GeoVision GV-BL110D, User Manual, Page: 154 / 393

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6. Adjust the Focus Screw and the Zoom Screw of the camera slowly
until the focus value reaches the maximum. For example, the
maximum focus value in Step 4 is 103. For locations of adjustment
screws in each model, see
10.2.2 Locations of Adjustment Screws .
Note:
1. Do not over tighten the screws. The screws only need to be as
tight as your fingers can get them to be. Do not bother using any
tool to get them tighter. Doing so can damage the structure of lens.
2. The maximum focus value may vary when the environment
changes.
10.2.1 Using Focus Adjustment Cap
There are two types of Focus Adjustment Caps for GV-VD120D / 121D ,
VD-220D / 221D and VD-320D / 321D . Hold and close the Focus
Adjustment Cap to the lens in order to simulate the IK10+ housing cover
before installing it.
Focus Adjustment Cap Type I:
Hold the Focus Adjustment Cap
on top of the camera view and
slightly tilt to one side to adjust the
image.