Alpine INE-W611D Owner's Manual page 82

<Situation of the car>
Actual distances
Error Error
The distance guidance mark represents the distance to a flat road
surface. Therefore, in the case of an upward slope behind the car,
the distance guides are displayed closer to the rear bumper than the
actual distance. For example, if there is an obstacle on the upward
slope, it may appear farther away than its actual position.
Also, an error may occur between the guidance and the actual path
of the car on the road surface.
■ When there is a steep downward slope behind the
car (example)
<Screen>
<Situation of the car>
Error Error
In the case of a downward slope behind the car, the distance guides
are displayed farther from the rear bumper than the actual distance.
If there is an obstacle on the downward slope, it seems closer than
its actual position.
Also, an error may occur between the guidance and the actual path
of the car on the road surface.
82
-EN