User's Manual

Configuring the AtoN Express
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Figure 6 proAtoN Express configuration tab
4.4 Message Schedule Configuration
AtoN Express only transmits the standard AtoN message #21 using FATDMA. The scheduling of this message can be configured using
the following parameters which can be can be entered independently for both channel A and B:
FATDMA (Fixed Access Time Division Multiple Access) access scheme requires that the AIS AtoN is configured with fixed AIS time
slots in which it will transmit AIS messages. Mobile AIS stations operating in the area where an AIS AtoN is installed need to be aware
of the time slots allocated to the AIS AtoN. The slots allocated to the AIS AtoN are 'reserved' by transmissions from an AIS Base Station
that is operating in the same area as the AIS AtoN and is configured to make the necessary slot reservations. In some areas, where
there is no base station coverage, local regulations may allow an AIS AtoN using FATDMA to be installed with out the slot reservation
being made.