Configuring Period Measurements

Configuring Period Measurements

For the NI 4070/4071/4072 only, configure a period measurement by completing the following steps:

Note  If you specify Auto Range (-1.0) for the period range, the DMM defaults to a 2 second aperture time.

• LabVIEW
  1. Use niDMM Config Measurement.
  2. Set Measurement Function to Period.
  3. Set Range to the maximum expected period in seconds. The DMM uses the range to calculate the aperture time.
  4. Use niDMM Configure Frequency Voltage Range.
  5. Set Frequency Voltage Range to the AC V range of your input signal.
• CVI/C++/Visual Basic
  1. Use niDMM_ConfigureMeasurementDigits.
  2. Set Measurement Function to NIDMM_VAL_PERIOD.
  3. Set Range to the maximum expected period in seconds. The DMM uses the range to calculate the aperture time.
  4. Use niDMM_ConfigureFrequencyVoltageRange
  5. Set Frequency Voltage Range to the AC V range of your input signal.