SRT 427-0002B, Инструкция по установке и эксплуатации

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Operation
Page 48
Table 6 Alarms list
4.6.8 Messages
Messages can be received from other AIS equipped vessels and also sent to
specific vessels (addressed messages) or sent to all vessels in range
(broadcast messages).
Reception of an AIS text message is indicated by the presence of the message
icon at the top of the screen. This icon is shown whenever there are unread
AIS text messages. Messages can be reviewed and replied to via the Inbox.
The AIS transceiver can store up to a maximum of 20 messages in the Inbox
and 20 messages in the Sent folder. If the number of messages exceeds 20
then the oldest message will be overwritten.
When a Safety Related Message is received the user will be notified
immediately with a pop-up showing the message. Standard text messages are
Heading lost or invalid This alarm occurs if the AIS transceiver has
no valid heading information from any
connected sensor, or if the heading is
undefined.
No sensor position in use This alarm occurs if the AIS transceiver has
no valid position information from any
connected sensor.
UTC Sync Invalid This alarm indicates that the transmitter is no
longer directly synchronized with the GNSS
receiver. This may be because the GNSS
receiver cannot receive sufficient satellites.
Heading sensor offset This alarm occurs if the difference between
the course over ground and heading data is
greater than 45° for more than 5 minutes.
This alarm only occurs if the vessel speed
over ground is greater than 5 knots.
Alarm Description