Just had one other question in case you mightk now the answer... I know how to set up a trigger for what I'm doing but how do I get it to continually check and make sure that there is still a trigger... ie. right now if I trigger it and turn off the device it continues to run... I want it to stop running if there is no more trigger so after each cycle it completes it should check to see if there is some source... Do I just make some sort of simple loop?