CyberDrive DX082D DVD+RW- Page 10

Writing Quality Tests - C1 / C2 Error Measurements

We measured the C1 / C2 error rate on the recorded discs burned at the various supported writing speeds. The software used was UMDoctor Pro II, and the reader for retrieving the error information was the Optorite DD0203. The charts below illustrate the Q-Check graphs for various CD-R media and speeds.

• Taiyo Yuden 48x recorded at 8x

• Taiyo Yuden 48x recorded at 12x

• Taiyo Yuden 48x recorded at 16x

• Taiyo Yuden 48x recorded at 24x

• Taiyo Yuden 48x recorded at 32x

• SKC 48x recorded at 32x

• Emtec 48x recorded at 32x

• Ritek 48x recorded at 32x

• Prodisc 40x recorded at 32x

• Imation 48x recorded at 32x

- Summary

The measurements with UM Doctor confirmed the very good writing quality of the drive for all the supported speeds. The C1 error rate is very low, and only in one circumstance was there a C2 error, specifically with the Taiyo Yuden media recorded at 32x.