it's very possible his meter is too slow and he's trying to measure a modulated output.
Originally Posted by
aberry
If you're only seeing 2V at the driver then something is wrong, but it's hard to say what without more info. The cable should definitely not cause any appreciable drop at any reasonable length. It's possible that the DAC actually has symmetrical differential outputs, and is putting out +2.5V/-2.5V on the modulation +/- lines, but I would be very surprised if that were the case.
Testing the DAC and cable independently would be a good place to start.
Can you give us a look at how your projector is wired up?
suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.