20 |
Installation |
NAIS-400 Instruction Manual
Step 4 - Connecting the accessory cable
An accessory cable is supplied with the product to provide con-
nections to power, the external switch, the NMEA0183 data ports
and USB. The cable has a pre-moulded connector at one end which
should be connected to the connector on the unit marked ‘PWR/
DATA’. The other end of the cable has eight colour-coded bare wires
ready for connection and a USB connector for use with a PC or Mac.
The table below lists the function of each colour-coded wire for
reference.
Wire colour Description
Function
Red
Power in +
Power supply connections
Black
Power in -
Light green Switch input-
External switch connection for
silent mode
Orange
Switch input+
Brown
NMEA0183 port 1 TX+ High speed NMEA0183 output
(38,400 baud) intended for
connection to chartplotters
Blue
NMEA0183 port 1 TX-
Grey
NMEA0183 port 2 RX+ Low speed NMEA0183 input
(4,800 baud) intended for
connection to other NMEA0183
compatible sensors for
multiplexing of data to the
chartplotter
Yellow
NMEA0183 port 2 RX-
Colour-coding of wires in the accessory cable
Warning:
Please check your wiring very carefully before ap-
plying power to the product. Failure to wire the product correctly
could result in permanent damage.
Step 5 - Connecting an external switch
A toggle switch can be connected to the AIS transceiver to provide
remote control of silent mode. Connect the toggle switch between
the light green and orange wires as shown in Figure 10. Connection
of an external switch to toggle silent mode is optional and not es-
sential for normal operation of the product.
Warning:
Do not connect a voltage source across the switch
inputs, as this may damage the transceiver.
