The SourceMeter instrument is very similar to the source-measure unit in many ways, including its ability to source and measure both current and voltage and to perform sweeps.
在很多方面数字源表仪器与源-测量单元是类似的，包括电流和电压源，电流和电压测量以及扫描等性能。
The typical SourceMeter instrument doesn't have as high an input impedance or as low a current capability as a source-measure unit.
典型的数字源表不像源-测量单元那样具有极高输入电阻或极低的弱电流测量能力。
The Source-Measure Unit can also test other diode parameters, including forward voltage drop and breakdown voltage.
源-测量单元还可以测量其它的二极管参数，包括正向电压降和击穿电压。
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