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52X CD-RW Roundup Vol2

Mar 1,2003 0

13. Writing Quality Tests page 1 - Mitsumi CR-487ETE

 

Review Pages

1. Introduction - AOpen CRW5224
2. Introduction - Mitsumi CR-487ETE
3. Introduction - Teac CD-W552E
4. Introduction - Waitec STORM 52/2
5. Data Reading tests
6. Error Correction Tests page 1
7. Error Correction Tests page 2
8. CloneCD Reading Tests
9. DAE Tests
10. CD-R Writing Tests
11. Writing Quality Tests page 1 - AOpen CRW5224
12. Writing Quality Tests page 2 - AOpen CRW5224
13. Writing Quality Tests page 1 - Mitsumi CR-487ETE
14. Writing Quality Tests page 2 - Mitsumi CR-487ETE
15. Writing Quality Tests page 1 - Teac CD-W552E
16. Writing Quality Tests page 2- Teac CD-W552E
17. Writing Quality Tests page 1 - Waitec STORM 52/2
18. Writing Quality Tests page 2- Waitec STORM 52/2
19. RW Writing Tests
20. Conclusion

 

52X IDE CD-RW Recorder Roundup Vol 2 - Page 13

Writing Quality Tests page 1 - Mitsumi CR-487ETE

We used Taiyo Yuden 80min 40X CD-R media and burned the same AudioCD project (with CD-Text) at all recording speeds. Below you can see the 3T Pit & Land Jitter graphs of Mitsumi CR-487ETE.

- 3T Pit results

Mitsumi CR-487ETE seems to be very picky with the Taiyo Yuden 40X media. The 3T Pit Jitter values exceed the 35nsec limit when the disc was recorded at speeds higher than 16X. Even for the 20X and 24X speeds, the drive introduces jitter after the 35 - 40 min of the disc, which reaches the 48nsec. In the higher speeds, the problems start before the 40 min again, for all the supported speeds from 32X to 52X.

The average 3T Jitter values for all recording speeds are illustrated in the following table.

The lowest average 3T Pit Jitter value is introduced at 16X and 8X. What is interesting is that the drive has almost the same behavior in terms of jitter introduced, for all the speeds above 16X. In addition, the 20X writing speed seems to heavily affect the quality.

- 3T Land results

The 3T Land results correspond to the previous measurements of the 3T Pit Jitter. Again, writing speeds higher than 16X could be turned out to be problematic with the specific media.

The average 3T Land Jitter values are decreased over the 3T Pit values in the same speeds. This time only the 20X recording speed introduces an average higher than 35nsec, but the average values do not clearly define the behavior of the drive for all the disc area.

- Conclusion

Recording Speed
3T Pit Jitter (ns)
3T Land Jitter (ns)
> 35ns
Max value (ns)
8X
37.73
34.83
Yes after 28min
38 Pit 33 Land
16X
37.63
34.83
No
35 Pit 31 Land
20X
38.98
34.98
Yes after 28mins
47 Pit 42 Land
24X
38.55
34.9
Yes after 38mins
48 Pit 41 Land
32X
38.49
34.75
Yes after 38mins
43 Pit 41 Land
40X
40.20
36.93
Yes after 38mins
44 Pit 39 Land
48X
31.80
30.93
Yes after 37mins
46 Pit 40 Land
52X
35.15
31.24
Yes after 38mins
46 Pit 40 Land

We cannot say that the Mitsumi CR-487ETE gave a high overall writing quality with the Taiyo Yuden 40X media. The more acceptable and safe writing speed seems to be the 16X. On the other hand, the 20X is unexpectedly a questionable choice for writing, since it gave back high jitter values from the 28min until the end of the disc. The highest jitter was introduced when writing at 40X to 52X.

 

Review Pages

1. Introduction - AOpen CRW5224
2. Introduction - Mitsumi CR-487ETE
3. Introduction - Teac CD-W552E
4. Introduction - Waitec STORM 52/2
5. Data Reading tests
6. Error Correction Tests page 1
7. Error Correction Tests page 2
8. CloneCD Reading Tests
9. DAE Tests
10. CD-R Writing Tests
11. Writing Quality Tests page 1 - AOpen CRW5224
12. Writing Quality Tests page 2 - AOpen CRW5224
13. Writing Quality Tests page 1 - Mitsumi CR-487ETE
14. Writing Quality Tests page 2 - Mitsumi CR-487ETE
15. Writing Quality Tests page 1 - Teac CD-W552E
16. Writing Quality Tests page 2- Teac CD-W552E
17. Writing Quality Tests page 1 - Waitec STORM 52/2
18. Writing Quality Tests page 2- Waitec STORM 52/2
19. RW Writing Tests
20. Conclusion

 

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