Bio Amp

Overview:

The FE132 Bio Amp is a galvanically isolated, high-performance differential bio amplifier optimized for the measurement of a wide variety of biological signals such as ECG, EMG and EEG recordings. In conjunction with a PowerLab and LabChart, LabChart or Scope software a wide range of appropriate filters are available. It is supplied with a MLA2340 3 Lead Shielded Bio Amp Cable and MLA2503 Shielded Lead Wires (3 snap-on) making it suitable for human connection. An audio output is also available to help monitor signals. The Bio Amp is certified and approved for human connection.

Accessories suitable for use with the Bio Amp include:

• MLA700 Reusable ECG Electrodes
• MLA710 Chest ECG Electrodes
• MLAWBT9 EEG Flat Electrodes
• MLA0114/S ECG Lead Switch Box

Hardware:
ADInstruments signal conditioners only function with PowerLab data acquisition units and therefore are not suitable for use with other data acquisition systems.

Features:

• Full electrical isolation from power-line (mains) circuitry to guarantee subject safety
• A low-noise, high-gain differential amplifier specifically designed for biological signal measurements
• Software-controlled low-pass, high-pass and notch filters to remove unwanted signal frequencies
• Audio output for use with EMG or EEG signals and similar

Applications:

This Bio Amp can be used for recording EEG, ECG, EMG, EOG, ERG, sensory nerve action potentials (SNAP), visual evoked response (VER), cortical evoked potentials, and slow wave (smooth muscle) studies. For two fully isolated, high-performance differential bioamplifiers in the one unit, complete with audio output jack for headphones or powered speakers, see our Dual Bio Amp.

Specifications:

• Connection type: Six-pin DIN/MS socket to fit 3-Lead Bio Amp Cable (Tronomed D-1340)
• Input configuration: 1 isolated differential channel with isolated ground reference
• Input impedance: 200 MΩ differential, 30 pF (no cable) or 200 pF (supplied Bio Amp cable and leads) to isolated ground
• Safety: Approved to IEC601-1 BF (body protection) standard
• Isolation: 4000 V_rms (50 Hz for 1 minute)
• Amplification ranges: ±5 μV to ±100 mV full scale in 14 steps (combined PowerLab and Bio Amp)

• Gain accuracy: ±1.5 % all ranges
• Non-linearity: <0.1% within range
• Noise at various bandwidths:

• IMRR (isolation mode): >130 dB (to true earth, 50 to 100 Hz)
• CMRR (common mode): 85 dB (typical) @ 60 Hz
• Input leakage current: <3 μA_rms @ 240V, 50 Hz <2 μA_rms @ 120V, 60 Hz
• DC blocking: ±1 V
• Baseline restoration: Automatic

• Low-pass filter: Fourth-order Bessel filter, ±3% accuracy
• Low-pass options: Software selectable. Standard: 50, 100, 200, and 500 Hz and 1 and 5 kHz (all at –3 dB); EEG mode: 3, 10, 30, 60 and 120 Hz
• High-pass filter: First-order filter, ±0.25% accuracy
• High-pass options: Software selectable. Standard: 0.1, 0.3, 1, 3, and 10 Hz (all at –3 dB); EEG mode: 0.03, 0.1, 0.3 and 1 seconds
• Notch filter: Second-order filter, –32 dB attenuation; 50 or 60 Hz frequency (automatic sensing)

• Analog signal: ±2.0 V standard; ≤ ±4.0 V over range
• Audio: 3.5 mm (0.14") stereo jack; ±200 mV. Suitable for headphones or powered speakers

• I²C port: Provides control and power. Interface communications rate of ~50 Kbits/s.

• Dimensions (h × w × d): 50 mm × 76 mm × 260 mm (1.96" × 3.0" × 10.2”)
• Weight: 770 g (1 lb 11 oz)
• Power requirements: <2 W
• Operating temperature range: 0 to 35 °C, 0 to 90% humidity (non-condensing)