NI-DAQmx Shows Incorrect Waveform dt and t0 Information

Issue Details

• I am reading analog data from a cDAQ in LabVIEW, but the waveform dt and t0 characteristics always show the default value. What causes this?
• When I view NI-DAQmx waveform data in LabVIEW, dt is always 1.000000 and t0 is always 00:00:00 PM MM/DD/YYYY. How can I fix this?
• When acquiring data from a voltage input C Series Module in LabVIEW, the waveform data appears like the below image.

Solution

1. Incorrect LabVIEW code.
2. Corrupt NI-DAQmx.
3. Corrupt NI Measurement & Automation Explorer (MAX).

1. Ensure that the LabVIEW code does not initialize the waveform data with default values.
   • LabVIEW will automatically use a default dt of 1.000000 and t0 of 00:00:00 PM MM/DD/YYYY. Instead of initializing the array with a default element, ensure that the waveform array starts empty and is only populated with data from the DAQmx Read VI.
2. It may be that the NI-DAQmx installation is corrupt. Using NI Package Manager, repair NI-DAQmx.
   • Refer to Installing, Updating, Repairing, and Removing NI Software for instructions.
3. If the above steps do not resolve the issue, repair NI MAX using NI Package Manager.

Additional Information