Keysight U1253B Guide D'utilisation Et De Maintenance page 183

6 Performance Tests and Calibration
Figure 6-4
182
Press or
to select digit
Press
or
to edit selected digit
Press Save when done
Security code is correct
The word "PASS" appears
for 3 seconds, then proceeds
to the first calibration item
Unsecuring the instrument for calibration
Error message appears
for 3 seconds
Incorrect
security
code
Keysight U1253B User's and Service Guide