NI 6.5-digit multimeter reads at 100Sa/s
Keywords:national instruments? pxi 4070? flexdmm? digital multimeter? data acquisition card?
Suited for automated tests on production floors and in an R&D environment, the device can also read 5.5 digits at 2kSa/s, 4.5 digits at 50kSa/s, and 3 digits at 1.8MSa/s. By using the company's LabVIEW and NI-DMM driver software, engineers can further read 7 digits at 5Sa/s.
The FlexDMM device delivers a basic 24h Vdc accuracy of 6ppm and sub 5V sensitivity. It incorporates a 1.8MSa/s isolated digitizer that enables the device to acquire both ac- and dc-coupled waveforms up to 1300V input at a maximum sampling rate of 1.8MSs/s.
By combining the NI LabVIEW software with the isolated digitizer mode, the FlexDMM can analyze transients, flyback signals, or other nonrepetitive high-voltage ac waveforms in both the time and frequency domain.
The PXI-4070 uses a digital algorithm that automatically rejects the dc component of the signal, making it possible to offer a dc-coupled ac voltage mode that completely bypasses the slow-settling input coupling capacitor required with traditional methods.
The company claims that the device's PXI platform combines the PCI bus with integrated timing and triggering to deliver >10x performance improvement compared to older architectures. |
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