X2.4
OPERATING MODE INDICATION
AND COURSE DISPLAY
l-he operating mode of the autopilot is indicated
by a flashing red LED, or a flashing prefix letter on
the course display as summarised below:-
OPERATING MODE LED OR DISPLAY PREFIX
FLASHING CODE
TYPICAL DISPLAY
S-AND BY
Autopilot switched on but
4
I
I
not
engaged
AUTO
Autopilot engaged to steer
compass heading.
MANUAL
tfand held control power
1BBHHMBB
steering
in operation.
VANE
Autopilot engaged to
riaintain apparent wind
zngle.
Vane mode is also confirmed by a single beep tone emitted from all control units every 30 seconds.
NAVIGATION
Autopilot supervised by
Navigation Interface.
I
I I I I I
I
SECONDS
1
2 3 4
5 6
q ON
[7OFF
\fane Mode Average Course Display
When in ‘Vane’ mode the displayed course is
averaged over 20 seconds so that significant
course changes due to changing wind
direction are easily observed.
At 15 second intervals the course display
flashes on and off for eight seconds during which
. -“:-A
,A,.
-.,.-.r-no
r-n!
lrca
ctaard I
lnr+Pr
windvane is displayed. This allows the effects of
wind shifts to be monitored and provides valuable
navigation information. The average course
calculation is reset whenever a course alteration
is made or the autopilot is switched out of ‘Vane’
mode.
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