IEEE1101101996IEEEStandardforAdditionalMechanicalS

iIEEEStd1101.10-1996IEEEStandardforAdditionalMechanicalSpecificationsforMicrocomputersUsingtheIEEEStd1101.1-1991EquipmentPracticeSponsorBusArchitectureStandardsCommitteeoftheIEEEComputerSocietyApproved10December1996IEEEStandardsBoardAbstract:Agenericstandardthatmaybeappliedinallfieldsofelectronicswhereequipmentandinstallationsarerequiredtoconformtothe482.6mm(19in)equipmentpracticebasedonIEEE1101.1-1991,IEC297-3(1984),andIEC297-4(1995).Dimensionsareprovidedthatwillensuremechanicalinterchangeabilityofsubracksandplug-inunits.Keywords:dimensions,mechanicalinterchangeability,plug-inunits,subracksTheInstituteofElectricalandElectronicsEngineers,Inc.345East47thStreet,NewYork,NY10017-2394,USACopyright©1997bytheInstituteofElectricalandElectronicsEngineers,Inc.Allrightsreserved.Published1997.PrintedintheUnitedStatesofAmerica.ISBN1-55937-863-8Nopartofthispublicationmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.iiIEEEStandardsdocumentsaredevelopedwithintheIEEESocietiesandtheStandardsCoordinatingCommitteesoftheIEEEStandardsBoard.Membersofthecommitteesservevoluntarilyandwithoutcompensation.TheyarenotnecessarilymembersoftheInstitute.ThestandardsdevelopedwithinIEEErepresentaconsensusofthebroadexpertiseonthesubjectwithintheInstituteaswellasthoseactivitiesoutsideofIEEEthathaveexpressedaninterestinparticipatinginthedevelopmentofthestandard.UseofanIEEEStandardiswhollyvoluntary.TheexistenceofanIEEEStandarddoesnotimplythattherearenootherwaystoproduce,test,measure,purchase,market,orprovideothergoodsandservicesrelatedtothescopeoftheIEEEStandard.Furthermore,theviewpointexpressedatthetimeastandardisapprovedandissuedissubjecttochangebroughtaboutthroughdevelopmentsinthestateoftheartandcommentsreceivedfromusersofthestandard.EveryIEEEStandardissubjectedtoreviewatleasteveryfiveyearsforrevisionorreaffirmation.Whenadocumentismorethanfiveyearsoldandhasnotbeenreaffirmed,itisreasonabletoconcludethatitscontents,althoughstillofsomevalue,donotwhollyreflectthepresentstateoftheart.UsersarecautionedtochecktodeterminethattheyhavethelatesteditionofanyIEEEStandard.CommentsforrevisionofIEEEStandardsarewelcomefromanyinterestedparty,regardlessofmembershipaffiliationwithIEEE.Suggestionsforchangesindocumentsshouldbeintheformofaproposedchangeoftext,togetherwithappropriatesupportingcomments.Interpretations:Occasionallyquestionsmayariseregardingthemeaningofportionsofstandardsastheyrelatetospecificapplications.WhentheneedforinterpretationsisbroughttotheattentionofIEEE,theInstitutewillinitiateactiontoprepareappropriateresponses.SinceIEEEStandardsrepresentaconsensusofallconcernedinterests,itisimportanttoensurethatanyinterpretationhasalsoreceivedtheconcurrenceofabalanceofinterests.Forthisreason,IEEEandthemembersofitssocietiesandStandardsCoordinatingCommitteesarenotabletoprovideaninstantresponsetointerpretationrequestsexceptinthosecaseswherethematterhaspreviouslyreceivedformalconsideration.Commentsonstandardsandrequestsforinterpretationsshouldbeaddressedto:Secretary,IEEEStandardsBoard445HoesLaneP.O.Box1331Piscataway,NJ08855-1331USAAuthorizationtophotocopyportionsofanyindividualstandardforinternalorpersonaluseisgrantedbytheInstituteofElectricalandElectronicsEngineers,Inc.,providedthattheappropriatefeeispaidtoCopyrightClearanceCenter.Toarrangeforpaymentoflicensingfee,pleasecontactCopyrightClearanceCenter,CustomerService,222RosewoodDrive,Danvers,MA01923USA;[phone].PermissiontophotocopyportionsofanyindividualstandardforeducationalclassroomusecanalsobeobtainedthroughtheCopyrightClearanceCenter.Note:Attentioniscalledtothepossibilitythatimplementationofthisstandardmayrequireuseofsubjectmattercoveredbypatentrights.Bypublicationofthisstandard,nopositionistakenwithrespecttotheexistenceorvalidityofanypatentrightsinconnectiontherewith.TheIEEEshallnotberesponsibleforidentifyingpatentsforwhichalicensemayberequiredbyanIEEEstandardorforconductinginquiriesintothelegalvalidityorscopeofthosepatentsthatarebroughttoitsattention.iiiIntroduction(ThisintroductionisnotpartofIEEEStd1101.10-1996,IEEEStandardforAdditionalMechanicalSpecificationsforMicrocomputersUsingtheIEEEStd1101.1-1991EquipmentPractice.)Withthewidespreadacceptanceofinternational(IEC)microcomputerarchitecturesbasedontheEurocardformfactor,theIEEEComputerSocietyTechnicalCommitteeonMicrocomputersandMicroprocessorsfounditappropriatetoformanIEEEstandardtoexpanduponIEEEStd1101.1-1991andtheIEC297seriesofstandards,DimensionsofMechanicalStructuresofthe482.6mm(19in)Series(IEC297-1,IEC297-3andIEC297-4).Thisadditionalstandardprovidesdesignengineerswiththedimensionsandtolerancesnecessarytoensuremechanical,electromagneticcompatibility(EMC),andelectrostaticdischarge(ESD)functioncompatibility.ThisadditionalstandardwillbeinconformancewithIECDrafts48D/1587-1and48D/1587-3.Thisadditionalstandardoffersmechanical,EMC,andESDsystemintegrationdetails.Itoffersadvantagessuchasreductionindesignanddevelopmenttime,manufacturingcostsavings,anddistinctmarketingadvantages.Thisstandardc