Warning for all Autocal users!
I discovered a major bug in the RS400/X5000 firmware's test pattern generator in combination with the Autocal software.
(And I bet, other models are affected too!)
Autocal showed me perfect calibration, gamma and color temperature spot on.
But in fact, after a check with HCFR, it was FAR off!
After decoding the TCP communication between Autocal and the projector, I was able to faster check, when this error accours, and when not.
I finnaly found the reason:
Even though, the Autocal manual states that just "any" video signal must be fed while running Autocal (4K, 1080p or 720p), this error accours when feeding 4K/50 or 4K/60
! (not with 4K/24)
With this finding and after correct Autocal calibration, I was able to reproduce this error at will.
Feeding the projector ("in the background") with a 4K/50 or 4K/60 signal (regardless of the color encoding and bit depth 8/10/12) during Autocal, the internally by the projector generated test patterns are totally wrong in color and brightness.
With 4K/24 or any 1080p signal, everything is okay. Color enconding also has no impact.
After correct calibration, the opposite happened. When feeding 4K/50 or 4K/60, Autocal measured a huge deviation that was not there!
4K 60 Hz: color temp too low, gamma too high
4K 50 Hz: color temp too high, gamma too low
If someone would save these measurements into the projector, he would have totally "decalibrated" it, even though Autocal would show a perfect result after a check.
So make sure to feed a 1080p signal while running Autocal!