D.E.V.I.C.E. is an encyclopedia of terms used by manufacturers of test and measurement equipment. T&M Atlantic created this service to better explain the functionality of instruments it offers, and to highlight the latest developments in the world of measurement equipment. We are using such tools as animation to bring words and pictures to life and to create not just an understanding but also an appreciation for technology that goes into the design of every instrument.
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Noise whose probability distribution or probability density function is gaussian, that is, it has the standard form
where σ is the standard deviation.
Noise that is steady or stationary in character and originates from the sum of a large number of small events, tends to be gaussian by the central limit theorem of probability theory.
Source: Keysight Technologies. Fundamentals of RF and Microwave Noise Figure Measurements. Application notes. www.keysight.com