SRT CS100, Installation And Operation Manual

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Configuration using proAtoN
Page 28
Example RATDMA schedule
A typical transmission schedule requires that the AIS AtoN transceiver transmit AIS message #21 every three
minutes on alternating channels. The transmission schedule is presented diagrammatically in Figure 13.
Figure 13 Example RATDMA schedule
This schedule can be configured using the following values:
● Channel 1 start UTC = 00:00 (the first minute of every hour)
● Channel 1 interval = 6 minutes
● Channel 2 start UTC = 00:03 (the third minute of every hour)
● Channel 2 interval = 6 minutes
The transceiver is now configured to report message #21 on channel 1 every 6th minute, and on channel 2
every 6th minute, but offset by three minutes from channel 1. This results in a transmission of message #21
every three minutes on alternating channels. The exact timings of the transmissions within the selected minute
will vary as the transceiver selects available slots using RATDMA.
Channel 1
00:01 00:02 00:03 00:04 00:05 00:06 00:07 00:08 00:09 00:10 00:11 00:12 00:00
hh:mm
Channel 1 interval
6 minutes
Channel 2
00:01 00:02 00:03 00:04 00:05 00:06 00:07 00:08 00:09 00:10 00:11 00:12 00:00
hh:mm
Channel 2 interval
6 minutes
Overall interval
(3 minutes)