Newtfire, as long as you can get depth readings from a transducer, you're collecting sonar data that can be used in autochart. Even if you're running 40mph down the lake you're collecting depth data. Now, obviously you're going to collect more precise data while going a slower speed. So, for key fishing areas you'll probably want to keep it under 10mph, and maybe even slower.
But yet, your initial question, you should be able to get depth data from your quad beam transducer for autochart.