Error Commands
WFM 601A, WFM 601E & WFM 601M User Manual C–31
Error Commands
The waveform monitor detects errors and records error messages in an error
message buffer. To determine whether an error has been recorded, send the query
ESR?. If an error has been detected, the waveform monitor will respond with a
message similar to :ESR 32. To get more information about the error, send the
query ALLEV?. The response to the ALLEV? query will be similar to one of the
error message types described in Table C–9.

ESR?

This query determines if the waveform monitor has recorded any command
errors. If ESR? returns an error, use the ALLEV? query to determine the type of
error recorded. Table C–9 describes possible error messages displayed by the
waveform monitor.
ESR?
None
esr?
esr?
:ESR 32
See Table C–9 for a list of possible command error reports returned by the
ALLEV? query.

ALLEV?

This query is used to determine the type of command error reported by the
waveform monitor. Table C–9 describes a list of possible error messages returned
by ALLEV?. To use ALLEV?, query using ESR? to determine whether the
waveform monitor has recorded any command errors. If an error was detected,
use ALLEV? to help you determine the possible cause of the error.
Syntax
Arguments
Examples
Returns