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Vibration analysis is a process that monitors the levels and patterns of vibration signals within a component, machinery or structure, to detect abnormal vibration events and to evaluate the overall condition of the test object.

Benefits of early vibration testing include:Predictability. Give maintenance staff time to schedule required repairs and acquire needed parts.Safety. Take faulty equipment offline before a hazardous condition occurs.Revenue.Increased maintenance intervals.Reliability.Peace of mind.

F-MAX means Frequency Max. This is the maximum frequency range used when capturing vibration data on a spectrum. For example, with a rolling element bearing, F-MAX should be set to 70 times the run speed.

Technically, sampling frequency is the frequency at which the data collector samples the real analog signal in to digital signal. As per Nyquist Theorem, sampling frequency must be greater than or equal to 2.56 times the maximum frequency of interest.

Sampling rate or sampling frequency defines the number of samples per second (or per other unit) taken from a continuous signal to make a discrete or digital signal.

The sampling interval is an important parameter which must be chosen carefully, if measurements of the direct, global, and diffuse irradiance or illuminance are carried out to determine their averages over a given period.

LINES OF RESOLUTION Each line will cover a range of frequencies, and the resolution of each line can be calculated simply by dividing the overall frequency (Fmax) by the number of lines. For example, an Fmax of 120,000 CPM and 400 lines gives a resolution of 300 CPM per line.

The sampling frequency (or sample rate) is the number of samples per second in a Sound. For example: if the sampling frequency is 44100 hertz, a recording with a duration of 60 seconds will contain 2,646,000 samples.

Sampling rate (sometimes called sampling frequency or Fs) is the number of data points acquired per second. A sampling rate of 2000 samples/second means that 2000 discrete data points are acquired every second. This can be referred to as 2000 Hertz sample frequency.

The magnetic flux produced by current-carrying conductors in AC machines alternates at line frequency (FL). Therefore all AC motors produce a 2 X line frequency vibration. In power systems that operate at 60 Hz, the vibration frequency is 120 Hz.The pole pass frequency will appear as sidebands in the spectrum.