Krohn-Hite 3323 Variable Filter

The 3323 Variable Filter is a solid state, variable dual-channel electronic filter that is digitally tuned over the range from 0.01Hz to 99.9kHz. It can be operated in High-Pass, Low-Pass, Band-Pass or Band-Reject mode. It has an attenuation slope of 48 dB per octave in High-Pass or Low-Pass mode, 24db per octave in Band-Pass or Band-Reject mode. The frequency response characteristic of the unit is a fourth-order Butterworth with maximum flatness for cleanest filtering in the frequency domain. For pulse or transient signal filtering, a front panel switch is provided to change the frequency response to RC optimum for transient-free filtering. Frequency Accuracy: ?2% Pass Band Gain: 0 dB or 20 dB Maximum Attenuation: 80 dB Floating (ungrounded) Operation.