Any external shunt resistance across the voltage source will attenuate the measured voltage, as shown in Figure 2-3.

跨接在电压源上的任何外部分流电阻都会使测量的电压衰减，如图2 - 3所示。

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Although input bias current is a common source of this type of error, currents generated by external circuits can also result in errors due to voltage drops across the source resistance.

虽然输入偏置电流是这种误差的常见来源，但是外电路产生的电流在源电阻上形成的电压降也能引起误差。

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However, the utility source for a plant may contain additional harmonic voltage distortion arising from external sources.

然而，对工厂实用电源可能包括由外部电源引起的额外的谐波电压畸变量。

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