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.
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| DMX Channel Range | Last Valid Start | |||
Protocol | Description | Channel | ||||
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Mode |
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| SHOWPIX | StudioPix | SHOWPIX | StudioPix | ||
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Standard | Full control of graphic engine with global | 70 | 70 | 442 | 442 | |
Protocol | and two image layers | |||||
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RGB Reduced | Washlight control only with red, green, | 12 | 12 | 501 | 501 | |
Protocol | blue, intensity, and strobe controls | |||||
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Pixel Mapping | Individual RGB control of LEDs plus | 390 | 192 | 123 | 321 | |
Protocol | master intensity, and strobe | |||||
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Extended | Full control of graphic engine with |
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Individual RGB control of LEDs available | 451 | 253 | 62 | 260 | ||
Protocol | ||||||
for additional media input |
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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 | StudioPix™ Pixelation Luminaire User Manual |