While Grafana only allows you to visualize the raw signal values (processed or unprocessed), a frequency spectrum can be generated from the data in the RAM of a HUB-VM102 using Fourier transform (FFT). The signals are broken down into their frequency components and the amplitudes of the respective frequency components are displayed with in.hub Waves. This allows conclusions to be drawn about frequency and amplitude changes in rotating parts. You can then see on the screen, based on typical frequency patterns, where and when maintenance needs to be initiated before the machine comes to a standstill.