Keysight Technologies 34450A Programmer's Reference Manual page 54

2 SCPI Programming
The calibration security setting is stored in non-volatile memory, and does not change when power
has been off or after a Factory Reset
Return Format
The query command returns "0" (OFF) or "1" (ON) indicating the current calibration security setting.
Examples
The following command will unsecure the instrument using the factory default security code.
CAL:SEC:STAT OFF,AT34450
The following query returns the current calibration security setting.
CAL:SEC:STAT?
Typical Response: 0
See Also
CALibration:SECure:CODE
54
(*RST command).
Keysight 34450A Programmer's Reference