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Atom Operator Manual
Appendix B
LSC Lighting Systems (Aust) Pty. Ltd.
42
Fixtures
The output of the Atom is usually used to control dimmers and the “lights” that you connect to the dimmers are
known as Fixtures. Fixtures are also known as “Lanterns”, “Luminaires”, “Instruments” or “lights”. Other
devices that you can control with the DMX 512 output include “Colour Scrollers” and “Smoke Machines”.
Look
A lighting “LOOK” is the collection of channels at their various levels (intensities) that are contributing to the
output of the Atom at any one time. A “look” may be made up of a collection of channels or a single scene
(see below) or a combination of several scenes. It may even be a single channel.
Channel
A Channel is the basic element of a Lighting Control System. The number of dimmers and fixtures connected
to this channel is variable depending on your installation and/or application. The most basic application will
have just one dimmer and fixture (light) connected to a channel, so that as you vary the level of that channel,
you vary the level of that fixture.
Preset
When many channels are assembled in a group of adjacent faders they form a “Preset” and each channel in
the preset has an individual fader to control its level. It is common to have two presets available to the
operator. The first lighting “look” is created on one preset by fading up the required channels. The next lighting
“look” is prepared (or “preset”) on the other preset without appearing on stage (as its preset master is kept
faded down). At the appropriate time, the first preset is faded down whilst the second preset is faded up. The
next lighting “look” is now prepared on the first preset. These alternate crossfades from preset to preset form
the standard operation of a manual preset lighting board.
Preset Master
A Preset master controls the overall level of all the channels in a preset (above). The Atom provides a Red
and
a
Yellow
Preset
Master to control the overall level of the red and yellow presets respectively.
Grab Master
A grab master is similar to a preset master in that it can control the level of a number of channels. It differs
from a preset master in that it does not have dedicated channel faders under its control. It “grabs” or stores
the channels that it controls from other areas of the Atom. Typically, it would be used to grab the current
output
of the Atom.
When a grab is performed, an exact copy of the channels that are on (including their levels) is loaded onto the
grab master. This is often referred to as taking a “snapshot”.
Scene
A Scene is a
recorded
group of channels (at their respective levels) plus “IN” and “OUT” fade times. Once you
have recorded some scenes, you may of course fade up several scenes at once and record the combination
as a new scene.
Chase
A chase is a list of steps that are replayed in order, stepping continuously from one step to the next and
automatically repeating the list when it has reached the end.
Submaster
A Submaster provides a means of controlling the overall level of a scene or a chase.
Highest Takes Precedence
If a level for a particular channel is emanating from several places at the same time, then the highest of all
those levels will be the level at the output.
Dipless Crossfade
When a crossfade is performed, the output level of any channel that is on in
both
the OUT fading master and
the IN fading master will fade directly from its outgoing level to its incoming level and will
not
dip
below a level
equal to the current sum of the two masters.