OK, I got the 998c SI unit installed, transducers mounted, cables run and screen "lit up". The water in Montana is still mostly solid so there's no way I can give the outfit a run. So, I'd like to make sure that the transducers & GPS are connected properly and the system is working as it should. Is there a way to tell if the unit is functioning properly while it's sitting in my shop? Is there a system test function?
Bob