Identifying Data General (or DG-related) console/terminal/whatsit?

[Josh Dersch]

Hi all --

A friend of mine is investigating picking up some DG hardware, and this 
item:

http://yahozna.dyndns.org/scratch/dg/dg%20console.jpg

Is included along with the rest of it.  I *know* I've seen something 
like this somewhere but I can't find anything now that I need it :).  
Can anyone identify this?

Thanks,
- Josh