DEQ 2496 Help

I just got a used Behringer UltraCurve 2496 and was trying to use the RTA. I can get it to play music using the Toslink Input and Output but cannot get it to emit any Pink Noise to do the Analysis. Any advice would be appreciated.
There is a control to turn up the volume for the pink noise. Read manual carefully. The ultracurve has a lot of settings and the contols are far from intuitive.
I had the same problem, but can't quite remember what I did to fix it. I think you have to go into the menu that is something like "connections" - the one that looks like a little block diagram/schematic - and connect the pink noise generator to the outputs.