Furuno FEA-2807 Operator's Manual page 457

Alert number 499:
------------------------------------
'ROUTE STEERING' MODE CANNOT BE
ACTIVATED WITHOUT DIFF. POSITION AND
IF POSITION DISCREPANCY LIMIT IS
EXCEEDED.
Alert number 501:
------------------------------------
THIS IS WARNING THAT SPEED IS BELOW
LIMIT SET FOR KALMAN FILETER. IT IS
AVAILABLE TOGETHER "ALERT 408".
"ALERT 501" IS REPEATED EVERY 2
MINUTES UNTIL AFTER 10 MINUTES
"ALERT 497" APPEARS.
Alert number 502:
------------------------------------
THIS IS WARNING THAT SPEED IS BELOW
LIMIT SET FOR KALMAN FILETER. IT IS
AVAILABLE TOGETHER "ALERT 2008"
TO ACTIVATE ROUTE STEERING USE
HIGHER SPEED .
Alert number 503:
------------------------------------
THIS IS WARNING THAT SPEED IS BELOW
LIMIT SET FOR KALMAN FILETER. IT IS
AVAILABLE TOGETHER "ALERT 408".
"ALERT 503" IS REPEATED EVERY 2
MINUTES UNTIL AFTER 10 MINUTES
"ALERT 496" APPEARS.
Alert number 504:
------------------------------------
THIS IS INSTRUCTION TO CHANGE
STEERING MODE. THIS ALERT IS
GENERATED IF THERE ARE NOT
SUFFICIENT SENSORS AVAILABLE TO
CONTINUE PROGRAM TRACK
Alert number 505:
------------------------------------
THIS IS INSTRUCTION TO CHANGE
STEERING MODE. THIS ALERT IS
GENERATED IF THERE ARE NOT
SUFFICIENT SENSORS AVAILABLE TO
CONTINUE GOTO TRACK
Alert number 506:
------------------------------------
THIS IS INSTRUCTION TO CHANGE
STEERING MODE. THIS ALERT IS
GENERATED IF THERE ARE NOT
SUFFICIENT SENSORS AVAILABLE TO
CONTINUE GOTO WPT OR GOTO TRACK
DISABLED: NEEDS GOOD POS
ROUTE: NEED HIGHER SPEED
DISABLED: NEED HIGHER SPD
PRGTRACK: NEED HIGHER SPD
PRGTRACK: USE RADIUS CTRL.
ROUTE: USE GOTO WPT
ROUTE: USE RADIUS CTRL.
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30. Alerts
30-27