BASIC TOPOLOGY OF AN NMEA NETWORK
A basic NMEA network is comprised of a number of doubleended cordsets, tees, a 12v power supply cable and two termination resistors. Every device which connects to the network is connected to the network “backbone” with a tee and a dedicated “drop cable.” Power is supplied to the network with a special power supply cable which connects with a tee to the backbone. Finally, a termination resistor is required to be plugged into the backbone at either end.
NMEA 2000 networks use technology that was developed for the electronic controls in automobiles. A properly designed and installed N2K network will provide a very robust foundation for the intercommunication of your ship systems.