Philips DVDRW885K Double Layer - Page 15

For checking exactly what the DVDRW885K reports with CDSpeed Quality Test, we used three different media, burned on other recorders. Each media was then measured with the well known AudioDev SA300 DVD CATS system at 1X.

The Philips drive supports only PI and Jitter. We will compare our CDSpeed Quality Test results at the following reading speeds against the CATS system measurements :

• 3~8X CAV
• 2~6X CAV
• 4X CLV

Please note that the posted results are only valid for the specific tested DVDRW885K drive. Notice that using other 885K drives can produce totally different results.

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

The PI error rate trend line follows closely the SA300's, however with totally different value levels. Notice that although the speed was set at 8X, the reading was done at 2X. The Jitter levels similarly, also follow closely the SA300 output.

#1st Test Disc - PISum8 Comparison - 6X Reading speed

Here too, while the speed was set at 6X, the reading process was carried out at 2X. The trend is again the same only the values are at a different level.

#1st Test Disc - PISum8 Comparison - 4X Reading speed

Reading was set at 4X, however it was carried out at 1X. Once again we notice the same pattern as previously.

The results for the Philips drive are all similar. The trend in each case, follows the SA300 for both Jitter and PI, but the values are at completely different levels, especially for the PI measurments.