Garmin GPSMAP 196 - Manual (Page 54)

E6B Tab
The E6B tab in the Main Menu calculates Density Altitude, True
Airspeed, and Winds Aloft (Head Wind, Tail Wind, Wind From, and
Wind Speed), based on information you enter.
To open the E6B tab of the Main Menu:
1. Press MENU twice to open the Main Menu.
2. Highlight E6B from the vertical list of tabs.
Calculated
Figures
Calculated
Figure
Calculated or
User-Entered
Figure
E6B Tab
Indicated Altitude—required entry for density altitude/true airspeed
calculation. Enter the aircraft’s altimeter reading.
Calibrated Airspeed—required entry for density altitude/true
airspeed calculation. Enter the aircraft’s airspeed indicator.
Heading—required entry for winds aloft calculation. Use heading
from the aircraft’s heading indicator or directional gyro.
Wind From—(calculated figure) determined from entry of heading
and true airspeed.
True Airspeed—(calculated or user-entered figure) determined from
entry of calibrated airspeed, baro pressure, and total air temperature.
Also can be entered directly for winds aloft calculations.
Baro Pressure—required entry for density altitude/true airspeed
calculation. Use current altimeter setting (barometric pressure).
Total Air Temp—required entry for density altitude/true airspeed
calculation. Total Air Temperature (TAT) is the temperature of the
air including the heating effect caused by speed. The temperature
reading on a standard outside air temperature gauge found on most
piston aircraft is TAT.
Head Wind—(calculated figure) determined from entry of heading
and true airspeed.
Wind Speed—(calculated figure) determined from entry of heading
and true airspeed.
Density Altitude—(calculated figure) determined from entry of
indicated altitude, barometric pressure and total air temperature.
46 GPSMAP 196 Pilot’s Guide
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