ais furuno fa-170

[ashref]

When installing the AIS FA-170 device with the radar device, pins were installed in the COM1 port and only four pins were connected, and the fifth pin, which is the ground, was not installed. When the technician was asked, he said there was no need, noting that according to the catalog, it must be connected.

 

[Johnny Electron]

Thanks for sharing but the FA170 is a commercial product not discussed here on this consumer product forum.