User's Manual

AIS Class B Transceiver

7.8 Loss Of Compass Heading Data

This is a Level 3 alarm, and will only activate if the SimNet/NMEA2000 data

for the ships compass is lost.

An audible alarm will sound and a “Loss of Compass” alarm window

will open showing details of the lost compass and any other compatible

compass units on the network.

Using the ▲▼ select an alternative device and press the  MENU key to

select it.

If the  MENU key has been pressed without selecting a new compass

the unit will continue to operate without compass information and any

displays consisting of the vessel’s own heading will be blank.

If “HDG Up” or “North Up” View Point mode is selected, it will be

cancelled and the display View Point will change to “COG Up”.

If the original compass unit returns to the network this will automatically

be re-selected, and a message window will appear to indicate this.

To confirm and clear this alarm, press ◄, this will close the window and

return you to current display.

7.9 Safety Message Alarm

AIS technology incorporates a messaging system that allows approved users

to broadcast safety messages that will appear as text in the AIS display.

This is a Level 3 alarm, and will activate if a safety message is received

from another vessel over the AIS network. An audible alarm will sound

and a “Safety Message Alarm” window will open, displaying the received

information and the safety message. An example is shown in Fig. 7.5.

Fig. 7.5 – Example Safety Message