IFD400 Series Pilot Guide
4-68 Aux Subsystem
UNITS CATEGORY
The settings in this category control the units in which different
quantities throughout the system are displayed.
Bearing Reference
This setting defines whether courses and headings are to be
displayed with reference to true north or magnetic north. The
factory default setting is magnetic north.
Distance/Speed Units
This setting defines the units in which distances and speeds are
to be displayed. Options are as follows:
NM/Kts – Nautical miles and knots
KM/KPH – Kilometers and kilometers per hour
MI/MPH – Statute miles and miles per hour
The factory default setting is “NM/Kts”.
Altitude/VS Units
This setting defines the units in which altitudes and vertical
speeds are to be displayed. Options are as follows:
Ft/FPM – Feet and feet per minute
M/MPM – Meters and meters per minute
M/MPS – Meters and meters per second
The factory default setting is “Ft/FPM”.
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