-36-
PRO
PILOT
725 INSTALLATION & SERVICING MANUAL
Sea
Trials
It
is
also
advised
that
the
optimised
settings
are
recorded,
in
case
they
are
accidentally
changed
at
any
time.
AUTOMATIC DEVIATION CORRECTION
The
compass
has
a
facility
to
automatically
measure
and
compensate
for
the
majority
of
hard
and
soft
iron
deviation
found
on
board
a
vessel.
The
compass
sensor
requires
the
vessel
to
turn
approximately
2¼
times
to
complete
the
deviation
correction.
The
first
turn
corrects
for
hard
iron
errors,
the
second
for
soft
iron
errors.
It
is
not
necessary
to
turn
the
boat
at
a
constant
rate
nor
will
momentarily
stopping
the
rotation
affect
the
deviation
correction
procedure.
Turning
the
vessel
in
an
anticlockwise
direction
during
the
correction
procedure
should
be
avoided
as
this
can
lead
to
erroneous
correction
values.
The
deviation
correction
facility
is
not
accessible
until
10
seconds
after
power
up
of
the
compass
sensor.
Procedure
Find
an
area
of
calm
water
where
it
is
safe
to
perform
slow
CLOCKWISE turns.
C O N F I G
Press and hold down the SEA STATE key for approximately 3
seconds until the configuration message appears.
A U T O - D E V
Press the SEA STATE key repeatedly until the LCD displays Auto
deviation message.
Press the or keys and the LCD will display either
*CLEAR* or CORRECT.
C O R R E C T
If
CORRECT
is
displayed
it
means
that
the
autopilot
already
has
correction
values
stored.
Press
the or keys again so
that previous information is erased and *CLEAR* is
displayed.
* C L E A R *
Once the LCD displays *CLEAR* set the vessel on a slow
clockwise turn and press the or keys.
INIT'D
The display will inform you that the auto deviation correction
routine has been initialised.
