19-114 Return to Section Topics 2600AS-901-01 Rev. B / September 2008
Section 19: Remote Commands Series 2600A System SourceMeter® Instruments Reference Manual
smuX.measure.calibrateY
X = SMU channel (a or b)
Y = SMU measure function (v or i)
Where: v = voltage, i = current
Function Generates and activates new measurement calibration constants.
TSP-Link
accessibility
This function can be accessed from a remote TSP-Link node.
Usage smuX.measure.calibratev(range, cp1measured, cp1reference, cp2measured,
cp2reference)
smuX.measure.calibratei(range, cp1measured, cp1reference, cp2measured,
cp2reference)
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 measured
externally.
Remarks • 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 used will be 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 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
nonvolatile 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 nonvolatile 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 20.
Also see smuX.cal.restore, smuX.cal.save, smuX.makebuffer, smuX.source.calibrateY
smuX.measure.count
X = SMU channel (a or b)
Attribute Number of measurements performed when a measurement is requested.
Default 1
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage count = smuX.measure.count -- Reads measure count.
smuX.measure.count = count -- Writes measure count.
count Number of measurements.
Remarks • This attribute controls the number of measurements taken any time a measurement is
requested. When using a reading buffer with a measure command, the count also controls the
number of readings to be stored.
• The reset function sets the measure count to 1.
Details See Section 8.
Also see smuX.measure.overlappedY, smuX.measure.Y
Example Sets measure count for SMU A:
smua.measure.count = 10
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