System Reponse and Stability

Definition:

The system response is the output of the electronic system when excited with valid signal input. Response can be in a gain, frequency response, phase response, distortion.

    • Step response
      • The time domain system output response due a sudden low to high input signal.
    • Impulse response
      • The time domain system output response due a a short duration and large amplitude impulse input signal.

Explanation Both Step and Impulse signal in frequency domain contains wide spectral content over a large spread of bandwidth. It is often to used to evaluate the system response stability such as overshoot, understood, ringing, etc. with one test. This simulates real world condition where sudden changes of current load are common.