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Home > Hardware Reviews > Optical Storage > 40x CD-RW

Monday, February 10, 2003
PleXWriter PX-W4012TS

3. Error Correction Tests

PleXWriter PX-W4012TS SCSI CD-RW - Page 3

Error Correction Tests

In the following tests we examine the reading error correction capabilities of the drive.

- EAC CD-R Test Disc

- Test Results (Max Reading)

Errors total
Num: 115248617
Errors (Loudness) dB(A)
Num: 582339
Avg:-29.0 dB(A)
Max: -7.2 dB(A)
Error Muting Samples
Num: 76754
Avg: 1.0 Samples
Max: 633 Samples
Skips Samples
Num: 355
Avg: 44 Samples
Max: 2938 Samples
Total Test Result
52.8 points (of 100.0 maximum)

The drive didn't perform very well and produced a high amount of errors with high spikes. 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 52.8 points out of 100.

- ABEX TCD-721R

- Test Results (Max speed)

Errors total
Num: 1520067
Errors (Loudness) dB(A)
Num: 69147
Avg: -72.7 dB(A)
Max: -17.5 dB(A)
Error Muting Samples
Num: 7315
Avg: 1.1 Samples
Max: 85 Samples
Skips Samples
Num: 0
Avg: 0 Samples
Max: 0 Samples
Total Test Result
75.6 points (of 100.0 maximum)

The drive performed better with the ABEX 721R test disc. The average level is -72.7 dB(A), while the max spike reached -17.5 dB (A). The score is 75.6 points out of 100.

- ABEX TCD-726

- Test Results (Max Speed)

Errors total
Num: 15
Errors (Loudness) dB(A)
Num: 14
Avg: -80.2 dB(A)
Max: -72.7 dB(A)
Error Muting Samples
Num: 0
Avg: 0 Samples
Max: 0 Samples
Skips Samples
Num: 0
Avg: 0 Samples
Max: 0 Samples
Total Test Result
93.0 points (of 100.0 maximum)

The ABEX 726 test disc was a "piece of cake" for the PX-W4012TS. Only one spike error was noticed at 27mins producing a 93.0 points score out of 100.

- Conclusion

Test Disc
Reading Speed
ASUS CRW5224
Score
EAC CD-R
Max
52.8
ABEX TCD-721R
Max
75.6
ABEX TCD-726
Max
93.0
Average Score
73.8

The PleXWriter PX-W4012TS gave an average performance with a 73.8 score out of 100.

- C2 Information accuracy

- Test Results (MAX Speed)

Below is the CDSpeed DAE quality test result of the drive. Despite the 104 sync errors, the drive got an 81.1 score. The C2 % accuracy seems to be low with an 83.23% score:

Below are the C2 % accuracy results as the EAC software reports. CDSpeed also confirmed the 82.17% result in the previous test.

Test Disc
Reading Speed
ASUS CRW5224
Score
EAC CD-R
Max
50.00
ABEX TCD-721R
Max
96.5
ABEX TCD-726
Max
100
Average Score
82.17

Last, we post the C2 error graphs as they are available by EAC analyser software.




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