Section 4. Advanced Features and PlexTools Professional
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PX-716UF Installation and Users Manual
2. From the PlexTools menu bar, select Q-Check TA Test. You see the
TA window.
Figure 24: Q-Check TA Test window showing results with a high-
quality disc
3. Click the Start button. You see a window that lets you select the test
area: the inner zone, middle zone, or outer zone of the disc. If this is
a double layer disc, you can also select the layer.
4. Select the zone and layer and click OK. After a few moments, you
see a histogram showing frequency distribution of the lands and pits
in the disc.
What the Histogram Means
The histogram gives a graphic representation of jitter—that is, the
variation of the 3T segment, the 4T segment, etc. The test measures the
time intervals between each two successive pit/land transitions and
compares them with DVD specifications. The test is done on a specific
area (inner, middle, or outer) of the disc.
