Front-Panel Operation 2
Keysight 34420A Service Guide 71
The security code is set to “KT34420” when the meter is shipped from the factory.
The security code is stored in non-volatile memory and does not change when the
power has been off or after a remote interface reset.
To enter the security code from the front panel, enter only the six digits. To enter
the security code from the remote interface, you may use up to 11 characters.
Use the arrow keys to move left or right between digits. Use the up or down arrow
keys to change the digits.
Additional information about the calibration security feature is given on page 91.
To re-secure the meter (following calibration), perform this procedure again.
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