A combination of GPS and DGPS still provides the highest degree of accuracy. There is an interface cable available to facilitate this installation. The list price is 49.95. I need help connecting the two together.
Chances are the wrong port has been selected in the fix and compass menu.
Try selecting a different port. My color sounder is not displaying a digital depth. Increase the gain until the color red appears on your bottom return echo. My depth sounder is displaying a water temperature of 99 or 32 . More than likely the temperature sensor in your transducer has malfunctioned.