Model 2651A High Power System SourceMeter® Instrument Reference Manual
Appendix B: Calibration
2651A-901-01 Rev. A / March 2011
B-21
Calibration commands quick reference
The following table summarizes remote calibration commands. For a more complete description of
these commands, refer to Programming commands.
Calibration commands
Command Description
smua.cal.adjustdate = caldate
Set calibration adjustment date for Model 2651A.
smua.cal.date = caldate
Set calibration date (caldate of 0 indicates date not set).
smua.cal.due = caldue
Set calibration due date (caldue of 0 indicates date not set).
smua.cal.fastadc()
Performs calibration of the fast analog-to-digital converter (ADC).
smua.cal.lock()
Lock out calibration.
smua.cal.password = "newpassword"
Change password to "newpassword".
smua.cal.polarity = polarity
Set polarity:
smua.CAL_AUTO (automatic polarity).
smua.CAL_NEGATIVE (negative polarity).
smua.CAL_POSITIVE (positive polarity).
smua.cal.restore(calset)
Load calibration set of constants:
smua.CALSET_NOMINAL (nominal constants).
smua.CALSET_FACTORY (factory constants).
smua.CALSET_DEFAULT (normal constants).
smua.CALSET_PREVIOUS (previous constants).
smua.cal.save()
Store constants in nonvolatile memory as DEFAULT
calibration set .
calstate = smua.cal.state
Request calibration state:
smua.CALSTATE_CALIBRATING
smua.CALSTATE_LOCKED
smua.CALSTATE_UNLOCKED
smua.cal.unlock("password")
Unlock calibration (default password: KI0026XX)
smua.measure.calibratei(range,
cp1measured, cp1reference,
cp2measured, cp2reference)
Calibrate current measure range*:
±range (measurement range to calibrate).
cp1measured (Model 2651A measured value for cal. point 1).
cp1reference (reference measurement for cal. point 1).
cp2measured (Model 2651A measured value for cal. point 2).
cp2reference (reference measurement for cal. point 2).
