Patent ID: 7013243

Claim:
A multiplexed signal quality display system for measuring the quality of a multiplexed signal issued from a communication device wherein a band width to be used and the number of communication channels capable of being accommodated are determined by a diffusion code length, the number of communication channels and channels to be used, which are determined by a diffusion code length, are decided in terms of a diffusion code number affixed to the type of the diffusion code, to effect communication while ensuring multi-channel communication lines in one and same band, said system comprising: a memory means for storing measurement results obtained by measuring electric powers of signals present in all of the channels within the band used; and a display means which specifies a channel where the presence of a signal is predicted and reads and displays a measured value in the specified channel; wherein said memory means stores an electric power of a signal and a noise component power of the signal, and said display means displays a graph having a length proportional to the values of said electric power of the signal and a graph having a length proportional to the value of said noise component power of the signal in such a manner that in a longitudinal direction of one of said graphs there is disposed the other graph.