Operation
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Amber and blue indicators
When the switch function is configured to activate the silent mode feature and the
switch has been depressed for more than two seconds, this combination of indicators
will be illuminated to show that the transmitter is disabled.
This arrangement of indicators will also be visible if the AIS transceiver has been
configured for the blue indicator to signify received AIS messages. In this case the
blue indicator will rapidly turn on and off as messages are received.
Amber indicator only
The AIS transceiver is in 'transmit timeout' mode. This can be for a number of
reasons:
• The unit has only recently been powered on and is obtaining a position fix prior to
transmitting its first vessel information report. (This process can take several
minutes).
• Position fix has been lost. The AIS transceiver will attempt to regain position fix
for 30 minutes before entering an error state.
• The AIS radio channels are exceptionally busy so there is currently no available
timeslot for transmission.
• The unit has been in silent mode and after deactivating silent mode this amber
indicator will illuminate until the first AIS message has been sent
• The AIS transceiver has been commanded by the local authority (via an AIS base
station) to cease transmissions.
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