\"Examine\"] and enter it in the table. To increase the precision of the measurement, it is best to neasure the time difference between two peaks separated by several oscillations and then divide the result by the number of oscillations. :2) Calculate the frequency f = 1 / T from the measured T :3) Determine the frequency using the FFT feature [Tab \"Insert\" ) \"Additional Graph\" > \"FFT 3raph\"]. The FFT plot should show several clear peaks. To read a cluster center frequency, zoom n on the plot or go to the FF T table and look up the column with the data. :4) Print [Tab Print > Print Graph] your two FFT spectra and attach them to this report