20 HDR Calibration adjustment points have been provided for 540nit content, 1,000nit content, and 4,000nit content, shown in the table below. A test pattern generator should be set to output a grey patch at the appropriated Code Value for each adjustment point. If using CalMan, launch Levels Editor, and create a new set of levels using the percentages in the table below, then select this range for the greyscale adjustment in the settings tab of the HDR workflow.
This LG document is really confusing, first of all you can't force any pattern generator to display specific 10-bit values for HDR calibration, since software calculations and generation work in 8-bit. so sending 10bit output is just a 8bit -> 10bit value.
LG Notes have incorrect percentages, do 10-bit to 8 bit values conversion and use these values, CalMAN's Level Editor can accept 8-bit values while LG has posted 10-bit...when you convert them to 8 bit (10bit / 4 = 8 bit) you will get numbers with decimal, you can't enter to CM Level Editor decimal, so you have to round to closest 8-bit value.
I have checked all digital levels compared to Dolby's Golden Reference values and the percentages don't match the digital values (some are correct, only a few). LG's percentages are 0.1% off compared to the posted digital level values they have posted.
540nit values LG has posted are really useless information, no movie has 540 nit mastering display peak metadata, currently movies have 1000/1100/4000nits.
To save some time making the conversions, you can enter these values to CM Level Editor:
21-Point Grayscale (LG 2017 HDR10 540 nits)
16, 67, 83, 99, 106, 113, 116, 119, 123, 126, 129, 133, 136, 139, 143, 146, 149, 152, 156, 159, 235
21-Point Grayscale (LG 2017 HDR10 1000 nits)
16, 75, 90, 104, 111, 119, 123, 126, 129, 132, 136, 139, 142, 145, 148, 151, 155, 158, 161, 164, 235
21-Point Grayscale (LG 2017 HDR10 4000 nits)
16, 80, 96, 111, 119, 126, 129, 133, 136, 139, 143, 146, 150, 153, 157, 160, 164, 167, 170, 176, 235