A
ADB 62.5
Near-obsolete digital lighting control protocol developed by ADB. Uses a 5 pin XLR connector but is NOT compatible with DMX512.
ADDRESS
Each item of equipment controlled by DMX512 has an address, which is the first DMX control channel to which it will respond. For example, in a situation where you have three 6-way dimmer racks, the first should be addressed to 1, the second to 7 and the third to 13.
ADVANCE BAR
Lighting bar positioned just downstage of the proscenium arch. Also known as ANTI PROSCENIUM.
AERO
A type of high intensity Par lamp that derives its name from its use as an aircraft landing lamp. The true Aero is 28V and 250W, although there are many variations. The lamp has a very tight beam.
AIRCRAFT CABLE
A stainless steel stranded cable commonly used for theatrical rigging.
ALPHAPACK
Portable 3 way dimmer pack manufactured by Zero 88.
AMALGAM CFL
Amalgam technology (two or three metals alloyed with mercury) is used in compact fluorescent lamps to control mercury vapor pressure, thus controlling lumen output.
AMBIENT LIGHTING
Lighting that is designed to provide a substantially uniform light level throughout an area, exclusive of any provision for special local requirements.
AMPERAGE
A measure of the amount of current flowing in an electric circuit. Devices such as cables and dimmers are rated in terms of their maximum capacity in amps. Devices such as lamps or motors that consume electrical energy rated in terms of amperage required for proper operation. Any technician working with electrical equipment must understand how to properly connect equipment to not create an overload situation. Standard 12/3 stage cable is rated for 20 amps maximum. Amperage=Wattage/Voltage.
AMPERE
The standard unit for measurement of electrical current passing through a circuit (usually abbreviated to AMP). Written as "I" in equations. Cables, fuses and switches are designated by their current carrying capacity. (Following phrase refers to UK standards). Square pin plugs are rated at 13 Amps maximum and Round pin plugs at either 5 Amps or 15 Amps maximum, depending on the size of the pins. If a cable rated at 5 Amps is used with a load of 15 Amps (for example), the cable will overheat and possibly catch fire.
|
