Terrain (TER) Function
The Terrain Function shows a map of the terrain in the
area relative to your airplane’s position and altitude. The
MX20 has a standard internal based terrain function. The
MX20 also supports an external TAWS sensor. When the
external TAWS sensor is connected, it replaces the
MX20’s internal Terrain function.
Terrain information can be supplied by one of two
sources:
·
Internal MX20-Based Terrain
·
External TAWS-Based Terrain
Review the Limitations section on page iv for the
limitations that apply to the terrain data.
Internal MX20-Based Terrain
The altitude information comes from an external altitude
encoder. The displayed altimeter setting has to be
adjusted, or baro-corrected, just like the one in your
aircraft’s instrument panel.
The terrain screen has a 360-degree and a 120-degree
display. Both screens will show terrain relative to your
position. Colors used for terrain display are shown below.
Note
The Terrain function shows you the general
terrain elevations relative to your altitude
and are advisory in nature. Individual
obstructions may be shown if available in
the database. Terrain is displayed from
database information and may therefore
potentially contain some degree of error. Do
not use this information for navigation.
64
Detailed Operation
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