oise & Frequency Analysis There are many cases, where high vibration amplitudes are not caused, only by rotor unbalance. In such cases vibration Analyzer (with tracking filter section) covering broad frequency range, can offer specific 'SINGNATURE' of rotating body to identify the Sources of vibrations. This helps to conclude the Source of Vibration like : 1) Misalignment 2) Bend shafts 3) Gear backclashes etc. 4) Worn out bearings & Surfaces 5) Weakness of Foundation Structure