Theatre Jargon Buster: Difference between revisions
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'''Batten:''' Older style of floodlight unit, suspended above the stage area mainly to light the cyclorama or back cloth.<br><br> | '''Batten:''' Older style of floodlight unit, suspended above the stage area mainly to light the cyclorama or back cloth.<br><br> | ||
'''Blackout:''' Lighting condition in which all controllable lights are turned off.<br><br> | '''Blackout:''' Lighting condition in which all controllable lights are turned off.<br><br> | ||
'''CAD''' Computer-aided design (CAD) is the use of computer technology for the process of design and design-documentation <br><br> | |||
'''Call:''' To call or cue the different technical departments. Usually a member of the stage management team will be responsible for this.<br><br> | '''Call:''' To call or cue the different technical departments. Usually a member of the stage management team will be responsible for this.<br><br> | ||
'''Cap:''' The cap/connection end of the lamp, sometimes pins, sometimes a bayonet fitting.<br><br> | '''Cap:''' The cap/connection end of the lamp, sometimes pins, sometimes a bayonet fitting.<br><br> | ||
'''Carrier:''' Lens carrier, the mechanical holder for one or more lenses, within the lens tube of a profile lantern, providing the ability to move the lens back and forwards.<br><br> | '''Carrier:''' Lens carrier, the mechanical holder for one or more lenses, within the lens tube of a profile lantern, providing the ability to move the lens back and forwards.<br><br> | ||
'''Clipping:''' Where a sound signal is much too loud for a mixer or processor to handle. The top portion of the sound wave is clipped off due to the dynamic range of the signal being more than the equipment allows.<br><br> | '''Clipping:''' Where a sound signal is much too loud for a mixer or processor to handle. The top portion of the sound wave is clipped off due to the dynamic range of the signal being more than the equipment allows.<br><br> | ||
'''Coaxial cable:''' Short version - cable with BNC connectors used for cameras/monitors/radio mic aerials.<br> | |||
Long Version - Coaxial cable, or coax, is an electrical cable with an inner conductor surrounded by a flexible, tubular insulating layer, surrounded by a tubular conducting shield. The term coaxial comes from the inner conductor and the outer shield sharing the same geometric axis. | |||
Coaxial cable is used as a transmission line for radio frequency signals, in applications such as connecting radio transmitters and receivers with their antennas, computer network (Internet) connections, and distributing cable television signals. One advantage of coax over other types of radio transmission line is that in an ideal coaxial cable the electromagnetic field carrying the signal exists only in the space between the inner and outer conductors. This allows coaxial cable runs to be installed next to metal objects such as gutters without the power losses that occur in other types of transmission lines, and provides protection of the signal from external electromagnetic interference. | |||
Coaxial cable differs from other shielded cable used for carrying lower frequency signals such as audio signals, in that the dimensions of the cable are controlled to give a precise, constant conductor spacing, which is needed for it to function efficiently as a radio frequency transmission line | |||
[[Image:Coaxial_cable_cutaway.png|200px]] | |||
'''Colour filter:''' A thin acetate film, which will withstand high temperatures generated by the lantern. Available in a wide range of colours.<br><br> | '''Colour filter:''' A thin acetate film, which will withstand high temperatures generated by the lantern. Available in a wide range of colours.<br><br> | ||
'''Colour magazine:''' Usually associated with Followspots, providing a mechanical means of placing colour into the beam of light.<br><br> | '''Colour magazine:''' Usually associated with Followspots, providing a mechanical means of placing colour into the beam of light.<br><br> | ||
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'''Gain:''' Essential a very broad volume control that is used to raise or lower the level of an audio signal pre-fade.<br><br> | '''Gain:''' Essential a very broad volume control that is used to raise or lower the level of an audio signal pre-fade.<br><br> | ||
'''Gate:''' Opening in the top of the lens tube of a profile lantern, behind the lenses, into which accessories such as Gobos or an Iris Diaphragm may be inserted.<br><br> | '''Gate:''' Opening in the top of the lens tube of a profile lantern, behind the lenses, into which accessories such as Gobos or an Iris Diaphragm may be inserted.<br><br> | ||
'''Gel''' See "Cololur Filter". Common manufacturers are Lee, Rosco and Gam <br><br> | |||
'''Gobo:''' Metal or glass plate with a pattern or image etched into it. Used in a profile lantern or intelligent fixture to project an image.<br><br> | '''Gobo:''' Metal or glass plate with a pattern or image etched into it. Used in a profile lantern or intelligent fixture to project an image.<br><br> | ||
'''Ground row:''' Floodlight unit, mainly used to light the cyclorama or back cloth being floor mounted.<br><br> | '''Ground row:''' Floodlight unit, mainly used to light the cyclorama or back cloth being floor mounted.<br><br> | ||
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'''Tabs:''' Or Tableau Curtains. These may be the main Proscenium Arch curtains, often called House Tabs, or a pair of curtains crossing the stage at any position. Usually blacks.<br><br> | '''Tabs:''' Or Tableau Curtains. These may be the main Proscenium Arch curtains, often called House Tabs, or a pair of curtains crossing the stage at any position. Usually blacks.<br><br> | ||
'''Trunion Arm:''' Also known as the Yoke, it surrounds the lantern and provides the main suspension position.<br><br> | '''Trunion Arm:''' Also known as the Yoke, it surrounds the lantern and provides the main suspension position.<br><br> | ||
'''Vectorworks''' A Computer Aided Design / Drafting Programme (See CAD). Used for Theatre Plans, Lighting Plans, Construction Drawings in both 3D and 2D<br><br> | |||
'''Wash:''' See Coverage.<br><br> | '''Wash:''' See Coverage.<br><br> | ||
'''WLL''' Working Load Limit. An absolute limit to the item's strength (see also SWL) <br><br> | '''WLL''' Working Load Limit. An absolute limit to the item's strength (see also SWL) <br><br> | ||
