164. CAMERA / LED ARRAY,ADJUSTMENTS.For optimum picture quality the camera lensmust be as close as possible to the dome’sinside face, without touching. However, the foamring around the lens should be adjusted to sealagainst the dome, minimizing any side lightinterference, but without obstructing the field ofview.The lens dome clearance and camera viewingangles can be achieved through a combinationof adjustments available on the PTT bracket.For example: If the lens touches the dome,loosen the side adjustment knobs and slide theCamera/LED Array assembly away from thedome. See Figure 4-2 on page 18.The Camera and PTT bracket can also berotated horizontally by loosening the baselocking knob. See Figure 4-3 on page 19.The camera picture can be adjusted by twistingthe PTT disc. See Figure 4-4 on page 20.The LED Array brightness has been set at thefactory before shipment.For photocell brightness adjustment seeFigure 2-2 on page 8.