Technical Manual

10
Repeat Steps 1 through 4 for all cameras
before continuing.
STEP 5. Plug the power adapter into a surge protector* or turn on the power panel.
*When selecting a surge protector, it is STRONGLY recommended to use one that is UL-1449 rated, for a clamping voltage
of 330 or lower, a Joule rating of at least 400 and a response time of 10 nanoseconds or less.
STEP 3. Connect the power lead on the power splitter to the
camera power adapter. DO NOT plug the adapter into an
outlet at this time.
STEP 4. Connect the BNC connector on the other end of the video/
power cable to a Video In port on the back of the DVR.
ADJUSTING ZOOM AND FOCUS
Varifocal model cameras only.
Certain camera models feature varifocal lenses which allow the user to adjust
the zoom and focus of the camera to optimize it for the desired field of view.
EXTERNAL ADJUSTMENTS
Some “bullet” cameras, such as the QH8005B, have their Zoom and Focus
adjustment screws located on or near the lens (shown at right). These cameras
will come from the factory set for the widest field of view, meaning that it has
the lowest magnification. Turn the Zoom screw clockwise to increase the
magnification and then adjust the Focus until the image is clear.
HINT! It can be difficult to know what the right zoom and focus settings are and these adjustments are best made
when the camera is at its intended location. There are several methods one can use to ensure proper adjustments:
1. A second person located at the DVR, monitoring the picture from the camera and communicating with the person
making the adjustments.
2. Using a smartphone running the appropriate Q-See mobile monitoring app to view the camera.
3. Use of an LCD camera tester which temporarily connects to the video lead labelled TEST (not the HD video lead).