Originally Posted by viperlogic
Using AVS HD 709, what I did was take the white reading, which at the time was 91 cd/m2 (26.5 ftl) and then for each RGB move their brightness sliders so they were Red 0.21% of white, Green 0.71% of white, and Blue 0.08 of white using 100% sat field colours (afterwards realised that 75% and 100% sat are the same brightness, I think!). Then using 75% saturation fields for each of the RGBCMY move the Hue and Saturation sliders so they landed at their target on the CIE diagram.
Is this process right?
Your process seems unnecessarily complicated.
Once you've displayed the required pattern, all you need to do is to use the Hue and Saturation controls to bring the measured point on the CIE diagram close to the Reference point, and adjust the Brightness for Y. HCFR does not display Reference Y in the CMS grid, but you would adjust Brightness to bring Delta Luminance as close to 0 as you can. As mentioned in my previous post, with the current versions of HCFR there is no need to do any offline calculation yourself.
You have to iterate a couple of times, but the 5040UB CMS is quite well behaved, i.e., the interaction between the controls is minimal.
EDIT: If you're using 75% saturation patterns you should change the HCFR Preference to 75%/75%, which you didn't seem to have done. Also, note that the AV709HD patterns are 75% saturation at 100% stimulus, not 75%/75%. However, as zoyd pointed out, you can still use HCFR directly without having to do any off-line calculations.