The National Instruments 782431-01 is a Precision PXI Source Measure Unit, specifically designated as the PXIe-4143, featuring four channels that each support a voltage range of ±24 V. This unit is ideal for high pin count applications requiring precise voltage and current measurements in automated test and measurement environments. Each channel can source and sink currents ranging from 10 μA to 150 mA, and while the channels share a common low (LO), they are electrically isolated from earth ground, offering flexibility in various measurement configurations. With a rapid sample rate, the 782431-01 significantly reduces measurement times, facilitating efficient device characterization. Its transient response is exceptional, recovering within ±20 mV in less than 100 μs, making it well-suited for dynamic test scenarios. Additional enhancements, such as low wideband source noise and a settling time of under 100 μs, contribute to its overall performance. The device is designed for easy integration into various test setups, measuring 2.0 cm × 13.0 cm × 21.6 cm (0.8 in. × 5.1 in. × 8.5 in.) and weighing only 412 g (14.53 oz). The front panel features male 25-position D-SUB connectors, and the unit is backed by a three-year warranty, ensuring reliability and support for multiple years of operation in demanding environments.