Effects of Frequency Cutoff Characteristics on Spiking and Ringing of TV Signals

The spiking and ringing of TV signals depend upon amplitude and delay characteristics associated with frequency cutoff of transmission. The effects of a variety of cutoff characteristics of both ideal and practical systems on rectangular and sine-squared pulses are illustrated by computed waveforms. The illustrations are arranged to show a) waveform of input pulse, b) amplitude and delay characteristics of transmission path, and c) waveform of output pulse. Included here is a discussion of inferences that can be drawn from certain output wavesforms on the reductions in transient response that are achieved by inband delay equalization and amplitude roll-off.