4. AIS OPERATION
4-30
4.18 AIS System Messages
AIS system messages are displayed at the bottom right corner of the screen. The table
below shows the AIS system messages, their alert priority and their meanings.
Message Priority Meaning
CPA/TCPA Alarm CPA and TCPA of an activated AIS target are be-
low value set on the menu.
AIS NEW
TARGET
Warning AIS object has entered an acquisition zone.
AIS TARGET LOST Warning Lost object. An AIS target is declared a lost object
when it fails to produce data for six minutes or five
reporting intervals, whichever is the shorter.
AIS ATON LOST Warning Data not input from AIS AtoN for a specified period.
AIS SART LOST Warning Data not input from AIS SART, AIS MOB, EPIRB-
AIS for a specified period.
AIS DISPLAY FULL Warning The radar only displays the closest 350 AIS targets
from own ship.
ACTIVE AIS FULL Warning Number of active AIS targets has reached 50.
AIS DATREP FULL Caution Number of AIS data reports has reached 50.
AIS SART FULL Caution Number of AIS locating devices has reached 20.
AIS SYN TGT FULL Caution Number of AIS synthetic targets has reached 50.
LOST AIS COM Warning Not receiving AIS data from own AIS (VDO mes-
sage).
Note: When no AIS data is received, the message
"AIS COM ERROR" appears in the Alert Box.
Check connection with the AIS transponder.
When the AIS function is disabled: Above mes-
sage is prioritized as a Caution level alert for IMO/
A/R-types. B/W-types do not show this alert.
When the AIS function is active: Above message
is prioritized as a Warning level alert for all radar
types.
AIS CAPACITY 95% Caution Number of AIS targets has reached 1140. (Ap-
pears for R-types only.)
AIS CPTY FULL Caution Number of AIS targets has reached 1200. (Priority
is set to Warning for R-types.)
AIS DISPLAY 95% Caution Number of displayed AIS targets has reached 333.
ACTIVE AIS 95% Caution Number of active AIS targets has reached 48.
AIS MSG SEND ERR Caution Could not send AIS message.
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