Zhejiang Dahua Vision Technology Co. Ltd X820UAV-S User Manual
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Figure 4-22
Step 2 Select "Fence Type".
Figure 4-23
● ALT (Limited altitude): limit the max. flight altitude of the aircraft, but there is no limit
to the flight distance.
● Circle: Take HOME point as circle center and the set value as radius. The aircraft is
restricted to fly within the circle, and there is no limit to the altitude.
● ALT+ Circle: Take HOME point as circle center and set value as radius. The set
height is considered as max. flight altitude, the aircraft is restricted to fly within the
cylindrical area.