*TST?
Syntax
Definition
Related Commands
Example
Results
Self- test query.
The self-test query commands the instrument to perform a self-test
and place the results of the test in the output queue.
Returned value: 0
5
value
5
256.
A value of zero indicates no errors.
A non-zero result places one or more errors in the error queue.
No further commands are allowed while the test is running.
The instrument is returned to the setting that was active at the time
the self-test query was processed.
The self-test does not require operator interaction beyond sending
the
*TST? query.
None.
OUTPUT 70911
;
"*TST?"
ENTER
709
11
;
A$
PRINT
;A$
The *TST? response consists of one byte. The significance of each bit
is illustrated below.
Bit
Bit 0
(1)
Bit
1
(2)
Bit
2
(4)
Bit
3
(8)
Bit 4 (16)
Meaning
ROM test failed. The signature word in the ROM
stored there at manufacture does not match the one
generated at test time.
RAM test failed. Not all RAM cells can be written
and/or read properly.
Device bus test failed. It is not possible to access the
instruments hardware properly.
Software timer test failed. The 10 ms interrupt signal
used for software scheduling purpose is missing or the
period of the signal (compared indirectly to the
pP
processor clock) is out of tolerance. ATTENTION
:
this test is not done in the initial power up self test.
Sweep timer test failed. The
1
ms interrupt signal
used during equi
-
(start freq.
=
stop freq.) or
logarithmic sweeps is missing, or the period of the
signal (compared indirectly to the
pP
processor
clock) is out of tolerance. ATTENTION
:
this test is
not done in the initial power up self test.
5-46
Command Reference
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