text: UFI Model 2283FT series
  UFI Model 2283FT Family
  of Fetrode™ Amplifiers
  UFI Fetrode™ artifact reduction technology inserts a high-input-impedance, low-output-impedance buffer amplifier right at the active electrode site. This technique minimizes the bothersome noise artifacts induced by unavoidable electrode cable motion.
  The 2283FT family of Fetrode bioamplifiers integrates the Fetrode technology to make optimal use of the improved bioelectric signals that Fetrodes can provide. UFI currently offers two different Fetrode amplifier configurations to cover a broad range of bioelectric signal requirements.
  Model 2283FT adjustable Fetrode amplifier
  The Model 2283FT is a stand-alone Fetrode bioamplifier that meets many physiological research needs. Adjustable gain and frequency response suit it to a wide variety of input signals and downstream instruments.
  Model 2283FT specifications
  Channel gain: 10, 100, 1000, 10000 (switch selectable)
  Low frequency roll-off: 0.02, 0.15 and 1.5 Hz (switch selectable)
  High frequency roll-off: per customer requirements (50 Hz typical)
  Other controls: common mode rejection (CMR) trim, battery level indicator
  Output connector: BNC on back panel
  Power supply: 9V battery or optional wall-mount transformer
  Case size: 2.5" x 5" x 7" (64mm x 127mm x 178mm)
  Model 2283FTi isolated adjustable Fetrode amplifier
  The Model 2283FTi Fetrode amplifer is just the same as the Model 2283FT, except that it incorporates subject isolation using an off-the-shelf signal isolator.