Keithley 2002

Calibration
2-9
NOTE
Valid calibration constants will be saved,
and comprehensive calibration will be au-
tomatically locked out after the calibration
procedure has been completed.
2.8.3 IEEE-488 bus comprehensive calibration
Follow the procedure outlined below to perform comprehen-
sive calibration over the IEEE-488 bus. Table 2-4 summa-
rizes the calibration procedure and bus commands. See
Appendix B for example calibration programs.
Table 2-4
IEEE-488 bus comprehensive calibration summary
Step Description IEEE-488 bus command*
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Warm-up, unlock calibration
Initiate calibration
DC Zero calibration
+2VDC calibration
+20VDC calibration
1MΩ calibration
200kΩ calibration
20kΩ calibration
2kΩ calibration
200Ω calibration
20Ω calibration
200µA calibration
2mA calibration
20mA calibration
200mA calibration
2A calibration
Open-circuit calibration
Perform user AC cal
Save calibration dates
Save calibration constants
Lock out calibration
:CAL:PROT:INIT
:CAL:PROT:DC:ZERO
:CAL:PROT:DC:V2 2
:CAL:PROT:DC:V20 20
:CAL:PROT:DC:OHM1M 1E6
:CAL:PROT:DC:OHM200K 100E3
:CAL:PROT:DC:OHM20K 19E3
:CAL:PROT:DC:OHM2K 1.9E3
:CAL:PROT:DC:OHM200 190
:CAL:PROT:DC:OHM20 19
:CAL:PROT:DC:A200U 200E-6
:CAL:PROT:DC:A2M 2E-3
:CAL:PROT:DC:A20M 20E-3
:CAL:PROT:DC:A200M 200E-3
:CAL:PROT:DC:A2 1
:CAL:PROT:DC:OPEN
:CAL:UNPR:ACC
:CAL:PROT:DATE <yr>, <mon>, <day>
:CAL:PROT:NDUE <yr>, <mon>, <day>
:CAL:PROT:DC:SAVE
:CAL:PROT:LOCK
* For resistance calibration points, use exact calibrator value for command parameter instead of nominal
parameter shown.