For checking exactly what the BenQ DW1640 reports, we used three different media, burned with other recorders. The three media have been measured using the well known AudioDev SA300 DVD CATS system at 1X.

The drive is capable of reporting PI/PIF errors, so we will compare those measurements at 8X reading speed.

Please note that the posted results are only valid for the specific tested BenQ DW1640 drive. Using other drives, even another BenQ DW1640, can produce totally different results. Be aware!

#3rd Test Disc - PISum8/PIF Comparison - 4X Reading speed

Unfortunately, even with DL media, the error line trend follows a different path with the BenQ scans than that of the CATS scans.