Gain and Phase (Gap) measurement device

The Gain and Phase (GAP) measurement device is a sophisticated device, which is used to measure the gain and phase of PWM converters and various generic circuits. The device excites the system with a sinusoidal test signal and measures both the time histories of the test signal and the response signal. It sweeps different frequency values giving the phase and amplitude response (Bode plot). For a PWM converter the GAP measurement device has the capability of injecting a sinusoidal modulated digital PWM signal and measuring the response of the return signal to give us the Bode plot. For PWM converter measurements, the proposed device has the flexibility of sampling response in either off-time, on-time or any other time sampling. The device additionally gives the flexibility to measure the response of the system by breaking the loop anywhere in the loop path.