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【英文标准名称】:ElectromagneticcompatibilityandRadiospectrumMatters(ERM)-Technicalcharacteristicsandmethodsofmeasurementforequipmentforgeneration,transmissionandreceptionofDigitalSelectiveCalling(DSC)inthemaritimeMF,MF/HFand/orVHFmobilese
【原文标准名称】:电磁兼容性和无线电频谱管理(ERM).海上MF、MF/HF和/或VHF移动设施的数字选择呼叫信号发生、传递和接收设备的技术特性和测量方法.第2部分:等级A/BDSC(采用英文版本EN300338-2V1.3.1(2010-02)作为德国标准)
【标准号】:EN300338-2-.3.1
【标准状态】:现行
【国别】:
【发布日期】:2010-06
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:数字的;DSC设备;电气工程;发电;船舶用无线电通信;船舶用无线电通信设备;测量;测量技术;移动无线电通信系统;性能;无线电工程;无线电设备;无线电接收器测量;接收;选择呼叫;规范(验收);通信;电信;发射
【英文主题词】:Digital;DSCequipment;Electricalengineering;Generation;Marineradio;Marineradioservice;Measurement;Measuringtechniques;Mobileradiosystems;Properties;Radioengineering;Radioequipment;Radioreceivermeasurement;Receiving;Selectivecalling;Specification(approval);Telecommunication;Telecommunications;Transmitting
【摘要】:
【中国标准分类号】:U65
【国际标准分类号】:33_060_20;47_020_70
【页数】:2P;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforTestingVariable-WavelengthPhotometricDetectorsUsedinLiquidChromatography
【原文标准名称】:液相色谱用可变波长光度探测器试验的标准规程
【标准号】:ASTME1657-1998(2006)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:E13.19
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:漂移;线性度;变量;液相色谱法;液相色谱法;VWPD可变性;长;短;定期噪声;试验可变性;实施规程;噪声级测量;光度探测器;波长准确度;波长光度探测器;波长光度探测器
【英文主题词】:linearity;noisemeasurement;photometricdetector;variablewavelength;wavelengthaccuracy
【摘要】:Althoughitispossibletoobserveandmeasureeachoftheseveralcharacteristicsofadetectorunderdifferentanduniqueconditions,itistheintentofthispracticethatacompletesetofdetectorspecificationsshouldbeobtainedunderthesameoperatingconditions.Itshouldalsobenotedthattocompletelyspecifyadetectorrsquo;capability,itsperformanceshouldbemeasuredatseveralsetsofconditionswithintheusefulrangeofthedetector.Thetermsandtestsdescribedinthispracticearesufficientlygeneralthattheymaybeusedregardlessoftheultimateoperatingparameters.Linearityandresponsetimeoftherecorderorotherreadoutdeviceusedshouldbesuchthattheydonotdistortorotherwiseinterferewiththeperformanceofthedetector.Thisrequiresadjustingthegain,damping,andcalibrationinaccordancewiththemanufacturerrsquo;directions.Ifadditionalelectronicfiltersoramplifiersareusedbetweenthedetectorandthefinalreadoutdevice,theircharacteristicsshouldalsofirstbeestablished.1.1Thispracticecoversthetestingoftheperformanceofavariable-wavelengthphotometricdetector(VWPD)usedasthedetectioncomponentofaliquid-chromatographic(LC)systemoperatingatoneormorewavelengthsintherange190to800nm.Manyofthemeasurementsaremadeat254nmforconsistencywithPracticeE685.Measurementsatotherwavelengthsareoptional.1.2Thispracticeisintendedtodescribetheperformanceofthedetectorbothindependentlyofthechromatographicsystem(staticconditions)andwithflowingsolvent(dynamicconditions).1.3Forgeneralliquidchromatographicprocedures,consultRefs(1-9).1.4Forgeneralinformationconcerningtheprinciples,construction,operation,andevaluationofliquid-chromatographydetectors,seeRefs(10,11)inadditiontothesectionsdevotedtodetectorsinRefs(1-7).1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N34
【国际标准分类号】:71_040_50
【页数】:8P.;A4
【正文语种】: