Zerotech YS-S4 User Manual page 20

YS-S4 Multi-rotor Autopilot User Manual V1.4
Step 2
Select "Horizontal Alignment" in the dialog box, and then click "OK" button to start level calibration. If you don't
want to keep calibrating select "Cancel" and confirm "OK".
Step 3
Level your aircraft and carefully turn around horizontally three times. ENSURE that the GREEN LED light remains
ON during this procedure. If it turns OFF, that means the aircraft is not horizontal. Adjust the position until the
GREEN LED is back ON and continue with the rotation.
Step 4
Select "Vertical Alignment" in the dialog box, and click "OK" button to start the vertical calibration. If you don't
want to keep on calibrating select "Cancel" and confirm "OK".
Step 5
Carefully rotate the aircraft 3 times as shown below, always keeping the aircraft nose down. Ensure the GREEN
LED remains ON throughout the turn. If the LED turns OFF, adjust position until the GREEN LED is back ON and
continue with the rotation
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