B&G NAIS-400 User Manual

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Installation |

NAIS-400 User Manual

ing to connect the USB port to a PC.
Once installed the AIS unit can be connected to the PC. The USB
device will be automatically detected and will appear as a new COM
port device. Select this COM port and a baud rate of 38,400 in PC
based navigation software to make use of the AIS data.

Warning:

If the USB connection is removed from the PC or

Mac during use, you must reset the connection before further
use. To reset the connection: disconnect, then re-apply power to
the AIS before closing and re-launching any PC or Mac applica-
tions using the USB connection. Finally, re-connect the USB cable
between the PC or Mac and the AIS transceiver.

Step 9 - Connection to a power supply

The AIS transceiver requires a 12V or 24V power supply, typically
provided by the vessel’s battery. It is recommended that crimped
and soldered lugs are used to connect the AIS transceiver to the
power source. It is recommended that the power supply is con-
nected via a suitable circuit breaker and/or 3A fuse block.

Connect the red wire to a 12V or 24V power supply positive terminal.

Connect the black wire to the supply negative terminal.

Fig. 12 Power supply

Transmit +
Transmit –

Power in +
Power in –

Switch input +
Switch input –

Receive +
Receive –

Brown
Blue

Light green
Orange

Red
Black

White
Green

Purple
Pink
Grey
Yellow

Transmit +
Transmit –
Receive +
Receive –

NMEA0183
Port 1

38,400baud
(chart plotter)

NMEA0183
Port 2

4,800baud
(other NMEA0183 device)

Figure 12 Connecting the power supply