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Source Four LED User Manual v1.8.0
Daylight and Tungsten
Direct Control
The first DMX channel always controls Intensity from 0 to 100%.
Fan Control
The Fan setting allows four options: DMX, Slow, Fast, and Automatic.
With Fan set to DMX, an additional channel of DMX control is added to the fixture profile. This channel
immediately follows the channel for Strobe. Control is as follows:
• DMX 0: Fan turns on and off automatically, as needed for cooling. Fan remains off when not
required by the fixture.
• DMX 1 to 254: Fan is forced on at a continuously variable speed from low to high. Occasionally,
the fan speed may be increased automatically by the fixture for additional cooling power when
required.
• DMX 255: Fan is forced on at its highest, loudest speed for maximum consistency of noise
produced by the fixture.
When Fan is set to Slow, Fast, or Automatic, there is not a channel designated for control within the
DMX profile. At Slow and Fast settings, the fan operates whenever the fixture is powered on,
independent of other fixture settings or control.
• Slow: Fan runs continuously at a low-noise speed. When deemed necessary by the fixture, the fan
speed may be increased automatically for additional cooling power.
• Fast: Fan runs continuously at its highest and loudest speed, and never increases automatically.
• Automatic: Fan operation is intermittent and based on the fixture’s internally calculated cooling
requirements.
Data Channel
Control
Value
Function
1
Fixture address
Intensity
0 to 255
Intensity 0 to 100%
2
Fixture a 1
Strobe
Variable strobe control
3
Fixture a 2
Fan control
Force fan on at various
speeds