Table of Contents
Advertisement
Operation
3.14 Long range messages
If the transceiver is connected to a long range communication system via the long range communications port
then long range interrogations may be received. These are requests for information from a distant base station
beyond normal AIS operation range.
The transceiver can be configured to automatically respond to Long range (LR) interrogations, or you can opt
to respond to any interrogation manually. Automatic response is the default setting, see section 3.16 for details
of the menu option used to change this setting. Note that in automatic mode all requested information is
returned if it is available.
When a Long range interrogation is received you will be alerted by a notification screen as shown in Figure 18
(when automatic response is enabled) or Figure 19 (when manual response is enabled).
In automatic response mode simply review and acknowledge the notification screen using the 'Acknowledge'
function key to return to the previous operating screen. In manual response mode you should review the
request and select either the 'Respond' or 'Decline' function key as appropriate.
Figure 18 Long range interrogation notification; automatic response mode enabled
Figure 19 Long range interrogation notification; manual response mode enabled
A list of received Long range interrogation messages is available at any time via the main menu 'Messages'
sub menu. See section 3.16 for more details. The Long range message list shows the time and date of
reception of each message along with the sending base station's MMSI. Full details on each Long range
interrogation in the list can be viewed by pressing the 'View' function key. The Long range message list and
details views are shown in Figure 20.
Page 20
13:20:47
OK
Long range interrogation:
Date:
31/03/2010
Time:
13:15:39
MMSI:
001245368
Name:
>> RES
Response automatically sent
Ack nowledge
13:20:47
OK
Long range interrogation:
Date:
31/03/2010
Time:
13:15:39
MMSI:
001245368
Name:
>> RES
Set default responses
Decline
INT
GPS
INT
GPS
Respond
Advertisement
Table of Contents
