利用连接到电路中一个低阻点的导体，将信号通路包裹起来，即实现了静电屏蔽，该低阻点最好是测量设备的LO输入端子。
Electrostatic shielding is provided by surrounding the signal path with a conductor connected to a low impedance point in the circuit, preferably the lo input terminal of the measuring device.
由于错误的读数可能由直流或交流静电场引起，所以静电屏蔽有助于尽量降低这种电场的影响。
The erroneous readings may be due to either DC or AC electrostatic fields, so electrostatic shielding will help minimize the effects of these fields.
限幅的波形表明需要改进静电屏蔽。
A clipped waveform indicates a need to improve electrostatic shielding.
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