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5 Calibrating the Compass
IMPORTANT: Make sure to perform the Compass Calibration procedures prior to the first flight.
The compass is very sensitive to electromagnetic interference which causes abnormal compass data and leads to
poor flight performance or even flight failure. Regular calibration of the compass enables the compass to perform at
its optimal level.
5.1 Calibration Warnings
（1） DO NOT calibrate your compass where there is a possibility for the existence of strong
magnetic interference such as magnetite, parking structures, and steel reinforcement
underground.
（2） DO NOT carry ferromagnetic materials with you during calibration such as keys or cellular
phones.
（3） Compass Calibration is very important; otherwise the flight control system will work abnormally.
5.2 Calibration Procedures
Please carry out the calibrating procedures in the flight field before flight. Please watch the quick start video of the
PHANTOM 2 for more compass calibration details.
Normal LED
Quickly flip the switch S1
360
o
Rotate the aircraft
horizontally
360
o
Rotate the aircraft
vertically (Nose downward)
Start horizontal calibration
Start vertical calibration
Succeed
Fail
Position-1->Position-3->Position-1
Flip no less than 5 times
Start
cali
LED Flight Indicator
Position-1->Position-3->Position-1
Flip once
Position-3
LED Flight Indicator
LED Flight
Indicator
Re-calibrate
Position-1
Position-3
5.3 When Recalibration is required
（1） When Compass Data is abnormal, the LED flight indicator will blink alternating between red and yellow.
（2） Last compass calibration was performed at a completely different flying field/location.
（3） The mechanical structure of the aircraft has changed, i.e. changed mounting position of the compass.
（4） Evident drifting occurs in flight, i.e. the aircraft doesn’t fly in straight lines.
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