Power Spectrum Interface: Area in which Fourier Power Spectrum of EOD using the Plot - Fourier Transform command. Right click on window to display following options: Power Spectrum Grid, PPF Lines, Power Spectrum Lines, Save Full Power Spectrum, Save Summary Power Spectrum, Print Power Spectrum, Copy Power Spectrum, Close Power Spectrum.

Power Spectrum Grid: Display reference grid. Amplitude divisions from 0 to -36 dB at divisions of 0.5, 1, 2, 3, 6, 9 dB etc. Frequency divisions from 0 to 45 kHz at divisions of 0.5, 1, 2, 3 kHz etc.

PPF Lines: Display green reference line showing PPF (Peak Power Frequency) and red lines showing the following levels of attenuation at values below and above PPF: 0.5, 1, 2, 3, 6, 9, 12, 15 dB. These reference lines are easier to interpret with the Power Spectrum Grid OFF.

Power Spectrum Lines: Display Fourier Power Spectrum data as lines or dots.

Save Full Power Spectrum: Saves full output of Fourier Power Spectrum data in spreadsheet format. The following information is exported: 1, file name; 2, full data set in two columns with amplitude (dB) left and frequency (kHz) right; 3, summary of Minimum Mean and Maximum PPF values, values for frequency (kHz) at attenuations of -0.5, 1, 2, 3, 6, 9, 12, 15 dB (below and above PPF).

Save Summary Power Spectrum: Saves summary output of Fourier Power Spectrum data in spreadsheet format. The following information is exported: 1, file name; 2; Minimum, Mean and Maximum PPF values, frequency values (kHz) from 0 to 25 dB at attenuations of 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4 dB etc. (below and above PPF).

Print Power Spectrum: Prints graphics displayed in Power Spectrum Interface and the following text: 1, file name; 2, values for kHz at attenuations of 0 (= PPF) 05. 1, 2, 3, 6, 9, 12, 15 dB.

Copy Power Spectrum: Copy (to Windows clipboard) graphics displayed in Power Spectrum Interface and a text summary (same as in Save Full Power Spectrum). Paste text using Edit - Paste. Paste graphics using Edit - Paste Special - Picture (for best results specify Enhanced Metafile).

Close Power Spectrum: Close Power Spectrum Interface. Zoom settings for dB and kHz will be retained on subsequent opening.

Power Spectrum Cursor: Positioned on the Fourier Power Spectrum. Move left or right with the mouse or with the arrow keys of the keyboard.