My boat is rigged with two GPS antennas and two transducers which are independent of each other. The front transducer is on the trolling motor and the GPS antenna is on the bow. There is a GPS antenna in the rear and a transducer in the back. The front connector collector only contains the connectors for the front equipment. The rear collector connector only has the connectors for the rear equipment. Each connector collector has an Interlink cable for synchronizing the data. There are no GPS connections through Interlink.
My unit is a 998. My friend also has a 998. We decided one day to put his unit on my dash console while I ran my unit up front. Whether both units participated on the network or both units were set not to participate, the second unit that was powered on would freeze its display. For example, I powered up the bow unit and worked normally. When the second unit was powered up on the console, the side and down scan displays would start reading out and then freeze on the second unit. The front unit would continue to function normally. The opposite also held true. If the console was powered up first and then the bow unit, the bow unit being the second powered up unit would start to display and eventually freeze. Depth readings were showing 1500 feet in 8 feet of water.
We carefully experimented with keeping the front transducer forward so that the side scan beams would not intersect, which would happen as the trolling motor is rotated. We also tried to change beam frequencies to see if that would help. What I don't understand is why the display would freeze on one of the units. Anyone having similar experience with this scenario, I would appreciate learning how you got around that. Thank you.