EXFO FTB-2 Pro User Manual page 416

IEEE 488.2 and Specific Command Reference
IEEE 488.2 Required Commands
Description
Syntax
Parameter(s)
Response Syntax
Response(s)
Example(s)
404
The *TST? query causes an internal self-test and
places a response into the Output Queue
indicating whether or not the device completed
the self-test without any detected errors. Upon
successful completion of *TST?, the device
settings is restored to their values prior to the
*TST?.
*TST?
None
<Result>
Result:
The response data syntax for <Result> is
defined as a <NR1 NUMERIC RESPONSE DATA>
element.
The <Result> value ranges from -32767 through
+32767.
A <Result> with a value of zero indicates that
the self-test has been completed without errors
detected. A <Result> with a value not equal to
zero indicates that the self-test was not
completed or was completed with errors
detected.
*TST? returns 0
(self-test was completed with success)
*TST?
FTB-1v2 and FTB-1v2 Pro