Performing Fft Operations - Tektronix TDS1000B Series Operator's Manual

Performing FFT Operations

FFT is an algorithm used to transform time-domain
information into frequency domain information. You use the
FFT operation in an oscilloscope to view and measure
repeating complex waves as sine wave components. For
example, you can use FFT for radio frequency analysis of
radio transmitters, as well as for vibration analysis of
mechanical devices. You can also use FFT to analyze the
distortion of a sine wave being generated by a circuit. FFT is
useful for:
•
Analyzing spectral purity of a carrier wave signal.
•
Performing frequency conversion measurements on
signals such as the output of a balanced mixer.
•
Measuring the amplitude modulation index of an AM
signal.
•
Measuring the transmission bandwidth of a FM signal.
•
Viewing the spectra of a repetitive RF pulse.
TDS1000B and TDS2000B Series Oscilloscopes – Operator Training Kit
Using VERTICAL Controls
3
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