Sampling Rates using USB-600x with Raspberry Pi

[Mico_GAiTE]

Hello,

My apologies if this has been posted in the wrong section. I'm interested in connecting a Raspberry Pi to what will probably be a USB-6002. The max sampling rate on the 6002 is 50 kS/s, but I have heard of issues when trying to achieve sampling rates this high with a Raspberry Pi. Any insight into achieving the maximum sampling rate possible, and what that sampling rate is, would be greatly appreciated. I will likely be using a Raspberry Pi 3 Model B. Any recommendations for similarly priced hardware is also appreciated. This will be used to take vibration measurements from ICP acceleromters (purchasing other hardware for signal conditioning), and I'm interseted in ~ 10 kHz bandwidth.

Thanks,

Mico

[BennyBenson]

Hi Mico,

Are you looking to achieve max sampling with the USB-6002, or what sampling are you actually trying to achieve? 

Also, another forum that you may want to look at that typically has more info on using raspberry pi and arduino is the LabVIEW Maker Hub. https://www.labviewmakerhub.com/forums

[Mico_W]

Hi BennyBenson,

Thanks for your response. I would ideally like to achieve 10 kHz "simultaneously" on all 4 channels, going higher if possible. If I could achieve the maximum sampling rate of the USB-6002, that would be wonderful. Otherwise I might look at a similar product with a lower sampling rate. Thanks for your forum link, I'll check that out.

Mico

[Hatef.fouladi]

https://www.ni.com/en-us/shop/model/usb-6002.html
based on this link it is 50k/s card so for 4 ch you could get 12 khz per ch(do not forget nyquist)
a;so you use 6009 with 48k but 14 bit resolution

[Mico_GAiTE]

Hi Hatef,

Thanks for your reply. Do you know if the Raspberry Pi can keep up with the 12 kHz per channel? I have read elswhere that it can struggle to handle this amount of load, and am not sure how to check myself without testing. Essentially I am looking to make sure that the Raspberry Pi is capable of reading data that is streamed from the DAQ at those speeds. Typically I do not hear of the RPi being used for this high of a sampling rate.