Theory of Operation 8
16901A Logic Analysis System Service Guide 101
original state in which it was shipped. Refer to “To
restore the system software" on page 37 to know more
about the recovery process.
Self Test
The logic analyzer does very little self test unless it is
explicitly run by the user. As previously mentioned, the
system BIOS does some hardware self test before turning
control over to the operating system.
Once a user logs into the system and runs the logic analyzer
GUI application software, self tests can be run by clicking on
the "Help" menu within the application and then selecting
"Self Test".
All self tests are consolidated into a single self test dialog.
The self test dialog contains a pane which allows the user to
select the "test suite" and a pane which allows the user to
select a specific test within that suite – or all of the tests.
The tests can be run once or repetitively. Each card will
have its own suite of tests. The frame hardware itself has a
suite called "System".
At the bottom of the self test dialog is a results pane. The
reporting level (how verbose the tests are) can be controlled
using a slider bar at the top of the dialog. At the very least,
each test should report that it is running and what the final
status of each test was (pass or fail). Increasing the
reporting level and re- running certain tests may help isolate
a specific hardware failure in the event that a test fails.
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