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Using the ais 300 – Garmin 190-01178-00 User Manual

Page 5

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AIS 300 Installation Instructions

Connecting the AIS 300 to a NMEA 0183 Device (optional)

You can connect the AIS 300 to a NMEA 0183-compliant chartplotter using the bare wires on the AIS 300 power/data cable. Connect

NMEA 0183 bare wires to a Garmin chartplotter as indicated in the wiring layout diagram on

page 3

. Consult the diagram below to connect

the AIS 300 to a non-Garmin chartplotter. Use 22 AWG wire for extended runs of NMEA 0183 wire, if needed. If it is necessary to extend

the power wires, use 16 AWG or larger wire.

Connecting the AIS 300 to a Non-Garmin NMEA 0183 Device

+

-

>
>

>

>

NMEA 0183-

compliant

chartplotter

AIS 300

receiver box

Battery

1 or 4 Vdc

Gray [Tx A (+)]
Pink [Tx B (-)]

Red [power (+)]
Black [ground (-)]

Rx A (+)
Rx B (-)

Power +
Ground -

Wire color

[function]

Wire function

Fuse A

Orange/white

[speed select]

Unconnected = 38400 (high speed)

Connected to battery negative (-) = 4800 (standard speed)

Yellow

[power toggle—

page 4

]

Notes:

Consult the installation instructions for your NMEA 0183-compliant device to identify the receiving (RX) A(+) and B(-) wires.
If your NMEA 0183-compliant device has only one receiving wire (Rx), connect it to the gray wire [Tx A (+)] from the AIS 300, and

leave the pink wire [Tx B (-)] wire unconnected.
The AIS 300 can transmit NMEA 0183 data using either 38400 baud (default) or 4800 baud. Connect the orange/white wire from the

AIS 300 power/data cable to the negative (-) battery terminal if you would like to limit the output speed to 4800 baud. Refer to the

documentation provided with your chartplotter to determine the correct NMEA 0183 baud rate.

using the AIS 300

If you connected the AIS 300 to a chartplotter using either NMEA 2000 or NMEA 0183, refer to the Owner’s Manual provided with your

chartplotter for information on using the AIS-specific features of the chartplotter.
If you did not connect the AIS 300 to a Garmin chartplotter, ensure that you connected a power toggle switch using the yellow wire on the

AIS 300 power/data cable (see

page 4

). When you want to turn on the AIS 300, close the switch. When you want to turn off the AIS 300,

open the switch.


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