Originally Posted by Erik Garci
Some errors might be introduced by your STB, but some errors might already exist in the original signal that the cable/satellite provider is transmitting to your STB.
OK, but if there are errors in the original signal, then it should not be used for calibration.
This is the reason fo my approach. First would be to get the panel calibrated with internal generated patterns, then calibrate each source (DVD, STB, VCR?) to take out errors introduced by the source.
If I calibrate only to a DVD source, I can only say the DVD player chain is calibrated. If I can find cable (FIOS) provided test signals, then I should be able to tweak that source as well.
I am sure every network will have a little difference, but what else can I use for a standard to calidrate to? It is pretty obvious that not all channels on the cable system are video equal.
So if the question comes about: Is it worth calibrating anything other than the DVD input? If the cable provider is not calibrating its signals, why bother?
If not, then this means, the only video source I see that is "calibrated" is a DVD. Then the question needs to be asked, is there a differnce among DVD encoding systems and resulting disk ???
BTW: Network test patterns can be found by going to their web sites and searching for "TEST PATTERN".