January 2008

January 30, 2008

GETTING THE HIGHEST PERFORMANCE FOR YOUR CCTV SYSTEM DOLLAR

Getting more performance on a CCTV system usually involves at least two different parameters and usually two are at odds to each other, the more of one, the less of the other. The two parameters in this case are PICTURE QUALITY and DISTANCE between the

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video line definition video line resolution

January 28, 2008

Narrow Band Frequency Assignment Chart

This is a frequency assignment chart for Audio Subcarriers.

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January 22, 2008

CARSON’S RULE Calculating FM Modulation Bandwidth

CARSON'S RULE: A formula is used to determine the RF Bandwidth or occupancy for an FM signal. If you are designing an FM system on microwave or satellite, you will need to take care that your signal does not cross-talk into other signals on the system.

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calculating fm bandwidth CARSON'S RULE fm bandwidth fm deviation measurement

January 18, 2008

WHY YOUR CCTV IMAGES ARE NOT AS SHARP AS THEY SHOULD BE

This graph illustrates the picture quality obtained when sending a CCTV picture through various lengths of RG59/U cable and the restoration of picture quality obtained by using the ACE472 at the monitor end of the system.

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ground loop blocker video amplifier video ground loop

January 17, 2008

PICTURE QUALITY TESTING OF CCTV SYSTEMS

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

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video test meter video training tools vltg-800

January 12, 2008

WHAT CAUSES CCTV GROUND LOOP PROBLEMS AND HOW TO FIX THEM

The annoying horizontal bars that occasionally show up in CCTV video monitors are the result of load unbalance in 60 cycle power distribution in the vicinity of a particular CCTV system. As such they may exist in one CCTV installation, but not in another essentially

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cable equalizer cable slope loss ground loop blocker video ground loop

January 3, 2008

PERFORMANCE TESTING FOR CABLE FIBER AND TWISTED PAIR INSTALLATION

This guide will lead you through the test procedure for verifying operation of installed CCTV cable, twisted pair and fiber video transmission lines. Coaxial Cable and Twisted Pair video use the same procedure to measure the transmission capability of the video line. The fiber lines

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fiber problems video fiber video ground loop video test meter

January 2, 2008

NTSC Video Pre/De-Emphasis Response Chart

The purpose of video pre and de-emphasis in transmission, why is it used?

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video de-emphasis video filter video pre-emphasis

January 2, 2008

A NEW CCTV PICTURE QUALITY TESTER

FM SYSTEMS, INC. in Santa Ana, California announces the development of the first ever test instrument to definitively measure the visual sharpness of a CCTV video picture image.

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video test meter video training tools

January 2008

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