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©
2017 DJI All Rights Reserved.
13
Spark
User Manual
Return-to-Home (RTH)
The Return to Home (RTH) function brings the aircraft back to the last recorded Home Point. There are
three types of RTH: Smart RTH, Low-Battery RTH, and Failsafe RTH. This following section describes the
three RTH scenarios in detail.
GPS
Description
Home Point
If a strong GPS signal was acquired before takeoff, the Home Point is
the location from which the aircraft launched. The GPS signal strength
is indicated by the GPS icon ( ). The aircraft status indicator will
blink rapidly when the home point is recorded.
Low-Battery RTH
Low-Battery RTH is triggered when the DJI Intelligent Flight Battery is depleted to a point that may affect
the safe return of the aircraft. Users are advised to return home or land the aircraft immediately when
prompted. DJI GO 4 will display a notice when a low-battery warning is triggered. If no action is taken
after the 10-second warning, the aircraft will automatically return to the Home Point. The user can cancel
the RTH procedure by pressing the RTH button or Flight Pause button on the remote controller. The
thresholds for these warnings are automatically determined based on the aircraft’s current altitude and
distance from the Home Point. Low-Battery RTH will only appear one time during ight.
The aircraft will land automatically if the current battery level can only support the aircraft long enough to
descend from its current altitude.
The Battery Level Indicator is displayed in DJI GO 4, and is described below:
Smart RTH
Initiate Smart RTH when GPS is available. Tap the RTH button in DJI GO 4 and follow the onscreen
instructions. The user can also immediately exit Smart RTH by pressing the Stop icon
×
in DJI GO 4.
Pressing and holding the RTH button on the remote controller can also initiate Smart RTH. Press it again
to exit.
Battery Level Indicator
Critical Low battery level warning
(Red)
Low battery level
warning (Yellow)
Sufcient battery level
(Green)
Remaining ight time
Power required
to return home
12:29
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