UDI R/C U31W Navigator Operation Manual page 11

Picture 12
4. After activating the motors, push up the left stick slowly to fly the drone, and
pull down the left stick slowly to its lowest position to land the drone smoothly.
5. It is recommended to repeat Step 4 for practice.
6. Adjust relative transmitter trimmer button to adjust the rudder if the drone tilts
to one side when flying.
Calibration Instruction
Please follow the below steps to calibrate the drone if its flight becomes unstable
after a crash and it cannot be adjusted by using the trimmer button.
1. Power off the drone, then turn off the transmitter switch.
2. Turn on the transmitter switch, push the left stick all the way down to the
lowest position (Picture 13) and then release it. The left stick will return to the
middle position automatically (Picture 14). At that time, the transmitter will be
ready for frequency pairing mode.
3. Power on the drone and put it on a flat surface in a horizontal position. The
drone bodylights will change from flashing to solid bright, indicating a successful
frequency pairing.
4. Do not move the left stick before successful calibration. Push the right stick
as picture 15 below shows and then release it. The drone bodylights will start
flashing, indicating that the drone is calibrating. When the drone bodylights become
solid, it means that calibration has been successful.
Picture 15
Notice: When the drone has experienced a severe crash, and the gyro recovery is impossible
causing control difficulties; the drone should be switched off and the calibration
process repeated
Picture 13 Picture 14
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