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Thermo Fisher Scientific

TN 9364 - Measuring the Signal-to-Noise Ratio of an Infrared Spectrometer


Evaluating the performance of an infrared spectrometer includes a number of tests such as measuring the signal-to-noise ratio (SNR), stability, spectral range, linearity, resolution, and wave length accuracy. While all of these tests are very important, the one which receives most frequent review is the signal-to-noise ratio.