Error Queue - Agilent Technologies Infiniium 90000 Series Programmer's Manual

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Error Messages

Error Queue

As errors are detected, they are placed in an error queue. This queue is
first in, first out. If the error queue overflows, the last error in the queue
is replaced with error - 350, "Queue overflow." Anytime the error queue
overflows, the oldest errors remain in the queue, and the most recent
error is discarded. The length of the oscilloscope's error queue is 30 (29
positions for the error messages, and 1 position for the "Queue overflow"
message).
Reading an error from the head of the queue removes that error from the
queue, and opens a position at the tail of the queue for a new error. When
all errors have been read from the queue, subsequent error queries return
0, "No error."
The error queue is cleared when any of the following occur:
• the instrument is powered up,
• a *CLS command is sent,
• the last item from the queue is read, or
• the instrument is switched from talk only to addressed mode on the
1008
front panel.
Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference