THOMSON Chipper Check II, Руководство пользователя, Страница: 32 / 38

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All 8 outputs high or low: There are 8 inputs, from the computer to the interface box, that
control 3 tri-state buffers inside the box and the 5 outputs that are connected to the chassis.
These 8 inputs can be toggled high or low. This test requires the technician to measure each
output to make sure it is high or low based on the test being run. Screen shots for this routine
are:
Check timing: The ‘Check Timing’ routine toggles the standby data line 200,000 times and
puts a 10 KHz square wave on the data line for 10 seconds. The cursor should change from
an arrow to an hourglass for approximately 10 seconds if the timing is correct.
There is also a diagnostic program called ChipFix.EXE that is installed with Chipper Check
that can be used to exercise all the inputs and outputs.