Keysight E36731A Manuel D'instructions page 142

Utilities Menu - Error
Error displays the instrument's error queue, which includes up to 20 errors. If there are more than 10 errors on the
display, press Next to scroll to the next page.
– Errors are stored in the order they are received. The error at the end of the list is the most recent error.
– If there are more than 20 errors in the queue, the last error stored is replaced with -350,"Queue overflow". No
more errors are stored until you remove errors from the queue. If there are no errors, the instrument responds
with +0,"No error".
– Except for self-test errors, errors are cleared when exiting the Error Log menu or when cycling power.
If you suspect that there is a problem with the instrument, refer to "Troubleshooting" in the Service Guide.
142 Keysight E36731A User's Guide