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Keysight Technologies
Making Low Resistance Measurements using the B2961A and 34420A
B2961A/B2962A 6.5 digit Low Noise Power Source

Using a Precision Current Source with a Nano Voltmeter
Resistance measurement is one of the most common tests performed to characterize the properties of electrical devices. However, certain
types of resistance measurements require a very precise, lowlevel current source to prevent device self-heating or device damage dur-
ing testing. In general, accuracy improves with the magnitude of the voltage or current being measured. Therefore, for devices with low
resistance values (such as superconductors, Carbon Nano Tubes (CNTs), etc.) it is important to keep the measurement voltage as large as
possible. The Keysight Technologies, Inc. B2961A 6.5 digit Low Noise Power Source satisies these measurement requirements when used
in combination with the Keysight 34420A 7