How works the analogo filter of the 4472?

I need understand how filter the signals the 4472 board.
Thanks

Hello!
That's a pretty broad question, the best thing to do would be to take a look at the 4472 manual on pages 3-4 through 3-9 at the following URL:
http://www.ni.com/pdf/manuals/322940c.pdf
This is an extensive explanation of how the antialiasing filters work, including several graphs of outputs.
Hope this helps!
Brian Spears
Applications Engineer
National Instruments

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