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

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