I'm currently running a Helix 12 Chirp Mega SI GPS G2N unit at the console. I currently have the SI ducer mounted under the jackplate, and the 2D sonar in the bilge with the Y cable to the graph. I'd like to add a second Helix 12 for mapping, or to have the ability to put left side imaging on the left graph, and right side imaging on the right graph.
What 12" Helix units are compatible to do this, and what cables would I need besides an ethernet cable plus 2 AS EC QDE cables, or is that the only one? If I put a Helix 12 Chirp GPS unit and ethernet together, the SI/DI views will only be allowable on the SI unit correct, I wouldn't be able to split screen onto both?
I already have a 5 port ethernet box nearby and ready.