Since each of the conductors in a data cable travels through the same physical space, it is reasonable to expect transients caused by environmental or current switching to be “common mode” that is, present on all data and ground conductors within the data
Since each of the conductors in a data cable travels through the same physical space, it is reasonable to expect transients caused by environmental or current switching to be “common mode” that is, present on all data and ground conductors within the data
因数据电缆中的每个导体所通过的物理空间是一样的，期望由于环境或电源通断引起的瞬态电压同时出现在数据电缆里的所有的数据线和地线，成为“共模”电压是合理的。