Keithley 2520, Service Manual, Page: 67 / 137

Model 2520 Pulsed Laser Diode Test System Service Manual Calibration 2-37
Step 8: Program calibration dates
Use the following commands to set the calibration date and calibration due date:
:CAL:PROT:DATE <yyyy>, <mm>, <dd> (Calibration date)
:CAL:PROT:NDUE <yyyy>, <mm>, <dd> (Next calibration due date)
Note that the year, month, and date must be separated by commas.
Step 9: Save calibration constants
Calibration is now complete. You can store the calibration constants in EEROM by
sending the following command:
:CAL:PROT:SAVE
NOTE Calibration will be temporary unless you send the SAVE command.
Step 10: Lock out calibration
To lock out further calibration, send the following command after completing the
calibration procedure:
:CAL:PROT:LOCK