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ARRI
German/US manufacturer of film lighting and cameras (Arriflex). Founded in
1917. Previously, Arri made a range of lighting desks (including Imagine,
Impulse, Mirage, Microlux) which were early versions of desks now produced
by ETC. ETC took over the lighting control side of Arri in 1995.
ARC DISCHARGE
An electrical discharge through an ionized gaseous atmosphere. Fluorescent
and HID lamps are examples of light sources that use an arc to produce
light.
ARC TUBE
An envelope, usually quartz or ceramic, that contains the arc of a discharge
light source.
ARTISAN
Moving light control console made by VariLite.
ARTNET
Ethernet-based lighting control protocol, developed by Artistic Licence.
ArtNet can carry up to 256 DMX512 universes on the ethernet saving on cable
runs. With the development of wireless networking the possibilities are
endless.
ASHRAE/IESNA STANDARD 90.1-1999
An industry benchmark of energy application standards for buildings created
by the American Society of Heating, Refrigeration, and Air-Conditioning
Engineers (ASHRAE) and the Illuminating Engineering Society of North America
(IESNA).
ASYMMETRIC LIGHT DISTRIBUTION
A light distribution pattern in which lumen output is directed more strongly
toward one side than another.
ATTRIBUTES
The controllable parameters of a moving light are known as the ATTRIBUTES.
All moving lights will have pan & tilt, with many having color wheels, gobo
selection, gobo rotation etc. as additional attributes.
AUTOMATED FIXTURE
A lighting fixture in which some functions have been electronically or
mechanically automated. Common automated functions include: color change,
beam movement, shutter, iris, and gobo change, as well as internal dimming
capabilities. Completely automated fixtures may also include many other
effects and functions. Automated fixtures break into two main categories:
moving mirror, and moving yoke. Combined with sophisticated computer
control, data distribution systems, and trained operator/programmers, these
lighting systems provide enormous flexibility in creating dynamic lighting
images.
AUTOMATED FIXTURE CONTROL CONSOLE
A lighting control console designed specifically for the purpose of
controlling and storing/playing back cues for automated fixtures. These
consoles often have subsystems for controlling different features of
automated fixtures such as color change, gobo, and focus position. Complex
cue structures, effects, and chases are typical features of automated
fixture control consoles. Three primary types of automated fixture consoles
include: proprietary consoles designed to work primarily with one type of
automated fixture, generic controllers which are programmed to control many
different types of automated fixtures, and hybrid controllers which combine
the functions of standard theatrical memory consoles with those of an
automated fixture console.
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