Author: Don McClatchie

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

Post Tags:

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.

Post Tags:

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.

Post Tags:

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

Post Tags:

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.

Post Tags:

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.

Post Tags:

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

Post Tags:

video line definition video line resolution vltg-800

August 3, 2008

I am having trouble reading license plates.

Unfortunately an unaided camera does not do as good a job of reading license plates at night. They need some assistance to work well under dark circumstances. Even if the scene were well lit for observation by eye, a car presents special problems for a

Post Tags:

license plate camera reading license plates

August 1, 2008

My camera goes out of focus at night.

Have you ever wondered why Auto Iris cameras seem to go out of focus at night? Many installers have had to return to the job site at night and reset the focus of a camera to solve this problem.

Post Tags:

camera depth of field camera night focus setting night focus

July 31, 2008

Thin vertical bars 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

Post Tags:

ups interference video filter video interference

Posts pagination

Previous 1 … 24 25 26 … 34 Next

Search for:

Author: Don McClatchie

Location

Recent Posts

Product Categories

International Inquiries