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Performance Tests and Calibration 7
Agilent U1251A/U1252A User’s and Service Guide 129
To change the instrument calibration security code from the front
panel
1 When the multimeter is in the unsecured mode, press
for more than 1 second to enter the Calibration
Security Code setting mode.
2 The factory default calibration security code 1234 will be
displayed on the primary display.
3 Use the editing keys and to step each
character in the code.
4 Use the and to change each character in
the code.
5 Press (Save) to store the new calibration security
code.
6 If the new calibration security code has been successfully
stored, the secondary display will show PASS.