Ok, I haven't been able to find anything on this. The closest is the 2017 LG oled calibration notes. Where they show the codes and what line up with % of greyscale. For instance 277 is the lowest on my LG B7A which corresponds to 27.1%. Is there anyway with out signal generator to properly calibrate HDR. Both HCFR and ChromaPure only seem to have 5% steps. I'm am using X-Rite i1 Display. I am also using Diversified video solution patterns for HDR 10 and Dolby Vision calibration. Any help would be greatly appreciated!