YS-S4 Multi-rotor Autopilot User Manual V1.4
20
Step
2
Select
"Horizontal
Alignment"
in
the
dialog
box,
and
then
click
"OK"
button
to
start
level
calibration.
If
you
don't
want
to
keep
calibrating
select
"Cancel"
and
confirm
“OK”.
Step
3
Level
your
aircraft
and
carefully
turn
around
horizontally
three
times.
ENSURE
that
the
GREEN
LED
light
remains
ON
during
this
procedure.
If
it
turns
OFF,
that
means
the
aircraft
is
not
horizontal.
Adjust
the
position
until
the
GREEN
LED
is
back
ON
and
continue
with
the
rotation.
Step
4
Select
"Vertical
Alignment"
in
the
dialog
box,
and
click
"OK"
button
to
start
the
vertical
calibration.
If
you
don't
want
to
keep
on
calibrating
select
"Cancel"
and
confirm
“OK”.
Step
5
Carefully
rotate
the
aircraft
3
times
as
shown
below,
always
keeping
the
aircraft
nose
down.
Ensure
the
GREEN
LED
remains
ON
throughout
the
turn.
If
the
LED
turns
OFF,
adjust
position
until
the
GREEN
LED
is
back
ON
and
continue
with
the
rotation