X90 mobile modules
X90 mobile system User's manual V 1.20 - Translation of the original manual
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Adding sinusoidal oscillations to generate a signal
The following figures show how a square wave signal is created by overlapping sinusoidal oscillations.
Sinusoidal oscillation with 1 Hz and an amplitude of 1.
Time [s]
Amplitude
Base frequency (GF)
3 x GF
5 x GF
7 x GF
9 x GF
Total
Figure 73: Pure sinusoidal oscillation
Sinusoidal oscillation with 1 Hz and an amplitude of 1 and sinusoidal oscillation with 3x the base frequency, i.e.
3 Hz and a lower amplitude.
Time [s]
Amplitude
Base frequency (GF)
3 x GF
5 x GF
7 x GF
9 x GF
Total
Figure 74: Sinusoidal oscillation with one harmonic