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Changing/Focusing a Lens
The remote camera units are supplied with 3mm or 6mm lenses installed as indicated on the bottom of
each remote camera box. Additional 3mm and 12mm replacement lenses have been provided to
change the field of view and distance of two cameras as needed. The 3mm lens will provide a wider
field of view while the 12mm lens will provide a narrower field of view for longer range.
To change a lens the camera must be plugged in near the DVR so that the image may be focused while
the new lens is installed. With a short CAT-5 cable, plug the camera into the VPD near the DOG Base
Station so that the monitor is visible. Select the channel that the camera is plugged into by pressing the
corresponding number button on the DVR. This will put the camera view in full screen mode.
Unscrew the end cap on the camera as shown in the figures below. Be careful not to tip the cap when
removed as there are some small parts that may fall out. Once the cap is removed, locate the set screw
in the rim of the camera body and use a very small screwdriver (supplied with DOG Kit) to loosen it
slightly. Now unscrew the lens by fingertip until it comes out.
Screw in the replacement lens and turn it until the picture on monitor is in focus. Once in its best focus
position, tighten the lens down by turning the set screw with the small screwdriver. Screw the cap
back on by fingertip.
Figure 25: Changing//Focusing a Lens
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