Taking EMG Measurements

The SX230 is an active EMG sensor designed and manufactured by Biometrics and has been developed with ease of use and superb quality of signal in mind.

The SX230 may readily connect to either the DataLOG or DataLINK. Both these instruments are general purpose data collection devices and may collect signals from a wide range of sensors simultaneously with the EMG. This is ideal for correlation of muscle activity with other physiological parameters such as grip strength.

Graphs showing extensor EMG and 3 repetitions of maximum grip strength of
a normal subject. Please note that this EMG trace is the raw data and NO filtering
has been applied to reduce apparent artefacts. Data collected using DataLINK,
active EMG sensor SX230 and hand dynamometer G100.

The contact switch assembly type no. FS4 is readily interfaced to both the DataLOG and DataLINK giving the user the ability for example to monitor heel contact and toe off during EMG gait trials.

Using the DataLOG or DataLINK the stored data may be displayed and analyzed
within the Biometrics software, or the raw data may be saved as an ASCII file
for import into other analysis programs.

EMG and the DataLOG

The DataLOG offers the user the ability to collect EMG and other data reliably from up to 8 channels simultaneously in a truly portable configuration. When more than 8 channels are required 2, 3 or 4 DataLOGs may be synchronised using a simple cable attachment providing options for 16, 24 and 32 analog channels. The DataLOG Display and Analysis software allows for an unlimited number of real date and time stamped data files to be opened simultaneously and the time axis may be tracked across all files allowing display and analysis for a large number of channels.

The capability offered to the user of EMG measurements using the DataLOG is unrivaled even by much more costly systems.

EMG and the DataLINK

The DataLINK provides the user the ability to collect EMG and other data simultaneously with real time display and real time data analysis. The usefulness and simplicity of this accurate real time display and real time feedback is emphasized for both a research and educational setting.

The DataLINK Display and Analysis software allows for:

• 8 analog channels and 5 digital channels to be displayed and analyzed real time
• real time display and real time scaling in engineering or SI units
• adjustable real time audible and visual alarms for any channel

Additional Information

Biometrics DataLINK/DataLOG EMG Sensors
Display and Analysis of EMG Data
Hints for Analyzing EMG

DataLINK and DataLOG are trademarks of Biometrics Ltd.