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PXI multimeter measures from pA to kV

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article image 8V dc current ranges from 1µA to 3A and 6V ac rms current ranges from 100µA to 3A.
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NATIONAL Instruments has released the PXI-4071 FlexDMM, a multifunction device with a 7 1/2-digit (26-bit) digital multimeter and an 1.8 million samples a second isolated digitiser. It offers fast, accurate voltage measurements from ±10nV to ±1000V and resistance measurements from 10µΩ to 5GΩ.

It also uses a solid-state current shunt configuration that offers 8V dc current ranges from 1µA to 3A and 6V ac rms current ranges from 100µA to 3A. It is suitable for applications such as fuel cell testing, leakage measurements, IV curve tracing and data converter linearity testing.

It provides dc reading rates of seven samples a second at 7 1/2 digits. For higher throughputs it offers a maximum dc reading rate of 10,000 samples a second at 4 1/2 digits, five times faster than traditional GPIB-controlled DMMs. In isolated digitiser mode it can acquire dc-coupled waveforms in all voltage and current ranges with a 1.8 million samples a second 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 23 bits. Engineers can analyse transients, fly-back 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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