Leprecon LP-X24 Manual v3.2 - Manual (Page 220)

216 Glossary
LP-X24 and LP-X48 Users Manual
Dimmer (Intensity Property): The high-performance Moving Lights of today usually utilize
discharge lamps as a light source. These arc lamps are compact, efficient and have a high color
temperature. On the down side, they require a large and heavy ballast and cannot be dimmed
electrically. As a result, the dimming system usually consists of a mechanical element such as a
disk with progressively narrower slots.
Dimmer: A solid state electronic device that controls power delivered to stage instruments.
Usually operates by AC power to incandescent lamps. Typically dimmer channels are built with
10 amp (1Kw) or 20 amp (2Kw) capacity.
Dimmer Channel: The control of a single dimmer. Dimmers have only one attribute—level.
Usually dimmers are controlled via a digital industry standard protocol called DMX512.
Dipless Crossfade: See Crossfade.
DMX Mode: For some moving light fixtures, you can select between several modes of operation.
A DMX mode requiring fewer channels will support fewer features or offer control that is less fine.
A DMX mode requiring more channels will support more features or offer finer control.
Effects (Beam Property): The number of elements that can be introduced into the optic path is
limited only by the imagination of instrument designers and the budgets of the users. Besides the
standards of gobo and color, several popular instruments incorporate another general-purpose
wheel for effects. These can include prisms to split the beam, color correction filters and diffusion
media or “frost”. The exact features that are loaded in an effects wheel can vary widely.
Fader: A potentiometer that is used to set the level of a board channel.
Fixture: See Moving Light and Dimmer.
Focus: The position of the beam and sharpness or definition of the beam edge.
Frost (Beam Property): The number of elements that can be introduced into the optic path is
limited only by the imagination of instrument designers and the budgets of the users. Besides the
standards of gobo and color, several popular instruments incorporate another general-purpose
wheel for effects. Such effects can include diffusion media or “frost”.
Gobo (Beam Property): A gobo is a cut out pattern that is inserted into the beam so as to project
a pattern on the stage. The gobo has been around about as long as instruments with lenses. As
with color wheels, gobo wheels are positioned in the light beam and can be rotated to the proper
position on cue. Some gobo sizes are standardized which allows custom gobo patterns to be
fabricated and inserted into the gobo wheel for specific effects.
Group: A group is a convenient functional set of instruments. An instrument can be a member of
multiple groups. The user creates groups to facilitate selecting multiple instruments for
programming. A group can consist of instruments of different personalities and manufacturer
types.
Handle: See Fader.