Keithley 2651A Reference Manual page 720

Appendix B: Calibration
Model 2651A calibration steps
1
Function
Voltage source and measure
See Step 2. Voltage calibration
adjustment (on page B-23)
Current source and measure
See Step 3. Current calibration
adjustment (on page B-26)
Fast ADC
Contact check
1. Calibrate only the source for the SENSE_CALA sense steps and for the 100 A SENSE_LOCAL steps.
2. Steps must be performed in the order shown.
3. Do not use actual 0 values for zero calibration points. Use very small values such as ±1e-30. Calibration
polarities must also be set as shown in the procedures.
4. Output must be off before changing to the CALA sense mode.
5. The maximum DC level that can be used to calibrate 50 A and 100 A ranges is 20 A.
6. The 100 A current source range adjust improves dynamic (pulse) operation of the 50 A range.
"smua.source.rangei = 100" is valid only when calibration is unlocked.
B-20
Model 2651A High Power System SourceMeter® Instrument Reference Manual
2
Calibration steps Calibration
3
points
100 mV ±1e-30, ±90 mV
100 mV ±1e-30, ±90 mV
1 V ±1e-30, ±0.9 V
1 V ±1e-30, ±0.9 V
1 V ±1e-30, ±0.9 V
10 V ±1e-30, ±9 V
10 V ±1e-30, ±9 V
20 V ±1e-30, ±18 V
20 V ±1e-30, ±18 V
40 V ±1e-30, ±36 V
40 V ±1e-30, ±36 V
100 nA ±1e-30, ±90 nA
1 μA ±1e-30, ±0.9 μA
10 μA ±1e-30, ±9 μA
100 μA ±1e-30, ±90 μA
1 mA ±1e-30, ±0.9 mA
1 mA ±1e-30, ±0.9 mA
10 mA ±1e-30, ±9 mA
100 mA ±1e-30, ±90 mA
1 A ±1e-30, ±0.9 A
5 A ±1e-30, ±4.5 A
5 A ±1e-30, ±4.5 A
10 A ±1e-30, ±9 A
20 A ±1e-30, ±18 A
50 A ±1e-30, ±20 A
6
100 A ±1e-30, ±20 A
See Step 4. Fast ADC calibration adjustment
See Step 5. Contact check calibration adjustment
4
Sense mode
smua.SENSE_LOCAL
smua.SENSE_REMOTE
smua.SENSE_LOCAL
smua.SENSE_CALA
smua.SENSE_REMOTE
smua.SENSE_LOCAL
smua.SENSE_REMOTE
smua.SENSE_LOCAL
smua.SENSE_REMOTE
smua.SENSE_LOCAL
smua.SENSE_REMOTE
smua.SENSE_LOCAL
smua.SENSE_LOCAL
smua.SENSE_LOCAL
smua.SENSE_LOCAL
smua.SENSE_LOCAL
smua.SENSE_CALA
smua.SENSE_LOCAL
smua.SENSE_LOCAL
smua.SENSE_LOCAL
smua.SENSE_LOCAL
smua.SENSE_CALA
smua.SENSE_LOCAL
smua.SENSE_LOCAL
5
smua.SENSE_LOCAL
5
smua.SENSE_LOCAL
(on page B-30)
(on page B-31)
2651A-901-01 Rev. A / March 2011