AUTOMATIC EQUALIZER UTILIZING A PREDETERMINED REFERENCE SIGNAL

摘要

An equalizer of a coaxial transmission system is automatically adjusted by applying a sweep signal to the equalizer and comparing the output of the equalizer with a predetermined reference signal to develop an error signal. The output signal of the equalizer is simultaneously converted into a train of pulses and applied to a frequency selector which generates signals upon the occurrence of predetermined frequencies in the equalizer output signal. In response to these generated signals, predetermined intervals of the error signal are integrated, converted to digital signals, and applied to the proper "memory" of the equalizer.