Agilent Technologies 66lxxA Option Base, Start Voltage for Ramp, Stop Voltage for Ramp, Seconds

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10! APPLICATION #3: CONTROLLING VOLTAGE RAMP UP AT TURN ON

20! PROGRAM: APP_3

30	!
40	ASSIGN @Slot0 To 70500	!	SELECT CODE 7, MAINFRAME ADDRESS 05, SLOT 00
50	!
60	OPTION BASE 1
70	DIM V_Step(20)	!	ARRAY TO HOLD THE VOLTAGE RAMP STEPS
80	Vstart=2	!	START VOLTAGE FOR RAMP
90	Vstop=10	!	STOP VOLTAGE FOR RAMP
100	Ramp_time=.5	!	SECONDS TO CHANGE FROM Vstart TO Vstop
110	Dwell=Ramp_time/19	!	IN SECONDS
120	!

130! SINCE THE OUTPUT STAYS AT THE LAST VOLTAGE POINT AFTER ITS DWELL TIME EXPIRES, THE DWELL TIME OF THE

140! LAST POINT IS NOT PART OF THE TRANSITION TIME. THEREFORE, DIVIDE THE TOTAL TIME BY 19 POINTS, NOT 20.

150! ALSO, YOU ONLY NEED TO DOWNLOAD 1 DWELL TIME. IF THE MODULE RECEIVES ONLY 1 DWELL TIME, IT ASSUMES

160! YOU WANT THE SAME DWELL TIME FOR EVERY POINT IN THE LIST.

170!

180FOR I=1 TO 20

190

V_step(l)=Vstart+(((Vstop-Vstart)/20)*I)

!

CALCULATES VOLTAGE LIST POINTS

200NEXT I

210!

220	OUTPUT @Slot0;"RST;CLS;STATUS:PRESET"	!	RESET AND CLEAR MODULE
230	OUTPUT @Slot0;”VOLT ";Vstart	!	START RAMP AT Vstart
240	OUTPUT @Slot0;”CURR .1”
250	OUTPUT @Slot0;"OUTPUT ON"	!	ENABLE OUTPUT
260	OUTPUT @Slot0;”VOLT:MODE LIST"	!	SET TO GET VOLTAGE FROM LIST
270	OUTPUT @Slot0;”LIST:VOLT ";V_step(*)	!	DOWNLOAD VOLTAGE POINTS
280	OUTPUT @Slot0;”LIST:DWELL ";Dwell	!	DOWNLOAD 1 DWELL TIME
290	OUTPUT @Slot0;”LIST:STEP AUTO"	!	DWELL-PACED LIST
300	OUTPUT @Slot0;”INITIATE"	!	ENABLE TRIGGER TO START LIST
310	!

320! BEFORE TRIGGERING THE MODULE, DETERMINE IF IT IS READY BY CHECKING FOR

330! 'WAITING FOR TRIGGER' (BIT 5 OF THE OPERATION STATUS REGISTER).

340!

350! YOU COULD ELIMINATE THIS STEP BY SIMPLY INSERTING A PAUSE IN THE PROGRAM. HOWEVER, BY

360! CHECKING THE INSTRUMENT STATUS, YOU CAN AVOID TIMING PROBLEMS. ALSO, ANY OTHER OPERATIONS

370! THAT TAKE TIME WILL GIVE THE MODULE A CHANCE TO COMPLETE PROCESSING.

380!

390REPEAT

400	OUTPUT @Slot0;”STATUS:OPERATION:CONDITION?"
410	ENTER @Slot0;Condition_data
420	UNTIL BIT(Condition_data,5)	!	TEST FOR BIT 5 = TRUE
430	!

440! SEND TRIGGER COMMAND TO START LIST AND GENERATE THE VOLTAGE RAMP

450!

460	OUTPUT @Slot0;”TRIGGER:IMMEDIATE"	!	THIS IS AN IMMEDIATE TRIGGER, WHICH IS ALWAYS ACTIVE.
470		!	THEREFORE, IT DOES NOT NEED TO BE SELECTED AS A TRIGGER
			SOURCE.

480!

490END

Figure B3-4. Agilent BASIC Program Listing for Application #3

Application Programs 81

Image 80

Contents Agilent Part No Microfiche Part No Update April Programming GuideSafety Guidelines Contents Abor Status Reporting Synchronizing Power Module Output Changes Error MessagesIntroduction About This GuideDocumentation Summary External ReferencesVXIplug&play Power Products Instrument Drivers Downloading and Installing the DriverAccessing Online Help Supported ApplicationsGpib Capabilities Of The Power Module Introduction To ProgrammingModule Gpib Address Introduction To ScpiRST *IDN? *SRE Volt LEV Prot Curr Voltlev 8.0 Prot 8.8 CURR?Outpprotdel Traversing the Command Tree Effect of Optional HeadersOutputprotectionclear STATUSOPERATIONCONDITION? OUTPUTPROTECTIONCLEARSTATUSOPERATIONCONDITION?Voltagelevel 7PROTECTION 8CURRENTLEVEL 3MODE List Volttrig 7.5INIT*TRG Outp OFF*RCL 2OUTP onSymbol Numerical Data Formats Talking FormatsListening Formats Suffixes and Multipliers Class Unit Unit with MultiplierSystem Considerations Assign @PM3TOError Handling Agilent Basic ControllersUsing the National Instruments Gpib Interface Sending the Command Volt 5 in Basic Sending the Command Volt 5 in CReceiving Data from the Module Receiving Module Data with BasicReceiving Module Data with C Language Dictionary IntroductionDescription Of Common Commands CLSMeaning and Type DescriptionBit Configuration of Standard Event Status Enable Register ESEESE ESR?OPC? IDN?OPC OPT? PSCRST RCLRCL SRE SAVSRE TRG Bit Configuration of Status Byte RegisterSTB? Description of Subsystem Commands TST?WAI AborSubsystem Tree Diagram Calibration Subsystem CalautoCalauto 1 Calauto Once CalcurrCalcurrlev CalpassCalsave CalstatCalvolt CalvoltlevCalvoltprot CurrCurr 500 MA Currlev CurrmodeCurrprotstat Currprotstat OFFCurrtrig Currtrig 1200 MA CurrlevtrigInit Initcont 1 Initcont on ListcounListcoun Listcoun INF ListcurrLISTCURRPOIN? ListdwelLISTDWELPOIN? ListstepListvolt Listvolt 2.0,2.5,3.0 Listvolt MAX,2.5,MINLISTVOLTPOIN? MEASCURR? MEASVOLT?Outp Outpstat ON,NORELAY OutpprotOutpprotcle Outpprotdel 75E-1 OutprelOutprelpol NormOutpttlt Outpttlt 1 Outpttlt OFFOutpttltlink Outpttltsour LinkSTATOPER? STATOPEREVEN?STATOPERCOND? StatoperenabStat Oper NTR 32 Stat Oper PTR StatpresSTATQUES? STATQUESEVEN?STATQUESCOND? Stat Ques COND?SYSTERR? SYSTVERS?Trigger Subsystem TrigTrig Trig IMM TrigdelTrigdel .25 Trigdel MAX TriglinkVolt VoltlevVoltmode Voltmode List Voltmode FIXVolttrig 1200 MV Voltlevtrig VOLTSENSSOUR?Volttrig Power Module Programming Parameters Link Parameter ListPower Module Status Structure Status Register Bit ConfigurationStatus Reporting Operation Status GroupQuestionable Status Group Bit Signal Bit Configurations of Status Registers MeaningStatus Questionable Commands Query Power Module Status Model Standard Event Status GroupLocation Of Event Handles Status Byte RegisterOutput Queue Initial Conditions At Power On ExamplesStatoperptr 5376ENAB Statquesptr 18ENABSTATOPEREVEN?QUESEVEN? Statoperptr 1024NTR Statoperenab 1024*SREModel of Fixed-Mode Trigger Operation Synchronizing Power Module Output ChangesTrigger Subsystem Initiated State Delaying StateIdle State Model of List Mode Trigger Operation INITiateCONTinuous CommandTrigger Status and Event Signals Output Change StateOutpttltsour List Subsystem Listvolt 3.0,3.25,3.5,3.75 Listdwel 10,10,25,40 Automatically Repeating a ListListcurr 2,3,12,15 Triggering a ListTiming diagrams of Liststep Operation RI Remote Inhibit Subsystem DFI Discrete Fault Indicator SubsystemScpi Command Completion Error Messages Power Module Hardware Error MessagesSystem Error Messages Standard Event Status Register Error Bits222 -223 -241 -310 -330 -350 -400 -410 -420 -430 Scpi Confirmed Commands Scpi Approved CommandsScpi Conformance Information Scpi VersionNon-SCPI Commands Application Programs Application 1. Sequencing Multiple Modules During Power Up Figure B1-1. Block Diagram of Application #1 Variations On This ImplementationFigure B1-2. Timing Diagram of Application #1 Reset and Clear Module Enable Backplane TTL Trigger DriveEnable Output Enable Response to TriggerImplementation Details How The MPS Implements The Solution MPS Set Up Figure B2-1. Block Diagram of Application #2 When a CV-TO-CC Transition Occurs Enable TTL Trigger DriveEnable Response to TTL Trigger Start AT 15Application 3. Controlling Output Voltage Ramp Up at Turn On Figure B3-1. Simulating a Slow Voltage Ramp Generating the Desired Voltage Ramp for Application #3 Option Base Start Voltage for RampStop Voltage for Ramp SecondsApplication 4. Providing Time-Varying Voltages Figure B4-1. Voltage Waveform for Application #4Module set up Variations On This Implementation Enable OCP No Delay Before Protection OccursEnable Detection of OC Condition Enables Detection on Positive TRANSITION, I.EApplication 5. Providing Time-Varying Current Limiting Figure B5-1. Typical DUT Current vs. Time Implementation Details How The MPS Implements The Sequence GO to 12 V When Triggered Current Limit DataDwell Time Data SET to GET Current from ListApplication 6. Output Sequencing Paced by the Computer Nominal 12MPS Set Up Figure B6-1. Block Diagram of Application #6 These are the Bias Supply Limit ConditionsTo be Tested Number of Bias Supply Limit C0MBINATIONSReturn Overview Of Application Advantages/Benefits Of The MPS Solution Figure B7-1. Block Diagram of Application #7 When the Module Indicates SIC Step Completed When IT Completes the LIST. OPC Generates SROEnable SRQ Interrupt Enable Intr Identify Handler SubroutineSupplemental Information CMD$ = Output on ‘ Enable Output CMD$ = Initiate ‘ Enable Trigger to Start List‘ Conversion to Send Real Numbers Over the BUS CMD$ = Voltmode List ‘ SET to GET Voltage from ListCall Iooutputs SLOTO, CMDS, L Waiting for Trigger BIT 5 of the Operation Status RegisterCONDITION.DATA = Wend‘ Disable Auto Serial Poll If IBSTA% 0 then Goto ‘ AS Part of the Command String‘ Program N3.BAS ‘ INSTRUMENT.NAME$ = SlotoStop ‘ General Error HandlerIf IBSTA% 0 then Goto Selected AS a Trigger Source Application #3 Controlling Voltage Ramp UP AT Turn on Dwell = ramptimeTo terminate the iooutputa Int error Char *badstring If error != EOl enabled for both read and write Strcatvlist, vpoint This is a generalized error checking routine Index IndexIndex Index Index Agilent Sales and Support Offices United States Latin AmericaManual Updates