Writing Quality Tests for CyberDrive CW078D

We used many media, including 40x certified, and burned them at various recording speeds with CyberDrive CW078D. The produced CDs, were measured from DigitalDrives and results are illustrated in the following tables:

- 32x writing speed

The drive produces low C1 error rate with Taiyo Yuden 74min (24x) and also very good recording times. With Mitsui 80min (40x) media, the recording quality is very good but C2 error is also present.

- 36x writing speed

Again the recording quality is very good with Taiyo Yuden 24x media and the average C1 error rate with Mitsui 40x even its low, C2 error are also present.

- 40x writing speed

The recording time tests from the 40x speed are very good with specific media. The drive gives the absolute recording times but not with the perfect quality. The drive needs improvement in that area since even with high quality media C2 errors are present. When using Vivastar 80min media, the results are very bad, since the drive doesn't lower enough its recording speed. As it seems the lower recording times comes with a price in writing quality.

The following picture comes from Taiyo Yuden 74min write at the 24x recording speed. The writing quality is very good until 50mins. Then the drive produces high error rate.

The following graph comes from Hitachi-Maxell 80min 40x media written at the 40x recording speed. The writing quality is very good but a C2 error occurs at the end of the disc. This also happened with several other media:

The following graph comes from Taiyo Yuden 80min 40x media written at 28x recording speed. The writing quality above 60mins seems lower and high C1 and C2 errors occur:

The following graph comes from Taiyo Yuden 80min 40x media written at 40x recording speed. The writing quality above 60mins is decreased and high C1 and C2 errors occur: