NMEA 183 - interfacing

TN001   seaPro will not show my position or COG/SOG

TN002   Can’t get the differential light to show on the panel

TN003   Why does the differential light flash on and off?

TN011    I can’t get the extended track line (X-line) or my vessel shape to display.

TN018    GPS position is not appearing or has appeared and no longer does or cannot see COG\SOG
                Diagram of the NMEA183 to RS232 9 Pin D type serial port connector 

TN024    seaPro won’t talk to my autopilot

TN025    I get an error message which says' Serial Port COM1 No 8250 present' .

TN028   I get an error message which says' Serial Port COM1 General Fault' or Com Port already in Use' .
                or similar message

TN031 seaPro gives a 'Com port in use' message (NMEA 183 input) or COM port 2 in use

TN033   Downloading/uploading  waypoints and routes to a GPS/ Garmin GPS