Simrad NX45 Specifications Page 88

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Simrad NX40/45 Installation and Operation Manual88
Head up means that the radar image
rotates underneath your boat, so the
direction in which you are heading
is pointing to the top of the radar
screen. You can easily compare the
visual view in front of your boat with
the radar screen.
Course up works only when COG
data or heading data from a heading
sensor is available and there is an
active route. It means that your
desired heading is always pointing to
the top of the radar screen so that
you can compare the leg bearing
of the active route with the radar
screen. (If you’re in Course up
rotation but don’t have an active
route, the radar uses Head up
rotation until a route is made active.)
Motion mode True motion mode is not available
if there is no position data, and no
heading or COG data.
There are two choices:
Relative (RM). Your boat remains in
a fixed location on the radar screen
and all other objects move relative
to your position. (You can choose the
position of the fixed location). RM is
the default.
True (TM). Your boat, and moving
targets, move across the radar
screen as you travel. All stationary
objects remain in a fixed position.
You must have position data, and
heading or COG data for this option
to be available.
Interference filter If the radar on another boat is
operating at the same frequency as
your radar, it can cause interference
patterns on the radar window.
Interference patterns always appear
in a different place with each sweep.
They can be randomly scattered
bright dots or dotted lines that
extend from the center to the edge of
the radar window, often producing a
spiral pattern. Generally, the stronger
the interference, the wider the
interference lines.
Use the interference rejection option
to reduce both the interference
patterns and the width of the
interference lines.
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