You can store a message of up to 40 characters in calibration memory. For example, you could store the date of the last calibration, the date the next calibration is due, or the name and phone number of the person responsible for calibration.
To read the calibration message, press Utility > Test/Admin > Calibrate or send CALibration:STRing? from the remote interface.
To change the calibration message, unsecure the instrument and press Utility > Test/Admin > Calibrate > Edit Cal String or send CALibration:STRing "<string>" from the remote interface.