Keithley 2182A
Nanovoltmeter
Description
This Nanovoltmeter is optimized for making low noise measurements in research, metrology, nanotechnology, superconductivity, and other low voltage/resistance applications.
It brings a powerful new set of capabilities to researchers when used in conjunction with Keithley's recently introduced model 6221 AC/DC current source, users now are able to make resistance measurements, pulsed I and V measurements, and differential conductance measurements faster and more accurately than previously possible, in many cases eliminating the need for an expensive lock in amplifier or AC resistance bridge.
The combination is also useful in many nanotechnology applications because of its ability to measure resistance while dissipating very little power in the device under test (DUT).
Key Points
Make low noise measurements at high speeds, typically just 15nV pp noise at 1s response time, 40 to 50nV pp noise at 60ms
Delta mode coordinates measurements with a reversing current source at up to 24Hz with 30nVpp noise (typical) for one reading.
Averages multiple readings for greater noise reduction
Synchronization to line provides 110dB NMRR and minimizes the effect of AC common mode currents
Dual channels support measuring voltage, temperature, or the ratio of an unknown resistance to a reference resistor
Built in thermocouple linearization and cold junction compensation
Specifications
Maximum output: ±1.2V
Accuracy: ±(0.1% of output + 1mV)
Output resistance: 1kΩ ±5%
Storage environment: -40° to 70°C
Power consumption: 22VA
