6-4
Error Messages
Querying the Error Queue
Querying the Error Queue
The queue query message is a request for the next entry from the instrument’s error queue. This queue
contains an integer that can range from
32768 to 32767. Negative error numbers are reserved by the SCPI
standard and are defined in this section. Positive error numbers are instrument-dependent. An error value
of zero indicates that no error or event has occurred.
The signal generator responds to the
SYSTem:ERRor? (or STATus:QUEue?) query using the following
form:
<error number>, <error description>
The <error number> is a unique error descriptor. Certain standard error numbers are described in this
sect
ion. The <error description> is a short description of the error, (optionally) followed by additional
information regarding the error. Short descriptions of the standard error numbers are described in this
section. The information that follows the error message may contain corrective actions that should be
followed to correct the error condition.
The <device-dependent info> section of the response may contain information which will allow you to
de
te
rmine the exact error and context. For example:
-131, Invalid suffix;FREQuency:CENT 2.0E+5 dBmV
The maximum string length of <error description> plus <device-dependent info> is 255 characters. The <error
de
scription> will be sent exactly as indicated in this document, including case.
If there has been no error, that is, if the queue is emp
ty, the signal generator will respond with:
0, No error
If there has been more than one error, the instrument will respond with the first one in its queue. Subsequent
respo
nses to SYSTem:ERRor? will continue with the queue until it is empty.
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