DSP与PC机的通讯以RS-485为基础，分析了RS-485总线在组网过程中因地线的不正确连接引发的共模干扰和EMI问题，并提出了解决方法。
The problem in the communication between DSP and PC based on RS-485 is presented, and the solution of common-mode disturbance and EMI which are generated by incorrect ground connection is stated.
DSP与PC机的通讯以RS-485为基础，分析了RS-485总线在组网过程中因地线的不正确连接引发的共模干扰和EMI问题，并提出了解决方法。
The problem in the communication between DSP and PC based on RS-485 is presented, and the solution of common-mode disturbance and EMI which are generated by incorrect ground connection is stated.
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