Figure 31. NAVconfig Surface tilt properties in the Environment section within
NAVconfig.
Enter the heading (compared to true north) of the uphill direction and the gradient of the
surface.
The RT does not change the roll and pitch outputs because of these settings. Instead there
are additional outputs, surface roll, surface pitch and surface heading that are output and
the transformation is applied to these outputs. Note that for surfaces with a small gradient
the surface heading is almost the same as heading.
Enable local coordinates
The RT can output the displacement from an origin in a local co-ordinate grid. To use
this option a “zero” location or origin must be chosen; the latitude, longitude and altitude
for the origin must be entered into the RT. If an RT-Base S is available, then these will
be shown on the LCD. A rotation can also be specified to rotate the xy directions.
Figure 32. NAVconfig Enable local co-ordinates in the Environment section
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