Pacific Digital U-30201 DVD±RW recorder - Page 11

Writing Quality Tests - C1 / C2 Error Measurements

The C1 / C2 error rate was measured for the recorded discs burned during the previous writing tests (jitter). The software used was UMDoctor Pro II, and the reader the Optorite DD0203 drive.

Throughout this preview, we have been able to compare the results of the Pacific Digital drive to those of the LiteOn LDW-811S since they are basically the same drive. While some tests have produced results that appear to be carbon copies, others have shown the variations that can take place from one drive to another, even though they may be of the same design. And certainly this series of quality tests has produced the biggest differences between the two drives.

• Taiyo Yuden 48x recorded at 8x

• Taiyo Yuden 48x recorded at 16x

• Taiyo Yuden 48x recorded at 24x

• Taiyo Yuden 48x recorded at 32x

• Taiyo Yuden 48x recorded at 40x

• Fuji 48x recorded at 40x

- Summary

The results are somewhat mixed. Firstly, there were no C2 errors reported (red line in each of the graphs above). The C1 levels however, showed that Taiyo Yuden media had the most problems, along with Fujifilm. Ritek, as in the jitter tests, returned the best results while the remaining manufacturers media also faired well.