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Home > Hardware Reviews > Optical Storage > CD-RW External

Sunday, April 20, 2003
Duet CD-R2-U2 CD-RW/DVD COMBO

3. CD-R Error Correction Tests

Duet CD-R2-U2 slim CD-RW/DVD combo - Page 3

Error Correction Tests

In the following tests we examined the error correction capabilities of the Duet LSC-24081 when reading recorded CD-R's.

- EAC CD-R Test Disc

Errors total Num: 174938590
Errors (Loudness) dB(A) Num: 853104 Avg: -25.1 dB(A) Max: -2.1 dB(A)
Error Muting Samples Num: 922088 Avg: 17.3 Samples Max: 3584 Samples
Skips Samples Num: 356 Avg: 43.9 Samples Max: 2934 Samples
Total Test Result 47.2 points (of 100.0 maximum)

Duet LSC-24081 gave back many errors. Most of them resulted to output muting. This means that the errors were uncorrectable, or even skipped. The performance is low and the average score is only 47.2 points out of 100.

- ABEX TCD-721R

Errors total Num: 1354115
Errors (Loudness) dB(A) Num: 57624 Avg:-70.2 dB(A) Max: -8.4 dB(A)
Error Muting Samples Num: 4430 Avg: 3.0 Samples Max: 1149 Samples
Skips Samples Num: 10 Avg: 16.8 Samples Max: 48 Samples
Total Test Result 65.1 points (of 100.0 maximum)

This time the drive gave less errors than previously, but the score is still lower than average. The Loudness errors reached the -8.4 dB(A) and had an average value of -70.2 dB(A). In addition, 4430 samples were muted.

- ABEX TCD-726

The drive gave an average of 76 points out of 100. This time the "errors loudness" occurred were less, and their average level is low, -39.7dB(A) average. No samples were muted but 6 of them were skipped.

Errors total Num: 43
Errors (Loudness) dB(A) Num: 64 Avg: -39.7 dB(A) Max: -14.3 dB(A)
Error Muting Samples Num: 0 Avg: 0.0 Samples Max: 0 Samples
Skips Samples Num: 6 Avg: 538.0 Samples Max: 588 Samples
Total Test Result 76.0 points (of 100.0 maximum)

- Conclusion

Test Disc Reading Speed Score
EAC CD-R
Max
47.2
ABEX TCD-721R 65.1
ABEX TCD-726 76.0
Average Score 62.76

The Duet LSC-24081 gets an average score of 62.1 out of 100 at the reading error correction tests.

- C2 Information accuracy

The drive missed 46342 C2 marks and gave 411 sync errors. The quality score is 71.9 which is an average score, and the C2 accuracy is 97.33%.




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