Spectrum analyzer window:
This figure displays the main program window when operating in spectrum analyzer mode. Most window elements in this mode are similar to the corresponding elements when operating in the oscilloscope mode. The exception being that the horizontal axis is set as the frequency axis; the time base is set as frequency/screen and the voltage scale is negative amplitude-free.
New elements specifically relating to spectrum analysis are shown. For example, on the panels "Channel A/B (Volt/Screen)" there are additional "V / dB" and "0 dB = 0.775 V/0 dB = Umax" buttons 1 and 2 buttons. The first button determines the units that express the vertical scale: either Volts or dB. The second button (which is active only if the first one is pressed) determines the voltage level that corresponds to 0 dB: either 0.775 V or the maximum voltage value along the whole frequency axis for the set channel.
On the "Frequency" panel button 3 has been added to determine whether the frequency axis is linear or
logarithmic.

The “Triggering” panel has been replaced by the FFT window function settings panel 4. On this panel there is a dropdown list containing some common window functions: Hamming, Hanning, Blackman, Blackman-Harris.

Panel 5 has also been added and is for the calculation of nonlinear distortion factor or harmonic distortion factor (HDF). On this panel you can view the results of general calculations of HDF, HDF of harmonic thirds and frequency of the first (main) harmonic, which can be forced in the field F1 or calculated automatically when ticking the [+] Max flag.