Application Note
Application Note: Understanding Noise Equivalent Power In Radiometric Detectors And Instruments
Source: Spectrum Detector has become Gentec-eo USA, Inc.
Noise Equivalent Power, or NEP, is a basic indicator of detector performance. NEP is the
noise floor of a detector, normalized to a 1Hz bandwidth. NEP is expressed in Watts per
square root bandwidth. To derive NEP, two parameters must be measured: the detector
responsivity at a specified frequency, and the detector voltage noise at the same
frequency.
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