Agilent Technologies 6631B - Manual (Page 95)

Example Programs - D
95
1085 ’
1090 ’Query dc source outputs CURRENT?" :GOSUB 2000 :GOSUB 3000
1100 VOUT = OUTPUTS(1)
1105 IOUT = OUTPUTS(2)
1110 PRINT "The output levels are "VOUT" Volts and "IOUT" Amps"
1115 ’
1120 ’Program triggered current level to value insufficient to maintain
1125 ’supply within its CV operating characteristic
1130 CODES$ = "CURR:TRIG MIN" :GOSUB 2000
1135 ’
1140 ’Set operation status mask to detect mode change from CV to CC
1145 CODES$ = "STAT:OPER:ENAB 1024;PTR 1024" :GOSUB 2000
1150 ’
1155 ’Enable Status Byte OPER summary bit
1160 CODES$ = "*SRE 128" :GOSUB 2000
1165 ’
1170 ’Arm trigger circuit and send trigger to dc source
1175 CODES$ = "INITIATE:SEQUENCE1;TRIGGER" :GOSUB 2000
1180 ’
1185 ’Wait for supply to respond to trigger
1190 FOR I= 1 to 100 :NEXT I
1195 ’
1200 ’Poll for interrupt caused by change to CC mode and print to
screen
1205 CALL IOSPOLL (PS,RESPONSE)
1210 IF (RESPONSE AND 128) <> 128 THEN GOTO 1240 ’No OPER event to
report
1215 CODES$ = "STATUS:OPER:EVEN?" :GOSUB 2000 ’Query status oper
register
1220 CALL IOENTER (PS,OEVENT) ’Read back event bit
1225 IF PCIB.ERR <> NOERR THEN ERROR PCIB.BASERR
1230 IF (OEVENT AND 1024) = 1024 THEN PRINT "Supply switched to CC
mode."
1240 ’Clear the status circuit
1245 CODES$ = "*CLS" :GOSUB 2000
1250 FOR I = 1 TO 100 :NEXT I
’Wait for supply to
clear
1255 ’
1260 ’Disable output and save present state in location 2
1265 CODES$ = "OUTPUT OFF;*SAV 2" :GOSUB 2000
1270 END
1275 ’
2000 ’Send command to dc source
2005 LENGTH = LEN(CODES$)
2010 CALL IOOUTPUTS (PS,CODES$,LENGTH)
’Send command to
interface
2015 IF PCIB.ERR <> NOERR THEN ERROR PCIB.BASERR
’SETUP.BAS error
trap
2020 RETURN
2025 ’
3000 ’Get data from dc source
3005 CALL IOENTERA (PS,OUTPUTS(1),MAX.ELEMENTS,ACTUAL.ELEMENTS)
3010 IF PCIB.ERR <> NOERR THEN ERROR PCIB.BASERR
3015 RETURN