Manual

Chapter 6 Firmware Updates and Maintenance 87
EVO Max 4T User Manual
6.2 Equipment Calibration
6.2.1 Compass Calibration
The compass has been calibrated at the factory, and no user calibration is required under
normal conditions. If the compass displays an error message, the flight direction of the aircraft
is inconsistent with the control input direction, or the flight location deviates too much from the
calibration location, please follow the steps below to calibrate it.

The compass is very sensitive to electromagnetic interference, which can cause compass
errors and reduced flight quality. If the compass s
till does not work normally after
calibration, you can move the aircraft to another location to calibrate again.

Choose an open outdoor area.

Keep away from all sources of magnetic interference, such as magnets or concrete rebar.
Proximity to large structures may also affect calibration results.

Keep away from underground and overhead power transmission lines.

Do not carry magnetic materials with you.

Keep away from all electronic devices that may interfere with calibration.

During the calibration process, please do not turn off the power of the aircraft or start the
motors.
1) After turning on the aircraft and the remote controller, click "Settings" > "Compass
Calibration" > "Start Calibration" in the main interface of the Autel Enterprise App. When
the calibration process begins, the aircraft tail LED turns yellow and blinks.
2) Hold the aircraft to keep it in a horizontal direction, and rotate the aircraft 360°
horizontally until the LED indicator on the rear arms of the aircraft turns green and
solid.
3) Hold the aircraft to keep it in a vertical direction with the nose up, and rotate the aircraft
360° vertically until the LED indicator on the tail of the aircraft turns green and solid.
4) Hold the aircraft with its nose facing left and its sides facing down, and rotate the
aircraft 360° sideways until the LED indicator on the tail of the aircraft turns green and
solid.

If the calibration fails, the LED indicator on the rear arms of the aircraft will turn solid red,
and the above steps should be repeated at this time.