Error Correction Tests

In the following tests we check the drive's behavior when it comes to reading scratched / defected discs. The test discs we use are the ABEX Test Discs series from ALMEDIO.

- ABEX TCD-721R

Errors total	Num: 44090040
Errors (Loudness) dB(A)	Num: 194223	Avg: -31.0 dB(A)	Max: -6.9dB(A)
Error Muting Samples	Num: 73738	Avg: 1.0 Samples	Max: 596 Samples
Skips Samples	Num:5	Avg:1376.0 Samples	Max: 2342 Samples
Total Test Result	55.5 points (of 100.0 maximum)

The Optorite drive seems to have problems to accurately read the ABEX-721R disc. Many errors were reported and their average level is -31dB. In addition, 73738 samples were muted and some other were skipped. The score in this test is only 55.5 points.

- ABEX TCD-726

Errors total	Num: 19
Errors (Loudness) dB(A)	Num:6	Avg: -33.9 dB(A)	Max:-18.9dB(A)
Error Muting Samples	Num: 0	Avg: 0.0 Samples	Max: 0 Samples
Skips Samples	Num: 0	Avg: 0.0 Samples	Max: 0 Samples
Total Test Result	94.7 points (of 100.0 maximum)

The drive gave an average of 94.7points out of 100. This time the errors loudness occurred were a few, and their average level is low, -33-9dB(A). No errors were muted and no samples were skipped.

- Conclusion

Test Disc	Reading Speed	Score
ABEX TCD-721R	Max	55.5
ABEX TCD-726		94.7
Average Score		75.1

The Optorite DD0203 gets a good score of 75.1 out of 100 at the error correction tests. The drive gave back many read errors with the scratched disc, but behaved very well while reading the defected disc.

- CDSpeed Quality Test

Optorite DD0203 does not retrieve C2 error information accurately, at least at the maximum reading speed. For this reason, the Nero CDSpeed quality test could not give reliable information about the error correction behavior of the drive, resulting to the score given above.