Section 7: TSP command reference
2606B System SourceMeter® Instrument Reference Manual
7-194
2606B-901-01 Rev. B / May 2018
smuX.measure.calibrateY()
This function generates and activates new measurement calibration constants.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Function
Yes
Usage
smu
X
.measure.calibrate
Y
(
range
,
cp1Measured
,
cp1Reference
,
cp2Measured
,
cp2Reference
)
X
Source-measure unit (SMU) channel (for example,
smua.measure.calibratev()
applies to SMU channel A)
Y
SMU measurement function (
v
= voltage,
i
= current)
range
The measurement range to calibrate
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
This function generates and activates new calibration constants for the given range.
The positive and negative polarities of the instrument must be calibrated separately. Use a positive
value for
range
to calibrate the positive polarity and a negative value for
range
to calibrate the
negative polarity.
Typically, the two calibration points that are used are near zero for calibration point 1 and 90% of full
scale for calibration point 2.
All four measurements (
cp1Measured
,
cp1Reference
,
cp2Measured
, and
cp2Reference
) must
be made with the calibration set that is active. Corruption of the calibration constants may result if this
is ignored.
The new calibration constants are activated immediately but they are not written to nonvolatile
memory. Use
smu
X
.cal.save()
to save the new constants to nonvolatile memory. The active
calibration constants stay in effect until the instrument is power cycled or a calibration set is loaded
from nonvolatile memory with the
smu
X
.cal.restore()
function.
This function is disabled until a successful call to
smu
X
.cal.unlock()
is made.
Example
smua.measure.calibratev(1, 1e-4, 1e-5, 0.92, 0.903)
SMU channel A calibrates voltage measurement using the following values:
1 V calibration range
1e
−
4 for +zero measurement reading
1e
−
5 for +zero DMM measurement reading
0.92 for
+
FS measurement reading
0.903 for the
+
FS DMM measurement reading