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magic watch
Technical description
37
It measures distances based on the echo time principle. The four sensors
constantly emit ultrasonic signals when you reverse.
The sensors contain both transmitters and receivers, and pick up any
ultrasonic signals reflected by obstacles. The distance to the obstacle is
calculated using the echo time, and signalled on the display and by a
sequence of impulse tones. The closer the obstacle approaches, the faster
the succession of warning tones. You can deactivate the sound.
The display shows the distance in 10 cm increments and the direction
(right/left) in which the obstacle is located.
Remember that radio signals from other broadcasters with the same
frequency can cause interference and it is also possible that under some
special conditions radio signals can be absorbed or blocked. If the distance
display is not stable, check the situation and make a visual inspection if
necessary.
The MWE-1000-4FM sensors are fitted in the rear bumper, while the MW-
1000-4FM sensors are stuck onto the rear bumper.
It is possible to paint the sensors, but
not with a multicoat paint
, as this
impairs the functionality of the sensors.
5.2
Detection range
The detection range of MAGIC WATCH is divided into three zones (
6
, page 5):
z
Zone 1
This zone is the first limit range. Small objects or those with poor reflective
characteristics may not be detected.
z
Zone 2
Nearly all objects are displayed in this zone.
z
Zone 3
Virtually all objects are displayed in this zone, but some objects may come
into the blind spot of the sensors.
Situations may arise where MAGIC WATCH does not detect
objects or fails to signal their distance correctly, due to their
physical characteristics.
Note the five following examples.
_MWE-1000-4FM.book Seite 37 Dienstag, 9. August 2005 11:30 11
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