Design and test engineers can now use a single modular instrument to make a wide range of dynamic measurements with the newNational Instruments’
By combining the new module with LabVIEW 7.1, they can create numerous types of instruments such as AC voltmeters, audio analysers, frequency counters, spectrum analyzers or I/Q modulation.
Unlike traditional measurement devices that have a fixed resolution for all sample rates, the NI PXI-5922 digitizer uses the NI FlexII ADC that has flexible resolution and can sample anywhere from 16 bits at 15 MS/sec to 24 bits at 500 kS/sec.
The NI FlexII ADC also incorporates patented NI methods for reducing the linearity and temperature drift errors inherent to multi-bit sigma-delta converters to achieve a large dynamic range at high sample rates. Low-level signals can be digitised without the need for external signal conditioning, such as filters and low-noise amplifiers.
The module is built on NI’s Synchronization and Memory Core (SMC) architecture for tight synchronization with other SMC-based products such as high-speed digitizers, arbitrary waveform generators and digital waveform generator/analyzers.
Engineers can use the module to create mixed-signal stimulus response measurements or to expand the number of acquisition channels up to 1,632 channels by synchronizing multiple NI PXI-5922 modules.