Iteris RZ4 Advanced Installation Manual page 27

b. Is the cabinet monitor connected, adjusted correctly, and plugged in to a valid working power
source?
c. Is power correctly connected to the camera? See the "Power Connector" section of this manual
for more information.
d. Is the camera power cable correctly terminated at the cabinet? See the "Cabinet Camera Power
Connections" section of this manual for more information. Is the power "On"? Check the circuit
breaker or fuse.
e. If the LAM has a built‐in monitor, is the switch "ON"?
If you are unable to obtain a video image, contact your local Vantage Dealer or contact the Vantage
Product Support Team for assistance. See the "Vantage Product Support" section of this manual for
contact information.
Lens Adjustment Module (LAM) Field of View Adjustments
There are six push button switches LAMVIEW. The top left most switches allow you to control the zoom,
wide angle (zoom out) or telephoto (Zoom in). The top right most switches allow you to control the
focus adjustment. The focus adjustment will be discussed in detail after the section on proper FOV. The
results of pushing these switches will be evident while viewing the video monitor. The camera can be
auto focused using the Autofocus button on the bottom left and final FOV settings are stored using the
Set button on the bottom right.
Some Basic Considerations Regarding Proper Field of View (FOV)
The Stop Bar Four Lane Minimum Rule
This rule states that if the region of interest is less than four lanes, for instance a two lane side street,
the FOV should still remain approximately four lanes wide. Why? It has to do with vehicle size, if you
zoom in the FOV to less than a four lane width, the vehicles become too large. If the vehicles are too
large in the FOV, the system detection performance can be adversely affected. Can you extend the FOV
to over four lanes? Of course, with the stock variable focal length lens, up to six lanes or more can
usually be covered with acceptable vehicle size. What is the proper vehicle size? See the next rule.
The Rule of Thumb
Proper vehicle size is determined by the FOV setting, and vehicle size is important for optimal vehicle
detection performance. If the FOV is correctly set, a medium sized vehicle (sedan) in the stop bar area,
should be about the size of your thumb on a nine inch monitor. The measurement is taken from the tip
of the thumb to the first joint. This measurement can give you a ball park idea of whether or not your
FOV is correct. Larger vehicle size usually indicates that the FOV is not the minimum recommended four
lanes wide. Smaller vehicle sizes can point to other problems, causing exceptionally large FOV's. These
problems are less frequent, but can occur if the camera is mounted an exceptionally long distance from
the stop bar area or if the zoom lens range is exceeded.
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