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As an example, suppose you configure the present for field as shown:
This configuration tells the timing analyzer to look for a certain pattern
specified by you that has a duration of greater than 50 ns. Once the timing
analyzer has found the pattern, it can look for the trigger.
Choosing < (less than) forces glitch and edge triggering off, and the
timing analyzer triggers immediately at the end of the pattern that meets
the duration requirements. The fields with which you specify edges and
glitches don’t appear in the menu. For instance, if you configure the
present for field as shown:
The analyzer will trigger when the specified pattern has a duration less
than 100 ns. The pattern must also be valid for at least 20 ns.
Figure 5-41. Example of Pattern > 50 ns
Figure 5-42. Example of Pattern Duration < 100 ns
Menus HP 16510B
5-38 Front-Panel Reference