Keysight Technologies EPM-P Series Programming Manual page 251

Reset condition
On reset, automatic calibration is disabled.
Query
CALibration[1]|2:AUTO?
The query always returns a value of 0.
Error messages
– If the calibration was not carried out successfully the error -231, "Data
– If the command is set to ON the error -224, "Illegal parameter value" occurs.
– If there is no sensor connected, the error -241, "Hardware Missing" occurs.
Keysight EPM-P Series Programming Guide
Questionable; CAL ERROR" occurs. If you are using the E4417A the error
message specifies which channel the calibration failed on.
CALibration Subsystem 4
251