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Doug Fleenor Designs 121D
DMX Spliter, 2 Universe, 1 IN/ 1 OUT

OUR PART #:  121D

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.
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Selected Model Price: $492.48
List Price: $608.00
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Doug Fleenor Designs 121D
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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. 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.

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.

Doug Fleenor Designs 121D Features:

  • Input is electrically isolated from output- Console is protected from failed dimmers, lightning damage, and anyother cause of high voltage on the control cable.
  • Outputs are isolated from each other - Colorchangers, moving lights, other dimmers are protected from each other.
  • Outputs are separately buffered - Reflections,short circuits, etc. on one output cannot affect another output.
  • No user adjustments - Easy "fool proof"installation.
  • DMX pinouts are printed on the splitter- Assists in proper control wiring.
  • Powder coated 1/10" aluminum chassis - Ruggedand attractive for years of service.
  • Gold plated Neutrik 5 pin connectors - Assuresreliable connections.
  • All integrated circuits are socketed - Easesfield service.
  • Uses 2500 Volt optical couplers - Easily isolates linevoltage failures. Usually with stands electrical storm damage.
  • Forty times faster than DMX data rate - Reliable,high speed data through put. Units can be cascaded.
  • "Air gap" circuit board under isolator- Prevents arcing across circuit board.
  • 60 mA drive current - Reliably drives longcontrol cables.
  • Power and input signal indicators - Simplifiessystem trouble shooting.
  • 5 year warranty - Peace of mind.

Doug Fleenor Designs 121D Specifications:

  • Outputs: 2
  • Input circuit: EIA-485 receiver with 120 ohmtermination resistor between +Data and -Data (Units with feed throughconnectors do not have internal termination)
  • Input signal: 0.2 volts minimum, 12 voltsmaximum
  • Output circuit: EIA-485 driver
  • Connectors: Gold plated 5 pin Neutrik D-1Series (3 pin connectors, terminal blocks, or RJ45 connectors optional)
  • Feed through: A non-isolated feed throughconnector is standard on the eleven output model and is optional on the one,three, and five output models.
  • Isolation: 2500 volt optical coupler, 1500volt split bobbin transformer
  • Power input: 100 - 120 volts, 50/60 hertz, 12watts (208 - 240 volt optional)
  • Color:   
    • Top, bottom and sides: Silver hammer tone 
    • Front and back: Black
  • Dimensions (DxHxW): 6.5" x1.7" x 8.25"
  • Weight: 3.3 lbs.
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Doug Fleenor Design's RK6-1 rack mount kit adapts products that use the 6.5" Stepladder Series Chassis to a standard 19" rack.  These products include the model 121,123, DMX1REL20A, DMX2REL5A, DMX2MPX, etc.Parts (shown above in red - ...
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