Precautions

1. In severe weather, such as heavy rain, heavy rain, typhoon, gale (wind speed above five), thunderstorm, hail, foggy weather, etc., the radar assisted altitude determination function may fail.

2. Under the condition that the speed of terrain change exceeds the vertical maximum maneuverability of the aircraft:

a. There is a large height drop in the normal operating environment (greater than 1 m, for example, there are ditches or ponds around it, sparse fruit trees or shrubs, and terraces).

b. The speed of the aircraft is too fast (greater than 5 m / s).

c. The surface of the object whose inclination exceeds the following values: 15 ° (aircraft speed 1 m / s), 6 ° (aircraft speed 3 m / s), 3 ° (aircraft speed 5 m / s).

3. If the distance between the aircraft and the measured surface exceeds the fixed altitude range (1.5–10 m), the radar-assisted fixed altitude function may fail.

4. Ensure that the pitch and roll angles of the aircraft attitude do not exceed 20 °.

5. Always pay attention to the relative height of the aircraft and the measured surface.

6. Use radar-assisted altitude fixing module according to local radio regulations and legal regulations.