L-3 TECHNOLOGIES ESI-500 - Figure 3-15: Synthetic Vision Display Features

ESI-500
Pilot’s Guide3-20
Display Features
Figure 3-15: Synthetic Vision Display Features
The synthetic vision attitude background including terrain
display, obstacles, and terrain alert coloration are for
situational awareness to aid in visual acquisition of terrain
and obstacles only and should not be used for terrain
avoidance, navigation, or as a primary means of terrain
alerting.
WARNING
The Synthetic Vision System and alerting functions use QNH
(Barometric Pressure for Local altimeter Setting) operations. For QFE
(Altitude Above Ground) operation the Synthetic Vision System must
be disabled using the menu.
It is recommended that the SynVis mode be disabled using the Pilot
menu for QNE operations above transition altitudes (18,000 ft in the
United States). This is where the barometric altimeter setting is set to
the standard setting of 29.92 inches of mercury, or 1013 hPa or mb.
Transition levels may differ from country to country.
NOTES
QNH is the barometric altimeter setting that causes an
altimeter to read aireld elevation above mean sea level
when on the aireld.
QFE is the barometric altimeter setting that causes an
altimeter to read zero when at the reference datum of a
particular aireld (in practice, the reference datum is either
an aireld center or a runway threshold).