Does NI DSA Hardware Support Single Point Acquisition?

Updated Mar 14, 2019

Reported In

Hardware

  • PXI-4461
  • PXI-4462
  • PXIe-4464
  • PXIe-4499
  • PXI-4498
  • PXIe-4497
  • PXI-4496
  • PXIe-4496
  • PXI-4495
  • PXIe-4480
  • PXIe-4481

Issue Details

Is it possible to run single point acquisition or generation with NI Dynamic Signal Acquisition (DSA) hardware?

Solution

DSA modules are not designed to support single point (either on-demand or hardware-timed) acquisition or generation.

If you select On Demand (single point software-timed) timing for DSA hardware, NI-DAQmx may throw Error -200077: Requested value is not a supported value for this property. The property value may be invalid because it conflicts with another property. Some DSA modules will not throw an error, and instead will return a single sample from an acquisition running at the maximum supported sample rate of the module.

If hardware timed single-point timing is selected, NI-DAQmx will throw Error -200077 as seen above.

Additional Information

DSA modules are designed for dynamic signal collection, often for analysis in the frequency domain. The delta-sigma ADCs and high-performance anti-aliasing filters found on DSA cards are optimized to collect continuous signals with low-noise for high-bandwidth data.

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