Section 3 Display Symbology
3-4
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
1
st
Ed Nov 2018
Press
BARO (R2)
to enter altimeter setting mode and view the altimeter
setting in inches of mercury (inHg) or millibars (mbar) value in the lower
right corner. Scroll
CW to increase or CCW to decrease the QNH. Push
to enter the new value. The altimeter setting is immediately below the
altitude readout box and digitally displays the altimeter setting in either
inches of mercury (inHg) or millibars (mbar) according to the pilot-selected
units.
When QFE altimeter setting is selected, QFE is annunciated immediately
below the altimeter setting. When QNH altimeter setting is selected, no
mode is annunciated below the altimeter setting
QFE:
Barometric setting resulting in the altimeter displaying height above
a reference elevation (e.g., airport or runway threshold).
QNE:
Standard barometric setting (29.92 inHg or 1013 mbar) used to
display pressure altitude for flight above the transition altitude.
QNH:
Barometric setting resulting in the altimeter displaying altitude above
mean sea level at the reporting station.
Synthetic Vision - QNH
Basic Mode - QNH
Synthetic Vision - QFE
Basic Mode - QFE
Figure 3-7: Altimeter Setting
3.2.2. Selected Altitude Sub-Mode (Target Altitude)
When in selected altitude sub-mode, the altitude scale has a pilot-settable
target altitude bug geometrically interacting with the altitude box pointer.
The target altitude bug value has a resolution of 100 ft., and a range from -
1000 ft. to 20,000 ft.
