Kevin:

The increments are 1hZ from 10 to 40, 5hZ from 45 to 95, 100hZ from 100 to 900, 1kHz from 1000 to 20kHz. It has left, right, in polarity, and out of polarity pink noise also.

The disc was made more as an all-purpose tool than for finding room nodes, but it is good for finding low frequency extension. There are plenty of programs I've found out there for generating audio and video test signals, and some do good sweeps etc.