Variable throughput criterion

For measurements made under the variable throughput criterion, a greater penalty is paid for increasing the resolution. In this case not only is Av halved, but so is 0 (see Eq. 7.11). Thus, the SNR is reduced by a factor of 4 (i.e., the noise level of the 100% line is quadrupled). In this case, the measurement time must be increased by a factor of 16 to regain the original SNR. 

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