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Useful CCTV definitions (Helpful for understanding Spec sheets)
Click on a letter
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
V
VDA: Video distribution amplifier. An amplifier that boosts a video signal so it can be distributed to several monitors simultaneously.
VMD: Video motion detector. A detector that generates an alarm when a change in the video occurs, generally motion induced.
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