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mn100 Dual Digital Display
8
2.5 Chapter and Page Operation
Instrument information is displayed in a “Chapter and Page” format
using the
(Chapter) button to scroll through the Chapters which
are displayed in the upper part of the window and the and
(Page) buttons to move between Pages within a Chapter which are
displayed in the lower part of the window.
Chapter Sequence Shown in Upper Window
(for a full description of each Chapter see page 10 - c1 to c8)
Setup and Calibration
29
4.4 Compass Calibration
To ensure that inaccuracies caused by metallic and magnetic objects
on the boat are kept to a minimum is necessary to calibrate the
compass. A deviation caused by surrounding objects will be
compensated for and the compass reading may be set to the correct
heading.
Press and hold the
button for 2 seconds to enter Setup
Press the
button repeatedly to scroll to the “SETUP/COMPASS”
Chapter
To Complete a deviation correction turn:
Press the
button to advance to “DEV
0
” Page
Press the button to enter Compass Calibration Mode
Turn the vessel slowly keeping the speed below 4 knots and taking
approximately 2 minutes to complete 360
0
. Keep turning the vessel
until the display changes to display a value (usually about 1.25 turns)
Note: If the rate of turn of the vessel is too fast the instrument will
display “TURN HIGH”. It is not necessary to abandon the
turn at this stage but do lessen the rate of turn by reducing
speed or widening the turning circle.
Continue to align the heading
Steer the vessel on a known heading.
Note: only use the main steering compass as a known heading if
you are certain it has been checked and compensated.
Press the
button twice to display HDG / +000
Press the button to enter Edit Mode
Press the
and buttons to change to the known value. The
lower digits will display the offset entered.
Press the
button to exit Edit Mode
Press and hold the
button to exit Setup and return to normal
operation.