12-70
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2600S-901-01 Rev. C / January 2008
Section 12: Instrument Control Library
Series 2600 System SourceMeter® Instruments Reference Manual
smuX.source.calibrateY
X = SMU channel (a or b)
Y = SMU measure function (v or i)
where v = voltage, i = current
Function
Generates and activates new source calibration constants.
Usage
s
muX.source.calibrateY(range, cp1expected, cp1reference,
cp2expected, cp2reference)
range
The measurement range to calibrate.
cp1expected
The source value programmed for calibration
point 1.
cp1reference
The reference measurement for calibration
point 1 as
measured externally.
cp2expected
The source value programmed for calibration
point 2.
cp2reference
The reference measurement for calibration
point 2 as measured externally.
Remarks
• This function generates and activates new calibration constants for the given range. The
positive and negative polarities of the source 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. Full scale for calibration point 2 should be avoided if
the SMU’s source is substantially out of calibration.
• Do not use 0.0 for a negative calibration point as 0.0 is considered a positive number.
• The two reference measurements must be made with the source using the active
calibration set. For example, source a value, measure it, and do not change the active
calibration set before issuing this command.
•
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
"Calibration".
Also see
,
,