Connecting To The Nmea0183 Data Port - ComNav Class B AIS Installation & Operation Manual

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 two wires colour coded as shown in the table in Figure 11 and in the diagram in Figure 11. 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 output port which operates at 38,400baud and a low speed input port which operates at 4,800baud.
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. A multiplexing feature is provided, which means any messages which are received via the low speed port are
automatically transmitted via the high speed port. This is particularly useful when using a chart plotter having only a single NMEA0183 port.
An additional 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.
Figure 11

Connecting to the NMEA0183 data port

Red
Power in +
Black
Power in –
Green
Switch input +
Orange
Switch input –
Brown
Transmit +
Blue
Transmit –
Purple
Receive +
Yellow
Receive –
USB
NMEA0183
38,400 Baud
NMEA0183
4,800 Baud
Installation
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