Autel Robotics EVO II Dual 640T Enterprise Bundle V3 Drone with Thermal Imaging - Manual (Page 28)

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Note
 The omnidirectional vision sensing system can sense obstacles in directions
such as front, rear, top, bottom, left, and right. However, blind areas exist in four
diagonal directions. When you fly the aircraft manually, pay attention to the
surrounding environment and prompt messages of the App to ensure safety.
 Do not operate the aircraft in a complex environment with insufficient light, or an
area with small objects (such as twigs, lines, and nets), moving objects, or
objects having transparent surfaces (such as windows) or reflected surfaces
(such as mirrors).
 When flying along with a vehicle, select an outside field or a closed road for
driving. Never use the aircraft on the highway.
1. Prerequisites
 Ensure that the aircraft is in GPS or vision positioning mode.
 The aircraft should take off when the flight LED indicator flashes green slowly or
red twice.
 When the GPS signal is weak or the vision positioning is not available (for
example, small visible texture on the object’s surface or the aircraft is flying at
an altitude above 12 meters), you should be extremely careful.
 The binocular vision sensing systems and Starpoint locating systems are
affected by the brightness and texture of the objects below the aircraft. Avoid
flying the aircraft above the following surfaces:
- A surface of a pure color
- A highly reflective surface such as a water surface
- A very bright or dark object surface
- A surface with frequently changing light
- Surfaces composed of highly repetitive patterns such as tile
- Sound absorbing surfaces such as thick carpet
- Moving surfaces such as road surface with heavy traffic
 Ensure that the binocular camera lens and sensor are kept clean.
 To avoid interference with Starpoint locating systems, do not use a 40 kHz
ultrasonic device, such as an ultrasonic range finder, fault detector, cleaner, or
welding machine.