Is BLER the best measure of disc quality?
Measuring error rates is the easiest way to measure disc quality. It works because any serious problem will affect the error rates. Just looking at BLER alone though, is not enough. You also need to look at the severity of the errors. BLER only tells you how many errors were generated, not how serious they were. It is possible to have a disc with low BLER, but have many uncorrectable errors. This disc is not good, even though it has a low BLER. Low error rates indicate that the systems is working well, but only on one player. If you need to have high confidence that the disc will play on all players, you need to look at the pit geometry related signals like I11, I3, Asymmetry, and Push-Pull. If these signals are near optimum, there is a high probability that it will play on all players.
