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Spread Spectrum Clocking is a way to lower electromagnetic interference or EMI. This is important for storage solutions that are required to pass FCC and other agency certifications. Today, some Serial ATA disk drives implement SSC, some allow you to turn this feature on/off, and some do not implement SSC; it is anticipated that all will implement this feature in the near future.=The technique of modulating the operating frequency of a circuit slightly to spread its radiated emissions over a range of frequencies rather than just one tone. This reduction in the maximum emission for a given frequency helps meet FCC requirements=

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16y ago

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