【英文标准名称】:Informationtechnology-3,81mmwidemagnetictapecartridgeforinformationinterchange-Helicalscanrecording-DDS-2formatusing120mlengthtape
【原文标准名称】:信息技术.信息交换用3.81mm宽磁带盒.螺旋扫描记录.用120m长带的DDS-2格式
【标准号】:BSISO/IEC13923-1996
【标准状态】:现行
【国别】:英国
【发布日期】:1997-06-15
【实施或试行日期】:1997-06-15
【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】:信息交流;记录特性;磁带;数据介质;盒式磁带;光学测量;数据传送;延伸;磁性材料;厚度;电阻测量;互换性;透射率;工作范围;材料的磁性能;记录设备部件;信噪比;粘附;抗拉强度;尺寸;抗拉试验;数据媒体;磁道间距;信息块格式;行李箱;覆层;锁定装置及定位装置;电波测量;电阻;数据记录;工作环境;数据处理;数据布置
【英文主题词】:Dataprocessing;Datarecording;Datastorage;Definition;Definitions;Dimensions;Helicalscanrecording;Informationinterchange;Informationtechnology;Interchangeability;Magneticproperties;Magneticrecording;Magnetictapes;Physicalproperties;Trackformats
【摘要】:ThisInternationalStandardspecifiesthephysicalandmagneticcharacteristicsofa3,81mmwidemagnetictapecartridgetoenablephysicalinterchangeabilityofsuchcartridgesbetweendrives.Italsospecifiesthequalityoftherecordedsignals,therecordingmethodandtherecordedformat,therebyallowingdatainterchangebetweendrivesbymeansofsuchmagnetictapecartridges.Therecordedformat,knownasDDS-2,includesallthefeaturesoftheDDSrecordedformatspecifiedinISO/IEC12247andoftheDDS-DCrecordedformatspecifiedinISO/IEC11557.TheprincipaldifferencebetweenthisrecordedformatandthoserecordedformatsistheuseofagreatertrackdensitybythisformatInformationinterchangebetweensystemsutilisingthisInternationalStandardalsorequirestheuse,asaminimum,ofalabellingspecification,e.g.ISO1001:1986,Informationprocessing-Filestructureandlabellingofmagnetictapesforinformationinterchange,andaninterchangecodewhichshallbeagreeduponbytheinterchangeparties.Underinformationinterchangecircumstancesinwhichaprocessingalgorithmisappliedtothehostdatapriortorecordingonthetapeandacomplementaryreprocessingalgorithmisappliedafterthedataisreadfromthetape,agreementuponthealgorithmsemployedbytheinterchangepartiesisalsorequired.ItisoutsidethescopeofthisInternationalStandardtospecifyanyofthese.
【中国标准分类号】:L64
【国际标准分类号】:35_220_23
【页数】:112P.;A4
【正文语种】:英语


【英文标准名称】:StandardSpecificationforIn-ServiceTestMethodsforTemporaryGroundingJumperAssembliesUsedonDe-EnergizedElectricPowerLinesandEquipment
【原文标准名称】:断电电源线和设备用临时接地跨接组件的运行中试验方法的标准规范
【标准号】:ASTMF2249-2003(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:F18.45
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:Clamps;De-energizedelectricpowerlines;Electricalprotectiveequipment--specifications;Ferruleattachment;Flexibleelectricalcable;Groundingjumperassemblies;In-serviceevaluation/monitoring;Temporarygroundingsystems
【摘要】:1.1Thesespecificationscoverthein-serviceinspectionandelectricaltestingoftemporaryprotectivegroundingjumperassemblieswhichhavebeenusedbyelectricalworkersinthefield.1.2Thesespecificationsdiscussmethodsfortestinggroundingjumperassemblies,whichconsistoftheflexiblecables,ferrules,clampsandconnectorsusedinthetemporaryprotectivegroundingofde-energizedcircuits.1.3ManufacturingspecificationsforthesegroundingjumperassembliesareinSpecificationsF855.1.4Theapplication,care,use,andmaintenanceofthisequipmentarebeyondthescopeofthisspecification.1.5UnitsofmeasurementusedinthisspecificationareintheMetricsystem(SI)withEnglishunitsgiveninparentheses.1.6Thefollowingsafetyhazardscaveatpertainsonlytothetestportionsofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatoryrequirementspriortouse.
【中国标准分类号】:K85
【国际标准分类号】:29_120_50
【页数】:8P.;A4
【正文语种】:英语