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24 Remote Programming
Programming Some Power Supply Functions (continued)
3030 WHILE C< >O
3035 D$=MID$(OUTPUT$,I,C-I)
3040 OUTPUT(X)=VAL(D$) 'Get values
3045 I=C+1
3050 C=INSTR(I,OUTPUT$,";")
3055 X=X+1
3060 WEND
3065 D$=RIGHT$(OUTPUT$,LEN(OUTPUT$)-(I-1))
3070 OUTPUT(X)=VAL(D$)
3076 OUTPUT$=SPACE$(40) 'Clear string
3080 RETURN
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Controller Using Agilent BASIC
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1000 !Power supply at stand-alone address = 706
1005 OPTION BASE 1
1010 DIM Codes$[80],Response$[80],Mode$[32]
1015 !
1020 !Program power supply to CV mode with following voltage and current
1026 OUTPUT 706;"VOLTAGE 7.8;CURRENT 480”
1030 !
1035 !Query power supply outputs and print to screen
1040 OUTPUT 706;"MEASURE:VOLTAGE?;CURRENT?" !Query output levels
1045 ENTER 706;Vout, Iout
1050 PRINT "The output levels are ";Vout;" Volts and ";Iout" Amps"
1055 !
1060 !Program current triggered level to a value insufficient to maintain
1065 !supply within its CV operating characteristic
1070 OUTPUT 706;"CURR:TRIG 50"
1075 !
1080 !Set operation status mask to detect mode change from CV to CC
1085 OUTPUT 706;"STAT:OPER:ENAB 1280;PTR 1280"
1090 !
1095 !Enable Status Byte OPER summary bit
1100 OUTPUT 706;"*SRE 128"
1105 !
1110 !Arm trigger circuit and send trigger to power supply
1115 OUTPUT 706;"INITIATE;TRIGGER"
1130 !Poll for interrupt caused by change to CC mode and print to screen
1135 Response=SPOLL(706)
1140 IF NOT BIT (Response,7) THEN GOTO 1130 !No OPER event to report
1145 OUTPUT 706;"STAT:OPER:EVEN?" !Query status operation register
1160 ENTER 706;Oevent !Read back event bit
1156 IF BIT(Oevent,10) THEN PRINT "Supply switched to CC mode."
1160 !
1165 !Clear status
1170 OUTPUT 706;"*CLS"
1176 !
1180 !Disable output and save present state in location 2
1185 OUTPUT 706;"OUTPUT OFF;*SAV 2”
1190 END