The BPF205 Band-Pass Filter is a plug-in module for the MC1 Signal-Conditioning System. It provides a selectable frequency pass-band from DC, 10, 20, 50, 100 or 200 Hz to 200, 500, 1k, 2k, 5k or 10 kHz, with a 12 dB per octave roll off at both the selectable low frequency and high frequency ends. An attenuator is provided at the input to permit high noise signals to1 be applied without exceeding the linear amplifier dynamic range limits of ±10V peak. The 0.1X, 1X attenuator is selectable by means of a front panel switch. The output amplifier features an X1, X10 gain selector switch mounted on the front panel. This allows the overall module gain to be normalized for unity.