B-3
Appendix B Alert List 
 
 
 
 
 
B.2  Warnings 
 
Message  Explanation 
AIS ACT Max 
The AIS activation target count has reached the 
maximum activation target count. 
AIS(invalid) 
There is a format error or a status error of the AIS 
data. 
AIS(unavailable)  The AIS data cannot be received. 
AIS Max Target 
The AIS target count has reached the maximum 
target display count. 
Approach to critical point  The position is near a critical point. 
Arrived at WOL  The ship has arrived at a WOL. 
Arrived at WPT  The ship is inside of a course change point circle. 
RADAR Proc. Unit #n(Communication error, 
DSP #m) 
There is an error in communication with DSP #m. 
RADAR Proc. Unit #n(Program Load Failed, 
DSP #m) 
DSP #m cannot be started. 
RADAR Proc. Unit High TEMP  The temperature of RADAR Proc. Unit is too high. 
RADAR Proc. Unit (Process Error) 
The control circuit in the radar antenna is 
abnormal. 
RADAR Proc. Unit (SYNC Signal Lost) 
RADAR Proc. Unit detected an error in an interrupt 
signal. 
Terminal Board(Communication failed) 
Communication with terminal board cannot be 
performed via LAN. 
CMP Relay Software(Communication error) 
There is an error in communication with 
Companion MPU. 
COG/SOG(invalid) 
There is a format error or a status error of the 
SOG/COG data. 
COG/SOG(not plausible) 
The plausibility of COG/SOG data cannot be 
verified. 
COG/SOG(unavailable)  The SOG/COG data cannot be received. 
CPU Core#n Clock down  The CPU core has been underclocked. 
CPU Core#n High TEMP  The CPU core temperature is too high. 
CPU Fan 
The RPS fan revolution per minute has been 
decreased. 
CPU High TEMP  The CPU temperature is too high. 
DATUM(unavailable)  The DTM data cannot be received. 
Depth(invalid) 
There is a format error or a status error of the 
Depth data. 
Depth(unavailable)  The Depth data cannot be received. 
External TT#n(invalid) 
There is a format error or a status error of the 
External TT#n data. 
External TT#n(unavailable)  The External TT#n data cannot be received. 
Heading(invalid) 
There is a format error or a status error of the 
Heading data. 
Heading(not plausible)  The plausibility of Heading data cannot be verified.