The Disc Quality navigation entry offers setting options for the quality test in the General, QuickScan, Diagram Margins and Colors.
The following check boxes are available in the General area:
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Detect speed settings
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The speed the Disc Quality is tested, can change with the choosed optical drive. The speed is connected to the recorder model and the installed firmware. If the check box is active, Nero DiscSpeed automatically detects the speed, as soon as the Disc quality tab in the main screen is selected. If this box is not checked, the speed must be manually detected.
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Show error limits
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Shows the intervals in the diagram of the graphical representation in colored graduations.
Depending on the optical drive model and the intervals at which they occur, detected errors can be classed at a glance as permissible, tolerable, or unacceptable.
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Show statistics
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Shows a statistical overview of the results at the end of the test.
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Show disc label
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Shows the disc label on the Disc Quality tab.
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In the QuickScan area you can define the options for the quick scan. The Disc Quality could be executed as complete scan. You can choose between the quick and the full scan on the Disc Quality tab. The quick scan only checks defined points on the disc. All other areas are ignored. As a result, it requires less time than a complete scan but is less accurate.
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Measure points
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Defines how many points on a disc will be checked during the quick scan.
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Sample Length
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Defines the size of each scan point in MB.
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In the Graph limit area you can define the maximum scale limits for the graphical representation of the error curves. The following setting options are available:
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Option button
Automatic
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Automatically adapts the graduated scale values to the number of errors measured. A value of 10 is defined as the initial value for both C1 Errors/PI Errors and for C2 Errors/PI Failures.
If more errors are found, Nero DiscSpeed automatically adapts the scales to the higher value.
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Option button
Locked
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Defines the maximum values on the scales as locked. Enter the values you want in the C1 Errors/PI Errors and C2 Errors/PI Failures text boxes.
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Selection area
Maximum CD speed
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Defines the maximum value that will be displayed in the C1 Errors/PI Errors curve for write and read speeds.
This value is separately defined for CDs and DVDs.
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In the Colors area you can define the colors on the Disc Quality tab in the main screen. The following setting options are available:
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Menu
Theme
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Selects the desired theme. In addition to predefined themes, you can also set colors with the costum entry. To manually edit a color, click the colored tile and select the color you want in the dialog box that appears.
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Button
Background 1
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Changes the basic color in the background of the graph area.
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Button
Background 2
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Changes the basic color for shading in the background of the graph area.
Only works when the Background 2 check box is enabled. Otherwise, the background of the graph area is displayed in one single color.
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Button
Grid (primary)
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Changes the colors for the coarse grid in the graph area.
Only works when at least one of the following check boxes is enabled: Show horizontal grid and/or Show vertical grid.
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Button
Grid (secondary)
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Changes the color for the fine grid in the graph area.
Only works when at least one of the following check boxes is enabled: Show horizontal grid and/or Show vertical grid.
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C1/PIE
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Line signifying the C1 errors/PI errors in the graph.
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C2/PIF
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Line signifying the C2 errorsPI errors in the graph.
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Jitter
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Representation of Jitter in the graph.
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Read speed
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Line signifying the Read speed in the graph.
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Write speed
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Line signifying the write speed in the graph.
This curve will only be displayed if the Include test data box has been checked under the Transfer Rate navigation entry.
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Check box
Show horizontal grid
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Shows the horizontal grid lines in the graph area or hides them. This box is checked by default.
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Check box
Show vertical grid
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Shows the vertical grid lines in the graph area or hides them. This box is checked by default.
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| C1 errors |
A C1 error describes the error rate on the lower layers of a burned CD that are automatically corrected during reading. Every recordable disc features these errors; the fewer they are, the better the quality.
| PI Errors |
Parity of inner code is part of the structure of a DVD’s data block, and is used for error correction purposes. If a PI in a DVD cannot be read, one speaks of a PI error.
| C2 errors |
A C2 error describes the error rate on the lower layers of a burned CD that are automatically corrected during reading. Every recordable disc features these errors; the fewer they are, the better the quality. High C2 error rates indicate burn problems or quality flaws.
| Jitter |
Jitter refers to an abrupt and undesired change in the signal characteristics. Small gaps occur in the data stream as a result. Audio correction synchronizes the data by overlapping the sectors. This way, the gaps are not audible.
| Read Speed |
The read speed of a drive is a factor of the speed that the laser needs in order to read the data on an optical storage medium, e.g. 8x or 16x speed.
| Write Speed |
The write speed indicates the speed at which a drive can write data to the optical storage medium, e.g. 8x or 16x speed.