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CHAPTER 4
DMX Programming Basics and Quick Start
Determining a DMX Start Channel
The DMX Start Channel is the first channel of a device's channel range on a DMX link. There are
512 available channels on each DMX universe divided among all the devices in a particular
universe. A device must have a unique DMX Start Channel number in order to respond
independently to controller commands.
To determine each device's DMX Start Channel, identify the footprint of every device on the
universe. The device's footprint is the number of consecutive DMX channels a device requires
and is determined by the channels in the fixture's protocol. The fixture's DMX channel range
must not overlap any other device's channel range on the link. When two devices on the same
DMX universe have overlapping channel ranges, one or both devices will be disabled or behave
erratically.
Protocol
Mode
Standard
Full control of graphic engine with global
Protocol
and two image layers
RGB Reduced
Washlight control only with red, green,
Protocol
blue, intensity, and strobe controls
Pixel Mapping
Individual RGB control of LEDs plus
Protocol
master intensity, and strobe
Full control of graphic engine with
Extended
Individual RGB control of LEDs available
Protocol
for additional media input
Select the protocol level in the fixture's onboard menu system. The tables on the following
pages list the parameters included in each protocol mode.
24
Description
DMX Channel Range
SHOWPIX StudioPix SHOWPIX StudioPix
70
70
12
12
390
192
451
253
StudioPix™ Pixelation Luminaire User Manual
Last Valid Start
Channel
442
442
501
501
123
321
62
260
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