The DPA 2FX module is a completely versatile preamplifier plug-in unit. It is equipped with a high impedance differential input, offset compensation, high- and low-pass filters, and gain control. The unit is suitable for direct recording of field potentials, signals from peripheral nerves and for processing bioelectrical signals. 

Features 

¤     Differential input, CMR > 80 dB  
¤     Input impedance: 10 MOhm related to ground, shunted by 30 pF
¤     Overvoltage protection: ± 100 Volt
¤     AC/0/DC switch for each input, AC corner frequency: 0,3 Hz
¤     Offset compensation: ± 1 Volt or ± 10 Volt
¤     Gain 1-10k, 1-2-5-10-20-50-100, selected by rotary switch
¤     Gain ranges x1, x10, x100 , selected by toggle switch 
¤     Highpass filter (single pole), attenuation -6 dB/octave, 11 corner frequencies: 3, 
       30, 100, 300, 400, 500, 600, 800, 1 k, 3k, 10k Hz  
¤     Lowpass filter (single pole) attenuation -6 dB/octave, 12 corner frequencies: 30,
       100, 300, 500, 700, 900, 1.3k, 1.5k, 1.7k, 3k, 10k, 20k Hz  
¤     Output impedance: 250 Ohm, operating range: ± 12 Volt
¤     Overload LED's: activated at ± 10 Volt

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