User manual

POSCOPE4 AND MEGA1+ MANUAL
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SPECTRUM ANALYZER
Spectrum analyzer measures signal amplitude over wide range of frequencies. It plots a waveform of
signal amplitude (Y axis) against frequency range (X axis). With spectral analyzer you can find out the
dominant frequency of a known signal and the amplitude / frequency of the unknown or undesired
signals, as well as signal’s other spectral components (power, distortion, harmonics, bandwidth, etc.)
PoScope4 uses Fast Fourier transformation (FFT) for a frequency analysis of an electric signal. It is a
mathematical process that is used to transform a waveform into the components of a signal’s
frequency.
Spectrum analyzer can be used for variety of tasks, including:
 finding dominant frequency
 searching for signal interferences
 characterization of electronic devices
 benchmark testing
 detecting unknown signals
 EMC testing.
With appropriate transducers, you can even measure non-electric frequencies, such as in audio or
visual applications.
You can open the spectrum analyzer by clicking the Frequency analyzer icon in the DISPLAYS tab of
PoScope4 software: