67
SENSORS
C
OMPASS
A green dot next to the compass indicates the H520 has been calibrated. A red dot indicates the compass
needs to be calibrated.
A
CCELEROMETER
A green dot next to the accelerometer indicates the H520 has been calibrated. A red dot indicates the
Accelerometer needs to be calibrated.
C
ALIBRATIONS
Compass
To calibrate the compass, tap the Compass soft key, then tap OK in the pop-up window on the right. A
graphical grid will display with six boxes. Each box indicates what is required to calibrate the compass. Pick
up the H520 by the two arms, with green dots, as close to the Arm joints as possible. Rotate the H520 in
the direction indicated in the box highlighted in yellow. Using the Arrow in the box to point towards the
front of the H520 (the front has the two sonar eyes). Rotate the H520 until the H520 beeps. Continue
doing the same for the next box highlighted in yellow. Upon successful completion of the Compass
calibration, the ST16S will return to the Sensors Setting Menu and a green dot will be displayed next
compass. A compass calibration fail will be indicated by all six arm lights on the H520 blinking red. If the
calibration fails, try again after moving the aircraft away from any metallic objects nearby.