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Founded in 1975, Precision Filters, Inc. is a manufacturer and global distributor of high performance instrumentation for test measurements.

Precision Filters Releases New Guide to Understanding Filter Specification Sheets

Analog filters are a critical component in all of PFI’s signal conditioning products. When properly implemented, an analog filter can separate a desired signal from noise and ensure adequate alias protection for sampling and A/D conversion.

Choosing the right filter for a particular application requires an understanding of filter response characteristics, which are derived from the mathematical relationship between input and output that forms the basis for filter design.

In the new white paper “Guide to Understanding Filter Specification Sheets”, Precision Filters explains the analysis behind PFI’s filter specification sheets, which summarize the response characteristics of their proprietary line of FLAT and PULSE designs.

Download the paper today to learn more about:

Filter transfer functions

Filter classes and prototypes

Amplitude and phase responses

Phase delay vs. group delay

Phase distortion and waveform reproduction

Step response in the time domain

Alias attenuation

Band-pass filter construction

From the laboratory to the test cell, Precision Filters’ programmable filter/amplifier system line-up has you covered. Choose from the high-density modular 28000 system that packs up to 128 channels of anti-alias filter/amps in a single chassis, the convenient 16-channel PF-1U rack mount filter/amplifier system, or the compact PFA-2 two-channel desktop unit. We even offer a pair of programmable filter modules for NI’s™ popular cDAQ™ and cRIO™ format.


We work closely with customers to provide innovative product solutions for today’s measurement challenges.

To learn more about how Precision Filters’ programmable filter/amplifier systems can provide the performance and flexibility you need to manage your test measurements, please visit our web site at http://www.pfinc.com or contact Precision Filters, Inc. at 607-277-3550 or by email at sales@pfinc.com.

™ National Instruments, NI, CompactRIO, and CompactDAQ are trademarks of the National Instruments Corporation.