Installation manual

Page 15
Basic DSC Operations
All DSC communication is on Channel 70. The radio maintains a continuous watch
on this channel for incoming messages, which are immediately reported. This
monitoring also allows the system to transmit only when the channel is free.
Receiving an Individual DSC Call
When the radio receives an individual DSC message an alarm will sound, and the
message Individual Call is displayed.
If the call type is 'Distress' or 'Urgency' the
alarm ('notify beep') will sound repeatedly
every second. This screen will remain until
you Read the message or Exit.
To read the message:
1. Press Read action key (or any key).
Alarm tone is cancelled.
2. Press Read key again to go to Read mode.
3. The Read mode screen is displayed,
and the message details are now shown.
To acknowledge the message press Select.
4. You now have a choice:
Transmit Acknowledge?
• Yes (default)
• No.
Use the scroll keys to change the option
to acknowledge the received message.
5. Press Select to transmit a DSC
acknowledgement. A DSC Acknowledge
message is transmitted and the display briefly
shows Acknowledge sent and the MMSI of
the called station. The radio now switches to
the caller proposed channel ready for
communication. Press Reset to restore the
original channel, if desired.
Individual Call
R
ead 16 Exit
Individual: Safety
15 Jan 02 UTC:07:43
From stn: 987654321
Select
16 Back
Transmit acknowledge
Yes 
Select Back
[Press Read]
[Press Read]
;Ò
50°56'N at:08:41
001°34'E UTC
Reset
6
Pos
NOTE: Normal practice is to acknowledge a
received DSC message, especially Distress or
Urgency messages.
Acknowledge sent
Called stn:987654321
NOTE: If the call type is ‘Safety’ or
‘Routine’ the alarm will sound twice only.
If the message is not read within 1 minute
the radio will return to standby mode.