Sharing Map Over NMEA?

[gpsguru]

Originally Posted by A1an

My new console will have twin Garmin plotters and will be connected over a N2k network. Will the plotters be able to share a G2 Vision card if I had a card in just one of the plotters?

I have twin 95SV Plus plotters, and they share everything including G3 Vision Relief shading charts.

The sharing is not done by NMEA, you need to connect both plotters to a Garmin Port Expander (GMS10) and the master port is then connected to the NMEA backbone. The GMS 10 is in reality a 100mb Ethernet switch, this allows the sharing to be almost seamless.

[Dankoozy]

Ordinary NMEA is very slow and an ASCII based protocol. While it would in theory be possible to write a bit of code that would slowly transfer map data using proprietary NMEA sentences you'd be insane to try it.