Top accuracy claims for PXI-based DMM

The PXI-4071 FlexDMM is a multifunction device that features a 7.5-digit (26bit) digital multimeter and an 1.8Msample/s isolated digitiser.

Engineers can now accurately measure from picoamps to kilovolts with the new National Instruments PXI-4071 FlexDMM - a multifunction device that features a 7.5-digit (26bit) digital multimeter and an 1.8Msample/s isolated digitiser.

The NI PXI-4071 FlexDMM offers fast, accurate voltage measurements from +/-10nV to +/-1000V and resistance measurements from 10uohm to 5Gohm.

It also uses a solid-state current shunt configuration that offers eight DC ranges from 1uA to 3A and six AC RMS ranges from 100uA to 3A.

This capability gives engineers the flexibility, resolution, functionality and isolation required for challenging applications such as fuel cell testing, leakage measurements, IV curve tracing and data convertor linearity testing.

The FlexDMM is claimed to be the most accurate DMM available for PXI with DC reading rates of 7sample/s at 7.5 digits.

For higher throughput needs, the FlexDMM offers a maximum DC reading rate of 10Ksample/s at 4.5 digits - five times faster than traditional GPIB-controlled DMMs.

In isolated digitiser mode, the FlexDMM can acquire DC-coupled waveforms in all voltage and current ranges with a 1.8Msample/s maximum sample rate.

With the built-in isolation, engineers can measure differential waveforms up to 500V common-mode voltage such as fuel cell stack testing.

By changing the digitiser sampling rate, engineers can vary the resolution of the digitiser from 10 to 23bit.

Engineers can analyse transients, flyback signals or other aperiodic high-voltage AC waveforms in both the time and frequency domains using the NI LabView graphical development environment with the FlexDMM in isolated digitiser mode.

Engineers can quickly increase the channel count of their FlexDMM systems by integrating them with NI switch modules such as the NI PXI-2532 512-crosspoint high-density matrix.

Engineers using the FlexDMM with NI switch modules and NI Switch Executive switch management software can measure thousands of channels with a single multimeter.

The NI PXI-4071 FlexDMM includes NI-DMM driver software for NI LabView and LabWindows/CVI, and Microsoft Visual Studio.NET.

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