Audio Alarms - Furuno FS-1575 Service Manual

1.3.5 Audio Alarms

When you receive a Distress alert or General call addressed to your ship, the audio and
visual alarms are released. The audio alarm can be silenced with the CANCEL key.
Alarm
Safety call received
Routine call received
While DISTRESS key is pressed for four seconds
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
CONFIDENTIAL (internal use only)
This confidential document is used only by FURUNO authorized persons.
It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.
Table 1.3.5 Audio Alarm list
Frequency (interval)
750 Hz and 650 Hz (50 ms)
750 Hz and 650 Hz (50 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 (500 ms) and 1300 Hz (500 ms)
2200 Hz (500 ms) and 1300 Hz (500 ms)
2200 Hz and 0 Hz (250 ms)
2200 Hz and 0 Hz (500 ms)
1-17
1.3 Operations