Table 2. Relationship between the S/N ratio and standard deviation of error (Hz).
Input frequency 1,000 Hz
S/N (dB)
Standard deviation of error (Hz)
F/V analog device
+20
+/−0.2
+8
+/−4.1
Autocorrelation+SG
+8
+/−0
−11
+/−1.8
−14
+/−4.0