New display doesn't turn on without computer?

Sorry for the noob question, but I ended up getting my brand new 30" display before the mac.
I wanted to verify that the unit was functioning properly and without physical damage so I have it set up and plugged in but the display remains unresponsive.
Do apple displays require a DVI connection before it will power on? I can "hear" electricity going into the power brick going to the display so I'm sure it's getting enough power.
Thanks for your help in advance.

Thanks for the response.
I don't get a flash or any sort of feedback from a plugged in ACD when I touch the power button.
The accompanying Mac Pro isn't due to ship until Monday, so I probably won't get to put it to the real test until the end of next week.
I'm crossing my fingers that the ACD isn't DOA!!
Also, the ACD is plugged into a APC UPS unit, but that wouldn't make a difference would it?

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