Table 13.

Ratio and phase errors of LPVT in harmonics and interharmonic measurements.

	Harmonics		Interharmonics
	$\mathit{\epsilon }\left(\mathit{h}{\mathit{f}}_0\right)$ (%)	$\Delta \mathit{\phi }\left(\mathit{h}{\mathit{f}}_0\right)$ (rad)	$\Delta \mathit{\epsilon }\left(\overline{\mathit{f}}\right)$ (%)	$\Delta \mathit{\phi }\left(\overline{\mathit{f}}\right)$ (rad)
Test Point 1	−1.42	0.026	−0.85	0.01
Test Point 2	−2.20	0.056	−3.55	0.18
Test Point 3	−5.56	1.2	−5.57	1.22