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.
Picture quality can be defined by many different parameters, but the most important from an observed picture detail point of view is the LINES OF DEFINITION as observed on a Monitor. The larger the "number of lines" that can be distinguished, the greater the detail
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
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
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,
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
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
The word digital seems to carry with it an aura of invincibility, the thinking of the day is, if it’s digital it must be perfect. This type of thinking can give an engineer a false since of security. If all the equipment used in the
This article defines a procedure that enables a CCTV installer to obtain the best possible picture that any given Camera can send over Twisted Pair wires to any given Monitor. When the Camera and Monitor are connected together "on the Bench" with short wires, what
