Spectrum amplitude :

Abstract

This technical note is a detailed discussion of the electromagnetic quantity, spectrum amplitude, which is used to characterize broadband signals and noise. The definition of spectrum amplitude is presented in detail. Several practical means of generating electrical signals with broadband spectrum amplitudes are included. Various techniques for the measurement of spectrum amplitude are described along with experimental comparisons. The NBS measurement service for the calibration of impulse generator spectrum amplitude is described along with an error analysis.

Impulse spectrum amplitude uncertainty analysis

“…The National Institute of Standards and Technology (NIST) supports a service [1] for measurement of the parameter of impulse spectrum amplitude (ISA) [2] for the output of highspeed (pulse durations <1 ns) impulse generators. Other names for ISA that have been used are spectrum amplitude, voltage spectrum, impulse strength, spectral intensity, impulse spectral intensity, impulse area and spectral density.…”