NI 9234 digital filter

[akash90]

Hello 🙂

I'm using NI 9234 to acquire a vibration signal. I read the datasheet of this module and on page 5, it says that "The NI 9234 uses a combination of analog and digital filtering to provide an accurate representation of in-band signals and reject out-of-band signals."

However I didn't find a mention anywhere of the details of the filter (for example the type, order, etc.). Does anyone have an idea about this?

Thanks 🙂

[Christoph_D]

Hi,

I couldn't find more official information about the filtering specifics. I guess the analog filter is a simple low pass to limit the higher frequeency components and the digital filter should be a multi-stage FIR as common in Delta-Sigma-ADCs.

I hope that helps a little bit.

Best regards,
Christoph