Keithley 2651A Reference Manual page 726

Appendix B: Calibration
22. If this step is not on the CALA sense mode, send the measure calibration command using the
multimeter and Model 2651A readings, and range setting for the parameters:
smua.measure.calibratev(-range, Z_rdg, DMM_Z_rdg, FS_rdg, DMM_FS_rdg)
Where:
-range
Z_rdg
DMM_Z_rdg
FS_rdg
DMM_FS_rdg
Typical Model 2651A 1 V range values:
smua.measure.calibratev(-1, -1e-4, -1e-6, -0.89, -0.896)
D. Be sure to complete each of the 22 steps of C for all 11 voltage source and measure function
steps in the
calibration.
E. Select automatic polarity mode:
smua.cal.polarity = smua.CAL_AUTO
Step 3. Current calibration adjustment
Figure 116: Connections for current calibration (100 mA range and below)
B-26
Model 2651A High Power System SourceMeter® Instrument Reference Manual
= The negative of the present calibration range
= The zero Model 2651A measurement
= The zero DMM measurement
= The FS Model 2651A measurement
= The FS DMM measurement
Model 2651A step sequence
Digital multimeter
Model 2651A
LINE FUSE
SLOWBLOW
5.0 A, 250 V
LINE RATING
100-240 VAC
50, 60 Hz
DIGITAL I/O
RS-232
500VA MAX.
IEEE-488 LAN
!
!
(on page B-19) before continuing to the current
Input
LO
SENSE/GUARD
S S
LO G G G G HI
NO INTERNAL OPERATOR SERVICEABLE PARTS,
WARNING: SERVICE BY QUALIFIED PERSONNEL ONLY.
REPLACE FUSE WITH SAME TYPE AND RATING. CHANNEL A
Amps
OUTPUT
LO HI
40V, 50A MAX.
!
HI
LO
2651A-901-01 Rev. A / March 2011