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8 Then Find Edge With the Then find Edge fields you can specify the edges (transitions) of
your data on which your timing analyzer triggers. You can specify a
positive edge, a negative edge, or either edge. Each label has its own edge
trigger specification field so that you can specify an edge on any channel.
When you specify an edge on more than one channel, the timing analyzer
logically ORs them together to look for the trigger point. That is, it
triggers when it sees any one of the edges you specified. It also ANDs the
edges with the pattern you specified in the Find Pattern fields. The logic
analyzer triggers on an edge following the valid duration of the pattern
while the pattern is still present.
Tospecifyanedge,touchoneoftheThen find Edge fields. You will see
a pop-up similar to that shown below.
The top row of periods and arrows in your pop-up may look different than
this depending on the number of channels you assigned to the label. Each
period in the pop-up indicates that no edge is specified for that channel.
To specify a negative edge, place the cursor on one of the periods in the
pop-up and touch the ↓. The period changes to ↓. To specify a positive
edge, touch the ↑. The period changes to ↑.
If you want the analyzer to trigger on either a positive or a negative edge,
touch the . The period changes to .
Figure 5-43. Specify Edge Pop-up for Then Find
HP 16510B Menus
Front-Panel Reference 5-39