Sampling runs CPU at 100%

I use a NI 4472 DSA and have a minor problem when executing the example the spectrum analyzer code. Pegs the CPU to 100% when I taste > 25 k. y at - it a known solution for this problem?

Hi talltubatom,

The behavior you're seeing is the nature of the DAQmx driver. Ce KB explains this behavior for 7.4 of DAQmx and superior.  If you are looking to reduce the use of CPU, you can use the mode 'waiting', otherwise, if you use 'return', you will still see high CPU usage, but if you need other programs to run, they will see the necessary CPU.  Let me know if you have any other questions on this, have a great day!

Tags: NI Software

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