Specifications

“Lighting Systems Made Easy” Page 27
PYRO (Abbr. PYRO TECHNICS)
Fireworks are often remotely fired by electricity. “Pyro shooting” may require a state-licensed
operator. Can be dangerous – use with extreme care and caution.
QUARTZ HALOGEN
An incandescent lamp that has a quartz envelope and a halogen gas inside it. These lamps
usually exhibit a higher color temperature (whiter light) and a longer operating life, as they are
more efficient than an ordinary lamp. Halogen lamps must not be touched by the human skin
(fingers etc.) or contaminated by grease or oil, as this will cause them to blacken prematurely.
RELAY
An old-fashioned (but economical) mechanical device that allows a small signal to control a
high-powered electrical load. A basic relay consists of a solenoid, which, when energized, acts
as an Electromagnet to pull a number of electrical contacts together. Good when used to
control particular types of electric motors that should not have dimmer packs associated with
them. A source of RFI if not properly suppressed.
RFI
Acronym for Radio Frequency Interference
RIG
A collection of lighting instruments and other equipment usually held together by means of
some kind of metal truss.
SCENE
A number of lighting instruments, or displays, united together in various combinations at
different dimming levels to provide a specific lighting effect
SCR (acr.: SILICON CONTROLLED RECTIFIER)
A solid-state electrical device usually used for dimming (phase control) purposes. Two SCRs
are often used in back-to-back configuration for theatrical lighting control/dimming.
SHORT
Electrical jargon for Short Circuit. A short is often caused by accidental electrical insulation
breakdown. This is when the circuit breaker operates, protecting your valuable equipment
and saving the wiring from burning out.
SIGNAL (See Control Logic Voltage)
SOUND CHASE (a.k.a. AUDIO CHASE)
Same as auto chase, but the switching of the lighting sequence is controlled by the music’s
rhythm or beat (bass, drums, etc.) so the lighting sequence responds to the beat of the music.
SOUND TO LIGHT
Sound is split into a number of frequency bands by filters, and different lighting channels are
switched on according to the amount of bass, middle, mid-hi and high sound frequencies that
are presented at the controller’s sound input.