Keithley 2450 SourceMeter
The Model 2450 Interactive SourceMeter instrument is a precise, low-noise instrument that combines a stable DC power supply, true current source, electronic load, and a high-impedance multimeter. The design of this instrument features intuitive setup and control, enhanced signal quality and range, and better resistivity and resistance capabilities than similar products on the market. With 0.012 percent basic accuracy at 6½-digit resolution, the Model 2450 delivers 59 readings per second over the IEEE-488 bus. At 4½-digit resolution, it can read up to 3000 readings per second into its internal buffer.