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7.3.
LEVEL CALIBRATION
When flying in Trainer mode or Auto-Level mode, A3 Pro needs to know the angle of the plane in both roll and pitch
directions, this is achieved by calculating the attitude of its own. A small angle deviation caused by installation can lead to
an unexpected behavior when flying in Trainer mode or Auto-Level mode. For this reason, a level calibration is
recommended to offset the error caused by installation and to establish a proper level reference of your plane after
installing the gyro.
Before calibrating, the plane should be placed on the horizontal ground and make the wing parallel to the ground. Make the
plane slightly nose-up because a certain elevation angle is usually required to maintain level flight for most planes.
Short press the button when LED is flashing 3 times in the Function Menu, then LED will start blink Blue rapidly for several
seconds, don't move the plane and keep its attitude until the calibration is done.
7.4.
HOVER CALIBRATION
As a same reason, a hover calibration is recommended to perform after installation if you want to fly with Auto-Hover mode.
The procedure is quite similar to that of level calibration. The only difference is in the first step. Before calibrating, you need
to lift the plane and make it vertical to the ground instead of putting it on the ground.
Short press the button when LED is flashing 4 times in the Function Menu, then LED will start blink Blue rapidly for several
seconds, don't move the plane and keep its attitude until the calibration is done.
8.
SETUP MENU
The Setup Menu contains 7 setting functions which cover all parameters of the gyro you may need to setup.
Entering the Setup Menu
To get into the Setup Menu, press the button down and don't release it until LED starts flashing White quickly. (FYA: Don't
release the button when LED turns solid White yet, or you will get into the Function Menu but not the Setup Menu.)
Menu Selection
In the Setup Menu, LED will flash White several times every 3 seconds in a loop and the number of times LED flashes
shows at which function item you are currently. For example, one White flashing means the first setting "Wing Type", after
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