Installation Instructions

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NMEA0183 | NSS Installation Manual
NMEA0183
To exchange NME0183 data, the NSS display has a NMEA0183 serial port, providing both an
input and an output.
The port uses the serial RS422 (balanced) and RS232 (single ended) standards and can be
con gured in the software for di erent baud rates, up to 38,400 baud. NMEA0183 sentences
output by the NSS can be individually turned on or o .
Refer to NMEA0183 Supported Sentences on page 62 for a complete list of sentences.
Wiring NMEA 0183 for RS422
VIDEO IN/
NMEA 0183
RS422
A
B
Orange:RX -
RX -
Green: RX +
RX +
Blue: TX -
TX -
Yellow: TX +
4800, 9600, 38400 baud
TX +
+
+
-
-
NMEA0183 Talker
NMEA0183 Listener
Wiring NMEA 0183 for RS232
VIDEO IN/
NMEA 0183
RS232
A
B
Orange:RX
RX -
Green: RX - COM
COM
Blue: TX
TX -
Yellow: TX - GND
4800, 9600, 38400 baud
GND
+
+
-
-
NMEA0183 Talker
NMEA0183 Listener
 note: when connecting to a DB-9 plug for interfacing to a PC, combine Rx - COM, and TX -
GND from the NSS, and connect to pin 5 (PC GND). Rx is connected to pin 3, Tx to pin 2.
Talkers and Listeners
Do not connect multiple devices outputing data (Talkers) on to the input (Rx) of the NSS. The
RS422 protocol is not intended for this type of connection, and data will be corrupted if more
than one device transmits simultaneously. The output however may drive multiple receivers
(Listeners). The number of receivers is  nite, and depends on the receiving hardware. Typically
three devices is possible.
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