USER & INSTALLATION MANUAL
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extended navigation & communication
ExNC
extended navigation & communication
ExNC
6.4.2 Data Connection
The power/data cable is a 15-pin D-type female connector with which you can
connect your ExNC 101 via RS 232 or RS 422 to an external display unit (e.g. chart
plotter, PC, ENC, ECDIS) visualizing other AIS units within range.
Please check with the supplier of your ECDIS, ENC or PC software and make sure
that the same is able to compute AIS data.
The software of your ExNC 101 delivers you automatically AIS data on the interface.
The baud rate is fixed to 38400 bps with 8 data bits, one stop bit and no parity. No
handshake is used. VDM, VDO, ACA, TXT messages conform to NMEA 0183.
6.4.3 Serial Port Input/Output
There are two serial ports provided. One is in RS 232 and one in RS 422 format
(optional). Data input can be done through both ports.
The serial port interface(s) output:
• As a VHF Data Link Message (VDM) all incoming VHF Data Link (VDL) data
received by your transponder.
• The VHF data link own vessel (VDO) messages sent by your transponder over
the VHF Data Link.
• AIS regional channel assignment messages (ACA) received. These are
derived from an incoming VHF Data Link message (message 22) or a DSC
message.
• Text messages (TXT).
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