... , small volumn, light weight, convenient for long-distance carrying and bad industrial fields using. ... FFT analysis2).Envelop Modulation, Cepstrum, Eigenvalue calculation3).Long time domain waveform, Overall value trend4).XPM, ... , Velocity Pickups, Displacement Probes, photoelectricity speed sensorSignal range±40VSignal typeAcceleration, Speed, Shifting, VoltageFrequency RangeDC~40kHz, ...