Alarms - NorthStar 941X Reference Manual

Alarms

Page 68
S
everal special 941X functions are controlled by the STAR function
key ( ). These include alerts and alarms, TideTrack™ functions,
and setup functions.
The Northstar 941X has a number of automatic alarms that can alert you
of special situations. For example, when you are approaching a waypoint,
the 941X signals you with a distinctive "beep" and a flashing exclamation
point symbol on the screen.
At any time, you can press the STAR button (
ALARMS & BACKLIGHT screen which displays the cause of the most
recent alarm.
The 941X's alarm types and descriptions are:
TYPE
CLOSE
you have come within 900' of the
arrival circle of the current way-
point (arrival circle radius set
from ALARMS & BACKLIGHT
screen)
ARRIVE
you have entered the arrival cir-
cle of the current waypoint
PASS
while navigating to waypoint,
perpendicular to track passed,
but arrival circle was not entered
CHANGING
switching to next leg of route
("NOW NAVIGATING TO . . . ")
AVOIDANCE AREA
avoidance area circle has been
entered
ANCHOR DRAG
anchor is dragging beyond limit
set from ALARMS &
BACKLIGHT screen
NO LORAN FIX
no position fix received from ex-
ternal loran
DGPS LOST
DGPS data timeout exceeded
NO GPS FIX
no position fix from GPS
NO LORAN DATA
communication failure with ex-
ternal loran
NO GPS DATA
communication failure with GPS
POOR LORAN FIX
BLINK, CYCLE or LOW SNR
detected at loran
CROSS-TRACK
off-course in excess of limits set
LIMITS EXCEEDED
in CROSS TRACK ALARM
7 — Other Special Functions 7 — Other Special Functions 7 — Other Special Functions 7 — Other Special Functions
DESCRIPTION
) to access the
AUTO
CLEAR?
YES, after 5
seconds
YES, after 5
seconds
YES, after 5
seconds
YES, after 5
seconds
NO: potential
hazard ahead
NO: requires
immediate
attention
YES, when
condition
clears
"
"
"
"
"
only when
within limits
Rev. D