Error Correction Tests

In the following tests we examine the reading error correction capabilities of AOpen EHW-4048U.

- EAC CD-R Test Disc

- Test Results (Max Reading)

Despite the fact that the drive did not corrected 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 -83.6dB(A). The drive also didn't skip any samples resulting to an overall score of 81.2 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 EHW-4048U showed a bad behavior since it started reporting errors before the artificially defected area begin. The error spikes reached -1.6 dB(a) in several areas and many skipped samples occurred. The performance is low (51.2 points).

- ABEX TCD-726

- Test Results (Max Speed)

The AOpen drive didn't perform well, giving many errors especially by the end of the process and got a 57.4 score.

- Conclusion

The AOpen EHW-4048U got a less than medium overall score of 63.26.

- C2 Information accuracy

- Test Results (MAX Speed)

The C2 accuracy of the AOpen EHW-4048U is very low according to the CDSpeed. The drive got an 38.31% score. The quality is also very low due to high number of sync errors. The EAC analyzer 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.