Chapter 9 Communications Circuits a repeater regenerates the input signal so that its output is clean and free of distortion and noise. Digital Signal Leaving source Source After Transmission Showing Attenuation Regenerated and Distortion Signal repeater Figure 9-4 Regeneration of a digital signal www.gxmu.edu.cnFigure 9-4 Regeneration of a digital signal. A repeater regenerates the input signal so that its output is clean and free of distortion and noise. www.gxmu.edu.cn Chapter 9 Communications Circuits