Pattern-Match Trigger

A pattern-match trigger behaves like a combination lock. When the correct combination is read, the lock opens. Likewise, in the case of triggers, when the desired acquisition pattern is read, the pattern-match trigger is asserted.

The level state of a digital signal can be represented by a binary pattern, where a 1 corresponds to the high level (H) and a 0 corresponds to a low level (L). For example, if the logic levels on channels 0-3 are HLLH respectively, then this pattern could be represented in binary by replacing the H's with 1's and the L's with 0's— 1001. A pattern-match trigger allows you to configure the device to monitor the input terminals for a specific pattern (for example, 10101110). When this pattern is acquired by the device, the device asserts the pattern-match trigger.

You can also specify when you want rising (R or r) and falling edges (F or f) on any edge (E or e) to occur in the pattern to be matched.

Note  Pattern-match triggers are valid only for acquisition sessions.