To Change The Calibration Security Code - Keysight U1242C Service Manual

1 Calibration Procedures

To change the calibration security code

This feature allows you to enter a security code to prevent accidental or
unauthorized calibration of the multimeter. The multimeter will be secured
automatically after power off. Ensure you unsecure the multimeter by entering the
correct security code before you adjust or calibrate the multimeter.
1 Press
2 Set your new calibration security code by entering any four digits ranging from
3 Press
4 Press
5 Record down your new calibration security code and store it in a safe location.
6 Exit the unsecured mode by pressing both
See
38
View
for more than 1 second to enter the Changing Security Code
Shift
Esc
(CSC) mode while the multimeter is unsecured (rEF mode).
as the existing security code.
to .
MaxMin
– Press or
Hz
respectively.
Vsense
– Press or
Log
to save the new calibration security code.
Hold
If the new calibration security code has been successfully changed,
appear briefly, after which the multimeter will enter the adjustment mode.
If the incorrect security code is entered, an error code will appear briefly, after
which the multimeter will prompt you for the security code again.
View
for more than 1 second again if you wish to discard the change.
Shift
Esc
more than 1 second to secure the multimeter again.
Figure 1-6 for the multimeter's display.
Auto
to move the cursor to the left or right
Range
to increment or decrement the digit respectively.
Keysight U1241C/U1242C Service Guide
Log View
and
Shift
Hold
Esc
will be shown
will
together for