Keysight E8267D User Manual page 343

Troubleshooting
Error Messages
Execution errors are reported after rounding and expression evaluation
operations are completed. Rounding a numeric data element, for example, is
not reported as an execution error.
Command Errors (–199 to –100) indicate that the instrument's parser
detected an IEEE 488.2 syntax error. Errors in this class set the command error
bit (bit 5) in the event status register (IEEE 488.2, section 11.5.1). In this case:
— Either an IEEE 488.2 syntax error has been detected by the parser (a
— an unrecognized header was received. These include incorrect
Keysight E8357D/67D & E8663D PSG User's Guide
control–to–device message was received that is in violation of the IEEE
488.2 standard. Possible violations include a data element that violates
device listening formats or whose type is unacceptable to the device.), or
device–specific headers and incorrect or unimplemented IEEE 488.2
common commands.
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