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M
MASTER ELECTRICIAN
In entertainment lighting, the Master Electrician's primary responsibility
is the technical execution of the lighting design as specified by the
lighting designer or lighting director. Typical tasks include the
organization of crews and schedules as well as the technical planning,
rental, installation, and maintenance of equipment. A Master Electrician is
rarely licensed as a professional general electrician.
MIDI (MUSICAL INSTRUMENT DIGITAL INTERFACE)
A serial control protocol designed to allow musical devices such as
keyboards and synthesizers to share musical information. Many lighting
manufacturers have provided a means by which lighting devices can respond to
specific MIDI signals. MIDI-show-control, an extension to MIDI, defines a
standard way in which simple cue execution commands specific to show
controllers can exchange information through MIDI systems.
MIDI-SHOW CONTROL (MSC)
A subset of MIDI sytem exclusive commands which contai instructions relative
to lighting, scenery, and other show controllers. The most common MSC
commands are go, stop, and fire.
MIRROR BALL
A common lighting effect created by shining a narrow beam light source onto
a rotating ball with a faceted mirror surface.
MOVING LIGHT
A common term for automated fixture.
MOVING MIRROR AUTOMATED FIXTURE
A classification of automated fixtures which achieves beam motion by
reflecting the beam off of a remotely controlled motorized mirror. The
Cyberlight (TM) by High End Systems, and the Roboscan (TM) by Martin, are
examples of moving mirror automated fixtures.
MOVING YOKE AUTOMATED FIXTURE
A classification of automated fixtures which achieves beam motion by remote
motor controlled movement of the yoke and body of the fixture. The Vari-Lite
series of automated fixtures (TM) Vari-Lite, are an example of moving yoke
automated fixtures.
MULTICABLE (MULT, MULTI)
A cable designed to supply power from dimmers to multiple separate lighting
instruments down a single multi-conductor cable. Standard multi-cables can
carry the equivalent of 6 or 12 standard stage cables corresponding to the
same number of circuits. A break-out is used at either end to break the
multi cable apart into individual circuits. Multicables have the advantage
of being much smaller than bundles of multiple stage cables.
MAGNETIC TRANSFORMER
employed for both single and multiple lamp operation, uses the principle of
inductance (the ability of a device to store energy in the form of a
magnetic field) to produce the voltage change.
MAINTAINED ILLUMINANCE
initial illumination level from luminairs adjusted for depreciation of lamp
lumens by aging, effects of dirt accumulation on luminair surfaces, and
other factors.
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