Overview: How do you tell if the anti-aliasing filter (AAF) used with your data acquisition system is correct for your application? Most manufacturers do not clearly specify the filters, let alone provide performance characteristics of the AAF. This article provides quick and easy tests to verify the performance characteristics of these filters.

The article:

1. Overviews common filter designs.
2. Details the performance characteristics of common filters.
3. Describes test setup and procedure for discovering what type of filter is in your system.

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