User's Manual

9.2 HORIZONTAL CALIBRATION

Horizontal calibration is required when the X4 is drift during flight.

Please follow the calibrating procedures:

1) Push the left stick to the most right side, and move the right stick left to right quickly until the 4

LED indicators blink in yellow slowly.

2) Calibration succeeded when the 4 LED indicators stop blinking slowly.

Push the left stick to the

most right side

Move the right stick left to right

quickly

START

Calibration done

9.3 ROTATION CALIBRATION

Rotation calibration is required when the X4 is yaw during flight.

Please follow the calibrating procedures and be sured that the X4 always on horizontal surface:

1) Push the left stick to the top side, and move the right stick up and down quickly until the 4 LED

indicators blink in yellow slowly

2) When the 4 LED indicators turns into red and blink circularly, rotate the X4 horizontally

clock-wise until the 4 LED indicators remain lighted in green

3) When the 4 LED indicators turns into red again, rotate the X4 horizontally clock-wise until the 4

LED indicators explosion-flashing simultaneously

4) Calibration done

Push the left stick to the top

side

Move the right stick up and down

quickly

Rotate the X4 clock-wise until LED

indicators remain lighted in green

START

Calibration done

Rotate the X4 clock-wise until

LED indicators explosion-flashing

simultaneously