WATTS INNOVATIONS PRISM R.P.A.S., Flight Manual

Page: 66 / 141

PRISM FLIGHT MANUAL
66
COMPASS CALIBRATION
PRISM’s compasses are calibrated from the factory and should not require an additional
calibration before flight. It is important to note however that periodically, a user may wish
to calibrate the compasses for the best performance possible. In order to calibrate the
onboard compasses, simply enter the Settings -> Sensors -> Compass menu. Then click
OK to begin compass calibration.
While the calibration is underway, hold the drone in the air and spin it around on all axes
slowly in a circular motion. The aircraft can be rotated at random. It is important that the
aircraft be rotated so that all axes are rotated during the calibration process. This may take
up to a few minutes to complete, so please be patient. During the compass calibration, a
status bar will be displayed. Once the calibration is complete, a readout will be shown to
show the health of all three compasses.
Pro-Tip: Because the aircraft can be configured with a heavy flight battery, during a
compass calibration it may be easier for the operator to only plug in 1 battery in an effort
to save weight. In addition, this may be performed with two people to make the process
easier.
NOTE:
Compass 1 and Compass 2 are the external compasses, mounted on the sides of the vehicle. Compass 3 is the
internal compass located in the Cube. Due to its mounting location surrounded by other electronics that may emit
EMF, it is not uncommon for the Compass 3 to be displayed as poor health (Yellow to Red). This is completely
normal and will not cause any in-flight issues.