Product manual

Basic Concepts & Glossary
Q Light Controller Plus (QLC+ for short) is meant to control lighting equipment used in various
performances, like live concerts and theatres etc. The main purpose is that QLC+ could
outperform commercial lighting desks with an intuitive and flexible user interface, without the
need for a 500+ page manual.
This page has been arranged in alphabetical order to ease searching for a specific topic.
Audio
An audio function is an object representing an audio file stored in a disk.
Audio files can be placed in a show at the desired time, using the Show Manager panel.
Blackout
Blackout is used to set all channels in all universes to zero and keep them that way, regardless of
what functions are currently being run or what values have been set to them manually. When
blackout is turned off, current values of all channels are set to each universe.
Capabilities
Some channels in intelligent fixtures provide many kinds of functions, or capabilities like
switching the lamp on when the channel value is [240-255], setting a red color on a color wheel
when the value is exactly [15], or simply controlling the fixture's dimmer intensity with values [0-
255]. Each of these individual function is called a capability and each of them has these three
properties:
Minimum value: The minimum channel value that provides a capability.
Maximum value: The maximum channel value that provides a capability.
Name: The friendly name of a capability.
Channel Groups
Channel groups can be added and defined in the Fixture Manager panel by using the Channel
groups editor.
Channel groups can have a user defined name and can group any user defined channels
selected from an existing Fixtures list.
Chaser
A chaser function encapsulates multiple scenes that are run in sequence, one after the other,
when the chaser function is started. The next function is run only after the previous has finished.
Any number of functions can be inserted to a chaser.
Chaser functions' direction can be reversed. The function can also be set to do an infinite loop,
an infinite ping-pong-loop (direction is reversed after each pass) or it can run thru just once, in a
single-shot mode, after which it terminates by itself. If the function is set to do an infinite loop, it
must be stopped manually.
As of version 3.3.0, each chaser has their own speed settings:
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