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Adjust the Lens
Camera and Illuminator Installation Requirements
Pole height:
6
m; standard lane width:
The
checkpoint camera
must be installed
all lanes to be
detected.
The
radar detector
is installed above the
Camera models and matching detection scenes
Camera Type
Camera Model
X2391-20-T
9-megapixel super low-
X2391-10-TL
light checkpoint camera
X2391-20-TL
M2391-10-TL
This document uses an X2391-20-T camera as an example.
A 9-megapixel super low-light checkpoint camera has four groups of RS-485 ports (D1+/D1-, D2+/D2-, D3+/D3-, and D4+/D4-). Both three-in-one intelligent traffic
illuminators (or smart LED illuminators) and radar detectors need to connect to RS-485 ports. In three-lane or four-lane detection schemes, three radar detectors are
used to measure vehicle speed and three illuminators are used to compensate light during in-vehicle target capture. However, there are only four groups of RS-485
ports. If both radar detectors and three-in-one intelligent traffic illuminators (or smart LED illuminators) need to be connected, the two-lane detection scheme is
recommended. If RS-485 loop vehicle detectors are used, the number of RS-485 ports may also be insufficient.
Determine Scenario
Requirements
3.75 m
above the center
of
center of each
lane.
Number of Lanes Detected
2 or 3
Install Illuminators
to the camera: ≥
Distance from the
strobe light
to the camera: ≥
Distance from the
flash light
Distance from the
smart LED illuminator
Distance from the
three-in-one intelligent traffic illuminator
Lens Configuration
2 lanes (in-vehicle target with resolution of at least 80 pixels):
Lens with 50 mm focal length
20 mm (used for large-sized high-speed vehicles occupying lanes)
3 lanes (obscure in-vehicle target):
Lens with 25 mm focal length
3
Adjust the Illuminator
Light Spot
2 m
5 m
to the camera: ≥
4 m
to the camera: ≥
Install and Adjust
Radar Detectors
4 m
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