6
Performance Tests and Calibration
98
Keysight U1211A, U1212A, and U1213A User’s and Service Guide
Unsecuring the instrument
1
Press
Range/Auto
for more than 1 second while rotating the rotary switch to
~A
on the clamp meter to enter the Calibration Security Code entry mode.
2
The annunciator primary display will indicate “5555” and the annunciator
secondary display will indicate “SECU”.
3
Press
Range/Auto
again to edit and enter security code.
4
Press
or
(refer to
64) to step each character in the
code. Press
or
(refer to
64) to select each character.
5
Press
Hold/Max Min
when done. If the correct security code is entered, the
secondary display will indicate “PASS”.
Changing the instrument Calibration Security Code
1
When the meter is in the unsecured mode, press
Range/Auto
for more than
1 second to enter the Calibration Security Code setting mode.
2
The primary display shows the current security code and the secondary display
shows “CHG”
3
Press
or
to step each character in the code.
4
Press
or
to change each character in the code.
5
Press
Hold/Max Min
to store the new calibration security code. If the new
security code is successfully stored, the secondary display will indicate
“PASS”.
NOTE
The factory default calibration security code 1234 will be displayed on the
primary display if this is the first time to change the security code.