Author: Don McClatchie

August 1, 2007

WHY AND HOW TO MEASURE CCTV CAMERA OUTPUT IMPEDANCE

In the past, CCTV cameras could be counted on to have proper 75 Ohm source impedances, but recently there have been a rash of cameras showing up on the market that do not have a 75 Ohm source impedance. In fact they exhibit an almost

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July 22, 2007

AUGMENTING CCTV SYSTEMS WITH AUDIO SURVEILLANCE

Up until now, CCTV surveillance has been mostly a Silent World. Without sound, much of what you do see on the monitor screen provides considerably less security value than if you can also hear what is going on.

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July 14, 2007

OVER-THE-COAX AUDIO FOR CCTV, A SOUND INVESTMENT

Hearing and speech are one of mankind's most powerful tools. We rely heavily on the use of these faculties for our day to day living. Yet in the average security installation this audio information is not available to security personnel responsible for the safety and

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audio add on audio intercom for video audio on video

July 2, 2007

REMOTE CONTROL OF CENTRALIZED VCR’S BY TEACHERS IN THE CLASSROOM

Two-way remote control of centralized instructional VCR's is now possible over the same coaxial cable the sends the video base-band signal to the classroom.

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June 30, 2007

Video Multi-Meters Find Niche In CCTV Market

CCTV technicians can use upgraded technology to improve skill level, which can't be measured in price.

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June 10, 2007

TV AUDIO DEVIATION: MEASURING AND SETTING IT

Measurement and control of TV audio volume has always been with us, but other concerns have usually taken precedence.

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audio agc audio gain control real-time audio

May 15, 2007

Standard and procedures for video level measurement

Setting video levels would be easy if only the cable operator could call up a test pattern when he was ready to set levels. In that sense the broadcast engineer has it much easier.

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April 7, 2007

RESTORING PICTURE QUALITY ON CCTV SYSTEMS

The quality of a CCTV picture basically depends on the number of “lines” the camera can delineate and the number of “lines” the DVR can store and the number of “lines” the monitor can display. The component with the lowest “lines” capability thus sets the

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April 4, 2007

FM SYSTEMS’ VVM digital video voltmeter

Since the introduction of VideoCipher technology for satellite program security and addressable converter operation in systems, our industry has had to pay a lot more attention to baseband signals.

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video test meter video training tools

February 2, 2007

NBC News Channel Turns to FM Systems VM-771

If there is anything the major news gathering organizations have learned over the past few years, it is that coverage of world events is no longer purely prime time, but in fact, anytime

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Author: Don McClatchie

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