|Spectrum of a tuning fork|
The spectrum (FFT) offers a view to all frequency components within the signal provided by the TX-Driver. This enables the visualisation of fundamental and harmonic oscillations. The single channelversion provides a frequency range up to 19 kHz. This covers the acoustic range. The figure shows the spectrum of a tuning fork. Besides visualisation - the frequency components are analysed above a defined threshold. The figure clearly shows the fundamental oscillation with 49 µm and a second and third harmonic with 250 nm and 100 nm. Same as with the oscilloscope the spectrum can be exported as picture or text-file.
Learn more about the analysis module FFT in the eddylab video