System Calibration; Horizon Alignment Calibration (Ahrs) - AvMap Ultra EFIS User And Installation Manual

AvMap Ultra EFIS

3. System Calibration

There are two type of calibration procedures;

1. Horizon Alignment calibration (AHRS)

2. Magnetometer (compass) calibration
3.1 Horizon Alignment Calibration (AHRS)
Scenario A –Horizon Alignment Calibration NOT required
It is assumed that Ultra EFIS is installed in an instrument panel that is completely
perpendicular compared to the level & straight flight attitude and aligned with the Lateral
axis of the airplane.
In this case no Horizon Alignment Calibration is needed.
Normal or Vertical Axis
Level & Straight Flight Attitude
Lateral Axis
Longitude Axis
Figure 7
Scenario B - Horizon Alignment Calibration required
In case the Ultra EFIS is installed in an instrument panel that is aligned with the aircraft
lateral axis, but not perpendicular to the straight & level flight attitude, the simple Horizon
Alignment calibration procedure must be executed.
Horizon Alignment Calibration procedure
Execute this calibration procedure to align the Horizon line of the Ultra EFIS with the aircrafts
straight & level flight attitude.
The procedure needs to be performed on the ground and can be started from the System
menu.
Set the aircraft in level and straight flight attitude by using jacks or blocks (or by asking a
friend to push or lift the tail and hold).
Enter the Setup mode (See Chapter 4 System Operation) by keeping pressed the rotation
10 - User and Installation Manual