Let's start with the automatic mode first. The user selects the frequency range and the program then automatically calculates the optimum frequency resolution. Changes in the frequency range result in an adjustment of the FFT.
Let's do a practical frequency analysis. All we need to do is start the instrument. We select "velocity" as the measurement parameter. The machine model is also started and now speeds up to the operating speed.
We see lines moving to higher frequencies in the InnoAnalyzer. These are single component vibrations or multiples of them with increasing speed. When the operating speed is reached, the lines stop. We now select the range of 1-100Hz with the right mouse button. The FFT is newly set up and the data progress increases in the lower right-hand corner. At 50 Hz we see a strong line.
This is the operating speed of 3000 rpm. Instead of the display in Hz, you can also change to rpm. The unit of the frequency axis only needs to be changed in the "Display" tab
For basic frequency analysis, the automatic mode offers a quick way to determine frequencies.