The meter input resistance should be much higher than the source resistance.
仪表的输入电阻应当远远大于源的内阻才能满足对测量准确度的要求.
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The fundamental limit to measurement is Johnson noise in the source resistance.
对测量的基本限制是源电阻中的约翰逊噪声.
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Changing the source resistance is usually impractical for noise reduction.
为了降低噪声,改变源电阻通常是不实际的.
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In current measurements, the source resistance and the sensing resistance both contribute noise.
在电流测量中, 源电阻和取样电路电阻都会产生噪声.
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The effective source resistance includes the device under test as well as the measurement instrument.
等效源电阻包括被测设备和测量仪器两个方面.
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