Use an adapter to connect the BNC connector to the triax input of the electrometer.
用一个适配器把BNC连接器连到静电计的三同轴输入端。
If the card has triax or BNC connections, cap each input channel.
如果开关卡具有同轴三线或BNC连接，则需要盖住每个输入通道。
With triax cable, the inner shield can be driven at guard potential in order to reduce cable leakage and minimize circuit rise times.
使用三同轴电缆时，为了减少电缆泄漏并尽量降低电路的上升时间，可以将内层屏蔽驱动到保护电位。
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