|An outstanding property of the whole DIO 562 family is the possibility to evaluate the received signals not only in the commonly used time domain (A-scan) but also in the frequency domain. The frequency spectrum is achieved by the fast Fourier transform (FFT) incorporated in the instrument. In the next figure (Fig. 2) as example there is shown the screen display of tan echo sognal (time domain) and its frequency spectrum together with the setup parameters.|
|Together with the A-scan the setup parameters are
displayed. Instead of it a 2-D display of the same scan may be shown, if
appropriate probe movement is assured.