Can I Get the Full Sampling Rate of 51.2 KS/s if I use NI 9234 with a CRIO in Scan Mode?

Updated Feb 13, 2018

Reported In

Hardware

  • cRIO-9064
  • NI-9234

Software

  • LabVIEW 2017 Full
  • LabVIEW Real-Time Module
  • LabVIEW FPGA Module

Issue Details

I am using my NI 9234 with a CRIO in scan mode and would like to understand if I can achieve a sampling rate of 51.2 KS/s.

Solution

NI SCAN Engine feature allows users to directly communicate with C series modules without the need of FPGA programming. When you are operating a CRIO in SCAN mode, a pre-built FPGA code is deployed onto the CRIO which allows the user to bypass FPGA programming. The data points which are sampled by a c series modules are transferred to a lookup table on the controller at a max. rate of 1000 Hz under ideal conditions. Effectively, you can attain sampling rates of a maximum of 1Khz under ideal conditions. We strongly recommend using sampling rates around 500 Hz in scan mode. Please ref. to the related links section to understand more about Using NI CompactRIO Scan Mode and NI Scan Engine Performance Benchmarks.

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