: Specific tracks used with an oscilloscope to view the eye-pattern (RF signal level) and calibrate tracking/focus gain. Technical Specifications
When a CD player is repaired—for example, after a laser lens replacement—the new assembly must be calibrated to the player's mainboard. sony test disc yeds7rar
Key features/tests included
Used to test the digital-to-analog conversion and signal-to-noise ratios. : Specific tracks used with an oscilloscope to