Here is a picture of my config. I would go ahead and configure all 16 universes and try it.
I understand the channel size of 512, but I am curious, why wouldn't the channel starts be in increments of 512? 1,513,1025,1537 etc?
b/c the device is seen as a multi dmx network device. then the eD takes all of those universes and uses them as it's pixelnet streams.
it's so the software can communicate to different people's version of a E1.31 device and still work.
it's seen as network 1, channel 1-512, network 2, channel 1-512 once you have a new "network" you start over in channel counts. there's no channel "513" in dmx, so this would fail for the eD with DMX firmware.