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DF801B USER MANUAL
3. GPS mode and flight mode
The aircraft has built-in GPS positioning module, which will be used to position locations in autonomous flight. Follow the steps
herein and the aircraft will enter GPS Positioning Mode:
(1) The remote controller is in P (Position Hold) Mode.
(2) The GPS DOP is at a proper rate for accurate positioning.
At this time, the aircraft can hover and fly autonomously.
If any of two conditions is missing, the aircraft would automatically enter the altitude hold mode. However, due to the interference
effect of the wind force, the aircraft might drift while hovering and the functions are not able to use at all.
Notice:Autonomous flight refers to flights that are controlled by internal programming that tells where it
is positioned and where to fly, rather than a person sending radio signals, including,RTH, one key
return,way point flight and point of interest, etc.
4. RTH (Return to home)
When the aircraft enters the GPS positioning mode, the built-in GPS can automatically record its takeoff point as home point. In the
following circumstances, the aircraft will automatically initiate RTH:
Notice:When the aircraft initiates auto return to home, users can only control the function when it
has returned and starts to land.
(1) When the battery level is low, the aircraft would automatically initiate RTH.
(2) When the aircraft is disconnected with the remote controller, the aircraft would automatically initiate RTH.
In the RTH mode,if the aircraft flies under 30 meters, it will automatically ascend to the altitude of 30 meters before returning to the
home point and landing. If it flies over 30 meters, it will directly return to the home point and then land on the ground.
During the flight, ensure that the aircraft flies within the line of sight, and do not fly around the obstacles (such as buildings,
trees, etc.). Obstacles might block signals, which will lead to the disconnection between the aircraft and the remote controller,
thus triggering the aircraft to enter the RTH mode. This may cause the aircraft to hit an obstacle in the course of RTH and cause
accidents.
5. Low battery RTH
(1) Low battery RTH
During the flight, when the battery level is low, the status indicator light of the aircraft would turn slowly blinking red with a prompt
message from the APP as well. At this point, the aircraft automatically initiates the RTH mode.
Once the low battery RTH mode is enabled, you can only change the landing site but not turn it off.
(2) Critical low battery warning
When the battery level is at a critical low condition, the status indicator light of aircraft would turn quickly blinking red and the aircraft
would immediately land on the ground.
6. Control loss RTH
(1) Control loss RTH with GPS positioning
In the GPS positioning mode,if the signal of the remote controller has been interrupted, the aircraft will hover at the current altitude
for 5 seconds. If the signal has not been reconnected, the aircraft would automatically enter RTH mode.
(2) Control loss RTH without GPS positioning
When the aircraft fails to locate the position and the signal of the remote controller has been interrupted for 2 seconds, the aircraft
would automatically land.
7. Compass calibration
Notice:When changing the flight site, it is necessary to calibrate the compass before the first flight.
During usage , if the aircraft indicates with "alternating flashing blue and green lights", which means that
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