Keysight 34972A - Page 200

4 Features and Functions
200 Keysight 34970A/34972A User’s Guide
To secure against calibration
You can secure 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:
SECURE CAL
When you enter the Utility menu, the calibration entries toggle between CAL
UNSECURED and SECURE CAL. To secure the instrument, select SECURE
CAL and press . After entering the desired security code, press
again. When you return to the menu, you will see new choices CAL SECURED
and UNSECURE CAL.
– Remote Interface Operation: To secure the instrument, send the following
command with the desired security code.
CAL:SECURE:STATE ON,KT034970
To change the security code
To change the security code, you must first unsecure the instrument, and then
enter a new code. Make sure you have read the security code rules described on
page 198 before attempting to change the security code.
– Front-Panel Operation: To change the security code, first make sure that the
instrument is unsecured. Go to the SECURE CAL entry, enter the new
security code, and press (the instrument is now secured with the new
code). Changing the code from the front panel also changes the code as seen
from the remote interface.
– Remote Interface Operation: To change the security code, first unsecure the
instrument using the old security code. Then, enter the new code as shown
below.
CAL:SECURE:STATE OFF, KT034970 Unsecure with old code
CAL:SECURE:CODE ZZ007943 Enter new code