User manual

Page 30© 2009 Active Research Limited
Conguration of AIS
Figure 21 – AIS Conguration with 38400 Baud Rate
NDC Control Centre, supplied on the CD (or available for
download from Actisense website) allows a quick set-up
for AIS using the conguration le included.
From the menu select ‘File’ → ‘Load Conguration File’
and select ‘NDC-4 cong for AIS.ini’ le from the install
directory. This will set input port 2 to the AIS required Baud
rate of 38400, and congure OPTO IN 2’s Inclusion List to
lter out all AIS data from being sent to ISO OUT 1 which
is typically kept at 4800 Baud.
The use of AIS at Baud rates lower than 38400 cannot
be recommended as this could cause random AIS
target data to be lost in areas of high target density.
To enable these settings on the NDC-4 click on the ‘Send
to Hardware’ button on both the ‘Port Cong’ and ‘Inclusion
List’ tabs.
The AIS device should then be connected to the NDC-4’s
‘OPTO IN 2’ as shown in Figure 21, with any other talkers
connected as required. The device for receiving the AIS
data (chart plotter or PC) should be connected to ‘ISO
OUT 0’, or the USB port.
The remaining ports can be re-congured by the user as
needed using NDC Control Centre. Refer to the ‘Using
NDC Control Centre’ section for full detailed information
on how to use the NDC Control Centre.
Setting up the Hardware for AIS
4800 Baud
NMEA DATA COMBINER
99999
NDC-4-A-USB
38400 Baud
4800 Baud
4800 Baud
38400 Baud
Chart
Plotter
NMEA
Talker 3
+
G
AIS
Talker
A
B
NMEA
Talker 4
+
-
NMEA
Talker 1
A
38400 Baud
B
A
B
A
B
In Out