User manual NERO DISCSPEED 9

[. . . ] Manual Nero DiscSpeed Copyright and Trademark Information Copyright and trademark information This document, like the software described therein, is provided as a license and may only be used or reproduced in accordance with the licensing agreement. The contents of this document, as well as the associated software, is subject to change without prior notice. Nero AG rejects any responsibility for the correctness of the contents of this document and rejects any claims that transcend the clauses of the guarantee agreement. This document and all of its contents are protected by copyright and are the property of Nero AG. [. . . ] Capacity Shows the disc capacity both in MSF (minutes/seconds/frames) and in MB. Additional capacity achieved through overburning is not incorporated into the calculation. You will find further information on the disc in the drive in the Extended Information area. The following display panels are available: Layers Write strategies Shows the number of available layers on the disc. whether the disc is still totally blank, already finalized or can accept more data. Copyright protection Shows whether or not the disc in the drive is copy-protected. Disc status You will find information on binary data that was previously burned to the disc in the Raw Data area. Nero DiscSpeed 38 Disc Quality tab 8 8. 1 Disc Quality tab Quality Test The Disc Quality test is often referred to as Scan, and can be run on the Disc Quality tab. As a result, it requires less time than a complete scan but is less accurate. It can only be run reliably with a recorder; a simple reader is not sufficient. The results are displayed in two graphs: the top one shows the results for C1 errors/PI errors (for CD's and DVD's respectively), while the bottom one shows the results for C2 errors/PI failures (for CD's and DVD's respectively). In the top graph, the vertical scales on the left show the number of C1 errors/PI errors and the vertical scales on the right show the write/read speed. In the bottom graph, the vertical scales on the left show the number of C2 errors/PI failures and the vertical scales on the right show the jitter value. The horizontal scale in both graphs shows the disc capacity, in MB for CD's and in GB for DVD's. If you want to omit a protected area from the bottom graph, enable the Use background to show error limits check box in the options under the Disc Quality navigation entry. In addition, both test results and data on the test in progress are shown in the Disc info area and in a number of other display panels to the right of the graph. In the PI errors, PI Failures, and Jitter areas under the graph, information on the disc quality is displayed in realtime while the test is run. The number of PO failures is also shown here. Nero DiscSpeed 39 Disc Quality tab If the Include test data check box has been enabled in the options under the Transfer Rate navigation entry, an additional display panel showing information on the recorder and the firmware used to burn the disc in the drive is shown above the graph. Disc Quality tab You can define preferences for the test in the Settings area to the right of the graph. In addition, the necessary basic settings in the options under the Disc Quality navigation entry must be met. The following setting options are available on the tab: Menu Speed Button Defines the speed at which the test is run. The available entries in the drop-down menu vary depending on the disc in the drive. If there are several drives connected to your computer, we recommend that you refresh the data once you have chosen the optical drive for the test. Input field Start Defines the start value from which the test should run. Select the value 0000MB to start the test from the beginning of the disc. Nero DiscSpeed 40 Disc Quality tab Input field End Defines the end value up to which the test should run. For a burned disc, this value may deviate from the maximum capacity, since the data may either not fill up or exceed the maximum capacity. [. . . ] The linear velocity increases as you move away from the center towards the outer edge. Angular velocity (also called rotational speed) describes the change in the rotation angle over time independently of the radius of the disc, i. e. the velocity at which an object loops a sector. RPM Revolutions per minute (RPM) is an English unit that is used in mechanics to represent rotational speed. It indicates the number of complete revolutions per minute. Search Time The seek time is the time the drive needs to move the read head to a specific position on the disc that is inserted in the drive. [. . . ]