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1、外文资料SYSTEMOVERVIEWTheDTSisalostcost,computercontrolledtestsystemwhichiscapableoftestingawiderangeoflinearIC,s.Thesystemiscontainedinasinglecabinetandhasarelativelysmallfootprint.ThemajorcomponentsoftheDTSare:MotorolaMicorosystemsVMEseriescomputerSmallprofileprinterInstrume
2、ntataioncardcagePowersupplytraysHewlettPackard3456Aor3458DVM1.MotorolaMicrosystemsComputersTheVME/10isaMC68010basedmicrocomputerbuiltaroundtheVMEbusarchitecture.ThetesterssoftwarerunsundertheVERSAdosoperatingsystemandtheRMS68Kreal-timemultitaskingkernel.Thecomputerhas384Kb
3、ytesofmainmemory,amemorymanagementunit,areal-timeclock/calendar,and5slotVMEbuscardcage.Alsoincludeareadouble-side,double-densityfloppydiskdriveanda40Mbharddisk.AddedinthecardcageareaGPIBcontrollerboard,adualparallelboard,a512Kbmemoryexpansionboard,andaninstrumentionbuscont
4、roller.TheVMEsystem1131isaMC68020basedmachinedesignedaroundatwelveslotVMEbuscompatiblecardcage.Thesystemunit,16Kbofinstructioncache,2Mbofram,andamassstorageunitthathousesa70Mbharddisk,655Kbfloppydisk,anda60Mbstreamingtapedrive.AddedtothisareaGPIBcontrollerhardandanIBUScont
5、rollerboardandanIBUScontrollerboard.TheterminalusedasthesystemconsoleisaMotorolaTM3000terminal.Onbothcomputersystems,thetestersoftwarerunsundertheVERSAdosoperatingsystemandtheRMS68Kreal-timemultitaskingkernel.TheDTSenvironmentisdesignedtolookandoperatethesameonbothsystems.
6、2．PrinterTheprintersisasmall,Centronicscompatibledotmatrixprinter.ItsdimensionsallowittoresideonanextendableshelfwithintheDTScabinet.ItisconnectedtotheVME/10throughoneoftheavailableparallelports,ortotheSYS1131viaoneoftheserialports.3InstrumentationCardRackMostofthetesterin
7、strumentationisinstalledintheupperportionoftheDTScabinet.Thecardrackcanholduptosixteentestinstrumentcards:DCmeasurementsystemboardTestheadmatrixboardVoltagesourceandnanoammeterboardAudiovoltmeterboardControlandmeasurebitsboardTimemeasurementboardHandlerorprobercontrolboard
8、AudiosourceboardEightvoltageandcurrentsourceboardsThecardrackalsocontainsananalogandadigi
