Solution
The sampling rate limitations of a cRIO-based system are determined by the following characteristics:
- Sample rate specification for your specific C Series Modules.
- Maximum sample rate specification for your specific cRIO controller.
Therefore, kindly see the specifications pages of your C Series Modules. For the cRIO controller, you can check the "Real-Time (NI-DAQmx) Mode" section on your cRIO's specifications page.
Other than that, kindly see
Timing Considerations for C Series Devices.
In your LabVIEW VI, you would use the
DAQmx Timing VI to configure your sample rates.
Data is streamed to the buffer on your cRIO's Real-Time Operating System and pulled off of the buffer with the
DAQmx Read function. Consult
this article for more information on timing and buffers.
Specifically for
Hardware Timed Single Point acquisition (continuous streaming without a buffer), the update rate is 5 kHz, as noted in this
white paper. So it is possible to acquire the data at 5kHz.
However by pulling more than 1 sample in per DAQmx read, you can increase the overall acquisition rate. For example, reading 10 samples per DAQmx read, at a rate of 5 kHz, gives an overall rate of 50 kHz.