DIN EN 50401-2012 验证投入使用的具有基本限值和参数范围的无线通讯网络要求用的固定无线电广播设备(110MHz~40GHz)合格性的产品标准(规定公众暴露于射频电磁场的基本限值和参考范围)

作者:标准资料网 时间:2024-05-17 12:51:30   浏览:9506   来源:标准资料网
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【英文标准名称】:Productstandardtodemonstratethecomplianceoffixedequipmentforradiotransmission(110MHz-40GHz)intendedforuseinwirelesstelecommunicationnetworkswiththebasicrestrictionsorthereferencelevelsrelatedtogeneralpublicexposuretora
【原文标准名称】:验证投入使用的具有基本限值和参数范围的无线通讯网络要求用的固定无线电广播设备(110MHz~40GHz)合格性的产品标准(规定公众暴露于射频电磁场的基本限值和参考范围)
【标准号】:DINEN50401-2012
【标准状态】:现行
【国别】:德国
【发布日期】:2012-06-01
【实施或试行日期】:2012-06-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Absorption;Basestations;Communicationtechnology;Conformityassessment;Conformitytesting;Cordless;Definitions;Electricfields;Electricalengineering;Electromagnetic;Electromagneticcompatibility;Electromagneticfield;Electromagneticfields;Electromagneticradiation;Electromagneticwave;EMC;Exposure;Frequencyranges;Highfrequencies;Humanbody;Laboratorytesting;Limits(mathematics);Magneticfields;Measurement;Measuringtechniques;Mobileradiosystems;People;Population;Productstandards;Radiationaction;Radioequipment;Radionetworks;Subscriberstations;Telecommunication;Telecommunications;Verification;Wireless
【摘要】:
【中国标准分类号】:M36
【国际标准分类号】:17_220_20;33_070_01
【页数】:10P;A4
【正文语种】:德语


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基本信息
标准名称:半导体分立器件 3CD020型低频大功率晶体管详细规范
英文名称:Semiconductor discrete device-Detail specification for Type 3CD020 low-frequency and high-power transistor
中标分类: 通信、广播 >> 通信、广播综合 >> 技术管理
发布日期:1995-05-25
实施日期:1995-12-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
页数:11页
适用范围

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前言

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所属分类: 通信 广播 通信 广播综合 技术管理
【英文标准名称】:StandardTestMethodforMeasurementofNormalIncidenceSoundTransmissionofAcousticalMaterialsBasedontheTransferMatrixMethod
【原文标准名称】:基于传输矩阵法测量声学材料的垂直入射传输的标准试验方法
【标准号】:ASTME2611-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E33.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:4-microphone;impedancetube;normalincidence;transferfunction;transfermatrix;transmissionloss
【摘要】:Thereareseveralpurposesofthistest:Fortransmissionloss:(a)tocharacterizethesoundinsulationcharacteristicsofmaterialsinalessexpensiveandlesstimeconsumingapproachthanTestMethodE90andISO140-3(x201C;reverberantroommethodsx201D;),(b)toallowsmallsamplestestedwhenlargersamplesareimpossibletoconstructortotransport,(c)toallowarapidtechniquethatdoesnotrequireanexperiencedprofessionaltorun.Fortransfermatrix:(a)todetermineadditionalacousticpropertiesofthematerial;(b)toallowcalculationofacousticpropertiesofbuilt-uporcompositematerialsbythecombinationoftheirindividualtransfermatrices.Therearesignificantdifferencesbetweenthismethodandthatofthemoretraditionalreverberantroommethod.Specifically,inthisapproachthesoundimpingesonthespecimeninaperpendiculardirection(x201C;normalincidencex201D;)only,comparedtotherandomincidenceoftraditionalmethods.Additionally,revererationroommethodsspecifycertainminimumsizesfortestspecimenswhichmaynotbepracticalforallmaterials.Atpresentthecorrelation,ifany,betweenthetwomethodsisnotknown.Eventhoughthismethodmaynotreplicatethereverberantroommethodsformeasuringthetransmissionlossofmaterials,itcanprovidecomparisondataforsmallspecimens,somethingthatcannotbedoneinthereverberantroommethod.Normalincidencetransmissionlossmayalsobeusefulincertainsituationswherethematerialisplacedwithinasmallacousticalcavityclosetoasoundsource,forexample,aclosely-fittedmachineenclosureorportableelectronicdevice.Transmissionlossisnotonlyapropertyofamaterial,butisalsostronglydependentonboundaryconditionsinherentinthemethodanddetailsofthewaythematerialismounted.Thismustbeconsideredintheinterpretationoftheresultsobtainedbythistestmethod.Thequantitiesaremeasuredasafunctionoffrequencywitharesolutiondeterminedbythesamplingrate,transformsize,andotherparametersofadigitalfrequencyanalysissystem.Theusablefrequencyrangedependsonthediameterofthetubeandthespacingbetweenthemicrophonepositions.Anextendedfrequencyrangemaybeobtainedbyusingtubeswithvariousdiametersandmicrophonespacings.Theapplicationofmaterialsintoacousticalsystemelementswillprobablynotbesimilartothistestmethodandthereforeresultsobtainedbythismethodmaynotcorrelatewithperformancein-situ.1.1Thistestmethodcoverstheuseofatube,fourmicrophones,andadigitalfrequencyanalysissystemforthemeasurementofnormalincidenttransmissionlossandotherimportantacousticpropertiesofmaterialsbydeterminationoftheacoustictransfermatrix.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A59
【国际标准分类号】:17_140_01
【页数】:14P.;A4
【正文语种】:英语