National Instruments 778274-01

Part Number: 778274-01

The National Instruments 778274-01 PXI Digital Multimeter, also known as the PXI-4070, is an advanced measurement device that provides exceptional performance for both AC and DC systems. This versatile multimeter delivers high-resolution measurements coupled with high-speed digitization, making it ideal for rigorous test applications. The device supports a rapid function change speed of 100 updates per second for DC measurements, alongside an impressive auto range time of 5 ms for both DC current and voltage. Its auto range for resistance takes only 50 ms, and it features a remarkably low trigger latency of 2 μs, achieving a maximum trigger rate of 6 kHz for DC measurements.

For AC signals, the PXI-4070 operates with a function change speed of 10 updates per second; its AC auto range time is set at 250 ms for both AC current and voltage, while maintaining the same 2 μs trigger latency observed in DC mode. The instrument supports dual acquisition functions: voltage and current, with the voltage function covering both DC and AC ranges from ±100 mV to ±300 V, and the current function ranging from ±20 mA to ±1 A. A notable feature is the 25 ppm timebase accuracy, ensuring reliable, precise measurements.

The self-calibration capability significantly enhances user convenience by calibrating the multimeter against high-precision internal standards, allowing for extended intervals of external calibration approximately every two years. Physically, the PXI-4070 measures 2.0 cm × 13.0 cm × 21.6 cm (0.8 in. × 5.1 in. × 8.5 in.) and weighs only 340 g (12 oz), underscoring its compact design and functionality. This model is backed by a three-year warranty, reflecting National Instruments' commitment to quality and performance.