Chapter 10 - Using Other Special Functions
951/952 Operator’s Manual Rev. B Page 133
The word NEW indicates any alarm messages you haven’t pre-
viously displayed.
The unit’s alarm types and descriptions are as follows:
Table 6: Alarm types and descriptions
Type Description Auto clear?
CLOSE
you’ve come within 900 feet of the arrival circle of
the current waypoint (the arrival-circle radius is
set from the
ALARMS/ALARMS & BACK-
LIGHT
screen)
YES, after 5 seconds
ARRIVE
you’ve entered the arrival circle of the current
waypoint
YES, after 5 seconds
PASS
you’ve passed abeam of the waypoint, without
entering the arrival circle
YES, after 5 seconds
CHANGING
switching to next leg of route (“NOW NAVIGAT-
ING TO . . .”)
YES, after 5 seconds
AVOIDANCE
AREA
you’ve entered an avoidance-area circle NO, potential hazard
ahead
ANCHOR DRAG
anchor is dragging beyond limit set on
ALARMS/
ALARMS & BACKLIGHT
screen
NO, requires immedi-
ate attention
NO LORAN FIX
no position fix received from external loran YES, when condition
clears
DGPS LOST
DGPS data time-out exceeded “
NO GPS FIX
no position fix from GPS “
NO LORAN
DATA
communication failure with external loran receiver “
NO GPS DATA
communication failure with GPS receiver module “
POOR LORAN
FIX
BLINK, CYCLE or LOW SNR detected at loran “
CROSS-TRACK
LIMITS
EXCEEDED
off-course in excess of limits set in
CROSS
TRACK ALARM
only when you’re within
limits
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