SL-155-5D/10D Models (integrated AIS)
6-13NM Marine Lanterns
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Virtual / Synthetic AtoN Details
The basic configuration of a virtual or synthetic AtoN is comparable to that required for a
‘real’ AIS AtoN. Note that the MMSI number format is different:
A virtual AtoN MMSI has the format 99MID6XXX, where MID is the appropriate national
MID and XXX is a number unique to this station.
The position of the virtual or synthetic AtoN must be configured appropriately to the
position of the aid. Note that a virtual AtoN has no dimensions whereas the dimensions of a
synthetic AtoN should be configured.
Virtual AtoN schedule
The transmission schedule for a virtual or synthetic AtoN must be configured in the same
way as that for the ‘real’ AtoN. The TDMA access scheme, start times and intervals must
be configured in the virtual AtoN tab.
When an FATDMA schedule is used it is important to ensure the slot allocations used for
the virtual and real AtoNs are different in every case. Also note that two consecutive slots
are used for each virtual AtoN report.
Status input configuration tab
AIS AtoN position reports (message #21) contain status information encoded as a bit
sequence. The status bits contain the basic operational state of a connected light and
RACON along with the overall health of the transceiver itself. Connection of a light and/or
RACON is optional and requires equipment with a suitable health output.
CAUTION : Do not modify these setting as the lantern comes preconfigured for
reporting Lantern status in Message 21.