Keithley 6512 Instruction Manual page 151

Program 5. Calibration program
' Model 6512 calibration program using Model 263 Calibrator
OPEN "IEEE" FOR OUTPUT AS #1
OPEN "IEEE" FOR INPUT AS #2
PRINT #1, "REMOTE 8 27"
PRINT #1, "CLEAR"
CLS
PRINT "Connect 263 to 6512 input and external voltage source."
PRINT "See Figures 7-3 and 7-4 in Section 7 of manual."
PRINT "Set external voltage source to output 190.00V to 263."
PRINT "Set 6512 GUARD switch to OFF."
PRINT "Press any key to continue."
SLEEP
PRINT "Calibrating..."
PRINT #1, "OUTPUT 8;F1R3V190E-12X"
DATA 3,1.9E-10,5,1.9E-8,8,1.9E-5,11,.019
FOR I = 1 TO 4
READ R
PRINT #1, "OUTPUT 27;F1R"; R; "X"
PRINT #1, "OUTPUT 8;R"; R; "X"
PRINT #1, "OUTPUT 8;Z1O1X"
SLEEP 2
PRINT #1, "OUTPUT 27;Z1X"
SLEEP 1
PRINT #1, "OUTPUT 27;C0X"
SLEEP 5
PRINT #1, "OUTPUT 27;N1X"
PRINT #1, "OUTPUT 8;Z0X"
IF I = 1 THEN SLEEP 18 ELSE SLEEP 3
READ R
PRINT #1, "OUTPUT 27;A"; R; "X"
SLEEP 2
PRINT #1, "OUTPUT 27;N0Z0C1X"
NEXT I
PRINT #1, "OUTPUT 8;O0X"
BEEP: PRINT "Amps ranges calibrated: 200pA, 20nA, 20uA, 20mA": PRINT
SLEEP 2
PRINT #1, "OUTPUT 27;F3XR3Z1X"
PRINT #1, "OUTPUT 8;F3R4V19E-9X"
PRINT #1, "OUTPUT 27;C0X"
SLEEP 2
PRINT #1, "OUTPUT 27;N1X"
PRINT #1, "OUTPUT 8;O1X"
SLEEP 2.5
PRINT #1, "OUTPUT 27;A19E-9X"
SLEEP 2
BEEP: PRINT "20nC coulombs range calibrated.": PRINT
PRINT #1, "OUTPUT 8;F2R1V190E-3X"
DATA .19,1.9,19
FOR I = 1 TO 3
' Open IEEE-488 output path.
' Open IEEE-488 input path.
' Put 263, 6512 in remote.
' Send DCL.
' 263: output 190pA.
' 6512: select I range.
' 263: select I range.
' 263: output 0A to 6512.
' 6512 zero correct unit.
' 6512: disable zero check.
' 6512: enable suppress.
' 263: output I to 6512.
' 6512: send cal value.
' 6512: disable suppress.
' 263: place in standby.
' 6512: 20nC range, zero correct.
' 263: program 19nC.
' 6512: disable zero check.
' 6512: enable suppress.
' 263: output 19nC.
' 6512: send cal value.
' 263: program for 190mV.
Example Programs
D-7