DD 238-4-1996 场总线.数据链接协议规范
作者:标准资料网 时间:2024-05-17 15:01:04 浏览:9841
来源:标准资料网
【英文标准名称】:Fieldbus.Specificationfordatalinkprotocol
【原文标准名称】:场总线.数据链接协议规范
【标准号】:DD238-4-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-10-15
【实施或试行日期】:1996-10-15
【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】:协议;体系结构;数据传送;通信规程;计算机网络;数据布置;数据传输;通信网;接口;总线网;数据链路层;编码(数据转换)
【英文主题词】:computernetworks;protocols;interfaces(dataprocessing);datatransmission;communicationprocedures;coding(dataconversion);datalinklayer(osi);busnetworks;communicationnetworks;datalayout;datatransfer
【摘要】:
【中国标准分类号】:M11
【国际标准分类号】:35_100_20;25_040_40
【页数】:52P;A4
【正文语种】:英语
【英文标准名称】:Railwayapplications-Rollingstockequipment-Shockandvibrationtests
【原文标准名称】:铁路设施.铁路车辆设备.撞击和振动试验
【标准号】:IEC61373-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-05
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC9
【标准类型】:()
【标准水平】:()
【中文主题词】:认证;电力牵引;电气设备;电驱动装置;设备;铁路设施;铁道车辆;铁路;随机变量;铁路车辆;冲击试验;冲击;试验;交通车辆;运载工具;振动;振动试验
【英文主题词】:Certification;Electrictraction;Electricalequipment;Electrically-operateddevices;Equipment;Railwayapplications;Railwayvehicles;Railways;Randomvariable;Rollingstocks;Shocktests;Shocks;Testing;Trafficvehicles;Vehicles;Vibration;Vibrationtests
【摘要】:ThisInternationalStandardspecifiestherequirementsfortestingitemsofequipmentintendedforuseonrailwayvehicleswhicharesubsequentlysubjectedtovibrationsandshockowingtothenatureofrailwayoperationalenvironment.Togainassurancethatthequalityoftheequipmentisacceptable,ithastowithstandtestsofreasonabledurationthatsimulatetheserviceconditionsseenthroughoutitsexpectedlife.Simulatedlong-lifetestingcanbeachievedinanumberofwayseachhavingtheirassociatedadvantagesanddisadvantages,thefollowingbeingthemostcommon:a)amplification:wheretheamplitudesareincreasedandthetimebasedecreased;b)timecompression:wheretheamplitudehistoryisretainedandthetimebaseisdecreased(increaseofthefrequency);c)decimation:wheretimeslicesofthehistoricaldataareremovedwhentheamplitudesarebelowaspecifiedthresholdvalue.Theamplificationmethodasstatedina)above,isusedinthisstandardandtogetherwiththepublicationsreferredtoinClause2;itdefinesthedefaulttestproceduretobefollowedwhenvibrationtestingitemsforuseonrailwayvehicles.However,otherstandardsexistandmaybeusedwithprioragreementbetweenthemanufacturerandthecustomer.Insuchcasestestcertificationagainstthisstandardwillnotapply.WhereserviceinformationisavailabletestscanbeperformedusingthemethodoutlinedinAnnexA.Ifthelevelsarelowerthanthosequotedinthisstandard,equipmentispartiallycertifiedagainstthisstandard(onlyforserviceconditionsgivingfunctionaltestvalueslowerthanorequaltothosespecifiedinthetestreport).Whilstthisstandardisprimarilyconcernedwithrailwayvehiclesonfixedrailsystems,itswideruseisnotprecluded.Forsystemsoperatingonpneumatictyres,orothertransportationsystemssuchastrolleybuses,wherethelevelofshockandvibrationclearlydifferfromthoseobtainedonfixedrailsystems,thesupplierandcustomercanagreeonthetestlevelsatthetenderstage.Itisrecommendedthatthefrequencyspectraandtheshockduration/amplitudebedeterminedusingtheguidelinesinAnnexA.Equipmenttestedatlevelslowerthanthosequotedinthisstandardcannotbefullycertifiedagainsttherequirementsofthisstandard.Anexampleofthisistrolleybuses,wherebybody-mountedtrolleybusequipmentcouldbetestedinaccordancewithcategory1equipmentreferredtointhestandard.Thisstandardappliestosingleaxistesting.Howevermulti-axistestingmaybeusedwithprioragreementbetweenthemanufacturerandthecustomer.Thetestvaluesquotedinthisstandardhavebeendividedintothreecategoriesdependentonlyupontheequipment’slocationwithinthevehicle.
【中国标准分类号】:S30
【国际标准分类号】:17_160;45_060_01
【页数】:74P.;A4
【正文语种】:英语
【英文标准名称】:Medicalelectricalequipment-Recurrenttestandtestafterrepairofmedicalelectricalequipment.
【原文标准名称】:医疗电气设备.医疗电气设备的循环试验和维修后试验
【标准号】:NFC74-053-2008
【标准状态】:现行
【国别】:法国
【发布日期】:2008-03-01
【实施或试行日期】:2008-03-13
【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】:事故预防;交付使用;定义;设计;接地导线;接地;电器;电接触保护;电力系统;电气工程;电气设备;医用电气设备;电气保护设备;电气安全;电驱动装置;电磁兼容性;电医学;设备安全;检验(质量保证);检验;漏电;泄漏电流测量;泄漏电流;测量;机械安全;医疗设备;医学科学;医疗技术学;职业安全;防电击;维修;重复试验;连接器电阻;安全;安全装置;安全工程;安全要求;规范(验收);测试;测试条件;工作场所安全
【英文主题词】:Accidentprevention;Commissioning;Definition;Definitions;Design;Earthconductors;Earthing;Electricappliances;Electriccontactprotection;Electricpowersystems;Electricalappliances;Electricalengineering;Electricalequipment;Electricalmedicalequipment;Electricalprotectionequipment;Electricalsafety;Electrically-operateddevices;Electromagneticcompatibility;Electromedicine;EMC;Equipmentsafety;Examination(qualityassurance);Inspection;Leakagecurrent;Leakagecurrentmeasurement;Leakagecurrents;Measurement;Mechanicalsafety;Medicalequipment;Medicalsciences;Medicaltechnology;Occupationalsafety;Protectionagainstelectricshocks;Repair;Repeattests;Resistanceofconductor;Safety;Safetydevices;Safetyengineering;Safetyrequirements;Specification(approval);Testing;Testingconditions;Workplacesafety
【摘要】:
【中国标准分类号】:C30
【国际标准分类号】:11_040_01
【页数】:53P.;A4
【正文语种】:其他
