Keysight N1911A Programming Manual page 228

4 CALibration Subsystem
Reset Condition
On reset, automatic zeroing is disabled.
Query
CALibration[1]|2:ZERO:NORMal:AUTO?
The query always returns a value of 0.
Error Messages
– If zeroing was not carried out successfully the error –231, "Data Questionable;
– If this command is set to ON the error –224, "Illegal parameter value" occurs.
– If there is no sensor connected, or if a sensor other than an E9320 or P-Series
– If an E9320 sensor is connected and is not in NORMAL mode, the error –221
228
ZERO ERROR" occurs. If you are using a dual channel power meter, the error
message specifies which channel failed zeroing.
is connected, the error –241, "Hardware missing" occurs.
"Settings conflict" occurs.
N1911A/1912A P-Series Power Meters Programming Guide