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These three types of trigger conditions are described below.
Find Pattern
Find pattern allows you to specify a data pattern consisting of 1's, 0's,
or X's (don't cares) across the 16 channels. The most significant bit is
channel 15 and least significant bit is channel 0.
Use the field editing keys to position the cursor to the different
channels, and use the Tab key to select the appropriate value.
Duration
The "present for" option allows you to specify a pattern duration
greater than or less than a specified amount of time before the pattern
trigger condition is met.
If the pattern is valid but the duration is not met, there is a 20 ns reset
time before looking for a pattern again.
Greater Than Duration
The trigger occurs after the pattern is present on the probe for the
specified time duration. Selectable from 30 ns to 10 ms in 10 ns
increments.
Less Than Duration
The trigger occurs when the specified pattern is present on the probe
inputs for greater than 20 ns but less than the specified time duration.
Selectable from 40ns to 10 ms in 10 ns increments.
An example pattern trigger, with a duration greater than 30 ns, is
shown in figure 5-6.
5-12 Using the External Timing Analyzer
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