Difference between revisions of "Campbell Diagram Tool"

Campbell Diagram Tool (view source)

662 bytes removed , 23 July

9,435

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 * Enable '''Spectrogram background''' to see the full spectral energy distribution.
 * Reduce '''Peak threshold''' (less negative) to show only the strongest peaks; increase it (more negative) to reveal faint features.
-=== Metrological note on waterfall source ===
-When using '''raw signals''', the tool applies the rigorous RPM-bin method: one independent FFT per RPM bin, driven by the tacho. This eliminates speed-smearing and gives accurate amplitudes at all orders.
-When using a '''pre-computed waterfall''' (.res), the STFT windows are fixed in time. At sweep rates above ~50 RPM/s and for orders higher than 5×, some amplitude underestimation and peak broadening may occur. For resonance location (critical speed identification), this is generally acceptable. For amplitude-critical measurements (API acceptance tests, ISO compliance), prefer raw signals with a tacho.
 ==Disclaimer==