Keithley 2635 Reference Manual

12-70 Return to Section Topics 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 smuX.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 Section 16 "Calibration".
Also see smuX.cal.restore, smuX.cal.save, smuX.makebuffer, smuX.measure.calibrateY

Keithley 2635 Specifications

General

Brand	Keithley
Model	2635
Category	Measuring Instruments
Language	English