NEW Doug Fleenor DMX Isolated Opto Splitter

The NEW Doug Fleenor DMX Isolated Opto Splitter is a DMX512 distribution splitter and signal amplifier designed to let you run DMX receivers (dimmers, color changers, moving lights, etc.) in a clean, reliable star configuration instead of a daisy chain. Each output is electrically isolated from the input, and from every other output, by 2500 volt optical couplers. Each output has its own line driver and associated power supply.

Why Use a DMX Splitter (Instead of a “Wye” Cable)

The DMX splitter allows connection of DMX receivers (dimmers, color changers, moving lights, etc.) in a star configuration as opposed to a daisy chain configuration. In a star configuration, each control cable is run to a central point, in this case the splitter. In a daisy chain configuration all the devices are connected on one control cable, the output of one feeding the input of the next. It is not good practice to simply split a DMX control cable using a "wye" cable as this can cause signal corruption due to reflections.

Isolation for Cleaner, More Robust DMX Runs

With optical isolation on every output and independent line drivers, this splitter is built to help protect your control system from electrical differences between rig zones and to reduce the chance that a problem on one branch affects the rest of the network. A non-isolated feed through connector is standard for passing the input signal onward when needed.

Typical Applications

Typical uses of the splitter include splitting the control signal between stage right and stage left dimmers, running an isolated split to a string of color changers, splitting and isolating a feed to a wall outlet for temporary or rented dimmers, isolating a stack of dimmer packs from each other, etc.

Technical Details

• Input circuit: EIA-485 receiver with 120 ohm termination resistor between +Data and -Data (Units with feed through connectors do not have internal termination)
• Input signal: 0.2 volts minimum, 12 volts maximum
• Output circuit: EIA-485 driver
• Isolation: 2500 volt optical coupler, 1500 volt split bobbin transformer
• Connectors: Gold plated 5 pin Neutrik D-1 Series, Terminal Blocks, or RJ-45
• Power input: 100 - 120 volts, 50/60 hertz, 12 watt
• Color: Top, bottom and sides: Silver hammer tone, Front and back: Black
• Size: 6.5" deep 1.7" high 16" wide (19" Rack Kits Available)

Single output units, for amplification and isolation without splitting, are also standard products.