Section 5. Advanced Features and PlexTools Professional
PX-716 Installation and Users Manual 77
The quantity of these errors are a measure of media and drive quality.
High quality media, combined with a high quality drive, will have
recorded data with some C1 errors and no C2 errors. Poor quality media,
or media with scratches, fingerprints or other defects in the disc surface,
or written on a drive that has poor write quality, will show a higher
number of C1 errors and perhaps some C2 errors.
The best method to determine media quality is to compare your media
against media from Plextor’s list of recommended media vendors. (See
page 114.) If your discs consistently show a high number of C1/C2
errors, you should try another brand of media. If the graph reports CU
errors, the disc is defective and should be discarded.
Because the Plextor PX-716 can report the number of C2 errors, audio
extraction applications can use this reporting to guarantee that the
extracted audio matches the original.
NOTE: This function measures C1/C2 errors in all kind of discs and
recording modes, even if they were recorded on another drive. It is,
however, recommended to use this measurement on CD-R media
recorded by DAO (Disc-at-once).
Measuring Tracking and Focus Error
Supported in PlexTools Professional software, this function reports on
the mechanical characteristics of the DVD or CD you’re using in the
Plextor PX-716 drive. It actually measures the amplitude of the laser
focus error and tracking error, and displays the results. This function
tests blank CD-R, DVD+R and DVD-R media. (It’s not for CD-RW,
DVD+RW, DVD-RW, DVD+R DL, or DVD-R DL discs.)
