Philips DVDR1640P DL Recorder - Page 15

PlexTools Scans - Page 4

In order to test the writing quality and readability of the burned media, we used two readers in combination with two software packages:

• The LiteON SOHD-167T with patched firmware being able to read DVD5 up to 16X CAV and DVD9 up to 10X CAV. For the transfer rate tests, we used the latest Nero CDSpeed version.
• The Plextor PX-712A with the latest available firmware. For scanning the disc, we used the latest PlexTools version at 2X CLV reading speed, BURST mode, with middle accuracy.

In general, a "perfect" disc should have a smooth reading curve, very low PIE/POE and zero (0) POF error rates. Most times, even when a disc has very low PIE/POE error rates, the reading curve may not be smooth with dropoffs. Due to the fact that we oversped the reading capabilities of the LiteON SOHD-167T, such drops are expected, especially near the outer area of the disc.

The measurements below should be taken not as the absolute criteria of the burning quality, but as an indication level.

4X DVD+RW Writing Speed

The LiteON 811S failed to recognize the two burned 4X DVD-RW media, whereas the LiteON 167T DVD-ROM didn't, so we don't know if the problem is with the reader or the burned discs...

• Maxell 4X DVD+RW @ 4X

• TraxData 4X DVD+RW @ 4X

• Mitsubishi Chemicals 4X DVD+RW @ 4X

4X DVD-RW Writing Speed

• Optodisc 4X DVD-RW @ 4X

• TraxData 4X DVD-RW @ 4X

- Summary

Here we have to say that the behaviour with DVD-RW media needs improvement. Both tested media weren't playable with Plextools while CDSpeed reported an error in one case. Things are different with DVD+RW media. The writing quality is good but we would like not to see the error in MCC's case. As can been seen in the Plextools graph, the task froze just before the end...