April 2008

April 7, 2008

HOW TO USE CCTV VIDEO DI-PLEXING

The term "Di-plexing" refers to the combination of two signals into a single signal stream usually for transmission between two points. "Video Di-plexing" is the combination of two full frame real time video signals onto a single cable or twisted pair set of wires.

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video di-plexing video multiplexing

April 7, 2008

HOW TO MAKE MAXIMUM USE OF YOUR VIDEO SIGNAL

The Vertical Interval (V.I.) is the part of the video signal that tells the monitor to start drawing a new screen. It is made up of special SYNCHRONIZATION pulses with no picture elements. This part of the video allows special command and control signals to

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remote control vertical interal

April 7, 2008

CLEARER, SHARPER, PICTURES, EVERY TIME

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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automatic cable eq cable equalizer ground loop blocker

April 7, 2008

CCTV VIDEO GROUND LOOP PROBLEM SOLVING

This article will discuss video ground loop problems in CCTV installations. The cause and how it effects picture quality with solutions to eliminate the problem.

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cable equalizer ground loop blocker

April 6, 2008

HOW TO SHOOT A LICENSE PLATE WITH A CCTV CAMERA

When your customer asks you to set up a camera to grab a shot of a license plate on a car, here are a few things you will want to know.

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license plate camera reading license plates

April 5, 2008

HOW TO MAKE MAXIMUM USE OF YOUR VIDEO SIGNAL

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remote control vertical interal video cable control

April 4, 2008

FM MULTIPLEXING WHY, WHEN AND HOW TO USE IT.

First of all, what are the advantages of FM Multiplexing over SSBSC? As with all comparative discussions, we must put equal constraints upon the processes to be compared. In this case, we constrain power density but require greater Signal-to-Noise Ratio (SNR) than the available power

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fm modulation fm multiplexing fm radio modulator scpc modulator

April 2, 2008

WHY CATV CABLE DOES NOT WORK ON CCTV SYSTEMS

When pricing out the cable to use to build a Closed Circuit Television System (CCTV) to connect cameras to a central monitor location, many system operators are seduced by the much cheaper price of CATV cable. After all the specs quoted about the transmission at,

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cable equalization cable equalizer cable slope loss

April 2, 2008

WHAT IS RETURN LOSS, AND WHY SHOULD I MEASURE IT

Once upon a time, "Return Loss" was a somewhat arcane term and used mainly with regard to high frequency transmission lines and the impedance transformations that could be the result of these reflected signals. Now however, with the advent of high speed Data transmission such

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cable slope loss reflections return loss

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