Series 2600 System SourceMeters Reference Manual Instrument Control Library 12-65
Return to Section 12 topics 2600S-901-01 Rev. A / May 2006
smuX.cal.unlock
X = SMU channel (a or b)
Function Enables the commands that change calibration settings.
Usage
smuX.cal.unlock(password)
password Calibration password.
Remarks
• This function enables the calibration functions to change the calibration settings.
• The password when the unit is shipped from the factory is “KI0026XX”.
Details See Section 16 (calibration).
Also see smuX.cal.password
Example
Unlocks calibration for SMU A:
smua.cal.unlock("KI0026XX")
smuX.contact.calibratelo
X = SMU channel (a or b)
Function Calibrate the low/sense low contact check measurement.
Usage smuX.contact.calibratehi(cp1measured, cp1reference,
cp2measured, cp2reference)
cp1measured -- the value measured by this SMU for calibration point 1.
cp1reference -- the reference measurement for calibration point 1 as measured
externally.
cp2measured -- the value measured by this SMU for calibration point 2.
cp2reference -- the reference measurement for calibration point 2 as measured
externally.
Remarks
• Contact check measurement calibration does not require range information.
• Typically the two calibration points used will be near 0Ω for calibration point 1 and
50Ω for calibration point 2.
• All four measurements (cp1measured, cp1reference, cp2measured, and
cp2reference) must be made with the active calibration set. Corruption of the
calibration constants may result if this is not heeded.
• The new calibration constants will be activated immediately but they will not be
written to non-volatile storage. Use smuX.cal.save to commit the new constants
to nonvolatile storage. The active calibration constants will stay in effect until the
instrument is power cycled or a calibration set is loaded from non-volatile storage
with the smuX.cal.restore function.
• This function will be disabled until a successful call to smuX.cal.unlock is made.
Details See Section 16 (calibration).
Also see smuX.contact.calibratehi
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