Table 2.

Different classes of tPCS are summarized including temporal waveform (function), the associated magnitude spectrum (frequency content), and clinical references including dose using “CES”. The Fourier series were generated using the same parameters for T, τ, and A across all classes and the same parameters for h, D₀, T_on, and T_off where applicable. Note n is a discrete function of 1/T (or T_off in the case of Class III). In Class III, the CES case would have D₀ set to zero which would lower the peak at zero. In Class II, h_r = (h + 1)/h, in Class III, T_r = T_on /T_off and in all classes, P = A(τ/T).

	Waveform	Magnitude Spectrum	Notes
Class I(A) - Monophasic Pulse			-ES2 -CET6 -EA2
Class I(B) - Monophasic Pulse with DC offset			-ES2,6 -EA2 -CET2,6 -TCET6,2
Class II(A) – Biphasic pulse			-CES7
Class II(B) - Biphasic Pulse with delay			-TCET -CET -NET4 -CES5
Class II(C) - Asymmetric Biphasic Pulse
Class II(D) – Asymmetric Biphasic Pulse with delay			-CES3 -NET
Pulse Trains			-LC1 -TCES1 -CES8
Class I Train (50/55) (TON/TOFF)

The references indicated are:

¹Limoge et al. (1999);

²Brown (1975);

³Bystritsky et al. (2008);

⁴AMM (2013)http://www.net1device.com/specs.htm;

⁵Liss Stimulator Manual, Model No. SBL-502-B;

⁶von Richthofen and Mellor (1979);

⁷Dimitrov and Ralev (2009);

⁸Liss Stimulator Manual, Model No. SBL-501-M.

Adapted from Datta et al. (2013).