3 Features and Functions
122 Keysight 34420A User’s Guide
To Unsecure for Calibration You can unsecure the meter for calibration either
from the front panel or remote interface. The meter is secured when shipped from
the factory, and the security code is set to “KT034420”.
– Front-panel operation:
If the meter is secured, you will see the above command when you go into the
CAL MENU. (If you move across the “commands” level in the menu, you will
notice that the “2: CALIBRATE” command is “hidden” if the meter is secured.)
To unsecure the meter, select the “parameter” level of the SECURED
command, enter the security code, then press Enter.
When you go to the “commands” level in the CAL MENU again, you will notice
that the meter is unsecured. Notice also that the 2: CALIBRATE command is no
longer hidden and you can perform a calibration.
– Remote operation: use the following command:
CALibration:SECure:STATe {OFF|ON},<code>
To unsecure the meter, send the above command with the same code used to
secure. For example,
CAL:SEC:STAT OFF, KT034420
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