The basic principles still apply: ground impedance must be as low as possible, high level and low level signals must be separated so that they do not interfere with each other, and capacitance and mutual inductance coupling must be avoided.

• 前文提到的原理仍然适用：地线阻抗要尽量小，大功率信号和微弱信号要分开布置以避免串扰，一定要避免电容性耦合和电场耦合。