Alpine INE-W970HD Owners Manual - Page 87

About the Rear Camera Guideline To display the guideline, turn guideline on. Also, to adjust the guide, see "Setting Camera Guideline". You can also turn off the guideline in the Rear camera display screen. ■■ Indication mark meaning When the car is put into reverse gear, the monitor switches to the rear view camera image. Guides appear to help visualise the car's width and distance from the rear bumper. ■■ Distance guidance mark The distance guides represent the ground level distance from the rear bumper. It is difficult to accurately estimate the distance to objects above ground level. In the following example, the distance to A is 0.5 m and the distance to B is 1 m. C B A (about 0.5 m) about 1 m 1. Car width extension marks (red, yellow and green in order of distance) If properly calibrated, the marks indicate the car's width. This helps guide the car's path when backing up in a straight line. The marks represent the distance from the rear of the car (from the rear end of the bumper). The marks do not move in synchronisation with the steering wheel. Set the marks to suit the car's width. 2. Distance guidance marks The marks represent the distance from the rear of the car (from the rear end of the bumper). • The marks do not move in synchronisation with the steering wheel. • We recommend that you measure the actual distance to the marks when parked on a level surface. • Depending on the condition of the car or road surface, the range of vision may vary. • The camera has a limited range of vision. Objects at extreme angles to the camera (e.g. under the bumper or at opposite ends of the bumper) may not be in the its field-of-vision. • The rear camera image may have a tint which is different from the actual surroundings. • Depending on the car, the guidance may deviate to the right or left. This is not a malfunction. In the screen, according to the distance guidance marks, the truck seems to be parked about 1 m away (at the position B). In actual fact, however, if you reversed to position A, you would collide with the truck. In the screen, positions A, B and C seem to be located in order of proximity. However, in actual fact, the position A and C are the same distance, and B is farther away than positions A and C. • The car width extension mark represents the distance to the road surface. The distance to an object on the road is not accurately represented by the guides. Error between the screen and the actual road surface In the following conditions, errors are produced between the screen guidance and the actual road surface. (The illustrations represent a case when the camera is installed in the standard position.) ■■ When there is a steep upward slope behind the car (example) Distance guidance marks 87-EN