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Keithley introduces its model 2182A nanovoltmeter, which is suitable for making low noise measurements in research, metrology, nanotechnology, superconductivity, and other low voltage/resistance applications. The device can be used with the company's models 6220 DC current source and 6221 AC/DC current source; users are able to make resistance measurements, pulsed I-V measurements, and differential conductance measurements quickly. The instrument is able to make 15 nV peak-to-peak measurements at one-second response times and 40 to 50 nV p-p measurements at 60 millisecond times. The unit features a built-in Delta Mode to coordinate measurements with a reversing current source (one-button operation when used with Keithley models 6220/6221) at up to 24 Hz with 3 nVrms/root-Hz noise, creating a system for measurements of low resistance materials or devices. The new delta mode operation alternates nearly three times faster than its predecessor model, reducing measurement noise by nearly a factor of two. In addition, the new delta mode incorporates a new cancellation method that reduces the effects due to changing thermoelectric voltages by a factor of ten compared to its predecessor.

Keithley Instruments, Inc.

Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, OH, 44139