SRT AIS, Installation And Operation Manual

Page: 46 / 92

Operation
Page 44
Table 5: Alarms List
No valid ROT information This alarm occurs if the transceiver has no
Rate Of Turn information from connected
sensors or via internal calculation.
No sensor position in use This alarm occurs if the 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.
Nav Status Incorrect NavStatus incorrect
This alarm will occur if the navigation status
is in conflict with the current speed of the ves-
sel. For example the alarm will activate if the
Navigation status is set to moored, but the
vessel speed is greater than 3 knots. Correct
the navigation status to clear this alarm.
Active AIS SART An active AIS SART (AIS Search and Res-
cue Transmitter) message has been
received. The SART will be displayed as the
top item in the target list. Select this item to
see the location of the SART.
Internal / External GNSS
mismatch This alarm occurs if the difference in position
reported by the internal and external GNSS
receivers is too large. Check the vessel
dimensions and GNSS antenna locations
have been entered correctly.
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