incorrect electrical connection 错误的电连接
incorrect crimp connection 装配不良
incorrect water piping connection 不正确的水管连接
At present, some of the field calibrator has little incorrect connection judging function, for the electric energy metering devices running state detection work is far from sufficient.
目前一些现场校验仪具有少量错误接线判断的功能，对于电能计量装置运行状态检测工作来说是远远不够的。
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。
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