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The definition of the ENR given in this article is an approximation, that is wrong on a pure theory aspect, and can introduce significant measurement errors if the ENR is lower than approx. 15dB. One exact definition can be, at ~300K : ENR(dB) = 10*log [(10^(PSD_dBm/Hz/10)-10^(-174/10))/10^(-174/10)] — Preceding unsigned comment added by 192.54.144.229 ( talk • contribs) 12:01, 20 February 2017 (UTC)
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The definition of the ENR given in this article is an approximation, that is wrong on a pure theory aspect, and can introduce significant measurement errors if the ENR is lower than approx. 15dB. One exact definition can be, at ~300K : ENR(dB) = 10*log [(10^(PSD_dBm/Hz/10)-10^(-174/10))/10^(-174/10)] — Preceding unsigned comment added by 192.54.144.229 ( talk • contribs) 12:01, 20 February 2017 (UTC)