AOpen CRW4850 CD-RW
3. CD Error Correction
Error Correction Tests
In the following tests we examine the reading error correction capabilities of AOpen CRW4850.
- EAC CD-R Test Disc
- Test Results (Max Reading)
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Errors total
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Num: 29808
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Errors (Loudness) dB(A)
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Num: 11505
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Avg:-86.2 dB(A)
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Max: -30.5 dB(A)
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Error Muting Samples
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Num: 53
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Avg:1.9 Samples
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Max: 6 Samples
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Skips Samples
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Num: 0
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Avg: 0 Samples
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Max:0 Samples
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Total Test Result
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81.6 points (of 100.0 maximum)
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Despite the fact that the drive did not completely correct the data from neither the black triangle defect nor the five scratched areas, the amount of total errors is not very high and the average error level is only -86.2dB(A). The drive also didn't skip any samples resulting to an overall score of 81.6 out of 100 (perfect), which is quite good.
- ABEX TCD-721R
- Test Results (Max speed)
The ABEX 721R test disc is very hard to read for almost all the drives. The AOpen CRW4850 showed not a good behaviour since it reported errors before the artificially defected area begin. The error spikes reached -14.2 dB(a) in several areas, but no skipped samples occurred. The performance is average (75.3 points).
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Errors total
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Num: 1028225
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Errors (Loudness) dB(A)
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Num: 62108
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Avg:-74.9 dB(A)
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Max: -14.2 dB(A)
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Error Muting Samples
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Num: 5923
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Avg: 2.0 Samples
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Max: 84 Samples
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Skips Samples
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Num: 0
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Avg: 0 Samples
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Max: 0 Samples
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Total Test Result
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75.3 points (of 100.0 maximum)
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- ABEX TCD-726
- Test Results (Max Speed)
The AOpen drive performed quite well, giving a few errors and got an 83.8 score.
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Errors total
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Num: 7609
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Errors (Loudness) dB(A)
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Num: 2556
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Avg:-89.8 dB(A)
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Max: -47.7 dB(A)
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Error Muting Samples
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Num: 37
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Avg: 1.3 Samples
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Max: 4
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Skips Samples
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Num: 0
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Avg: 0 Samples
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Max: 0 Samples
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Total Test Result
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83.8 points (of 100.0 maximum)
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- Conclusion
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Test Disc
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Reading Speed
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AOpen CRW4850
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Score
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EAC CD-R
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Max
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81.6
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ABEX TCD-721R
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Max
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75.3
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ABEX TCD-726
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Max
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83.8
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Average Score
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80.23
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The AOpen CRW4850 got an overall score of 80.23.
- C2 Information accuracy
- Test Results (MAX Speed)
The C2 accuracy of the AOpen CRW4850 was not good since the drive got an 85.20% score. On the other hand, the quality score was high (88.6 out of 100).
The EAC analyser software reported the following C2 %. The different results in C2% accuracy between the CDSpeed and EAC are due to different calculation method, but both tests indicate that the drive cannot be used safely for DAE when using C2 error information.
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Test Disc
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Reading Speed
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AOpen CRW5224
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| Score | ||
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EAC CD-R
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Max
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66.9
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ABEX TCD-721R
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Max
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67.0
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ABEX TCD-726
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Max
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67.0
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Average Score
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67.0
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