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Home > Hardware Reviews > Optical Storage > 52x CD-RW

Wednesday, February 05, 2003
BTC 5224IM

3. Error Correction Tests

BTC 5224IM IDE CD-RW RECORDER - Page 3

Error Correction Tests

- EAC CD-R Test Disc

- Test Results (Max speed)

Errors total
Num: 115275129
Errors (Loudness) dB (A)
Num: 588893
Avg: -29.6 dB (A)
Max: -7.2 dB (A)
Error Muting Samples
Num: 76981
Avg: 1.1 Samples
Max: 622 Samples
Skips Samples
Num: 363
Avg: 43.2 Samples
Max: 2934 Samples
Total Test Result
52.7 points (of 100.0 maximum)

The drive didn't perform very well and produced a high amount of errors, as you can see from with high spikes in the graph. After the fifth scratch area the drive seems to loose control and produces a constant error level of -7.2dB (A). Also the black defect triangle seems to cause problems resulting to an overall score of 52.7 points out of 100.

- ABEX TCD-721R

- Test Results (Max speed)

Errors total
Num: 1317826
Errors (Loudness) dB (A)
Num: 154860
Avg: -79.2 dB (A)
Max: -31.3 dB (A)
Error Muting Samples
Num: 4757
Avg: 1.0 Samples
Max: 8 Samples
Skips Samples
Num: 1
Avg: 6.0 Samples
Max: 6 Samples
Total Test Result
71.6 points (of 100.0 maximum)

The drive performed better with ABEX 721R test disc. The average level is -79.2dB(A), while the max spike reached -31.35 dB (A). The score is 71.6 points out of 100.

- ABEX TCD-726

- Test Results (Max Speed)

Errors total
Num: 242
Errors (Loudness) dB (A)
Num: 447
Avg: -74.6 dB (A)
Max: -54.1 dB (A)
Error Muting Samples
Num: 0
Avg: 0 Samples
Avg: 0 Samples
Skips Samples
Num: 0
Avg: 0 Samples
Avg: 0 Samples
Total Test Result
52.7 points (of 100.0 maximum)

The ABEX 726 test disc was easier to read for the BTC 5224IM. Only a few errors were reported resulting to a good score of 89.6 points out of 100.

- Conclusion

Test Disc
Reading Speed
BTC 5224IM
Score
EAC CD-R
Max
52.7
ABEX TCD-721R
Max
71.6
ABEX TCD-726
Max
89.6
Average Score
71.3

The BTC 5224IM gave an average performance with a 71.3 score out of 100. However, as we have mentioned the EAC Test results-percentages do not denote any absolute and standard units. We run these tests in order to have an idea of the overall error correction performance of a drive.

- C2 Information accuracy

- Test Results (MAX Speed)

Below is the CDSpeed DAE quality test result of the drive with the ABEX TCD-721R test disc. The amount of compare errors seems to be less than the real errors on the defected disc. In addition, no Sync errors were reported and no C2 errors were missed, resulting to a quality score of 85.6 points out of 100. The retrieved C2 info is also very accurate:

Below are the C2 % accuracy results as the EAC software reports. Considering the results with the ABEX test discs, CDSpeed confirmed the 100% result in the previous test.

Test Disc
Reading Speed
BTC 5224IM
Score
EAC CD-R
Max
50.00
ABEX TCD-721R
Max
99.7
ABEX TCD-726
Max
100
Average Score
83.23




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