garageCube

I am setting up a test of a show I'll be doing on Friday.

I will be running x amounts of LED-fixtures via Madmapper. I have managed to set them up and added DMX-adresses to them, but can not for some reason see the output view in the right window of Madmapper? Why not?

it's normal, the preview on the right shows what's beoing displayed on your VIDEO output and you're sending dmx to lights… no need to see a preview of what you already have in your input preview.

...What he said...

But if you want to see what is being sent to each LED under the fixtures is a very small preview box of what is being sent to each LED.
But you can only view one fixture at a time.