Cutoff (Cutoff Value) | Surface Roughness Terminology

The cutoff refers to the predetermined wavelength to be removed from a primary profile. A roughness profile is created by removing the long-wavelength component from the primary profile, and a waviness profile is created by removing the short-wavelength component from the primary profile. A 2 CR filter is normally used with contact-type surface roughness instruments, which uses electrical circuits consisting of capacitors and resistors. However, with digitalization becoming more popular, the phase compensation digital filter (Gaussian filter) has been widely used in recent years. The cutoff used for the MultiFileAnalyser utilizes the Gaussian filter as well.