DMX4ALL GmbH Online Store
Die DMX4ALL GmbH ist ein Ingenieurbüro mit dem Produktschwerpunkt der Licht- und Steuerungstechnik basierend auf dem ARTNET,DMX512 und RDM Protokoll.
Digitale Stripes
Calculates current draw, power supply, DMX channels, universes, power injection and cable cross section for digital and analogue LED stripes and names the matching DMX4ALL device.
Further assumptions
Result
- Protocol set as the output protocol on the controller
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- Total pixels
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- Total LEDs
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- Total length
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- DMX channels
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- Universes
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- Outputs required
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- Matching device
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- Suitable devices all devices that can handle this installation
- Current at full load
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- Power at full load
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- Current in operation
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- Power in operation
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- Recommended power supply including headroom
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- Max. refresh rate theoretical maximum of the protocol, excluding controller processing time
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- Time per frame
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- Length per injection point to keep the voltage drop within limits
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- Injection points per run
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- Supply cable cross section copper, at the given length and permissible drop
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Layout schematic, drawn from the result
Basis of the calculation
The calculation uses data sheet values at full brightness and white light. Real values differ depending on series resistors, tolerances and ambient temperature. The results are a planning aid and do not replace a design by a qualified electrician.
- Universes are counted per output. One universe holds 512 channels, which is 170 pixels with RGB and 128 with RGBW; no pixel crosses a universe boundary.
- A DMX device gets one universe per output. Art-Net devices carry several universes over the network, as stored with the selected device.
- With addressable pixels, minus is also the reference for the data signal. The ground therefore runs along with the stripe and the data line. Star distribution from the power supply and closed rings make pixels flicker.
- A DMX512 universe is transmitted at a maximum of 44 frames per second. For digital stripes the refresh rate follows from the chip data rate and the length of the chain.
- The injection interval applies to full brightness in white, the worst case, and depends on the assumed conductor resistance of the stripe.
- The cable cross section applies to copper at 56 m/(ohm*mm²), calculated over both conductors at full load.
- The power supply is chosen from the power at full load plus headroom, rounded up to the next common size.