Calibration -30-50% or 50%, or 80%?
My understanding - this is NOT a calibration per se, rather a way of ensuring the meter is set to the refresh rate of the display (when Refresh is selected). I recall there may be a diagnostic log whereby this can be checked?
My results have always been consistent/repeatable, regardless - so long as the patch luminance allows Refresh sync to work. (Our resident experts, please step in if required).
I chose to use EDR Plasma file within HCFR (from Xrite) as I believe using somebody else's meter correction file is counter productive. Meter to meter variation, plus Display variation, plus trusting the Reference Meter and its calibration - as opposed to Xrite Factory calibration with Spectral file for a typical Plasma display. I believe the latter would introduce less variation.
I have done a calibration one way, and repeated with the other method, and errors of ~3 were experienced. I am ok with this result, as the picture looks great.
Ken Kreisel Twin DXD808, Q125 LCR, x4 Q125 TriFX, x4 QFH - for Atmos 7.2.4/Auro 9.2/DTS:X 11.2
Oppo 93 & 203 & Sony VPLHW55ES PJ with Lumagen 2020, 2.35:1 Seymour AT XD screen. Logitech Ultimate One & Hub, SqBox Touch & Philips Hue. Nakamichi AVP1 with Denon X7200WA. With MiniDSP 2x4.