Furuno FS-1570 Service Manual page 73

EXT ALARM
The alarm sound from the incoming indicator (IC-303-DSC) is switched to ON or OFF
according to the category of the DSC message. See table below.
Category
DISTRESS
URGENCY
SAFETY
BISINESS
ROUTINE
2. AUTO ACK
Figure below shows "Auto ack setup" menu.
COMPLY TYPE
At the reception of Individual, PSTN, Position and Polling calls, acknowledgement can
be sent out automatically with the selected comply type (able or unable). AUTO ACK is
selected by using [ACK].
· ABLE: Able to comply
· UNABLE: Unable to comply
In Auto ACK mode, acknowledgement is not sent out automatically;
· When the received message includes an error (ECC ERROR).
· When the handset is "OFF HOOK".
· When "COMPLY TYPE " is "UNABLE" where as the setting of "POLLING"
and "POSITION CALL" is ON.
· When the category is distress, urgent and safety.
· When the communication type is TTY, MORSE, FAX and DATA
· When the communication frequency is set to "No Information" or specified
other than marine band.
· When either transmission or receiving frequency is not specified.
DISTRS ROUTINE
ON OFF
ON OFF
OFF OFF
OFF ON
OFF ON
3-17
Table 3.3.2 EXT ALM and category
Options
ALL
ON
ON
ON
ON
ON
3.3 DSC SETUP
OFF
OFF
OFF
OFF
OFF
OFF