AIS 650 - STNG Output Not Working, NMEA Does.

[Wimpress]

A couple of clarifications to my original post and a couple of questions:

1) My STNG network is minimal - currently only a ST1-STNG converter to bring in GPS data, the spur to the AIS, and a spur to the MFD. It continues to carry the GPS data to the MFD, so I assume all is well with the network.

2) I can live without control of the AIS Silent Mode.

3) Assuming the STNG port on the AIS has indeed failed, why does its NMEA port also appear affected (limited to only NMEA 4800)? The AIS Installation Manual refers to "High Speed" and "Low Speed" ports, but does not identify them specifically as Port 1 or 2. I assumed the "High Speed" port is Port 1 on on the ProAIS configuration page, and set #1 at 38400 and #2 at 4800. Could this be a factor?

4) Will using 4800 baud transfer of AIS data really be noticed in the real world?

5) As before, the concern is whether or not the unit as a whole has been damaged or can be trusted as reliable.

Thanks for all help.