Other than the wording you cited, likely a cut and paste job from the GDS-2000A, there is nothing in the manual or the sales brochure that I can find to suggest it does intensity grading. The image is an edge trigger on a swept sine wave with persistence on. It gives the illusion of an intensity display, but that is all it is. The specifications do *not* mention intensity grading of the display. So if that matters to you I suggest you just return it. I'm sure there is fine print in the product announcements stating everything is subject to change.