Table 4.

Number of points, n_w, measured by NIDAS and ABDAS in one single period of the reference signal, and highest Fourier harmonic term, y_max, able to be correctly extracted.

Reference signal (Sine-Wave) Frequency	NIDAS		ABDAS
	nw	ymax	nw	ymax
10 Hz	500	y249	83–84	y41
50 Hz	400	y49	16–17	y8
100 Hz	50	y24	8–9	y4
250 Hz	20	y9	3–4	y1