Keithley 2600a series, Reference Manual, Page: 427 / 696

2600AS-901-01 Rev. B / September 2008 Return to Section Topics 19-105
Series 2600A System SourceMeter® Instruments Reference Manual Section 19: Remote Commands
smuX.cal.lock X = SMU channel (a or b)
Function Disables commands that change calibration settings.
TSP-Link
accessibility
This function can be accessed from a remote TSP-Link node.
Usage
smuX.cal.lock()
Remarks • This function will disable the calibration functions that can change the calibration settings. It is an
error to call this function while the calibration state is
smuX.CALSTATE_CALIBRATING
. The
calibration constants must be written to nonvolatile memory, or a previous calibration set must be
restored prior to locking calibration.
Details See Calibration in Section 20 .
Also see
smuX.cal.restore , smuX.cal.save , smuX.cal.state
Example Disable calibration functions for SMU A:
smua.cal.lock()
smuX.cal.password X = SMU channel (a or b)
Attribute Password to enable calibration.
Default “KI0026XX”
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
smuX.cal.password = newpassword
newpassword
The new password (string).
Remarks • A new password can only be assigned when calibration has been unlocked.
• The calibration password is write-only and cannot be read.
Details See Calibration in Section 20 .
Example Assign a new calibration password for SMU A:
smua.cal.password = "LetMeIn"