Noise in measurement of analogue voltage signal using NI USB 6351

[MechatronicsEngineer]

I need a design of low pass filter that prevents the noise caused by the USB 6531 Data Aqcuisition device when it is measuring analogue voltage signal . The device gives a huge noise when even not connecting any input if any one have any advice or schematic to a circuit that can help I will be really grateful

[Joe_S]

Hello,

If you are seeing low-frequency noise in your measurements, then you will want to determine the frequency of the noise and design a low-pass filter that will remove that noise.  We have a Knowledgebase article about it here.  Also, you may want to read this tutorial to verify your signals are properly connected.  Hope this helps!

Regards,

Joe S.