Main siteMain site  ForumForum  ForumSearch  Private messageEmail contact  RegisterRegister  Log inLog in 
Topic: High Sampling Rates 2K sps or above!
Reply to topic
Author Message
angel61606



Joined: Jul 8, 2020
Posts: 85

PostPosted: Jun 7, 2022 4:37 AM    Post subject: High Sampling Rates 2K sps or above!

Hi Jarck!

I am have a data acquisition device which can send data with 2 different sampling rate, one 250 sps , and the other one is 2K sps.
Therefore I have made different designs for each sampling rates. They are different just in terms of the sampling rate for elements. The signals are fine and flawless, when the sampling rate is 250. however, when I change sampling rate to 2000 sps I see random noises in my signals. they got repeated. even if nothing is connected to my device, those noises happen from time to time. The noises have a similar shape, the shape of the noises are like sudden movements of muscles in emg, i can send you the pictures. I wonder if this problem is because bioera cannot support high sampling rates or not?


please not that, the designs for each sampling rate are separated , i mean the filters and the data importer and every element are set to the proper sampling rates.
jarek



Joined: Oct 22, 2007
Posts: 960

PostPosted: Jun 7, 2022 7:57 AM    Post subject:

BioEra can definitely handle 2k sample rate. It makes no difference as long as the computer is fast enough. There is nothing in BioEra to prefer any rate, it is just a matter of doing everything more often.

Random noise in the signal could simply come from the device.
angel61606



Joined: Jul 8, 2020
Posts: 85

PostPosted: Jun 11, 2022 9:57 AM    Post subject:

We were using usb protocol to transfer data, apparently it has problem with high sampling rates. so in order to solve this problem we multiplied the packet data size and then we reduced our sampling rate. apparently this is common solution to handle such troubles.
Reply to topic