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Frequency Deviation




The amount by which a Frequency differs from a prescribed value, such as the amount an Oscillator frequency drifts from its nominal frequency.

In Frequency Modulation , the absolute difference between the maximum permissible instantaneous frequency of the modulated wave or the minimum permissible instantaneous frequency of the modulated wave and the Carrier Frequency . Usually written Δf.

In frequency modulation, the maximum absolute difference, during a specified period, between the instantaneous frequency of the modulated wave and the carrier frequency.

Source: from Federal Standard 1037C and from MIL-STD-188


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