Because of the low test current level used, a very sensitive voltmeter is required to measure the voltage drop, which is usually in the microvolt range.
由于所使用的测试电流很低，所以就需要非常灵敏的电压表来测量这种通常在微伏范围的电压降。
2
The offset voltage will cause an error in the applied stimulus to a device under test or the value measured by the voltmeter.
偏移电压会导致施加到被测装置的激励发生误差，或者使伏特计的测量值发生误差。
3
Test points can included to accommodate voltmeter or oscilloscope probes.