Keithley 2601 Reference Manual page 467

Series 2600 System SourceMeter® Instruments Reference Manual
Step 5. Program calibration dates
Use the following command to set the calibration adjustment date (this is Model 2635 and
2636 only):
smua.cal.adjustdate = os.time{year=2005, month=1, day=1}
Optionally, it is possible to set the calibration date and calibration due date with the following
commands (this is required by models 2601, 2602, 2611 and 2612):
smua.cal.date = os.time{year=2005, month=1, day=1}
smua.cal.due = os.time{year=2006, month=1, day=1}
If you do not wish to set a calibration date or calibration due date, you can use the following
commands (this is model 2635 and 2636 only):
smua.cal.date = 0
smua.cal.due = 0
The actual year, month, day, and optionally hour, and minute should be used (seconds can be
given but will essentially be ignored due to the precision of the internal date storage format). The
allowable range for the year is from 2005 to 2037, the month is from 1 to 12, and the day is from
1 to 31.
Step 6. Save calibration constants
Calibration is now complete, so you can store the calibration constants in non-volatile memory by
sending the following command:
smua.cal.save()
Calibration just performed will be temporary unless you send the save command.
Step 7. Lock out calibration
To lock out further calibration, send the following command after completing the calibration
procedure:
smua.cal.lock()
Step 8. Repeat calibration procedure for Model 2602/2612/2636 Channel B
For the Models 2602, 2612, and 2636 only, repeat the entire procedure above for Channel B. Be
sure to:
• Make test connections to Channel B terminals.
• Substitute "smub" for "smua" in all commands.
2600S-901-01 Rev. C / January 2008 Return to Section Topics
Section 16: Calibration
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