Airspeed Tape - Aspen Avionics Evolution Backup Display EFD1000 Pilot's Manual

Figure 2-18

Airspeed Tape

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2.3.2.2. Airspeed Tape
Airspeed is indicated by a moving airspeed tape against a fixed position airspeed
pointer, shown on the left-hand side of the Attitude Display (Figure 2-18). A numerical,
rolling drum readout indicating airspeed values to the closest one knot or mile per hour
is provided adjacent to the fixed pointer. Tick marks are provided on the airspeed tape
every 10 knots (or mph, if so configured). Airspeeds between 20 kts (23 mph) to 450 kts
(518 mph) are displayed. Outside of this range, the airspeed value is dashed.
Color speed bands are displayed on the indicated airspeed tape, corresponding to the
color arcs found on a mechanical airspeed indicator.
Color speed markers are also displayed on the indicated airspeed tape, corresponding
to the markers found on traditional airspeed indicators. All aircraft have a red line for
aircraft never-exceed speed (Vne). Multi-engine aircraft will usually also have another
red line for single-engine minimum control speed (Vmc), and a blue line for single-
engine best rate of climb speed (Vyse). If the aircraft manufacturer has published an
initial flap extension speed, a white triangle will be presented on the airspeed tape at
this speed.
Redline or Barber Pole airspeed limits that vary with pressure altitude can be displayed
when configured by the installer. The colors are configured to correspond with your
aircraft's approved markings on the mechanical airspeed indicator.
Textual Vspeed markers can also be shown on the airspeed tape (e.g., Vx, Vy, Va, etc.).
These are typically programmed at installation, and (if left unlocked during installation)
may also be adjusted by the pilot. Vspeed display can be enabled or disabled by the
pilot from Page 1 of the Menu (see Chapter 5).
Evolution Backup Display Pilot's Guide
Page 2-21
8/27/14 8:51 AM