HP E4418B User Manual page 161

Errors are retrieved in a first in first out (FIFO) order. If more than 30
errors occur, the error queue overflows and the last error in the queue is
replaced with error -350, "Queue Overflow". Any time the queue
overflows the most recent error is discarded.
Once the errors are read they are removed from the error queue. This
opens a position at the end of the queue for a new error message, if one is
subsequently detected. When all errors have been read from the queue,
further error queries return +0, "No errors".
To delete all the errors in the queue from the front panel press:
System
• ,
More
Inputs
To delete all the errors in the queue remotely use:
• the *CLS (clear status) command.
The error queue is also cleared when the instrument power has been
switched off.
HP E4418B User's Guide
, then
Error List
Error Messages
Introduction
.
Clear Errors
4-3