User's Manual

mn100 Digital Display
10
2.6 Chapter and Page Description
Speed Chapter
(1) SPEED
The vessel’s Actual Speed through the water as measured
by the Speed Transducer.
(2) VMG TO WIND
The vessel’s calculated Speed Directly Upwind. This value
is calculated by the instrument from the Boat Speed and
Apparent Wind Angle.
(3) VMG - WP
The vessel’s calculated Speed directly towards the active
Waypoint. This value is calculated by a GPS receiver or
plotter.
(4) LOG
The total distance travelled by the vessel since installation
of the instrument or since a Factory Reset.
(5) TRIP
The Distance travelled since the last Trip Reset. To Reset
see page 18 -s1.
(6) SPEED MAXIMUM
The Maximum Speed encountered since switch on or since
the last
Maximum Speed Reset. To Reset see page 18 -s4.
(7) SPEED AVERAGE
The Average Speed attained since switch on or since the
last
Average Speed Reset. To Reset see page 18 -s5.
Depth Chapter
(8) DEPTH
The Actual Depth beneath the vessel as measured by the
Depth Transducer. The displayed value will be affected by
any keel or waterline offset added (see page 24).
Setup and Calibration
27
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.