Diagnostic Subsystem; Diag:lrns; Diagnostic:test:fulltest - HP 83751A Programming Manual

Diagnostic Subsystem

This returns a small string (that is, < 1 kbytes) of device specilic characters
that, when sent back to the sweeper, will restore the instrument state with
the exception of user ALC arrays. User Ale arrays will be zeroed out. Note
that this implies that the command to redigest the string is included in the
query response to DIAG:LRNS? Since we use SYST:SET <huge data block>
as our command to re-enter the learn string, then the DIAG:LRNS? response
begins with "SYST:SET . . . . . . . . ,,.

DIAGnostic:TEST:FULLtest?

This query command will execute all available self-tests in diagnostic test
subsystem. The instrument state is restored upon completion of self-test.
This is an IEEE 488.2 requirement for *TST which this is a synonym or an
alias of. The result is one of the following four values:
0 = Passed (no tests failed and at least one test passed)
1 = Failed (one or more tests failed)
2 = Skipped (all tests are skipped or can't do - doubtful )
3 = Can't Do (all tests are can't do - highly unlikely)
4 = Not Run
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