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BioNomadix 2Ch Wireless EMG Amplifier

BioNomadix®: Physiology Where, When, and How You Want

Amplifier for wireless, wearable physiology

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BioNomadix 2Ch Wireless EMG Set
Part #: BN-EMG2

The Dual Wireless EMG BioNomadix Pair consists of a matched transmitter and receiver module. The matched pair is specifically designed to measure one or two channels of Electromyogram (EMG) data from ambulatory subjects. EMG data can be recorded from two independent sites. BioNomadix wireless EMG transmitters and receivers are part of a complete research system. These units interface with the MP160 (or older MP150) and data acquisition and analysis platform and AcqKnowledge software, allowing advanced analysis for multiple applications and supporting acquisition of a broad range of signals and measurements.

EMG signal data is transmitted at a rate of 2,000 Hz, providing an extremely high resolution wireless EMG waveform at the receiver’s output. Raw data from the pair is bandlimited from 5.0 Hz to 500 Hz, to provide a very high quality recording. The matched pair incorporates internal highpass and lowpass filters to provide for high quality amplification of the EMG waveform, which results from the electrical potentials generated by muscle cells. The high signal to noise ratio and high time-based sampling resolution permit the pair to be used for precise mean and median frequency, power spectrum or integrated analysis studies.

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MODULAR CONSTRUCTION

Amplifiers snap together for easy system configuration and re-configuration.

Intuitive, Elegant AcqKnowledge Software

Powerful automated analysis. Instantly & easily view, measure, analyze, transform, and report data.

Powerful MP160 Data Acquisition and Analysis System

Flexible, proven modular data acquisition and analysis system for life science research.

BioNomadix Dual Ch Wireless EMG Module
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Part #: BN-EMG2
Categories: Amplifiers - Research, BioNomadix Wireless Wearable Physiology - Research
Subcategories: Biopotential Amplifiers - Research, Transmitter-Receiver Amplifiers - Research

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The pair emulates a “wired” connection from the computer to subject, with all the benefits of a fully-wireless recording system.

The module set has a fixed gain of 2,000. The largest EMG signal which can be measured is 10 mV pk-pk. The smallest signal which can be detected is less than 1.5 µV rms.

Biopotential amplifier/transmitter signal to noise ratio is very high (in excess of 65 dB), as the noise floor of the amplifier/transmission system is only 1.5 µV rms (bandwidth of 5.0 Hz to 500 Hz).

Wireless BioNomadix have a variable timing jitter of ±0.5 ms rms, due to digital data buffering and wireless transmission, and are not recommended for Nerve Conduction Velocity (NCV) applications or any other physiological measurement where equivalently small timing differences are being measured; instead, BIOPAC recommends our wide range of wired amplifiers, such as EMG100C.

Interference with other recording modules or systems is greatly minimized because the transmitter is completely battery operated and operates totally independently of any other recording grounds or power sources. The recording transmitter is also extremely safe to use, because there is no physical connection to supply mains.

The transmitter attaches to the subject’s legs, arms, head or torso via stretchy Velcro strap, a stretch-mesh BioNomadix Shirt (see accessories), or Coban™ self-adhesive wrap (WRAP1). The exterior transmitter body dimensions (W x H x D) are approximately 6 cm x 4 cm x 2 cm and it weighs approximately 54 grams.

The transmitter’s battery can provide power for up to 72 hours of continuous operation.

Due to battery operation of the wireless transmitter and close proximity to the subject’s body, common-mode rejection ratio is extremely high, considerably in excess of any typical wired EMG recording system. Accordingly, and also due to the pair’s low bandwidth, notch filters to remove mains interference (50 or 60 Hz) are typically not required.

Use AcqKnowledge to evaluate activation level and muscle recruitment order. The software can automatically integrate the raw EMG signal and provide a detailed frequency analysis of the EMG data. Wide bandwidth EMG data can be filtered to specific frequency ranges to accommodate high quality EMG signal identification even in the presence of extensive subject motion.

EMG100C EMG amplifier with automated EMG frequency analysis


The new BioNomadix series of wireless, wearable physiology monitoring devices for life science research are available for a wide range of signals, including ECG, EEG, EOG, EMG, EGG, Respiration, Pulse, Temperature, Electrodermal Activity, Impedance Cardiography, Accelerometry, and Gyro. BioNomadix are typically dual-channel units, offering either two of the same signal or a combination of signals.

BioNomadix noninvasively record high-quality, full-bandwidth data while comfortably allowing subjects to move freely in natural indoor environments. Each BioNomadix device consists of two parts, a transmitter that is worn by the subject to amplify and send the physiological data, and a receiver module. BioNomadix transmitters use digital transmission and short leads or transducers placed close to the signal source to provide excellent signal quality. BioNomadix are configured for specific signal types, so you don’t have to adjust settings on the hardware or software for high quality data.

Multiple BioNomadix can be used to provide the optimum signal combination for a research study requiring biopotential or transducer signals. Up to 16 channels of BioNomadix data can be acquired with one MP150 Research System!

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