40x CD-RW Roundup Vol. 2

Review Pages

1. CyberDrive CW078D
2. LG GCE-8400B
3. Mitsumi CR-485C
4. WAITEC Storm40
5. TDK CyClone 401248B
6. Samsung SW-240B
7. Data Reading Tests
8. CloneCD Reading Tests
9. DAE Tests
10. CDR Tests - Page 1
11. CDR Tests - Page 2
12. CDR Tests - Page 3
13. Writing Quality of CyberDrive
14. Writing Quality of WAITEC
15. Writing Quality of MITSUMI
16. Writing Quality of LG
17. Writing Quality of Samsung
18. Writing Quality of TDK
19. HS-RW/Packet/Mt. Rainier Tests
20. Conclusion
21. Positive And Negative Of Each Drive

40x Roundup Vol. 2 - Page 15

Writing Quality Tests for Mitsumi CR-485C

We used many media, including 40x certified, and burned them at various recording speeds with Mitsumi CR-485C TE. The produced CDs, were measured from DigitalDrives and results are illustrated in the following tables. The most interesting results comes from the maximum recording speed of 40x.

- 40x writing speed

Brand	C1		C2		Average Burning Time (mins)
Brand	Max	Average	Max	Average	Average Burning Time (mins)
Mitsui 74min (16x)	46	2.6	0		3:59
Taiyo Yuden 74min (24x)	16	0.2			3:27
Taiyo Yuden 74min (32x)	10	0.2			3:28

Taiyo Yuden 80min (40x)	22	0.6			3:38
Prodisc 80min (32x)	23	1.5			3:51
Mitsubishi Chemicals 80min (40x)	21	0.9			3:37
Imation 80min (32x)	35	3.3			4:15
Vivastar 80min (16x)	1161	202.1	82	0.3	5:38
Hitachi Maxell 80min (32x)	34	1.9	0		3:37
Mitsui 80min (40x)	18	0.7	0		3:38

The following graph comes from Mitsui 74min (16x) and we tried to burn at the maximum speed. The drive didn't burn the disc at the maximum recording speed and lowered it, however the graph shows high C1 errors at the speed shift points.

When we used Vivastar 80min 16x media, the drive produces high C1 error rate after 80mins and also C2 errors at the end of the disc. Even when the drive lowered its recording speed down to 16x (5:38mins) it didn't avoid producing high error rate: