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13
Dimming and Controlling Multicolor LEDs
The illustration on the previous page shows a 2-color LED device. There are
3 wires: one for the 12V common positive (
+
), and two wires for the unique
negative leads. The common positive color is shown as red, but may vary.
Dimming happens on the negative (–) terminals. All of the (
+
)
terminals are
connected together inside the LumenDimM2micro. The common positive
should be connected to the (
+
) under DimA. The other wires connect to the
negative (–) terminals under DimA and DimB.
Cross-Fade Mode for Warm/Cool White Control
One popular 2-color device is a warm-white/cool-white LED panel. Cross-fading
between warm and cool produces a range of color temperatures, allowing you
to find the exact rendering of white that you need. This is particularly useful for
motion-picture applications.
The LumenDimM2micro includes a color Cross-Fade mode (sometimes called
X-Fade). In Cross-Fade mode, one DMX channel controls color temperature, and
another DMX channel controls total brightness. This ensures that the selected
color temperature does not change when the level is adjusted.
Cross-Fade and many other features can be explored further at
http://rc4.info/
or by asking us for help at
.
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Non-Dim 100%
(80% or higher)
Use for relays, solenoids, air valves, etc.
Linear 70%
(60 - 79%)
For incandescent, halogen, tungsten lamps.
ISL Fast
50%
(40 - 59%)
For LEDs when fast blinks and flashes are required.
RC4 Digital Persistence™ is disabled.
ISL Slow
30%
(20 - 39%)
Best for typical LED applications, with RC4 Digital Persistence™
For super smooth 19-bit dimming. (default setting)
Choosing Other Dimmer Curves or Profiles
The LumenDimM2micro default is the ISL dimmer curve, which is best for LEDs.
This is also the curve that is selected with RC4 OneTouch™ when the DMX level
is at 30%.
There are dimmer curves for different kinds of lamps, motors, and more.
Detailed information can be found online by searching dimmer curves at
http://rc4.info/
.
The most common curves are selected using these DMX channel levels and
RC4 OneTouch™ with the Set buttons as outlined on page 9:
