Section 7: TSP command reference
Model 2657A High Power System SourceMeter® Instrument Reference Manual
7-182
2657A-901-01 Rev. B/December 2012
Details
This function disables functions that can change calibration settings. Before you can lock calibration, the
calibration constants must be written to nonvolatile memory or a previous calibration set must be restored. Error
code 5012, "Cal data not saved - save or restore before lock," will result if this function is called when the
calibration state is
smu
X
.CALSTATE_CALIBRATING
.
Example
smua.cal.lock()
Disables calibration functions for SMU channel A.
Also see
(on page B-14)
(on page 7-184)
(on page 7-185)
(on page 7-186)
smuX.cal.ovp()
This function performs calibration of the overvoltage protection limit (OVP).
Type
TSP-Link accessible
Affected by
Where saved
Default value
Function
Yes
Usage
smu
X
.cal.ovp()
X
Source-measure unit (SMU) channel (for example,
smua.cal.ovp()
specifies
SMU channel A)
Details
This function automatically performs all the steps required to calibrate the overvoltage protection (OVP) limit
circuit. Since this function uses the readings obtained during calibration of the measure ranges, make sure
voltage calibration has been completed before calling this function.
Example
smua.cal.ovp()
Performs OVP calibration for SMU Channel A.
Also see
(on page B-14)
(on page 7-196)
smuX.cal.password
This attribute stores the password required to enable calibration.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (W)
Yes
Not applicable
SMU nonvolatile
memory
"KI0026XX"
Summary of Contents for 2657A
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