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Nyquist frequency

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
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Noun1.Nyquist frequency - (telecommunication) twice the maximum frequency occurring in the transmitted signal
telecom, telecommunication - (often plural) systems used in transmitting messages over a distance electronically
sampling frequency - (telecommunication) the frequency of sampling a continuously varying signal


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To acquire accurate data bolow 5 kHz, the time history will have to be processed to insure that any energy, above the Nyquist frequency (sample rate/2) of 10 kHz, that would fold into the frequency range of interest (5 kHz.
The bandwidth of the signal is the Nyquist frequency, which is roughly one-half times the bit rate.
A real-time oscilloscope, on the other hand, samples the signal under test at a much higher rate, ideally greater than the Nyquist frequency relative to the highest significant frequency content being measured.
 
 
 
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