Auditory Brain Response – Brainstem Audiometer (ABR) BERA 4000

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The HOMOTH BERA 4000 PC-module is an advanced brainstem audiometer developed with the latest ENT research. Its cutting-edge processors offer a wide range of functions, ensuring long-term usability through software updates. Pre-programmed standard procedures streamline operation, while custom measurement programs can be created as needed. The EXPERT-MODE feature allows real-time adjustments during sessions, with up to 16 curves stored for later analysis. The program’s intuitive interface includes online help for user support.

Technical Specifications

  • System: PC module
  • PC requirement: Pentium PC from 500 MHz, USB 2.0 port, Windows XP, 7, 8, 10 (32/64 bits)
  • Stimulus: Click 50 – 500 ?s
  • Polarity: positive, negative, and alternating
  • Rate: 1-50 per second in 0.1 steps
  • Anesthesia: 0-80 dB white noise
  • EEG amplifier: 80 dB / input impedance > 48 Mohm, automatic and manual gain control
  • Averager: max. 10,000 sweeps
  • Analysis time: 10 ms (early potentials)
  • Artifacts: Real-time elimination by rise time and amplitude
  • Filter:
    – High pass 100 – 150 – 200 – 300 Hz
    –     Low pass 1 – 2 – 3 – 8 kHz
    –     Software filters
    –     50 Hz mains filter
  • Presentation of results:
    – Curve diagram 8 x right / 8 x left
    –     Latency graph
    –     Direct comparison right and left in a diagram
  • Measuring cable length: 275 cm + 60 cm electrode connections
  • Power supply: 13.2 V, ext. Power supply 100-240V, 50/60 Hz, 15 W
  • Dimensions: 330 x 80 x 265 mm (WxHxD)
  • Weight: 2.1kg
  • Accesories: Headphones DD 45, measuring cable with 3 electrode clamps red, yellow, black, 50 disposable electrodes, USB cable