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DMX Oscilloscope pictures

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There is always discussion about the quality of DMX-USB-interfaces, so I think it is time to face this discussion with the reality. Whats more real, than oscilloscope pictures of the signal. I have done pictures of all the interfaces and consoles I could find.

We should have a complete list - so please, if your interface is not here, try to make a photo and add it.

Theory


Erwin Rol is explaining the DMX timing very good on his website - the following picture is from this this site - the important part of the signal is around the break - so I tried to catch this part with the oscilloscope

Dmx-large.png





1. SPACE for BREAK
2. MARK after BREAK (MAB)
10. MARK before BREAK (MBB)



© of the diagramm by Erwin Rol

Ethernet to DMX interfaces


ETC E-Gate Plus

256ch-etc-egate+.jpeg

Website

Price: ???
Lenght of cable: 20 m







Signal strenght: 3,7 V

ETC-Net3-ACN-Gateway

ETC-Net3-ACN-Gateway.jpeg

Website

Price: ???
Lenght of cable: 20 m







Signal strenght: 2,7 V

USB to DMX interfaces


DMXking ultraDMX Micro

256ch-dmxking-micro.jpeg

Website

Price: 60 $ sometimes cheaper (39 $)
Length of cable: no cable







Signal strenght: 3,2 V

Enttec USB open

256ch-enttec-open.jpeg

Website

Price: 60 $
Length of cable: no cable







Signal strenght: 4,2 V

Enttec USB Pro - firmware 1.44

256ch-enttec-pro.jpeg

Website

Price: 120 $
Length of cable: no cable







Signal strenght: 3,7 V

Consoles


siemens S28

256ch-siemens-s28.jpeg

one of the first DMX-consoles



Length of cable: no cable







Signal strenght: 3,2 V

Transtechnik

256ch-transtechnik-nt-console.jpeg

TRanstechnik



Length of cable: 5 m







Signal strenght: 3,2 V