I made this .gig the other day to calibrate my mixer levels that receive input from my Giga Studio machines so I thought I'd post it incase any one else might find it useful. It will work in GS2 or GS3.
There are 10 test tones ( see image )
and here's the link to a .zip that contains the .gig
P.S. - If anyone wants the tones as individual .wav files let me know.