Animal Bio Amp

Overview:

The FE136 Animal Bio Amp is a galvanically isolated, high performance, software-controlled differential amplifier suitable for the measurement of a wide variety of biological signals in animals and isolated tissues. Three shrouded 1.5 mm male pin sockets allow the direct connection of electrodes to this amplifier. Included with the FE136 Animal Bio Amp are MLA1212 Micro-Hook Electrodes for FE136 (3 pk).

The Animal Bio Amp can also be used with:

• MLA1213 Needle Electrodes for FE136 (3 pk)
• MLA1214 Spring Clip Electrodes for FE136 (3 pk)

The MLAC14 Adapter Pack (2 mm Pin to SAF, 5 pk) is available (purchase separately) for connecting the FE136 Animal Bio Amp to any leads with 2 mm pins.

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

NOT FOR HUMAN CONNECTION or RECORDINGS

Features:

• 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 for particular uses
• Audio output for use with EMG or EEG signals and similar

Applications:

Animal ECG, EMG and EEG, sensory nerve action potentials, visual evoked response, cortical evoked potentials and recording the long term electrical activity involved in involuntary muscle contractions as well as cardiac electrical activity in isolated heart experiments.

Specifications:

Amplification

• Input amplifier: High impedance, differential (floating), electrically isolated
• Amplification range: ±5 μV to ±100 mV full scale in 14 steps

• Mid-band gain accuracy: ±1.5% (all ranges, within Bio Amp)
• Non-linearity: 0.1% within range
• Noise at various bandwidths:

• CMRR: 85 dB (typical) @ 60 Hz
• IMRR: >130 dB (to true earth, 50 to 100 Hz)

Input

• Connection type: Three shrouded 1.5 mm male pin sockets
• Input impedance: 200 MΩ differential
• Input leakage current: <3 μA_rms @ 240 V, 50 Hz <2 μA_rms @ 120 V, 60 Hz
• DC blocking: ±1 V
• Baseline restore: Automatic

Filtering

• 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)

Output

• 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

Control Port

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

Physical Configuration

• Dimensions (h × w × d): 55 mm × 120 mm × 260 mm
• Weight: 1.2 kg
• Power requirements: <2 W
• Operating temperature range: 0 to 35 °C, 0 to 90% humidity (non-condensing)

ADInstruments reserves the right to alter these specifications at any time.