FRONT
LED
FRONT
LED
LRP GRAVIT GPS VISION
2.4GHZ F.H.S.S.
COMPASS CALIBRATION
Compass calibration
The compass calibration is NOT necessary before EACH start.
It has to be done only:
a) before your maiden flight
b) when you fly in an area which is hundreds or more kilome-
ters away from your last flying area
c) when you experience strange, uncontrollable flying behavi-
our in a GPS-assisted flight mode during your last operation
d) if your Status-LED keeps on showing a yellow blinking code,
which does not go away even after you have put the Gravit on
different, NON-metal places.
PLEASE NOTE:
Also check the connector that goes into the
compass module on your Gravit’s landing feet. If this connec-
tor is not properly seated into the compass module’s socket,
this will also result in a yellow status-LED.
GRAVIT GPS VISION PRO ONLY:
Before performing the compass calibration, make sure that the
gimbal is NOT connected to power. Check the red 2-pin plug
that comes from your gimbal. If it is connected to the socket
coming from the Gravit‘s bodyshell, unplug it for the duration
of the compass calibration. Don‘t forget to plug the gimbal
back in after you did the calibration.
The compass calibration is done as follows (also see pictures):
1) Turn on your Gravit first, then turn on your transmitter. Wait
until the initialization process has been finished (during
initialization, the status LED will continuously blink BLUE-
GREEN-RED—PAUSE—repeat) and the Gravit is blinking
either blue or blue/red (SWA/SWB=Pos.0).
2) Wiggle the right 3-position-switch (SWB) of your transmit-
ter completely up and down quickly until the Status LED of
your Gravit GPS is blinking green rapidly (leave SWB in top
POS. 0 after doing so)
3) Grab the Gravit on the landing feet and hold it straight/hori-
zontally away from you with the Status LED facing you.
IMPORTANT:
Be sure NOT to touch the compass, which
is mounted on the lower rear part of the left landing gear
when holding the Gravit. You can also (additionally) grab
around the rear left arm of the Gravit to get a firm grip on
your quadrocopter.
4) Move slowly around your own axis in counter-clockwise di-
rection until the rapidly blinking green Status LED is starting
to blink with short pauses in between.
5) Tilt the Gravit forwards by 90°, so that the front is facing
straight downwards and the Status LED is facing to the sky
6) Repeat step 3) and rotate around your own axis counter-
clockwise until the Status LED is blinking a pattern again
7) The compass has been successfully calibrated. Put the
Gravit back on the ground, the Status LED should now blink
only blue. In case the status LED is also blinking red, please
wait until the red blinking has stopped, indicating that
enough satellites have been found.
8) In case the calibration fails, unplug the battery from the
Gravit, turn off your transmitter and start over again.
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