Well, I would like the trailing edge of the 'needed' to match up as closely as possible with the trailing edge of 'current.'
There is no min time for rising to trailing edge of current, but 40ms is obviously too short of a switch time for the mechanical device I am working with, which is the reason I am trying to get a time < 500ms (max time), which more closely correlates with the 'signal needed' waveform.
The noise pulse, based on the scope, appears to be much narrower than initial or final pulse...the waveform I attached closely resembles what I am seeing on the scope. I believe my timer is timing the first pulse only (obviously) when I need it to time the rising edge of first pulse to falling edge of the last pulse (or as close as I can get to that).
So based on this and the previous info, you still think a retriggerable one shot might work?
Thanks again for the feedback.