Performance Tests and Calibration 6
Keysight U1253B User’s and Service Guide 181
5 Press or to choose which digit to edit, and press or to edit the
value.
6 Press (Save) when done.
7 If the correct security code is entered, the upper left corner of the secondary
display will show the word “PASS” for 3 seconds.
8 If the incorrect security code is entered, an error code will be displayed instead
for 3 seconds, after which the Calibration Security Code entry mode will
appear again.
Please refer to Figure 6-4 on page 182.
To secure the instrument again (exit the unsecured mode), press and
simultaneously.
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