Section 8: Measurement Types And Their Uses; Spectrum - Commtest Instruments vbBalancer Instrument Reference Manual

Section 8: Measurement Types
and Their Uses
This section describes how to setup and take different
measurements types.
You will learn:
How to take different types of measurements
•
The uses of different measurement types
•

Spectrum

A vibration spectrum is a chart of vibration amplitude versus vibration
frequency. The vibration spectrum of a machine component shows
the frequencies at which the component is vibrating and the
amplitude of vibration at each of these frequencies.
Spectra consist of discrete spectral lines displayed at fixed frequency
intervals. The height of each spectral line represents the amplitude of
vibration at that frequency. The more spectral lines in a spectrum,
the higher the resolution of the spectrum (but more memory is used).
A simplified illustration of a discrete vibration spectrum
The key parameters you need to set are the number of spectral lines
and the Fmax to ensure that all crucial information is captured.
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Section 8: Measurement Types and Their Uses