Differential mode interference:Also known as series mode interference,it is the interference between the series and the signal source loop.It is connected in series in the signal source loop,and added to the measured signal and then input to the system.The factors that produce differential mode interference mainly include electrostatic coupling of distributed capacitance,magnetic field coupling in space,mutual inductance of long-line transmission,50HZ power frequency interference,and parameter changes of components in the signal loop.
差模干扰：也称串模干扰，就是串联与信号源回路之中的干扰。它串联在信号源回路中，与被测信号相加后输入系统。产生差模干扰的因素主要有分布电容的静电耦合、空间的磁场耦合、长线传输的互感、50HZ的工频干扰，以及信号回路中元件的参数变化等。
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