Audio Alarms - Furuno FS-5070 Operator's Manual

3.3

Audio Alarms

When you receive a distress alert or routine call addressed to your ship, the audio and
visual alarms are released. For the distress or urgency call, the audio alarm sounds until
the CANCEL key is pressed, and sounds for one minute and then automatically goes off
in case of other calls. The tone of the alarm changes with the call received. By becoming
accustomed to the tone, you can know which type of call you or other party have received.
Safety call received
Routine call received
While DISTRESS button is pressed for four s
Distress alert sent
Own ship position not updated
Distress alert call received
Distress relay call received
Distress relay ack call received
Distress ack call received
Urgency call received
Urgency ack call received
Alarm Frequency (interval)
150 Hz (1000 ms) and 100 Hz (500 ms)
150 Hz (1000 ms) and 100 Hz (500 ms)
2000 Hz and 0 Hz (500 ms)
2200 Hz, continuous (2 seconds)
2000 Hz (250 ms) and 0 Hz (500 ms)
2200 Hz and 1300 Hz (250 ms)
2200 Hz and 1300 Hz (250 ms)
2200 Hz and 1300 Hz (250 ms)
2200 Hz (500 ms) and 1300 Hz (500 ms)
2200 Hz and 0 Hz (250 ms)
2200 Hz and 0 Hz (500 ms)
3. DSC OVERVIEW
3-3