Technical Publications

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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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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December 20, 2007

CCTV UPS TROUBLE SHOOTING TIPS

Many CCTV Closed Circuit TeleVision systems use a UPS Un-interruptible Power Supply to provide guaranteed continuous power to operate a surveillance system. The UPS also provides down stream voltage regulation that protects equipment in the event of under or over voltage swings that occur during

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video interference video test meter video training tools

December 15, 2007

PRODUCING HIGH PICTURE QUALITY ON LONG CCTV CABLES

Long Coaxial and Unshielded Twisted Pair (UTP) cables are a major cause of picture quality loss on Closed Circuit Television (CCTV) systems. No matter how sharp the picture a Camera can produce, or how clear the Monitor, the cables connecting them can appear to "defocus"

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November 30, 2007

PRE-DIGITAL CONTROL WHAT IS IT AND WHY IS IT NEEDED

The digital revolution has brought about many changes in the way signals are stored and transmitted. With this new age of DIGITAL SIGNAL TRANSMISSION come new problems that must be solved.

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November 1, 2007

HOW TO CREATE SUPERIOR QUALITY CCTV PICTURES ON UTP & HOW TO PROVE RESULTS WITH THE 40-40 QUALITY TEST

Very high quality video pictures can be sent over Unshielded Twisted Pair (UTP) wires, provided that suitable cable slope equalizers and amplifiers are provided to completely off-set the losses incurred when the video signal traverses the UTP cable pairs.

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cable equalization video test meter video training tools

October 20, 2007

DIGITAL VIDEO RECORDER PROBLEM SOLVING

The new digital revolution has brought us many new and exciting products for the CCTV industry. The DIGITAL VIDEO RECORDER or (DVR) may be one of the most important upgrades that can be made to any CCTV system.

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October 15, 2007

ANALOG vs DIGITAL AUDIO TRANSMISSION SYSTEMS

Good digital disc players can play back recorded music with fidelity unrivaled by any other home type tape or record system. In fact the improvement over LP discs or commercial tapes borders on the spectacular. No wonder then that many people are lead to believe

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October 7, 2007

CCTV VIDEO CAMERA FOCUS PROBLEM SOLVING

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.

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September 22, 2007

CCTV LINE-LOCK PROBLEM SOLVING TIPS

Someone once said "Timing is everything". The same thing can be said about Line-Lock CCTV camera installations. The Line-Lock feature is available on most CCTV camera's, and is used to prevent picture rolling on the monitor during switching from one camera to another.

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cctv line lock video test meter video training tools

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