Thanks! CaptainBlack , can you tell me how did you get this. My only clue how to read this picture is that arcsin(a/b) is phase angle between x and y.
Its the Lissajous figure you get when you apply a sin wave to the x input and another sine wave (different amplitude and phase but same frequency) to the y input. The amplitude of the x-wave is the maximum x value that the figure achives, and of the y-wave is the maximum y value.