The data acquisition boards offer a wide variety of trigger modes. Besides the standard signal checking for level and edge as known from oscilloscopes itís also possible to define a window trigger. All trigger modes could be combined with the pulsewidth trigger. This makes it possible to trigger on signal errors like too long or too short pulses.
The M2i cards have an addtional re-arm trigger integrated. In addition to the standard trigger level a re-arm level is defined. This mode allows to trigger on the correct edge even on noisy signal.