AvMap A2 ADAHRS - Manual (Page 11)

10 - User and Installation Manual
AvMap A 2 ADAHRS
User and Installation Manual - 11
AvMap A 2 ADAHRS
To access the step-by-step procedure select MENU > TOOLS > EFIS > Full Attitude
Calibration.
1. Select if the maneuver will be pitch up or down. For tricycle aircraft the pitch up maneuver
can be performed by pushing the tail (pitch up), while taildraggers will execute a pitch down
maneuver by raising the tail.
2. Reset A2 ADAHRS calibration data; select Start. Wait until the reset phase is completed.
3. 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). Press ENTER (joystick click) to record the sample in
level & straight flight.
4. Set the aircraft in a pitch up (or down) attitude and press ENTER to record the pitch up/down
sample.
WARNING : be very careful not to change the aircraft heading while performing the
pitch up /down maneuver.
5. Set values to A2 by pressing ENTER.
Wait a few minutes for the sensor to stabilize and realign. If pitch and roll after a few minutes are
still not aligned fine-tune pitch and roll offset by executing a Horizon Alignment procedure.
Horizon Alignment
Execute this calibration procedure, either:
• to compensate only pitch/roll offset between the A2 and the aircraft axis.
• to perform a fine alignment of the pitch/roll values, after a full attitude calibration.
The procedure needs to be performed on the ground and can be started from MENU > TOOLS
> EFIS > Horizon Alignment.
Procedure:
1. Make sure the aircraft is in straight and level flight attitude
2. Press the joystick to record a sample of pitch and roll angles
Figure 8