The bargraph operates as a turn indicator with a
resolution according to the active display mode.
MODE BARGRAPH
Hd 1
3 lit diodes runs in a pattern from left or right in
steps per 1° heading change. The pattern runs
from left to right when the heading is increasing
and opposite when the heading is decreasing.
Hd 2
3 lit diodes runs in a pattern from left or right in
steps per 0.1° heading change. The pattern runs
from left to right when the heading is increasing
and opposite when the heading is decreasing.
The buzzer beeps once per 1° change in actual heading.
Commanded heading display
If the HR80 reads a heading command from the
autopilot, the instrument will automatically switch to
show commanded heading.
LED
Compass
card
Initial
display
Reading
heading command
After
1 second
Actual
heading
The bargraph will show the difference between actual
and commanded heading, lighting the diodes from centre
to right or left. When the actual heading is higher than
the commanded heading, the bargraph is lit to the left
with one diode per 2° difference. Similarly the bargraph
is lit to the right when the actual heading is lower than
the commanded heading.
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