That thick intimating owners manual got you all confused? GOOD NEWS!!! Doc Samson has a DVD out that goes completely thru it. 2hrs of explaining what we can't grasp or get lost in the menus. Welcome to Hightech Fishing with Doctor Sonar - "Doc" Bruce Samson Go to the online store and scroll down to Lowrance HDS Educational DVD. I got mine ordered:D:D:D <*)}}}><