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®J1939-15ISSUEDNOV2003SURFACEVEHICLERECOMMENDEDPRACTICEReducedPhysicalLayer,250Kbits/sec,Un-ShieldedTwistedPair(UTP)Issued2003-11ForewordThisseriesofSAERecommendedPracticeshavebeendevelopedbytheTruck&BusControlandCommunicationsNetworkSubcommitteeoftheSAETruckandBusElectrical/ElectronicCommittee.Theobjectivesofthesubcommitteearetodevelopinformationreports,recommendedpracticesandstandardsconcernedwiththerequirements,designandusageofdeviceswhichtransmitelectronicsignalsandcontrolinformationamongvehiclecomponents.Theusageoftheserecommendedpracticesisnotlimitedtotruckandbusapplications.Otherapplicationsmaybeaccommodatedwithimmediatesupportbeingprovidedforconstructionandagriculturalequipment,andstationarypowersystems.TheseSAERecommendedPracticesareintendedasaguidetowardstandardpracticeandaresubjecttochangetokeeppacewithexperienceandtechnicaladvances.TABLEOFCONTENTS1.SCOPE.............................................................................................................................................32.REFERENCES.................................................................................................................................32.1ApplicableDocuments.....................................................................................................................32.1.1SAEPublications.......................................................................................................................32.2RelatedPublications........................................................................................................................32.2.1ISOPublications........................................................................................................................33.NETWORKPHYSICALDESCRIPTION.........................................................................................33.1PhysicalLayer..................................................................................................................................33.2PhysicalMedia.................................................................................................................................43.3DifferentialVoltage...........................................................................................................................43.4BusLevels........................................................................................................................................43.5BusLevelsDuringArbitration..........................................................................................................43.6CommonModeBusVoltageRange................................................................................................43.7BusTermination...............................................................................................................................43.8InternalResistance..........................................................................................................................43.9DifferentialInternalResistance........................................................................................................43.10InternalCapacitance........................................................................................................................43.11DifferentialInternalCapacitance......................................................................................................43.12BitTime............................................................................................................................................43.13InternalDelayTime..........................................................................................................................43.14CANBitTimingRequirements.........................................................................................................5SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.Copyright©2003SocietyofAutomotiveEngineers,Inc.Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystemortransmitted,inanyformorbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutthepriorwrittenpermissionofSAE.TOPLACEADOCUMENTORDER:Tel:877-606-7323(insideUSAandCanada)Tel:724-776-4970(outsideUSA)Fax:724-776-0790Email:custsvc@sae.orgSAEWEBADDRESS:`-`-`,,`,,`,`,,`---SAEJ1939-15IssuedNOV2003-2-4.FUNCTIONALDESCRIPTION........................................................................................................65.ELECTRICALSPEC
本文标题:SAE-J1939-15-2003
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