Agilent Technologies N1911A Programming Manual page 236

4 CALibration Subsystem
• If the calibration was not carried out successfully the error –231, "Data
• If there is no sensor connected, the error –241, "Hardware Missing"
• If this command is set to ON and TRIGger[SEQuence[1]|2]:COUNt
• If this command is set to ON (for dual channel, at either measurement
208
P- Series power sensor is connected the error –241, "Hardware missing"
occurs.
Questionable; CAL ERROR" occurs. If you are using an N1912A the
error message specifies which channel failed calibration.
occurs.
is set to a value >1, the error –221, "Setting conflict" occurs.
channel) when a P- Series power sensor is connected (for dual channel,
at either measurement channel) and is in the wait- for- trigger state for
external trigger buffering, the error –224, "Illegal parameter value"
occurs.
N1911A/1912A P-Series Power Meters Programming Guide