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Industry’s first PXI express DMM for more accurate, smarter test systems

National Instruments (NI) has released the NI PXIe-4081 7½-digit high-performance Digital Multimeter (DMM) and 1.8MS/s isolated digitiser. The NI PXIe-4081 is said to offer engineers the flexibility, resolution and isolation needed to tackle challenging applications that require smarter test systems in industries ranging from consumer electronics to aerospace and defence.

The NI PXIe-4081 is claimed to be the industry’s most accurate 7½-digit DMM, with an accuracy of 15ppm for DC voltage measurements up to two years after calibration.

A solid-state current shunt configuration offers eight DC current ranges from 1µA to 3A and six AC rms current ranges from 100µA to 3A. The DMM occupies a single 3U PXI slot and provides excellent channel density for high-channel-count systems, delivering 17 DMM channels in a single PXI chassis occupying 4U of rack space.

For high-throughput applications, the isolated digitiser mode can acquire DC-coupled waveforms in all voltage and current ranges with a 1.8MS/s maximum sample rate. By changing the digitiser sampling rate, engineers can vary the resolution of the digitiser from 10 to 23 bits for a combination of speed and accuracy.

Engineers can use an interactive soft front panel for basic measurements and debugging automated applications. The driver software includes a best-in-class programming interface that works with a variety of development environments, such as C, Microsoft .NET and LabVIEW. The driver also features help files, documentation and 28 ready-to-run example programs to assist in test code development.

Author
Tom Austin-Morgan

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