Keithley SourceMeter 2400, Service Manual, Page: 128 / 137

C-6 Calibration Programs
Requesting calibration constants
Program C-2 listed below demonstrates how to request the calibration constants from the
Model 2400. The program requests and displays the calibration constants for all ranges of both
the volts and current measurement functions.
Program C-2. Requesting calibration constants
' Example program to request calibration constants.
' Model 2400 primary address = 24
OPEN "IEEE" FOR OUTPUT AS #1 ' Open IEEE-488 output path.
OPEN "IEEE" FOR INPUT AS #2 ' Open IEEE-488 input path.
PRINT #1, "INTERM CRLF" ' Set input terminator.
PRINT #1, "OUTTERM LF" ' Set output terminator.
PRINT #1, "REMOTE 24" ' Put 2400 in remote.
PRINT #1, "OUTPUT 24;*RST" ' Restore defaults.
CLS
PRINT #1, "OUTPUT 24;:SENS:FUNC:CONC OFF"
PRINT #1, "OUTPUT 24;:SENS:FUNC 'VOLT:DC'"
PRINT #1, "OUTPUT 24;:SOUR:FUNC VOLT"
PRINT #1, "OUTPUT 24;:CAL:PROT:CODE 'KI002400'" 'Unlock calibration.
Range = .2 ' Initial range = 200mV.
PRINT "Model 2400 Voltage Calibration Constants:": PRINT
DO ' Loop for all volts ranges.
PRINT #1, "OUTPUT 24;:SOUR:VOLT:RANGE ";Range
PRINT #1, "OUTPUT 24;:CAL:PROT:SENS:DATA?"
PRINT #1, "ENTER 24"
LINE INPUT #2, Data$
PRINT Data$
PRINT #1, "OUTPUT 24;:CAL:PROT:SOUR:DATA?"
PRINT #1, "ENTER 24"
LINE INPUT #2, Data$
PRINT DATA$
Range = Range * 10
LOOP WHILE Range! <= 200
PRINT #1, "OUTPUT 24;:CAL:PROT:LOCK"
PRINT #1, "OUTPUT 24;:SENS:FUNC 'CURR:DC'"
PRINT #1, "OUTPUT 24;:SOUR:FUNC CURR"
PRINT #1, "OUTPUT 24;:CAL:PROT:CODE 'KI002400'"
Range = .000001 ' Initial range = 1µA.