ANSI/SCTE 120-2011 75-300Ohm匹配变压器平衡比试验方法

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【英文标准名称】:TestMethodforBalanceRatioof75-300OhmMatchingTransformer
【原文标准名称】:75-300Ohm匹配变压器平衡比试验方法
【标准号】:ANSI/SCTE120-2011
【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】:Coaxial;Connectors;Cords;Frequencies;Impedance;Matching;Measuring;Methodsformeasuring;Radiofrequencies;Screws(bolts);Transformers
【摘要】:Thistestprocedureprovidesamethodformeasuringthebalanceratioofbroadbandradiofrequency(RF)deviceswhoseprimarypurposeistoprovideanimpedanceandconnectormatchbetween75W,coaxial,type'F'and300Wtwin-leadopenscrewconnectorizeddevices.
【中国标准分类号】:K41
【国际标准分类号】:29_180
【页数】:
【正文语种】:英语


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【英文标准名称】:StandardGuideforDataFieldsforComputerizedTransferofDigitalUltrasonicTestingData
【原文标准名称】:数字超声波测试数据的计算机传送用数据段的标准指南
【标准号】:ASTME1454-2002(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:E07.11
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:database;dataretrieval;datastorage;guide;nondestructivetesting;ultrasonicexamination;ultrasonicimage;Archivalstorage/retrieval;Computerizedsystems;Dataanalysis--computerized;Digitalelectronicdata;Electronicdata;Informationsto
【摘要】:Theprimaryuseofthisguideistoprovideastandardizedapproachforthedatafiletobeusedforthetransferofdigitalultrasonicdatafromoneusertoanotherwherethetwousersareworkingwithdissimilarultrasonicsystems.Thisguidedescribesthecontents,bothrequiredandoptional,foranintermediatedatafilethatcanbecreatedfromthenativeformatoftheultrasonicsystemonwhichthedatawascollectedandthatcanbeconvertedintothenativeformatofthereceivingultrasonicordataanalysissystem.Thedevelopmentoftranslatorsoftwaretoaccomplishthesedataformatconversionsisbeingaddressedunderaseparateeffort;thiswillincludespecificitemsneededforthedatatransfer,forexample,languageused,memoryrequirementsandintermediatespecification,includingdetaileddataformatsandstructures.Thsguidewillalsobeusefulinthearchivalstorageandretrievalofultrasonicdataaseitheradataformatspecifierorasaguidetothedataelementsthatshouldbeincludedinthearchivalfile.Althoughtherecommendedfieldlistingincludesmorethan120items,onlyaboutonethirdofthoseareregardedasessentialandmarkedwithFootnoteCinTable1.Fieldssomarkedmustbeaddressedinthedatabase.Theotherrecommendedfieldsprovideadditionalinformationthatauserwillfindhelpfulinunderstandingtheultrasonicexaminationresult.Theseheaderfielditemswill,inmostcases,makeuponlyaverysmallpartofanultrasonicexaminationfile.Theactualstreamofultrasonicdatathatmakeuptheimagewilltakeupthelargestpartofthedatabase.Sinceanultrasonicimagefilewillnormallybelarge,theconceptofdatacompressionwillbeconsideredinmanycases.Compresseddatashouldbenoted,alongwithadescriptionofthecompressionmethod,asindicatedinFieldNo.122.Thisguidedescribesthestructureofadatafileforalloftheultrasonicinformationcollectedinasinglescan.Somesystemsrecordmultipleinspectionresultsduringasinglescan.Forexample,throughtransmissionattenuationdataaswellaspulseechothicknessdatamayberecordedatthesametime.Thesedatamaybestoredinseparateimageplanes;seeFieldNo.102.Inothersystems,completedigitizedwaveformsmayberecordedateachinspectionpoint.Itisrecognizedthatthecompleteexaminationrecordmaycontainseveralfiles,forexample,forthesameexaminationmethodindifferentobjectareas,withorwithoutimageprocessing,fordifferentexaminationmethods(through-transmission,pulse-echo,radiologic,infrared,etc.)collectedduringthesameorduringdifferentscansessions,andforvariationswithinasinglemethod(frequencychange,etc.).Informationabouttheexistenceofotherimages/examinationrecordsfortheexaminedobjectshouldbenotedintheappropriatefields.Asingleimageplanemaybeonecreatedbyoverlayingorprocessingresultsformultipleexaminationapproaches,forexampledatafusion.Forsuchimages,thenotessectionsmustclearlystatehowtheimageforthisfilewascreated.TABLE1FieldListingFieldNumberAFieldNameandDescriptionDataType/UnitsBHeaderInformation:

1C
Intermediatefilename
Alphanumericstring
基本信息
标准名称:辅助产品设计文件管理制度 设计文件的编号
发布日期:1985-10-01
实施日期:1986-12-01
首发日期:
作废日期:1995-04-21
出版日期:
页数:3页
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