Section 7: Command reference Model 2651A High Power System SourceMeter® Instrument Reference Manual
7-182 2651A-901-01 Rev. A / March 2011
Example
smua.cal.unlock("KI0026XX")
Unlocks calibration for SMU channel A.
Also see
smuX.cal.lock() (on page 7-177)
smuX.cal.password
(on page 7-177)
smuX.cal.state
(on page 7-180)
Adjustment
(on page B-16)
smuX.contact.calibratehi()
This function calibrates the high/sense high contact check measurement.
Type TSP-Link accessible
Affected by Where saved Default value
Function Yes
Usage
smuX.contact.calibratehi(cp1Measured, cp1Reference, cp2Measured, cp2Reference)
X
Source-measure unit (SMU) channel (for example,
smua.contact.calibratehi() applies to SMU channel A)
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
Details
Contact check measurement calibration does not require range information.
Typically, calibration points one and two will be near 0 Ω and 50 Ω, respectively.
All four measurements (cp1Measured, cp1Reference, cp2Measured, and cp2Reference) must be made
with the active calibration set. If not, corruption of the calibration constants may result.
The new calibration constants will be activated immediately but are not written to nonvolatile storage. Use
smuX.cal.save() to save 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 nonvolatile storage with the
smuX.cal.restore() function.
This function will be disabled until a successful call to smuX.cal.unlock() is made.
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