Installation
Page 19
Step 6 - Connecting to NMEA0183 compatible equipment
The two independent NMEA0183 data ports provide connection to your chart plotter and other
NMEA0183 compatible equipment. Each port consists of four wires colour coded as shown in
the table in Figure 8 and in the diagram in Figure 10. Connect the wires to the appropriate
connections on your NMEA0183 compatible equipment. Please refer to your equipment manual
for more information.
The AIS transceiver has a high speed port which operates at 38400baud and a low speed port
which operates at 4800baud. The high speed port is intended primarily to connect to a chart
plotter, while the low speed port is intended to connect to other NMEA0183 devices. The ports
have bidirectional multiplexing, which means any messages which are received via the high
speed are automatically transmitted via the low speed port and vice-versa. This is particularly
useful when using a chart plotter having only a single NMEA0183 port as any other sensor such
as a gyro-compass can be connected to the AIS transceiver via the low speed port and the AIS
transceiver can be connected via the high speed port to the chart plotter resulting in the chart
plotter receiving both AIS information and heading information simultaneously. Please ensure
your equipment is configured to use the correct baud rate for the port it is connected to.
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