Mitsumi CR-485FTE - Page 7

Writing Quality Tests

We used Taiyo Yuden 80min 48x CD-R media and burned the same AudioCD project (with CD-Text) at all the available recording speeds. Below you can see the 3T Pit & Land Jitter graphs.

- 3T Pit results

According to the measurements, the jitter values are low for all the writing speeds throughout the range of 8-32x speeds.

The 48x recording speed introduced higher jitter values after the 60min of the disc, where the writing speed was approximately 44x (CAV). The jitter reached the 42msec in the outer parts of the disc.

The specific media could not be burned at 54x. The drive reduced the writing speed as soon as it reached the 48x, and this is confirmed by the duration of the writing process. Thus, the 3T Pit jitter reached the 42msc limit by the 60min address of the disc (48x), and was decreased to lower values as soon as the drive slowed down to finish the writing task at a lower speed. As a result, we cannot make out the drive's behavior at 54x writing speed, with this particular media. The following page includes jitter measurements with various media and there you can come up with more conclusions.

In the above graph you can see the average 3T Pit jitter values for all the recording writing speeds, with Taiyo Yuden 48x media. Note that the average values can hide any possible problems caused by high jitter peaks in specific areas of the discs. However, we get an overall idea of the drive's performance.

- 3T Land results

The average 3T Land results are almost the same as in the previous measurements of the 3T Pit Jitter. Again the drive gave higher jitter at 48x and 54x (which was actually only a 48x recording speed).

Below you can see the average 3T Land jitter values for all the supported writing speeds:

- Summary

To sum up, the Mitsumi CR-48XFTE gave very low jitter for the writing speeds up to 40X. Writing at 48X produced higher values that reached 42msec, but in any case the overall performance with the Taiyo Yuden 48x media is adequate. On the other hand, notice that these results are not applied to the 54x writing speed, since the drive did not write at this speed with the particular media.