Troubleshooting Q/A

August 5, 2008

I want to add cameras with no space for cable.

There are many applications where a video di-plexer is the right choice. This is controlled by the cost of making the connection between camera and monitor or DVR. Coaxial cable or twisted pair wire is the lowest cost way to install the run. However if

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August 5, 2008

I have jumping lines on my picture.

Have you ever had interference in your CCTV monitor that exhibited dozens of narrow vertical lines either black or white, and as thin as a pencil line. They may be staggered or jagged from the top of the screen to the bottom and may

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ground loop blocker noise filter ups interference video amplifier

August 4, 2008

My picture goes on and off every few seconds.

If you have a video image that goes on and off every few seconds your installation is probably suffering from a combination of two common CCTV problems.

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cable equalizer ground loop blocker

August 4, 2008

My picture has tearing at the top of the screen.

When Video Ground Loop problems or 60 cycle Bars occur, they are easy to see on a video monitor. They look like a horizontal band or bar across the video monitor that slowly moves up the video screen. These bars can be barely noticeable, or

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cable equalizer ground loop blocker

August 4, 2008

My fiber optic video images are not good.

Have you ever installed a fiber optic video transmitter / receiver and discovered that you were not getting a good signal output and you knew you were putting in a good video signal but you were not getting the same good signal out.

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CCTV tools cm-2 fiber optic video test meter

August 4, 2008

My camera doesn’t work well after a weather storm.

Protecting a CCTV system and it components from lightning damage does not use the same methods used to protect human life from electrical shock. In fact many of the techniques used to protect humans from lightning also cause some other problems in the CCTV system.

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cable equalizer video amplifier

August 4, 2008

Reflected glare in my picture.

Have you ever installed a CCTV camera that had a glaring “hot spot” or bright white area on the monitor, and around that bright spot the picture seemed to be out of focus or blurry, with poor picture detail? Or perhaps you had a camera

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cctv polarization polarizing filters video glare

August 4, 2008

My picture rolls when I switch cameras.

Switching between non-synchronized CCTV cameras usually causes the picture to "roll" for several frames. This wipes out the very frames that are to be recorded.

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cctv line lock line lock vi sycronization vtm

August 4, 2008

My DVR has no picture and I know I have video.

When properly installed the DVR does not output a video picture, displays a "NO VIDEO" image or has a blank blue video screen. Yet if the video input signal is connected to a monitor it displays a video picture.

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dvr overload luminance overload video overload

August 3, 2008

My CCTV picture is not sharp and clear.

All video cables in CCTV systems cause some loss of brightness and picture detail. The longer a cable is, the greater the loss. Even a few hundred feet of cable will measurably degrade a picture, while a thousand feet or so will seriously reduce picture

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video line definition video line resolution vltg-800

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