8 Channel Bio Amp

Overview:

The GT205/F 8 Channel Bio Amp is a fully isolated, stand-alone biological amplifier that is optimized for the measurement of up to 8 biopotentials on a single subject. It consists of 4 modules, with each module containing two channel amplifiers that share a common ground input. The ground inputs from channels 1 to 4 are internally linked, as are channels 5 to 8. The hardware modules are provided with two ranges(500 µV/5 mV) and filter settings (Low-Pass: 100 Hz/1 kHz; High-Pass:0.5/2 Hz) that are selected via DIP-switches located at the rear of the unit.

LabChart (or LabChart) software provides further options of amplifier range and filter settings to suit a variety of biopotential signals. This bioamplifier is particularly suitable for EEG, ECG/EKG, EMG and/or EOG recordings and can be used for both unipolar and bipolar recordings.The unit is supplied with a Sub-D to BNC cable for connecting each channel output to PowerLab data acquisition units as well as a medical-grade power supply. A 16-Channel Bio Amp is also available.

Electrodes are NOT supplied with the 8-Channel Bio Amp and must be ordered separately. Suitable electrodes and lead wires include the:

• MLAWBT9 Flat EEG Electrodes for recording ECG, EEG, EOG and EMG
• MLA0315 Lead Wires (unshielded, 5 snap on)
• MLA1010B Disposable ECG Electrodes.

Ordering Information:
When ordering please specify mains frequency F = 50 or 60 for 50 Hz or 60 Hz mains frequency.

For product specification and a summary of how to use the GT205 download the technique note. For a guide to the most appropriate bioamplifier configuration to suit your requirements download the bioamp selection guide.

Features:

• Multi-channel amplifier for EEG, EMG, EOG and ECG recordings
• Independently certified for connection to human subjects
• 8 bipolar/unipolar channels
• User-selectable filter and range settings via DIP-switches
• Additional range and filter settings using LabChart software
• Direct analog-outputs suitable for connection to PowerLab data acquisition systems

Applications:

Any application in which the researcher wishes to record more than 2 biopotentials, such as EEG, EMG, EOG and ECG recordings from a single subject will require an 8 or 16 Channel Bio Amp. Common research applications include:

• Sleep Studies
• Multichannel EEG
• Psychophysiology

The 8 Channel Bio Amp is designed for use in teaching and research applications. It is NOT intended for clinical or critical life-care use and should NEVER be used for these purposes.

Specifications:

Input Safety sockets for biosignal electrodes

• Output Output voltage: ± 5 V
• Output connector: 25 pin Sub-D with 8 BNC connections (1.5 m cable)

Amplifier Module

• 8 unipolar/bipolar channels
• Noise level RTI: 0.7 μVss and 0.28 μVss for 0.1 to 10Hz
• CMRR: > 110 dB
• Subject Isolation: > 4 kV
• Input Impedance: > 110 MOhm
• Signal Amplification: μV up to mV range
• Frequency Range: 0.5 Hz to 1 kHz

Settings

• Selectable filter and range settings via DIP-switches
• Signal Type- g.BSamp Setting:

• 50 or 60Hz notch filter: on/off switchable

Physical Size

• Length: 31 cm; Width: 25 cm; Height: 7 cm
• Weight 2 kg