42
ST70+ User Reference Manual
Starting open water calibration
If the
SeaTrial calibration
page is not displayed,
used the following procedure to gain access:
1. Use the Select Display button on an appropri-
ate Pilot Controller keypad, to select the Pilot
Controller you want to use to carry out the auto-
pilot open water setup procedures.
2. At the appropriate Pilot Controller keypad,
press
MENU
to display the
Main menu
page.
3. Scroll to
Autopilot calibration
then press
OK
to
display the
Autopilot calibration
menu.
4. Scroll to select
Commissioning
, then press
OK
to display the
Commissioning
menu.
5. Scroll to select
SeaTrial Wizard
, then press
OK
, to display the
SeaTrial calibration
start
page.
6. Press
OK
. to display a Warning page.
7. Press
OK
to display the
Swing compass
page, then start the
Compass calibration
procedure.
Compass calibration
The compass calibration procedures are:
•
Swinging the compass.
•
Aligning the compass.
Swinging the compass
The magnetic deviation correction procedure (commonly called “swinging the
compass”) involves turning your boat in slow circles so the autopilot can automatically
determine the deviation and apply any correction required. The correction procedure
reduces deviation errors to a few degrees.
As magnetic deviation can cause significant compass errors on your boat, you
MUST
complete the compass swing before any other seatrial procedure.
To swing the compass, ensure the
Swing compass
page is displayed, then when you
are ready to turn the boat:
1. Press
OK
and begin to SLOWLY turn the boat
in circles (keeping the boat’s speed below
2 knots).
• Take at least 2 minutes to complete each
360°.
• Complete at least two circles.
If you turn the boat too quickly, the display will
show a
Slow down
message. If this occurs,
apply less helm to turn in a larger circle.
D1
1
187-1
Press OK to continue
Sea Trial calibration
Before you can use your
autopilot you need to do
some open water checks.
The water must be calm
with light wind.
Leave plenty of room to
maneuver.
Press CANCEL to exit
without saving
i
D1
1
188-1
Press OK to start
Swing Compass
Move in a slow circle.
Press CANCEL to exit.
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