditysamples.Itistheuser''sresponsibilitytoensurethevalidityofthistestmethodforwatersofuntestedmatrices.1.4ThistestmethodusescalibrationstandardsaredefinedinNTUvalues,butotherassignedturbidityunitsareassumedtobeequivalent.1.5Thistestmethodassignstraceablereportingunitstothetypeofrespectivetechnologythatwasusedtoperformthemeasurement.Unitsarenumericallyequivalentwithrespecttothecalibrationstandard.Forexample,a1.0NTUformazinstandardisalsoequaltoa1.0FNUstandard,a1.0FNRUstandardandsoforth.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.RefertotheMSDSsforallchemicalsusedinthisprocedure.
【中国标准分类号】:H26
【国际标准分类号】:19_100
【页数】:14P.;A4
【正文语种】:英语