Made from a conductive material, the shield is always connected to the low impedance input of the electrometer or picoammeter or to the output LO (or common) terminal of the SMU.

• 用导电材料制成的屏蔽总是连到静电计或皮安计的低阻抗输入端，或者连到SMU的LO输出端（或公共端）。