BMA-200是一款便携式电池供电放大器，适用于EEG、ECG、EMG和其他细胞外应用。BMA-200具有宽增益范围、锐截止带通滤波器、交流校准器和内置音频放大器和扬声器，用于监控信号。通过前面板开关或通过外部逻辑信号来实现对电极的刺激传递。真正的DC响应是开关可选的，具有可变DC偏移控制。低功率电路有助于延长充电之间的工作时间，或者该装置可以使用附带的交流适配器工作。它具有稳定的DC操作，并包括可调DC偏移。

包括一条标准输入电缆，可与多种电极引线兼容。有源头台也可用于微电极应用..

标准功能

• For all extracellular recording applications
• Battery or AC operation
• Low noise, wide gain range
• Built in audio amp and speaker
• True DC response with offset
• Rugged laboratory or field amplifier
• Stimulus passing to electrodes
• Isolation head-stage (ISO-Z) and high-impedance head-stage (HS-1) are available

规范

• Input type and impedance: Differential instrumentation amp, > 10⁹ ohms
• Wideband noise, RTI: <7uV P-P 
• Common Mode Rejection: >95dB
• Gain range: 10X - 50,000X, 12-positions 
• Coupling: AC or DC, switchable
• Input connector: Amphenol 703-91T-3478-009 7-pin 
• Input offset adjustment ranges: +2mV, +20mV, +200mV, jumper selectable
• Voltages at input jack for external devices: +7.2V, 20mA max current
• AC calibrator: 1mV P-P square wave, approx. 10Hz
• Low-pass filter: 100Hz - 50kHz, 6-positions
• High-pass filter: DC - 300Hz, 6-positions
• Filter type, slope: Butterworth, flattest response, -12dB/octave
• Stim/record input: TTL negative logic, or switch closure
• Stimulus inputs (rear panel): 2mm (0.080”) pin jacks
• Audio amplifier: 200mW, built-in mylar speaker
• Audio output connector: 3.5mm stereo mini-phone jack
• Output connector (rear panel): BNC jack
• Operating time between charging: approx. 24 hours
• Power adapter/charger: 24VDC 
• Dimensions: 6W x 1.75H x 7D inches, 15 x 4.5 x 18 cm

Note 1: Not to be used for human life support applications.