Features and Functions 3
Keysight 34420A User’s Guide 123
To Secure Against Calibration You can secure the meter against 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”.
Be sure to read the security code rules on page 121 before attempting to secure
the meter.
– Front-panel operation:
If the meter is unsecured, you will see the above command when you go into
the CAL MENU. To secure the meter, select the “parameter” level of the
UNSECURED command, enter the security code, then press Menu Enter.
When you go to the “commands” level in the CAL MENU again, you will notice
that the meter is secured. Notice also that the 2: CALIBRATE command is now
hidden and you cannot perform a calibration.
– Remote operation: use the following command:
CALibration:SECure:STATe {OFF|ON},<code>
To secure the meter, send the above command with the same code as used to
unsecure. For example,
CAL:SEC:STAT ON, KT034420
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