Quantization efficiency

The Analog-to-Digital-Converter (ADC) will quantize the analog signal on a finite number of bits. This can be seen as an additional source of noise that is modeled as a spectrometer efficiency $(\ensuremath{\eta_\ensuremath{\mathrm{spec}}}\le 1.0)$ and Eq. [*] becomes

$\displaystyle \ensuremath{\sigma_\ensuremath{\mathrm{K}}} = \frac{\ensuremath{T...
...}}\,\sqrt{2\,\ensuremath{d\nu}\,\ensuremath{\Delta t_\ensuremath{\mathrm{}}}}}.$ (3)