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【英文标准名称】:Chains.Welded-linkloadingchains.Commonspecifications.
【原文标准名称】:链.焊接负载扁节链.通用规范
【标准号】:NFE26-009-1981
【标准状态】:作废
【国别】:法国
【发布日期】:1981-05-01
【实施或试行日期】:1981-05-22
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸;验收试验;验收检验;输送机链;制造;分类;分类系统;名称与符号;规范;焊接链条;扁节链;试样;拉力试验;断裂伸长;测量;生产;作标记;尺寸公差;材料的机械性能;验收;抗拉试验;焊接;试验;接收;机械性能
【英文主题词】:
【摘要】:
【中国标准分类号】:J18
【国际标准分类号】:53_020_30
【页数】:10P;A4
【正文语种】:其他


【英文标准名称】:Electroacoustics.Hearingaids.Electromagneticcompatibility(EMC)
【原文标准名称】:电声学.助听器.电磁兼容性(EMC)
【标准号】:BSEN60118-13-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-08-31
【实施或试行日期】:2011-08-31
【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】:
【英文主题词】:Acoustics;Definitions;Electricalengineering;Electroacoustics;Electromagneticcompatibility;EMC;Features;Fieldstrength(electric);Frequencies;Frequencyranges;Hearingaids;Highfrequencies;Immunity;Interferencerejections;Limits(mathematics);Measuringincertainity;Measuringtechniques;Noisesources;Performance;Telephones;Testsignals;Testing;Transmissioncharacteristics
【摘要】:ThispartofIEC60118inprinciplecoversallrelevantEMCphenomenaforhearingaids.EMCphenomena,suchasRFemissionandelectrostaticdischarge,arenotcurrentlyknowntobeasignificantprobleminconnectionwithhearingaidsandarethereforenotdealtwith.Basedonnewknowledge,theycouldbeconsideredinconnectionwithfuturerevisionsorextensionsofthisstandard.Hearingaidimmunitytohighfrequencyelectromagneticfieldsoriginatingfromdigitalwirelessdevicesoperatinginthefrequencyranges0,8GHzto0,96GHzand1,4GHzto2,48GHziscurrentlyidentifiedastheonlyrelevantEMCphenomenonregardinghearingaids.FutureeditionsofthispartofIEC60118mayaddtestsforotherfrequencybands,astheycomeintomorecommonuse.IEC61000-4-3isthebasisforrelevantEMCteststobeconductedonhearingaids.MeasurementmethodsandacceptancelevelsaredescribedinthispartofIEC60118.ForthepurposeofthispartofIEC60118,twoimmunityclassesofhearingaidsaredefined(see3.1)relatedtotheiruse."Bystandercompatible"ensuresthatahearingaidisusableinenvironmentswheredigitalwirelessdevicesareinoperationintheproximityofthehearingaidwearer."Usercompatible"hearingaidsensuresthatahearingaidisusablewhenthewearerisusingadigitalwirelessdeviceatthewearer’sownaidedear.Measurementmethodsforhearingaidswithnon-acousticoutputsandforhearingaidsconnectedtootherequipmentbycablesarenotgiveninthisstandard.
【中国标准分类号】:L31
【国际标准分类号】:17_140_50;33_100_20
【页数】:26P.;A4
【正文语种】:英语