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X
Xenon
A type of enclosed arc lamp which is commonly used in strobelights. It
creates short bursts of bright high color temperature light. Some xenon
lamps, combined with special power supplies create continuous output and are
used in followspots. Xenon lamps are not generally dimmable.
XLR
Multipin metallic connector. (3 pin for normal sound use, 5 pin for DMX,
Color Scrollers etc). Sometimes called Cannons after the original
manufacturer.
The UK standard for wiring the 3 pin connector is as follows : Pin 1
(Screen), Pin 2 (+ve / "hot"), Pin 3 (-ve, "cold"). (Xternal, Live, Return).
A 5 pin connector for DMX512 use has the following connections: pin 1 =
screen, pin 2 = data -ve ("cold"), pin 3 = data +ve ("hot"), pin 4 and 5 are
not used by many manufacturers. A comparison is made between the signals
carried by the two data cables, and any differences are cancelled out,
meaning that noise/data error reduction is very effective.
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