5.5    Alarm Display
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5.5  ALARM DISPLAY 
 
 
If any of the following alarm occurs, the system displays the alarm message in red in order to attract the 
attention of operator. Other messages are displayed with the suitable color which is yellow or blue 
depending on the level of message importance. 
 
Alarm 
:Red  :Collision-related Alarm 
    :Navigation Alarm 
 
  :System Alarm 
Warning :Yellow :System Warning 
Information  :Blue  :Operation Information 
 
 
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Critical alarm messages for Target Tracking (TT) and AIS functions: 
 
Message 
Class 
Description 
ALR 
No. 
CPA/TCPA  Alarm  There is a dangerous target.  301 
ALR No  : Unique alarm number in ALR sentence and ACK sentence. 
 
Alarm messages for Target Tracking (TT) and AIS functions: 
 
Message 
Class 
Description 
ALR
No. 
AIS (Data)  Alarm  AIS: No communication or communication error.  116 
AIS 95% Capacity 
INFO 
Over 95% of the maximum number of AIS targets.   
AIS ACT 95% 
Capacity 
INFO 
Over 95% of the maximum number of AIS targets to be activated.   
AIS ACT MAX 
INFO 
Maximum number of AIS targets to be activated.   
AIS Alarm ***  Alarm  AIS alarm (Up to 10 alarm messages can be displayed.).   
AIS Alarm 001 
Alarm 
Tx malfunction 
 
AIS Alarm 002 
Alarm 
Antenna VSWR exceeds limit 
 
AIS Alarm 003 
Alarm 
Rx channel 1 malfunction 
 
AIS Alarm 004 
Alarm 
Rx channel 2 malfunction 
 
AIS Alarm 005 
Alarm 
Rx channel 70 malfunction 
 
AIS Alarm 006 
Alarm 
general failure 
 
AIS Alarm 008 
Alarm 
MKD connection lost 
 
AIS Alarm 025 
Alarm 
external EPFS lost 
 
AIS Alarm 026 
Alarm 
no sensor position in use 
 
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