0-10v

I recently started working at one of the few remaining outposts of 0-10v analog dimmer control. The desk is a grumpy old Leprecon 624. I would like to use ETC Nomad or some other DMX control so the question is: is there a way to convert DMX to 10v analog on a budget?

I have a Pathway 1004 eDIN Demultiplexer (Rev 2) that either seems defective, or is set up incorrrectly. The problem: In test mode (or normal DMX mode) it drives the output from 0-0.5v instead of 0-10v, I can't seem to get it to go to the full 10v. It's being used to control 0-10v electronic...