Raymarine RS232 Owner's Handbook Manual page 20

18
PC Serial Port Connections to NMEA
The following diagram shows the pin connections for 25-pin and
9-pin PC serial ports to NMEA.
2
3
7
DB25
25-PIN SERIAL CONNECTOR
Transmit (from PC)
Receive (into PC)
RS232 Ground
PC/SeaTalk/NMEA Interface Box
2
3
5
DB9
9-PIN SERIAL CONNECTOR
Receive (into PC)
Transmit (from PC)
RS232 Ground
D5903-1