FlexDMM

Engineers now can accurately measure from picoamps to kilovolts with the new National Instruments PXI-4071 FlexDMM – a multifunction device that features a 7½-digit (26 bits) digital multimeter and an 1.8 MS/s isolated digitizer.

The NI PXI-4071 FlexDMM offers fast, accurate voltage measurements from ±10 nV to ±1000 V and resistance measurements from 10 microohms to 5 gigaohms. It also uses a solid-state current shunt configuration that offers 8 DC current ranges from 1 µA to 3 A and 6 AC rms current ranges from 100 µA to 3 A.

The FlexDMM is claimed to be the most accurate DMM available for PXI with DC reading rates of 7 S/s at 7½ digits. For higher throughput needs, the FlexDMM offers a maximum DC reading rate of 10 kS/s at 4½ digits, five times faster than traditional GPIB-controlled DMMs.

In isolated digitizer mode, the FlexDMM can acquire DC-coupled waveforms in all voltage and current ranges with a 1.8 MS/s maximum sample rate. With the built-in isolation, engineers can measure differential waveforms up to 500 V.