Troubleshooting
Data uplink lost
∗∗
(if enabled)
This warning occurs if the eBee RTK does not receive
any data from eMotion for more than 30 s. This can be
due to a large distance between drone and ground
station, a problem with the USB ground modem, an-
tenna positioning or interference. Having lost RTK
corrections during this period, your dronewill geotag
images with less accurate, interpolated values until
the connection returns.
Security action (if enabled): The drone flies to-
wards the Home waypoint at an altitude defined by
the Home waypoint’s Change altitude parameter (by
default, set to Highest).
User action: Try to improve radio signal quality by
following the instructions in section ‘Improving radio
signal communication’ on page 179.
Ground proximity
detected
∗∗
(if enabled)
The ground sensor on the drone has detected a
ground height above the ground of less than 30 m
during normal flight. Note: this feature should not
be depended on for avoiding obstacles, as the
ground sensor may fail to detect obstacles in cer-
tain environmental conditions⁶⁰.
Security action (if enabled): The drone circles the
current position while climbing to an altitude of 60 m
abovethe detected groundheight. Once this altitude
is reachedthe drone continues towards the next way-
point but sets the waypoint’s target altitude at 60 m
above the last detected ground height.
User action: Ensure that there are no obstacles such
as hills or buildings higher than the waypoints of your
flight plan.
⁶⁰ see section ‘Linear landing’ on page 86
173
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