BS EN 50090-4-3-2008 家用和建筑物用电子系统(HBES).介质独立层.IP通信
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【英文标准名称】:Homeandbuildingelectronicsystems(HBES)-Mediaindependentlayers-CommunicationoverIP
【原文标准名称】:家用和建筑物用电子系统(HBES).介质独立层.IP通信
【标准号】:BSEN50090-4-3-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-08-29
【实施或试行日期】:2008-08-29
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:自动化;开放系统互连;基本家用设备;建筑自动化;建筑物服务设施;建筑物;电路网络;通信;通信技术;控制装置;控制系统;数据总线;数据通信;数据交换;数据网络;数据处理;数据传送;电气设备;电子仪器;电子系统;英语;因特网;因特网协议;IP;网络互连;协议;规范(验收);系统工程;传输协议
【英文主题词】:Automation;Automationinstallationsinbuildings;Basicdomesticfacilities;Buildingautomations;Buildingservices;Buildings;Circuitnetworks;Communication;Communicationtechnology;Controldevices;Controlsystems;Databus;Datacommunication;Dataexchange;Datanetwork;Dataprocessing;Datatransfer;Electricalequipment;Electronicinstruments;Electronicsystems;Englishlanguage;Internet;InternetProtocol;IP;Networkinterconnection;Protocols;Specification(approval);Systemengineering;Transmissionprotocol
【摘要】:
【中国标准分类号】:
【国际标准分类号】:35_100_01;97_120
【页数】:8P;A4
【正文语种】:英语
【英文标准名称】:ElectromagneticcompatibilityandRadiospectrumMatters(ERM)-Citizens'Band(CB)radioequipment-Part1:technicalcharacteristicsandmethodsofmeasurement(V1.3.1).
【原文标准名称】:电磁兼容性和射频频谱物质(ERM).民用波段(CB)无线电设备.第1部分:技术特点和测量方法(V1.3.1).
【标准号】:NFZ84-433-1-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-11-01
【实施或试行日期】:2011-11-19
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Amplitudemodulation;Characteristics;Citizens'band;Doublesideband;Electricalengineering;Electromagneticcompatibility;Electronicengineering;EMC;Emission;ETSI;Frequencies;Instruments;Interferingemissions;Land-mobileservices;Measurement;Measuringtechniques;Methods;Mobileradiosystems;Performance;Radio;Radioengineering;Radioequipment;Radiosystems;Ratings;Singlesideband;Symbols;Technology;Telecommunication;Telecommunicationnetworks;Telecommunicationsystems;Telecommunications;Telephonenetworks;Testing
【摘要】:
【中国标准分类号】:M36;L06
【国际标准分类号】:33_060_20;33_100_10
【页数】:48P;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforDigitalDetectorArrayPerformanceEvaluationandLong-TermStability
【原文标准名称】:数字探测器阵列性能评估和长期稳定性标准实施规程
【标准号】:ASTME2737-2010
【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】:E07.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:badpixels;contrastsensitivity;DDA;five-groovewedge;imagelag;materialthicknessrange;SNR;spatialresolution
【摘要】:ThispracticeisintendedtobeusedbytheNDTusingorganizationtomeasurethebaselineperformanceoftheDDAandtomonitoritsperformancethroughoutitsserviceasanNDTimagingsystem.ItistobeunderstoodthattheDDAhasalreadybeenselectedandpurchasedbytheuserfromamanufacturerbasedontheinspectionneedsathand.Thispracticeisnotintendedtobeusedasanx201C;acceptancetestx201D;oftheDDA,butrathertoestablishaperformancebaselinethatwillenableperiodicperformancetrackingwhilein-service.AlthoughmanyofthepropertieslistedinthisstandardhavesimilarmetricstothosefoundinPracticeE2597,datacollectionmethodsarenotidentical,andcomparisonsamongvaluesacquiredwitheachstandardshouldnotbemade.Thispracticedefinestheteststobeperformedandrequiredintervals.AlsodefinedarethemethodsoftabulatingresultsthatDDAuserswillcompletefollowinginitialbaseliningoftheDDAsystem.ThesetestswillalsobeperformedperiodicallyatthestatedrequiredintervalstoevaluatetheDDAsystemtodetermineifthesystemremainswithinacceptableoperationallimitsasestablishedinthispracticeordefinedbetweenuserandcustomer(CEO).ThereareseveralfactorsthataffectthequalityofaDDAimageincludingthespatialresolution,geometricalunsharpness,scatter,signaltonoiseratio,contrastsensitivity(contrast/noiseratio),imagelag,andburnin.Thereareseveraladditionalfactorsandsettings(forexample,integrationtime,detectorparametersorimagingsoftware),whichaffecttheseresults.Additionally,calibrationtechniquesmayalsohaveanimpactonthequalityoftheimage.ThispracticedelineatestestsforeachofthepropertieslistedhereinandestablishesstandardtechniquesforassuringrepeatabilitythroughoutthelifecycletestingoftheDDA.1.1ThispracticedescribestheevaluationofDDAsystemsforindustrialradiology.Itisintendedtoensurethattheevaluationofimagequality,asfarasthisisinfluencedbytheDDAsystem,meetstheneedsofusers,andtheircustomers,andenablesprocesscontrolandlongtermstabilityoftheDDAsystem.1.2ThispracticespecifiesthefundamentalparametersofDigitalDetectorArray(DDA)systemstobemeasuredtodeterminebaselineperformance,andtotrackthelongtermstabilityoftheDDAsystem.1.3TheDDAsystemperformancetestsspecifiedinthispracticeshallbecompleteduponacceptanceofthesystemfromthemanufacturerandatintervalsspecifiedinthispracticetomonitorlongtermstabilityofthesystem.Theintentofthesetestsistomonitorthesystemperformancefordegradationandtoidentifywhenanactionneedstobetakenwhenthesystemdegradesbyacertainlevel.1.4Theuseofthegagesprovidedinthisstandardismandatoryforeachtest.Intheeventthesetestsorgagesarenotsufficient,theuser,incoordinationwiththecognizantengineeringorganization(CEO)maydevelopadditionalormodifiedtests,testobjects,gages,orimagequalityindicatorstoevaluatetheDDAsystem.AcceptancelevelsfortheseALTERNATEtestsshallbedeterminedbyagreementbetweentheuser,CEOandmanufacturer.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N46
【国际标准分类号】:11_040_50
【页数】:19P.;A4
【正文语种】:英语
