SnapShot Camera Installation Guide
Page 4 of 12
2. Siting the Camera
The camera is designed to cover a single traffic lane only, typically 3 to 3.5
metres wide at the capture point. Any attempt to cover two traffic lanes
with a single camera will result in the ANPR processor missing vehicles
and mis-reading plates.
The camera should be positioned adjacent to the target traffic lane - do not
attempt to view one lane across another. Always try and position the
camera close to the head-on position but not exactly perpendicular to the
plate, since unwanted reflections from the infrared illuminator can occur in
some situations. The ideal angle of view is between 5º and 25º from the
normal path of the vehicles. If mounting the cameras at height, ensure the
cameras are not tilted down more than 25º from the horizontal.
Vehicles should always be viewed from the front because rear plates offer
a much lower success rate due to tow bars, cycle racks, winter dirt, etc.
Also, if possible, try and avoid locations where the camera views directly
into a rising or setting sun.
If the camera is to be used in conjunction with vehicle barriers or gates, the
camera is best positioned adjacent to them; siting the camera further into
the site often results in viewing obstructions from the barrier arm or gates
themselves. Conversely, placing a camera in advance of the barrier is
okay, providing the cameras are not intended to open the barriers
automatically (using our Barrier Relay Controller). This is because
cameras which control vehicle barriers must view the first vehicle in the
queue for the system to operate correctly and this can only be achieved
when the cameras are adjacent to the barrier itself.
Important!
The long range versions of this camera must be installed in a
location which avoids any possible eye safety hazard, Please refer to
page 2 of this manual for further information.