Finally had time to do a full DV calibration on my B7. The calibration in relative mode was without problems - BUT that takes a lot of time as you HAVE to use pattern insertion, without that you never will be able to get it done right. I have ASBL deactivated also (service menue), I used pattern insertion every 5 seconds, duration 15 seconds, 0% window (completely black to let the display cool down) - the results were always repeatable. The other thing is you cannot calibrate in real time as the display heats up and the OSD impairs the result to some degree.
First I tweaked 100IRE with the 2pt high control, then did the 20pt in realtime (changing values while the sensor is measuring) to get nearly to my target. Then take a complete series read and tweak the different IREs, but not in realtime. Adjust the different IREs (important, let the display cool down while changing the values - i switched to another HDMI port and played dark content) and then again take a complete series read. Repeat till you are satisfied with the results... Yes, that takes a lot of time but only with that method you can do it without introducing problems. It took me 2 hours to get everything done
After creating the dolby file and playing it to my TV the resulted image was purple
OK, so I asked some calibration friends and the one who gave me the right answer was TED (the guy with the best calibration disc out there, in my opinion the calibration god). The dolby file is a simple text-file, I had to replace the commas with dots and tadaaaaaa, the picture was normal again. Thanks TED again for your help!
When you play the file for the first time into the TV he asks you to replace the DV-file or to cancel. After tweaking the DV-file and then sticking the USB drive into the TV again, I had 3 options: Replace, reset to factory or cancel. So you dont have to be afraid to brick your DV-mode, you can reset the DV-file at any time. This question was unanswered here...
Had not enough time to evaluate the final outcome with real world content, godless on netflix looked spectacular but I need more time for analyzing.
Thanks OP for the guide, worked great for me