Specifications

Simrad NX40/45 Installation and Operation Manual98
Temperature filter Water turbulence and currents
cause the water temperature to
fluctuate slightly. To give stable
readings, the unit calculates
these values by taking several
measurements and averaging them.
Set the Temperature filter to the
lowest value which gives stable
readings. The range is 1 to 30
seconds or Off (0).
Keel Offset A depth transducer measures
depths below where the transducer
is mounted on the boat, usually
the bottom of the boat. The unit
calculates the depths to display by
adding the keel offset to all measured
depths.
A Have a zero keel offset to display
depths below the transducer.
B Enter a positive keel offset to
increase the shown depth. For
example to display the total depths
below the surface, enter the depth of
the transducer below the surface.
C Enter a negative keel offset to
decrease the shown depth. For
example, to display the depths of
clear water below the boat, enter
minus the depth of the deepest part
of the boat below the transducer.
Speed range The maximum reading to display on
an analog boat speed gauge. Choose
a range suitable for your boat.
19-14 Setup > Time
> Time
Local offset The difference between local time
and UTC (GMT). Change local offset
when daylight saving time starts and
ends. The range is 0 to ± 13 hours, in
30 minute steps.
To setup local offset
Select Local offset > >
Time format The options are 24 hour or 12 hour.
Date format The options are dd/MMM/yy, MMM/
dd/yy,
dd/MM/yy or MM/dd/yy.