The National Instruments part number 779771-01 identifies the PCIe-4065, a PCI Express Digital Multimeter designed to meet diverse measurement needs in various industrial and laboratory environments. Recognized as the industry’s first Digital Multimeter (DMM) for PCI Express, the PCIe-4065 offers exceptional versatility for current and voltage measurements, including diode testing and resistance assessments. This instrument is particularly valued in educational settings and by original equipment manufacturers (OEMs) for its economical price point without compromising performance. The multimeter operates using the NI-DMM driver software and requires a warm-up period of 30 minutes, along with external calibration at least annually. With a maximum reading rate of 3000 samples per second at 4½ digits and a minimum of 10 samples per second at 6½ digits, the PCIe-4065 delivers high-resolution measurements of up to 22 bits. It accommodates a broad range of DC voltage and current measurements from 100 mV to 300 V and from 10 mA to 3 A, respectively, as well as AC voltage and current ranges from 200 mVrms to 300 Vrms and 10 mArms to 3 Arms. The device features robust specifications including gold-plated, low-thermal EMF solid copper input terminals and built-in measurement modes for AC/DC voltage, AC/DC current, 2- or 4-wire resistance, and diode testing. The PCIe-4065 maintains a maximum DC voltage component of 250 V and supports a resistance range of 100 Ω to 100 MΩ, making it an invaluable tool for accurate and reliable measurements in both cost-effective and advanced testing scenarios.