52x CD-RW Roundup Vol3 (Optorite CW5201 & Plextor Premium)

Review Pages

1. Introduction - Plextor Premium
2. Introduction - Optorite CW5201
3. Data CD Reading Tests
4. Error Correction Tests - Plextor Premium
5. Error Correction Tests - Optorite CW5201
6. Protected Data Disc Tests
7. DAE Tests
8. CDR Writing Tests
9. PlexTools Professional Tests
10. Writing Quality Tests 1 - Plextor Premium
11. Writing Quality Tests 2 - Plextor Premium
12. Writing Quality Tests 1 - Optorite CW5201
13. Writing Quality Tests 2 - Plextor Premium
14. RW Writing Tests
15. Conclusion

52x CDRW Roundup - Page 4

CD Error Correction Tests

Plextor Premium

In the following tests we examined the error correction capabilities of the Plextor Premium, when reading an artificially damaged CD-R. For the test we used the Almedio ABEX pressed discs.

- ABEX TCD-721R

Errors total	Num: 1890469
Errors (Loudness) dB	Num: 67356	Avg: -71.4 dB(A)	Max: -15.3 dB(A)
Error Muting Samples	Num: 17607	Avg: 2.7 Samples	Max: 513 Samples
Skips Samples	Num: 6	Avg: 6.0 Samples	Max: 6 Samples
C2 accuracy	99.7 %
Total Test Result	66.7 points (of 100.0 maximum)

As we have mentioned before, it is normal to get read errors in this test, since the ABEX disc is artificially scratched. The average level of the reported errors is -71.4dB(A), which is an acceptable rate. On the other hand some samples were muted and a few were skipped, resulting to an average score of 66.7 points out of 100. The reported C2% accuracy is also high.

- ABEX TCD-726

The total amount of errors is smaller in the case of the TCD-726 disc. The scratches on the disc is not as heavy as in the TCD-721, and the rest defects and fingerprints seem not to produce many errors while reading. The average level of the errors was -81.2dB(A), which is a very good result. The score for this test is high. (81.4 points).

Errors total	Num: 12412
Errors (Loudness) dB	Num: 3622	Avg: -81.2 dB(A)	Max: -40.5 dB(A)
Error Muting Samples	Num: 299	Avg: 1.3 Samples	Max: 4 Samples
Skips Samples	Num: 0	Avg: 0.0 Samples	Max: 0 Samples
C2 accuracy	100.0 %
Total Test Result	81.4 points (of 100.0 maximum)

- Conclusion

Test Disc	Reading Speed	Score
ABEX TCD-721R	max	66.7
ABEX TCD-726	max	81.4
Average Score		74.05

Test Disc	C2 Accuracy
ABEX TCD-721R	99.7%
ABEX TCD-726	100%

The Plextor Premium gets a good score of 74.05 points out of 100 at our CD error correction tests. The drive can be a reliable reader with heavily defected discs, as we saw in the ABEX-726 test, and can correct adequately severe errors coming from wide scratches.

In addition, according to EAC software, the retrieved C2 information is almost 100% accurate.