Operation; Trouble Shooting - Comar Systems R200U User Manual

Any 4800 baud NMEA data such as that from a GPS, Chart Plotter or Instruments can be
connected to the NMEA input 4800 terminals, observing the correct polarity. This data will be
multiplexed with the AIS data and sent out at 38,400 baud.
WHITE NMEA Input Positive +
BLUE NMEA Input Negative -
The unit can only be connected to one item of equipment, so choose the unit that has the most
information that you require, normally a GPS.
The supplied Power/Data plug is pre-wired with the supplied cable. This cable can be altered if
you wish to use your own cable. Pressing the individual orange button on the plug will release a
cable core. To insert a new cable core hold the orange button down and insert the stripped back
cable core into the hole.

7 OPERATION

On applying power the green ON LED will light and the two red channel A and B LEDs will come
on for approximately 10 seconds. If the unit is within VHF range of other AIS equipped vessels,
the red channel A and B LEDs will flash randomly.
If the unit is connected solely by the USB cable to a computer, this will power the unit and also
transfer data. Install the USB Drivers on the supplied CD and select the com port on your PC
which this device is allocated to.
Connecting external 12/24V dc to the unit will automatically switch the power source from the
USB to external power; the USB will still output data.
The NMEA output at 38,400 is available at all times whether the unit is on USB power or external
power.
NMEA data at 4800 on the input will be multiplexed by the unit and output to the NMEA output
port and the USB data cable.

8 TROUBLE SHOOTING

No green ON LED is displayed
Check the power supply and that the unit is connected correctly to 12 or 24V dc supply, or by
USB
No red Channel A or B LED flashing
Check the antenna connection
Check that you are in range of vessels transmitting AIS
R200U
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