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3321 - Krohn-Hite Tunable Filters


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  • Model: 3321
  • Manufactured by: Krohn-Hite
  • High end frequency limit: 99.90kHz
  • Channels: 1
  • Operation Modes: LP, HP
  • Extra Specifications: Variable Filter

The 3321 Variable Filter is a solid state, variable electronic Filter that is digitally tuned over the range from 0.01Hz to 99.9kHz. Its single channel can be operated in either the High-Pass or Low-Pass mode. It has an attenuation slope of 24 dB per octave. 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
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