The Model 2634B SourceMeter® SMU instrument is a new dual-channel SMU instrument with best-in-class value and performance. Its tightly-integrated, four-quadrant design allows it to simultaneously source and measure both voltage and current to boost productivity in R&D and bench-top applications. The wide range of 1.5A DC, 10A pulse, 200V output and 1fA measurement resolution makes it suitable to test a wide range of lower current devices and materials. The Model 2634B is equipped with Keithley's high speed TSP® technology, which is over 190% faster than traditional PC-to-instrument communication techniques. The Model 2634B is designed for bench-top applications and, therefore, does not have the high-end, system-level automation features of the Model 2636B SourceMeter SMU Instrument that includes digital I/O, TSP®-Link technology, and contact check function.