Keithley 2600B User Manual

Section
7: TSP command reference Series 2600B System SourceMeter® Instrument
Reference Manual
7-202 2600BS-901-01 Rev. C / August 2016
Example
smua.cal.password = "LetMeIn"
Assigns a new calibration password for SMU channel A.
Also see
Adjustment (on page B-18)
smuX.cal.unlock() (on page 7-205)
smuX.cal.polarity
This attribute controls which calibration constants are used for all subsequent measurements.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW)
Yes
Instrument reset
SMU reset
SMU cal. lock
Recall setup
Not saved
0 (smuX.CAL_AUTO)
Usage
calPolarity = smuX.cal.polarity
smuX.cal.polarity = calPolarity
calPolarity
The polarity to use for measurements. Set to one of the following values:
0 or smuX.CAL_AUTO: Automatic polarity detection
1 or smuX.CAL_POSITIVE: Measure with positive polarity calibration constants
2
or
smu
X
.CAL_NEGATIVE
: Measure with negative polarity calibration constants
X
SMU channel (for example,
smua.cal.polarity
applies to SMU channel A)
Details
This attribute controls which polarity calibration constants are used to make all subsequent
measurements. This attribute does not affect the smuX.measure.calibrateY() or
smuX.source.calibrateY() commands. The polarity for those commands is dictated by the
range parameter that is given to the command. The measurement calibration commands require the
measurements provided to have been made using the polarity being calibrated.
When making measurements for calibration points far away from zero, the desired polarity constants
are inherently used. However, when making measurements near zero, it is possible that the
instrument could use the calibration constants from the wrong polarity. Setting smuX.cal.polarity
to positive or negative forces measurements to be made using the calibration constants for a given
polarity, rather than basing the choice on the raw measurement data.
This attribute can only be set to positive or negative when calibration is unlocked. This attribute will
automatically be set to smuX.CAL_AUTO when calibration is locked.
Example
smua.cal.polarity = smua.CAL_POSITIVE
Selects positive calibration constants for all
subsequent measurements on SMU channel A.

Keithley 2600B Specifications

General

Brand	Keithley
Model	2600B
Category	Measuring Instruments
Language	English