84 N9030B PXA Signal Analyzer Service GuideInstrument MessagesIntroductionEvent and Condition CategoriesThe three categories of severity are described below, for both Events andConditions.Errors Error messages appear when a requested operation has failed. (For example, “Detector notavailable”, “File not saved”.) Error messages are often generated during remote operation when aninvalid programming command has been entered. (For example, “Undefined header”.)Some errors are conditions rather than single events. They exist for a period of time, so they haveassociated “Detected” and “Cleared” events. (For example, “LO Unlocked” or “External referenceout of range”)Error messages appear in the Status Panel at the bottom of the display. A message remains untilyou press a key, or another message is displayed in its place.Error messages are logged in the error queues. If the error is a condition, both the Detected andCleared events are logged.Warnings Warning messages appear when a requested operation has completed successfully, but there aremodifications and/or side effects. (For example, if you requested too high a stop frequency, then“Data out of range” is displayed and the analyzer sets itself to the highest available stopfrequency.)Some warnings are conditions rather than single events. They exist for a period of time, so theyhave a “Detected” event and a “Cleared” event. (For example, if you set the sweep time too fast fora measurement to meet the instrument specifications then the “Meas Uncal” message is displayeduntil you slow down the sweep time.)Warning messages appear in the Status Panel at the bottom of the display. The message remainsuntil you press a key, or another message is displayed in its place.Warnings are logged in the error queues. If the warning is a condition, both the Detected andCleared event messages are logged.
