A pulse signal generator includes a period setting unit that receives a period set signal including an information indicative of a pulse period, and that outputs a period control signal controlling the pulse period, a duty ratio setting unit that receives a duty ratio set signal including an information indicative of a duty ratio of a pulse, that receives a signal including the pulse period set in the period setting unit, and that generates a duty ratio control signal controlling the duty ratio of the pulse on a basis of the pulse period and the duty ratio set signal, and a pulse generation unit that generates a pulse signal including the pulse period and the duty ratio of the pulse on a basis of the period control signal and the duty ratio control signal.