frequency of signal from anemometer

[GerdW]

Hi levla,

you don't need to attach your files for each participant again, we can all read other peoples posts! 😉

[levla]

Hi,

can you offered me another solution? thank you for the comment

[GerdW]

Increase ScanEngine sample rate or use the FPGA in your cRIO!

[levla]

hi,

where do I increase the sampling rate scan engine? what value do you think I have to. I'm not a professionnal in labview.
thank you for helping me

[GerdW]

I got rid of the ScanEngine for a long time now and only use the FPGA interface.

So I cannot check the parameters you have to set. I suggest to read the help and the tutorials for the ScanEngine offered by NI.com…

[levla]

Hi,

I found that increasing the sample rate scan engine but it did not change my program. I'd like to do in FPGA, how I should proceed in the knowledge that I've ever handled the labview FPGA ? Can you show me an example of code that I can apply to my situation?

thanks

[BruceAmmons]

The scan engine should be okay for this application.  I would run the scan engine at 500 Hz.  Put a for loop around the AI2 read and a 2 msec wait to get maybe 250 samples at 500 Hz.  This will give you an array of data instead of a single point at a time.  Wire that array into your waveform and analyze it.

There are better ways to do it, but this should work.  It should give you results twice per second.

Bruce