senseFly swinglet User Manual page 139

Poor GPS
∗
coverage
Data uplink lost
(if enabled)
⁵³ see section 'Critical failures' on page 141
GPS signal coverage is low. This may be due to moun-
tains or tall buildings blocking satellite signals. If cov-
erage degrades any more a Critical failure will be ac-
tivated and an emergency landing will be initiated⁵³.
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: If this occurs once or twice, click 'ACK
WARNING' and continue normal flight. If this warning
appears more often, land as soon as possible and wait
for better conditions for satellite signal reception. Al-
ternatively, move away from objects that may disturb
satellite signals such as mountains or cellular anten-
nas.
∗∗
This warning occurs if the swinglet CAM does not re-
ceive 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 mo-
dem, antenna positioning or interference. .
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 145.
Troubleshooting
139