4 Triggering
146 InfiniiVision Oscilloscopes User’s Guide
5 If you select an edge term, one channel must be set to a rising edge or a falling edge.
All other channel edges will be set to don’t care (X).
a Press the Channel softkey (or rotate the Entry knob) to select the channel.
As you select a channel, the channel is highlighted in the selected pattern list
shown in the waveform area.
b Then press
the X softkey to select rising edge or falling edge. All other
channels will be defaulted to don’t care (X).
If you want to reassign an edge to a different channel, repeat the above step. The
value of the original channel edge will be defaulted to X (don't care).
Define the “Trigger on” Stage
1 Press the Stage softkey and select Trigger on:.
Trigger on: is the next stage in the trigger sequence. When you select the Stage
Trigger on: softkey, the next softkey to the right will display Trigger: and give you a list
of the terms you can define for the Trigger on: stage. The Trigger on: stage can be set
to one of the following conditions:
• Pattern 2 Entered — A pattern is entered on the last edge that makes the pattern
true (logical AND).
• Pattern 2 Exited — A pattern is exited on the first edge that makes the pattern
false (logical NAND).
• Edge 2
• Pattern 2 and Edge 2
• Nth Edge 2
• Nth Edge 2 (no re-find)
2 Press the Trigger: softkey and select a stage to trigger on.
3 To define the term(s) used in the Trigger on: stage, press the Ter m softkey and select
the pattern or edge term displayed in the Trigger: softkey.
If the term(s) used in the “Find:” Sequence Stage condition are set to “don’t care,” the
oscilloscope will not trigger. At least one term in the stage must be set to a value other than X
(don’t care).
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