Butterworth Filters

Analog and DSP (FIR) Band-Pass electronic signal filter modules and instruments from 1.0 Hz to 100 kHz. ...more

Low-pass analog and digital FIR electronic signal filter modules and instruments from 0.2 Hz to 2.0 MHz. Butterworth, Bessel, Chebychev, elliptic and constant-delay transfer functions are available ...more

Analog (Active) High-Pass electronic signal filter modules and instruments from 0.02Hz to 1.28 MHz. ...more

Analog and DSP (FIR) electronic signal filter modules and instruments from 0.02 Hz to 2.0 MHz. Precision low-pass, high-pass, band-pass, band-reject (Notch) offering low noise and distortion to <-120 dB. ...more

The DL Instruments 4120A Series Filters are dual channle low pass filters designed for high density, multichannel applications. Each plug-in filter module consists of 2 independent signal channels, each of which exhibits a 4 pole, maximally flat (butterworth) low pass filter characteristic, settable in 1/3 octave (1/10 decade) steps. ...more

The Trig-Tek, Inc. Model 550B Dual Channel Filter provides two independent channels of High Pass and Low Pass Filtering for use with multi-channel data acquistion systems. The Low Pass Filters section in these units utilize two seventh order elliptic filters in cascade, this allowing over 72dB/oct roll off. It is possible to cascade the ...more

The WBK18 provides a full set of features for making dynamic signal measurements. Eight channels of dynamic signal input for the WaveBook or ZonicBook. Built-in ICP biasing (4 mA), software selectable per channel. 8-pole Butterworth low-pass filter, programmable on a per-channel basis from 10 Hz to 50 kHz  ...more

The SIM965 Analog Filter is ideal for signal conditioning applications where Bessel or Butterworth filters are needed. Bessel filters offer clean step response (negligible overshoot) and linear phase response, while Butterworth filters provide excellent pass-band flatness with some overshoot ...more

The MSXB 048 Filtered Analog Input Expansion Board has a four-pole low-pass Butterworth filter on each of its 16 single-ended channels. For DAP applications that require analog filters to take out all above-Nyquist frequencies before signal conversion, it simply replaces the MSXB 037 Analog Input Expansion board. Signal inputs normally connect ...more

The Model V243 is a single-width, C-size, register-based, VXIbus module that is designed for thermocouple and other low-bandwidth, low-level signal applications. It provides up to 96 differential-input channels with programmable gain per channel and 2-pole, active, low-pass Butterworth filters on each channel. ...more

The AM102 is a plug-in programmable anti-aliasing filter for MA200 with 6-pole Sallen-Key Butterworth Filter with 8 selectable cut off frequencies. ...more

The National Instruments SCXI-1143 is an 8-channel, programmable lowpass Butterworth filter module, ideal for antialiasing applications. The architecture of this module consists of a programmable instrumentation amplifier and programmable 8th-order lowpass filter on each channel. Although all channels must be set to the same cutoff frequency, you c ...more

The Krohn-Hite Model 3940 programmable, dual channel, Butterworth/Bessel filter offers a programmable or benchtop filter covering a cutoff frequency range from 3Hz to 2MHz. ...more

The Krohn-Hite Model 3945 programmable filter provides one Butterworth channel of low-pass, tunable over the range from 170Hz to 25.6MHz; and two independent Butterworth or Bessel channels of low-pass, high-pass or bypass, one channel of band-pass or band-reject, tunable over the range from 3Hz to 2MHz. ...more

The Krohn-Hite Model 3944 is a 4-channel, Butterworth/Bessel filter offers a programmable or bench top filter covering a cutoff frequency range from 3Hz to 2MHz, with a frequency response characteristic of maximally flat (Butterworth) for clean filtering in the frequency domain, or linear phase (Bessel) to provide superior pulse or complex sig ...more

The Models 3905C and 3916C are Programmable Multi-channel Filter Systems which can be configured with many types of filter cards; Elliptical filters for anti-aliasing, Butterworth filters for clean filtering in the frequency domain, and Bessel filters which provide superior or pulse or complex signal filtering. ...more

The Models 3905C and 3916C are Programmable Multi-channel Filter Systems which can be configured with many types of filter cards; Elliptical filters for anti-aliasing, Butterworth filters for clean filtering in the frequency domain, and Bessel filters which provide superior or pulse or complex signal filtering. ...more

The Krohn-Hite Model 35 Tunable Active, Low-Pass Filter Card is the first programmable filter of its kind to cover the wide frequency range of 170Hz to 25.6MHz with 2 digits of resolution. The Model 35 is a 4-pole, maximally flat (Butterworth) filter, with an attenuation slope of 24dB/octave and a stopband attenuation of 100dB referred to 1Vrm ...more

The NEW 3A, 3B, 3C and 3D Series of continuous-time fixed-frequency precision active filter modules from Krohn-Hite provide filtering in a 1 to 8-poles and 16-pole compact package, with the choice of cutoff frequencies selectable within the frequency range from 1Hz to 2MHz low-pass and 1Hz to 600kHz high-pass. Choose between Butterworth or Bes ...more

The Krohn-Hite Model 3360 Filter Series are one, two or four channel filters providing ease of operation and the reliability Krohn-Hite has been known for since 1949; along with a price that will fit any budget. The 3360 Series provides a tunable frequency range from 0.1Hz to 200kHz, and with the 002 option, the range is extended to 0.005Hz. T ...more