Iteris RZ4 Advanced Installation Manual page 17

Note: The importance of camera centering versus camera height deserves some further discussion. It
must be recognized how important centering the camera is to optimal system performance. In many
cases centering the camera is more important than getting an additional five feet of height. For instance,
when dealing with a short luminaire arm on a very wide roadway, it might be a better choice to mount
the camera on the mast arm with a suitable extension bracket. With the right extension bracket you
should be able to achieve a mounting height of about 25 feet. While this is less than the 30 feet you
would achieve with a luminaire mounting, the ability to center the camera over the roadway in this
example makes the mast arm with a six foot extension bracket the better choice. The luminaire
mounting would get the camera up a little higher, but because the luminaire arm is short and the
roadway is wide, this would place the camera way off to one side and would adversely impact the field
of view. Remember there are two considerations for camera mounting (height and centering) and they
both must be carefully evaluated.
Maintain a Proper Camera Angle
The physical camera adjustments are done by adjusting the camera bracket mounting bolts to set the
mechanical camera pan and tilt after the camera bracket has been mounted to the arm or pole. The
camera should always be tilted slightly downward and should never be flat or beyond horizontal. When
could a camera be in danger of being beyond horizontal? When the camera is aiming uphill on a steep
grade. The distance the camera can look out is significantly reduced on approaches with a steep uphill
grade.
Bad
The camera should never be
flat or level. It should always
SUN
be angled downward.
This is especially
The camera visor
important on east and
should be pulled
west approaches.
forward as far as The sun must never be
possible without allowed to shine directly
being allowed to into the camera.
Good
obstruct the camera
field of view.
Figure 5.9
Pull the visor forward
You should have the camera sun shield (visor) far enough forward to give the camera maximum
protection from the sun. By loosening the two hose clamp set screws, the camera body can be moved
backward in the clamps, effectively lengthening the sun shield visor. Move the camera body back all the
way or until the edges of the sun shield visor are just barely visible in the top left and right corners of the
field of view. See the following examples.
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