For checking exactly what the BenQ DW1640 reports, we used four different media, burned with other recorders. The three media have been measured with 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 DW1640, can produce totally different results. Be aware!

#1st Test Disc - PISum8/PIF Comparison - 8X Reading speed

As you can easily observe in the graphs above, the error line trend follows the same pattern as the CATS system's scans, but error levels are different.