Keysight E4980A User Manual page 437

Error Messages
Warning Messages
The correction function does not work because the MULTI correction mode is
used but the test frequency is not equal to the spot frequency.
I
Improper high/low limits
The upper limit value is less than the lower limit value. Set the lower limit value
to less than the upper limit value.
Incompatible state file
The setting file recalled from a USB memory device has been saved using an
E4980A/AL with a different firmware version or different options. There may be
some parameters set up incorrectly. Check the setting.
This message may appear when the connection status of the 42841A is
different from the one when it has been saved.
S
Signal source overload
The test signal current exceeds a value shown in Table 11-6. The measurement
data is not guaranteed to be valid. The measurement result data status of the
measurement result output is set to 3. Reduce the test signal level so that the
test signal current doesn't exceed a value shown in Table 11-6.
Signal source overvoltage
The signal source voltage exceeds its limit. Lower the voltage setting of the
signal source.
Keysight E4980A/AL User's Guide -437