*Optimal distance calculated to allow license plates of 120 pixels wide. Most DVR application can provide readable plates larger than 80 pixels depending on level of image compression set on DVR.
The maximum angle of the unit to the car is 40º. This is both horizontally and vertically. This limits the amount of skew of the letters on the number plate. If the letters are skewed too much they will start to become unrecognizable and will reduce automatic software recognition rates.
REG
Height
‘H’
Range ‘R’
Max 40ْ
Horizontal Distance ‘D’
Figure 4 Maximum Vertical Angle
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