Ithaca, NY. Precision Filters Inc. has announced the PFA-2 compact, rugged, and versatile dual-channel precision filter/amplifier. The PFA-2 has a low-noise, high common-mode-rejection balanced differential input with programmable AC/DC input coupling, making it suitable for conditioning static or dynamic signal inputs. Sharp, programmable 6-pole low-pass precision filters support two response characteristics, which are optimized for making time-domain (such as shock) or frequency-domain (such as antialiasing) measurements.

Gain is distributed before and after the filter, eliminating out-of-band energy such as transducer resonant peaking, which can cause nonlinearities due to clipping of the amplifier. Front-panel overload detectors alert the user to pre- and post-filter overload conditions that could otherwise be masked by the filter. The optional 2-pole high-pass filter provides programmable low-frequency roll off to attenuate sources of low-frequency noise.

“PFI is often approached by customers looking for an analog filter/amp product with the quality and performance we are known for, but in a smaller channel-count bench-top package,” said Doug Firth, company president and CEO. “With the PFA-2, customers who need only one or two channels to amplify and filter their low-level voltage signals now have an economical, general-purpose solution suitable for use in any industrial or lab application.”

The PFA-2 is programmable via its spreadsheet-style graphical user interface. The GUI controls up to eight PFA-2 units as a single system. Alternatively, you can control the PFA-2 using a high-level command interface via a USB 2.0 connection.

The PFA-2 conforms to IEC directives for emissions, immunity, and safety.

www.pfinc.com/library/pdf_files/current_product_specs/PFA-2_spec_sheet_r-.pdf