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P4 Multispectral User Manual

The 3D Infrared Sensing System is only active in Beginner mode* and Tripod mode*. Fly with caution.

The performance of your Vision System and Infrared Sensing System are aected by the surface

being own over. Ultrasonic sensors may not be able to accurately measure distances when

operating above sound-absorbing materials and the camera may not function correctly in suboptimal

environments. The aircraft will switch from P-mode to A-mode automatically if neither vision sensors

nor ultrasonic sensors and Infrared Sensing System are available. Operate the aircraft with great

caution in the following situations:

a) Flying over monochrome surfaces (e.g. pure black, pure white, pure red, pure green).

b) Flying over a highly reective surfaces.

c) Flying at high speeds of over 31mph (50kph) at 2 meters or over 11mph (18kph) at 1 meter.

d) Flying over water or transparent surfaces.

e) Flying over moving surfaces or objects.

f) Flying in an area where the lighting changes frequently or drastically.

g) Flying over extremely dark (lux < 10) or bright (lux > 100,000) surfaces.

h) Flying over surfaces that can absorb sound waves (e.g. thick carpet).

i) Flying over surfaces without clear patterns or texture.

j) Flying over surfaces with identical repeating patterns or textures (e.g. tiling).

k) Flying over inclined surfaces that will deect sound waves away from the aircraft.

l) Flying over obstacles with too small eective infrared reective surface.

m) DO NOT position the sides of two aircraft toward each other to avoid interference between the

3D infrared modules.

n) DO NOT cover the protective glass of the infrared module. Keep it clean and undamaged.

o) Flying at high speed at low altitude (under 0.5 m).

Keep sensors clean at all times. Dirt or other debris may adversely aect their eectiveness.

Vision Positioning is only eective when the aircraft is at altitudes of 0.3 to 10 meters.

The Vision Positioning may not function properly when the aircraft is ying over water.

The Vision System may not be able to recognize pattern on the ground in low light conditions (less

than 100 lux).

Do not use other ultrasonic devices with frequency of 40 kHz when Vision System is in operation.

Assisted Braking from Obstacle Sensing

are detected around the aircraft. Note that Obstacle Sensing function works best when lighting

is adequate and the obstacle is clearly marked or textured. The aircraft must y at no more than

31mph (50kph) to allow sucient braking distance.

Follow the steps below to use Vision Positioning:

1. Turn on the aircraft. The aircraft status indicator will ash green two times, which indicates the

Vision Positioning is ready.

2. Gently push the left stick up to lift o and the aircraft will hover in place.

* This mode will be supported later.

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