To obtain the voltage of a DUT using one open circuit voltage (OCV) test, run OCV Test.vi.

Equipment

  • PXIe-4081 or PXI-4071
  1. Use the NI Example Finder to open OCV Test.vi.
    1. In the LabVIEW window, select Help » Find Examples.
      The NI Example Finder window loads.
    2. Select Toolkits and Modules » Battery Cell Quality » OCV Test.vi.
      The front panel of the VI loads.
  2. On the front panel of the VI, select the DMM resource from the Instrument Descriptor control.
    Note NI supports the PXIe-4081 or PXI-4071 DMMs.
  3. Optional: If you want the DMM to perform self-calibration, enable self-calibration on the front panel.
  4. Configure the OCV Test Parameters.
    1. Select a voltage Range.
      Select 10 V DC or 1000 V DC depending on which voltage range is compatible with your DUT.
    2. Select an Aperture Time (PLCs).
      The aperture time is related to power line cycles (PLCs) of the DMM. Higher PLCs increase the measurement quality. However, higher PLCs also increase the test time.
    3. Select the Number of Averages.
      The Number of Averages is the number of data points that are averaged in the test result. Higher Number of Averages increase the measurement quality. However, higher Number of Averages also increase the test time.
    4. Select the Powerline Frequency.
    5. Select whether the DMM performs ADC Calibration.
      Choice Description
      On The DMM performs analog-to-digital converter (ADC) calibration.
      Off The DMM does not perform ADC calibration.
      ADC calibration is separate from self-calibration.
  5. Click Run.
After running the VI, view the OCV result (in volts) on the front panel. You can also view the reading time (in seconds) of the test.