JITTER GENERATION DEVICE, DEVICE TEST SYSTEM USING THE SAME, AND JITTER GENERATION METHOD

摘要

Provided is a jitter generation device having a configuration for applying a phase modulation to a phase synchronization loop. The jitter generation device includes: a first and a second level control unit for performing level control of a first modulation signal so as to be applied to a jitter addition unit of the phase synchronization loop and a dividing ratio variation means; a parameter setting unit which sets a parameter associated with a desired jitter; an orthogonal modulator; a switching unit; and a control unit. When the switching unit is switched to a first state, the control unit controls the first and the second level control unit so that a local signal obtained by adding the desired jitter to the output signal of the phase synchronization loop can pass through the orthogonal modulator. When the switching unit is switched to a second state, the control unit controls the first and the second level control unit so that orthogonal modulation is applied to a non-modulated local signal obtained without adding the desired jitter to the output signal and inputted to the orthogonal modulator according to the second modulation signal for output.