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System Set-Up 39
VIS-CAM System
Figure 33. Readjustment of camera tilt and zoom display.
The camera mount and lens are now ready for final adjustment.
4.1.10 Finalize Lens Adjustments and Camera Aiming
4.1.10 (a) Reposition the License Plate Stand at the Nominal Trigger Line
Use your portable plate stand to position the license plate:
1. at the normally expected (nominal) trigger distance from the camera.
2. at the nominal plate height above the road.
3. at the location along the trigger line where the center of the horizontal field-of-view of this
camera is desired.
Rotate the plate on the stand until the top and bottom edges are perfectly level with the vehicle
parked behind the trigger line. Secure the plate on the plate stand so that the adjustments you have
just made do not change.
4.1.10 (b) Perform Final Camera Mount and Lens Adjustments
The final focus adjustment is facilitated using the “Focus Bar” display on the Video Window. Press
the “Focus Bar” button on the toolbar. This displays a “Focus Bar” marker on the Video Window that
will open a separate “Focus Bar” window where the pixel-values taken from the focus bar marker is
displayed. The “Focus Bar” marker cam be moved with the mouse pointer, or if the “Focus Bar”
marker is selected, using the arrow-keys.
1. Position the “Focus Bar” marker directly over the license plate.