Appendix B: Calibration
Model 2651A High Power System SourceMeter® Instrument Reference Manual
B-20
2651A-901-01 Rev. A / March 2011
Model 2651A calibration steps
Function
1
Calibration
steps
2
Calibration
points
3
Sense mode
4
Voltage source and measure
(on page B-23)
100 mV
±1e-30, ±90 mV
smua.SENSE_LOCAL
100 mV
±1e-30, ±90 mV
smua.SENSE_REMOTE
1 V
±1e-30, ±0.9 V
smua.SENSE_LOCAL
1 V
±1e-30, ±0.9 V
smua.SENSE_CALA
1 V
±1e-30, ±0.9 V
smua.SENSE_REMOTE
10 V
±1e-30, ±9 V
smua.SENSE_LOCAL
10 V
±1e-30, ±9 V
smua.SENSE_REMOTE
20 V
±1e-30, ±18 V
smua.SENSE_LOCAL
20 V
±1e-30, ±18 V
smua.SENSE_REMOTE
40 V
±1e-30, ±36 V
smua.SENSE_LOCAL
40 V
±1e-30, ±36 V
smua.SENSE_REMOTE
Current source and measure
(on page B-26)
100 nA
±1e-30, ±90 nA
smua.SENSE_LOCAL
1
μ
A ±1e-30,
±0.9
μ
A
smua.SENSE_LOCAL
10
μ
A ±1e-30,
±9
μ
A
smua.SENSE_LOCAL
100
μ
A ±1e-30,
±90
μ
A
smua.SENSE_LOCAL
1 mA
±1e-30, ±0.9 mA
smua.SENSE_LOCAL
1 mA
±1e-30, ±0.9 mA
smua.SENSE_CALA
10 mA
±1e-30, ±9 mA
smua.SENSE_LOCAL
100 mA
±1e-30, ±90 mA
smua.SENSE_LOCAL
1 A
±1e-30, ±0.9 A
smua.SENSE_LOCAL
5 A
±1e-30, ±4.5 A
smua.SENSE_LOCAL
5 A
±1e-30, ±4.5 A
smua.SENSE_CALA
10 A
±1e-30, ±9 A
smua.SENSE_LOCAL
20 A
±1e-30, ±18 A
smua.SENSE_LOCAL
50 A
±1e-30, ±20 A
5
smua.SENSE_LOCAL
100 A
6
±1e-30, ±20 A
5
smua.SENSE_LOCAL
Fast ADC
Step 4. Fast ADC calibration adjustment
(on page B-30)
Contact check
Step 5. Contact check calibration adjustment
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.
