Patent ID: 8543894
Filing Date: 2013-09-24
Classification: G06F,G11B,H03M

Abstract:
1. A method for evaluating a data storage device, the method comprising: selecting a base sector-error-rate (SER) related to a quality of a data storage device; determining a base signal-to-noise ratio (SNR) that corresponds to the base SER; determining a SNR margin based at least in part on a predetermined range of SER; calculating a SNR threshold by adding the SNR margin to the base SNR; storing the SNR threshold in a memory device; measuring a SNR of the data storage device being evaluated; qualifying the data storage device being evaluated if the measured SNR exceeds the SNR threshold stored in the memory device; and rejecting the data storage device being evaluated if the measured SNR does not exceed the SNR threshold stored in the memory device.