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Triggering Examples
Single-Machine Trigger Examples
To test minimum and maximum pulse limits
1Go to the timing analyzer’s Trigger menu.
2Define the Edge1 term to represent the positive-going transition,
and define the Edge2 term to represent the negative-going
transition on the line with the pulse to be tested.
You can rename these terms to POS_EDGE and NEG_EDGE.
3Define the Timer1 term to represent the minimum pulse width,
and the Timer2 term to represent the maximum pulse width.
You can rename these terms to MIN_WID and MAX_WID. In this
example, Timer1 was set to 496 ns and Timer2 was set to 1 ms. Both
timers start when sequence level 2 is active.
4Under Timing Sequence Levels, enter the following sequence
specification:
•Find "POS_EDGE" Occurs "1" Else on "no state" go to level "1"
•Then find "NEG_EDGE" Occurs "1" Else on "no state" go to level "2"
You will need to start both timers upon entering this second state. You
do this using the Timer Control field in the menu for sequence level 2.
•TRIGGER on "MIN_WID 496 ns + MAX_WID 1.00 ms" Occurs "1" Else on
"anystate" go to level "1"