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The choice of location should respect the certain restrictions.
Distance restrictions
Plate cameras must be placed between 4 and 16 meters from
the spot where the plates are filmed.
At a distance of under 4 meters, it becomes impossible to
respect the angle constraints described hereafter and over 16
meters, the lens can't zoom enough and the integrated
infrared light is not powerful enough. The camera has to be
used between 4 and 16 meters.
4m
6m
8m
Between 4 and 16 meters:
The setup of the camera is critical. In-between theses
distances, the camera may have its reliability decreasing
below than 90%. The infrared illuminator has a 20° angle of
illumination which means it can't illuminate the entire zone
filmed at theses distances. The only way to bypass this
restriction is to zoom more with the lens, in order to have the
width of the licence plate equal to a third of the image width.
The width of the licence plates in the view of the
camera must be 1/3 the width of the camera image.
Please refer to section "Adjustment of the camera"
chapter "Adjustment of the lens".
Focus
4 to 16 meters
10m
12m
14m
Camera location
0 m
4 m
8 m
16m
12 m
16 m
Use the lens only in the FILMED ZONE settings.
XCI-NPR
20°
Zone of
illumination
Licence Plate
Zone of filming
50 cm
Licence Plate
width
1,5 m
Page 14 / 42
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