User manual

NMEA Data Multiplexer - NDC-4-A & NDC-4-A -USB
Page 25© 2009 Active Research Limited
Set-up procedure
1. Remembering that the channel’s have a priority
level (that only has a effect during very high loads),
choose which device to connect to which channel.
Place the most important device on channel 1 and so
on. If the ‘Inclusion Lists’ are tuned to allow only the
required data of each device through, then the port
priorities will normally not come into operation (as the
maximum output rate will usually not be exceeded).
2. Starting with channel 1, place a tick next to all required
NMEA sentences (using the individual tick boxes, the
grouped tick boxes or a combination of both), by left
clicking on the text or box with the mouse pointer.
3. Perform the same operation
for any other channels that you
intend to use. Use the Editing
Channel selection list to change
which channel is active - left click
on the controls down arrow to
display the list and then select
the required channel number.
Any combination of channels can
be used – for example, in a two-
device set-up channel’s 1 and 3,
or 2 and 3 etc. could be used.
4. If the NDC hardware has not been detected yet, the
Control Centre will not allow the conguration transfer.
If this happens check all cable connections, Control
Centre communication settings (port number and
Baud rate) and battery power to the NDC hardware
(the diagnostic LED should be lit and either a ‘Green’
or ‘Amber’ colour).
5. When the Control Centre has detected the NDC
hardware (the hardware information will be displayed
in the NDC Hardware Information window), clicking
the Send to Hardware button will start a transfer
of the new Inclusion List data to the hardware. This
process can be monitored on the Flash Hardware
Control and NDC Hardware Connection Status
windows (for advanced users only).
6. The Flash Hardware Control window will display the
success status of the transfer and then disappear.
7. If at any time you would like to return the Inclusion
List settings back to their defaults, press the Reset
to defaults control button followed by the Send to
Hardware control button.
Note:
1. The OUT 0 / RS232 / USB output is unaffected by
the NMEA Inclusion Lists and typically (when Clone
output mode is disabled) retains all received NMEA
data – as this port’s high transmit bandwidth/capacity
can handle all the NMEA data received.
2. Pressing any of the three control buttons on the
Inclusion List Tab will only change / download /
retrieve the inclusion list conguration values. The
Port congurations will remain unchanged.