Introduction to Timing Analysis
Set Up the Trigger Specification
Set Up the Trigger Specification
Using the pattern term FF that you set in the previous exercise, you will now set up the analyzer to record the data after FF occurs on the eight channel bus.
1Highlight the 1 field in the Timing Sequence Levels box of the Trigger menu, and press the Select key.
2Highlight the field to the right of Trigger On, and press the Select key.
3Highlight term a and press the Done key.
4Highlight the field to the right of >, and turn the knob to select 16 ns for the pattern duration.
Setting the duration to 16 ns ensures that the analyzer will trigger when the counter on the training board is in a stable state. A shorter duration might cause the analyzer to trigger when the counter is transitioning.
5Press the Done key to close the Timing Sequence Level 1
The trigger term "a" has the hex value FF that you assigned to it.
The pattern duration is set to 16 ns. The value FF must be present for 16 ns before triggering.
| Setting Up the Trigger Specification |
Result | Your trigger specification now shows: Level 1 - TRIGGER on "a" > 16 ns. The |
| analyzer triggers when the term "a" (FF) is detected for a minimum duration |
| of 16 ns. |
|
|
|