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*TST?
Notes
Comments
Note
Chapter 6
*TST?
Self-Test. Causes an instrument to execute extensive internal self-tests and
returns a response showing the results of the self-test.
1. During the first 5 minutes after power is applied, *TST? may fail. Allow the
module to warm-up before executing *TST?.
2. Module must be screwed securely to mainframe.
3. The HP E1415 C-SCPI driver for MS-DOS® implements two versions of
*TST. The default version is an abbreviated self test that executes only the
Digital Tests. By loading an additional object file, you can execute the full
self test as described below. See the documentation that comes with the
HP E1415 C-SCPI driver for MS-DOS®.
•
Returned Value:
Value
0
-1
•
IF error 3052 'Self test failed. Test info in FIFO' is returned. A FIFO value of 1
through 99 or >=300 is a failed test number. A value of 100 through 163 is a
channel number for the failed test. A value of 200 through 204 is an A/D range
number for the failed test where 200=.0625, 201=.25V, 202=1V, 203=4V, and
204=16V ranges. For example DATA:FIFO? returns the values 72 and 108.
This indicates that test number 72 failed on channel 8.
Test numbers 20, 30-37, 72, 74-76, and 80-93 may indicate a problem with a
Signal Conditioning Plug-on.
For tests 20, and 30-37, remove all SCPs and see if *TST? passes. If so,
replace SCPs one at a time until you find the one causing the problem.
For tests 72, 74-76, and 80-93, try to re-seat the SCP that the channel
number(s) points to, or move the SCP and see if the failure(s) follow the SCP.
If the problems move with the SCP, replace the SCP.
These are the only tests where the user should troubleshoot a problem. Other
tests which fail should be referred to qualified repair personnel.
Executing *TST? returns the module to its *RST state. *RST causes the FIFO data
format to return to its default of ASC,7. If you want to read the FIFO for *TST?
diagnostic information and you want that data in other than the ASCII,7 format, be
certain to set the data FIFO format to the desired format (FORMAT command) after
IEEE-488.2 Common Command Reference
Meaning
*TST? OK
*TST? Error
Query the Error Queue (SYST:ERR?)
for error 3052. See explanation below.
HP E1415 Command Reference
Further Action
None
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