dBu

[John Radomski]

Dave,

dBu is dB relative to .775 volts. dBu decibels referred to the voltage
equivalent of 0 dBm into a 600 ohm load. 0 dBu = 0.775V = 
­2.2 dBV.

I hope this helps

John Radomski
Compliance Engineer
Inter-Tel Integrated Systems