Nmea 0183 Device Connection - Simrad NSS evo2 series Installation Manual

16 |
The following drawing demonstrates a typical small network. The backbone is made up of
direcly interconnected T-piece joiners and an extension cable, which is terminated at each
end.
1
6
_
+
T
12 V DC
9
1 GPS antenna
2 NSS evo2
3 Broadband radar interface
4 SonicHub
5 'Drop' cables (should not exceed 6m (20') each)
6 Power cable
7 Micro-C T junctions
8 Backbone
9 Micro-C terminator (one male, one female)

NMEA 0183 device connection

The NSS evo2 display has an NMEA 0183 serial port, providing both an input and an output.
The port uses the NMEA 0183 (serial balanced) standard, and can be configured in the
software for different baud rates up to 38,400 baud.
¼ Note:
The connector for NMEA 0183 is labelled VIDEO on rear of unit, as the cable is dual
purpose and carries both composite video and NMEA 0183 (on seperate wires).
Talkers and Listeners
Do not connect multiple devices outputing data (Talkers) on to the serial input (Rx) of the
unit. The NMEA 0183/RS422 standard is not intended for this type of connection, and data
will be corrupted if multiple devices transmit simultaneously. The output however may drive
Wiring | NSS evo2 Installation Manual
2
5
7 8
1
RX_B
2
RX_A
3
TX_B
4
TX_A
3
9
1
NMEA 0183 RX_B (orange)
2
NMEA 0183 RX_A (green)
3
NMEA 0183 TX_B (blue)
4
NMEA 0183 TX_A (yellow)
4
T