Fmax and Fmin

The Fmax and Fmin values set the maximum and minimum frequency limits for your measurements. Equipment with high operating speeds requires a higher Fmax to capture all crucial information. The Fmin (low cutoff) removes very low frequency integration noise from the overall measurement and is normally set at 2 Hz. You can set Fmin to 0, but the minimum value is the second line in the spectrum, where the Fmin value is equal to 2x line resolution.

Measurement Recommended setting
Fingered elements such as gear teeth, fan blades, pump vanes, and bearing elements (3 x the number of fingers) x the operating speed
Non-fingered elements 10 x the operating speed
Coast up, coast down recordings 200 to 400 Hz (12,000-24,000 cpm)