如果通过传输线将脉宽和脉幅调制方式同时用于数字多路传输,将使简单的数字系统的数据处理能力加倍。更确切地说,一条电缆的单一信道可以扩展为两个信道,使传送的数据速率等于原来的比特率的两倍。这样一种双轴调制器电路较采用独立电缆的调制电路经济得多,可用于发射机—接收机的 If the pulse width and pulse width modulation are simultaneously used for digital multiplexing over the transmission line, the data processing capability of a simple digital system will be doubled. More specifically, a single channel of a cable can be extended to two channels so that the data rate transmitted is equal to twice the original bit rate. Such a biaxial modulator circuit is much more economical than a modulation circuit using an independent cable and can be used for transmitter-receiver