Dockhead has given you some great real-world info!!!
If the NSE12 only has one NMEA 0183
output and you set it to output the 38400 baud AIS data, the Furuno 1835 will display the AIS data, but I'm not clear if the Furuno 1835 will also display the position and depth data (which is normally sent at 4800 baud)....
Perhaps this was your question all along???
(the answer might just be, "try it and see"...)
The Furuno 1835 has two NMEA
and they are set/configured independently, so if the NSE12 had two independent NMEA
0183 outputs, they would be no issues.....the issue
that I see is the above...and as I wrote, you may just need to connect the wires, do the proper set-up in the NSE12's settings and network menus, configure the Furuno NMEA port, and give it a try...can't hurt it, to try...
In any case, I agree with Dockhead, your desired set-up seems odd to me....
Yes, the Furuno 1835 is a great radar, but depending on where you are at / where you are sailing, you may find little need for radar??? and/or you may find that a new Simrad radar (radome) will provide you with good results, and selling the Furuno 1835 will probably offset the cost of the new Simrad radome....
s/v Annie Laurie