For checking exactly what the NEC ND-4551A reports, we used three 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 4X reading speed.

Please note that the posted results are only valid for the specific tested NEC ND-4551A drive. Using other drives, even another NEC ND-4551A, can produce totally different results. Be aware!

#2nd Test Disc - PISum8/PIF Comparison - 4X Reading speed

Click on the image for details

If you ignore the absolute values, which differ from software to software, the error trend lines are quite similar for both PI and PIF. The measuring speed of 4X was indeed 4X.