Digital
Digital instrumentation consists of devices that convert analog signals into a series of numbers through a sampling process and an analog to digital converter. They then perform operations on the numbers to achieve such effects as equalization, data storage, data compression, frequency analysis, etc. This process in general is called digital signal processing, and is characterized by certain advantages and disadvantages. One advantage is that the converted signals can be manipulated, transformed, and copied without introducing any added noise or distortion.
The disadvantage is that the digital representation may not be truly representative of the original signal. Care must be taken that the sampling rate is high enough to encode all the information of interest, and that artifacts are not introduced by aliasing.
Azima DLI provides products and services for Predictive Maintenance including vibration analysis instruments, monitoring and diagnostic software, and consulting for CBM programs.
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