The Krohn-Hite 3940 programmable, dual channel, Butterworth/Bessel filter offers a programmable or benchtop filter covering a cutoff frequency range from 3Hz to 2MHz. It has a frequency response characteristic of maximally flat (Butterworth) for clean filtering in the frequency domain, or linear phase (Bessel) to provide pulse signal filtering. The passband gain is unity, and the attenuation slope is 24dB/octave per channel. The 3940 will accept input signals of ±4.5V peak and provides input and output gains of 0dB or 20dB which can be selected via the front panel keyboard or over the GPIB bus.
| Krohn-Hite Corporation | |
|---|---|
| Product Category | Signal Filters |
| Product Number | Model 3940 |
| Product Name | 3Hz to 2MHz, High-Pass/Low-Pass Butterworth/Bessel Programmable Filter |
| Form Factor | Rack Mount (optional feature); Stand-alone |
| User Interface | Front Panel |
| Input Channels | 2 # |
| Architecture | Analog |
| Number of Poles | 4 |
