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20 C3426M-E (3/09)
To adjust the focus:
1. Loosen the focus locking screw.
2. Position the inverted dome approximately 0.125 inch (3.175 mm) from the front of the lens.
Make sure that the lens and the dome are centered (refer to Figure 10).
3. Turn the focus locking screw clockwise or counterclockwise to adjust the focus.
4. When the optimal focus is reached, tighten the focus locking screw.
Figure 10. Adjusting the Focus
FOCUS
ZOOM
CENTER BUBBLE
WITH LENS
0.125 INCH (3.175 mm)