Hello,
Fundamentally I think you have two choices: hardware and software. For hardware you'll be defining the filter circuit which will precede your acquisition. Acquisition related questions with DAQ products will be better fielded in the Data Acquisition forum. For software filtering, there are examples in the Example Finder (Help -> Find Examples...) to help you get started. How fast you are acquiring data will in part determine whether or not your code will be able to keep up to give you the "real-time" filtering you seem to be looking for.
Best Regards,
JLS
