NMEA Network Fundamentals / Tips
NMEA 2000
1
1
5
5
2
2
3
3
4
4
Male
Female
Pin 1
: Shield
Pin 2
: NET-S. (Power )
Pin 3
: NET-C. (Power Supply -)
Pin 4
: NET-H. (CAN-H)
Pin 5
: NET-L. (CAN-L)
Connector Pin-Outs
NMEA 2000 plug-and-play components make it easier than ever to
integrate marine electronics, allowing you to view, control and share
functions and information across a network of displays. Yet there are
some do’s and don’ts that ensure that your NMEA 2000 cable and
connections function properly. Here are six Network Fundamentals tips:
(courtesy of Garmin)
13
1 Power Up the Network
Remember that an NMEA 2000 network requires 12-volt DC power.
Special connectors with positive and ground wires (with inline fuses for
the positive wire) let you supply onboard power to the so-called
backbone – the main communication channel for the system. These
power cables should be connected near the center of the backbone in
order for the system to function properly.
2 Use 12 Volts DC Only
Make sure any power source you choose is 12 volts DC; do not
connect your NMEA 2000 network to any other power source such as
24 volts DC.
