Features and Functions 4
Keysight 34970A/34972A User’s Guide 199
To unsecure for calibration 
You can unsecure the instrument either from the front panel or over the remote 
interface. The instrument is secured when shipped from the factory and the 
security code is set to “KT034970” or “KT034972”, depending on the product 
number. 
– Once you enter a security code, that code must be used for both front-panel 
and remote operation. For example, if you secure the instrument from the front 
panel, you must use that same code to unsecure it from the remote interface. 
– Front-Panel Operation: 
UNSECURE CAL
 
When you first enter the Utility menu, the calibration entries toggle between 
CAL SECURED and UNSECURE CAL. To unsecure the instrument, select 
UNSECURE CAL and press   . After entering the correct security code, 
press   again. When you return to the menu, you will see new choices CAL 
UNSECURED and SECURE CAL. 
– Remote Interface Operation: To unsecure the instrument, send the following 
command with the correct security code.
 
CAL:SECURE:STATE OFF,KT034970
If you enter the wrong secure code, NO MATCH is displayed and a new choice, 
EXIT, is shown.