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We describe in general terms the practical use in astronomy of a higher-orderstatistical quantity called Spectral Kurtosis (SK), and describe the firstimplementation of SK-enabled firmware in the F-engine (Fouriertransform-engine) of a digital FX correlator for Expanded Owens Valley SolarArray (EOVSA). The development of the theory for SK is summarized, leading toan expression for generalized SK that is applicable to both SK spectrometersand those not specifically designed for SK. We also give the means forcomputing both the SK estimator and thresholds for its application as adiscriminator of RFI contamination. Tests of the performance of EOVSA as an SKspectrometer are shown to agree precisely with theoretical expectations, andthe methods for configuring the correlator for correct SK operation aredescribed.

EOVSA Implementation of a Spectral Kurtosis Correlator for Transient Detection and Classification