Method and apparatus for simultaneously displaying distribution patterns of equalized output signals from multiple channels

摘要

An eye pattern display device for receiving and equalizing signals transmitted on a frequency-division multiplex basis to produce equalized output signals and displaying eye patterns of the equalized output signals is intended to check the eye patterns of the equalized output signals on multiple channels simultaneously. Level converters convert the signal levels of the equalized output signals output from channel demodulators. Offset adders add predetermined offset signals to level-converted equalized output signals so that they can be displayed on corresponding display areas of a display which are allocated to the respective channels. A selector selects output signals of the offset adders in sequence to display the eye patterns of the equalized output signals simultaneously on the display.