SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
Air Data System (ADS)
3-4
The barometric altimeter has the following features:
D Counter drum display of barometrically corrected pressure altitude
from the DADC, marked in 20--foot increments.
D Pointer display of altitude between 1000--foot levels with 20--foot
graduations.
D Black--and--white crosshatch in the left--hand digit position of the
counter display for altitudes below 10,000 feet.
D Barometric pressure counter, set by means of the BARO knob, that
displays barometric pressure in inches of mercury and millibars.
D Failure warning flag that is displayed when one of the following
occurs:
— The error between the altitude displayed and the altitude signal
received is excessive
— The DADC goes invalid
— The barometric altimeter loses primary power.
D Altitude alert annunciator that lights when the aircraft is within 1000
feet of the preselected altitude during a capture maneuver.
NOTE: The light goes out when the aircraft is within 250 feet of the
selected altitude. A momentary audio alert is a backup
indication of when the aircraft is 1000 feet from the
preselected altitude, or when it deviates more than 250
feet from the selected altitude after capture.
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