Important Note: It has come to our attention that some of our competitors have suggested to potential customers that their data acquisition systems are the only systems which (to their knowledge) are tested and compliant with IEC601-1 (Medical Safety Test Standards relating to Patient Leakage Current, Dielectric Strength, Creepage and Air Clearance). This of course implies that Biopac systems are not tested, compliant or indeed human safe, which is simply not true.All Biopac data acquisition and analysis systems and relevant amplifiers are human safe, fully tested and compliant with all appropriate and relevant European and worldwide standards for medical safety (Including: IEC601-1 Medical Safety Test Standards, EN60950:1992/A1 : 1993/A2:1993 Low Voltage Directive, EN55022:1997 / IEC801-2:1984 Electromagnetic Compatibility Directive). Full details and copies of test certification and documentation are available on request.
An Introduction To The Biopac MP100 Workstation.The MP100 Workstation is a very powerful 16 channel (analog) digital data acquisition, archive and analysis tool for the modern laboratory. A starter system will cost you less than a traditional pen or thermal array chart recorder but will give you much, much more in terms of recording, display and analysing your data. The MP100 system comes with the powerful AcqKnowledge software which has been developed specifically for use with the MP100 system. This software is extremely easy to use for all types of applications. Using the familiar Windows & MacOS operating environments, AcqKnowledge is immediately accessible. Because AcqKnowledge has been developed over many years with the benefit of customer feedback, most of the questions you will ask of it will already have been answered. Whilst recording your data, you can add event markers, switch between display modes - chart, scope and X,Y at the touch of a button, re-size individual traces, enable or disable the display of individual channels, automatically re-scale your display (to give your signals the best fit for the screen space available), manually adjust the display scale to any scale you wish . Pause the display (whilst still recording) to enable you to scroll back through your data and take measurements - which can be pasted in to AcqKnowledge's online text journal (or another application such as Microsoft Excel) where you can also add any notes as the experiment proceeds... and much more besides. AcqKnowledge comes with a powerful array of both online and off line calculations. With any recording you can have up to 16 calculation channels, which are calculated and recorded in real-time along with your 'raw' data. These calculations include :-
Example of FFT - Fast Fourier Transformation Analysis.As well as performing these powerful calculations on-line, all of these and more can be performed off-line. Additional functions include Derivative Filters (with Windowing options), FFT Fast Fourier Transformations for spectral (frequency) analysis, Histogram Function (Ideal for Heart Rate Variability). Cursor measurements (which can be taken at any time during or post acquisition - and which can also be automated) include :-
Data can be readily exported as measurements, data points or scaleable graphics file formats into Microsoft Excel TM or any other statistical or presentation package. Off Line Averaging.AcqKnowledge software has a unique ability to perform off-line averaging. Traditionally, people would take data measurements at various points throughout their data, say for example an ECG waveform, you might measure the R-wave height, the P-wave height, the S-T interval, QRS width etc.. these measurements would be taken over a number (if not all) of the ECG complexes recorded. The resulting data would be taken into a stats package and averaged perhaps 5 or 10 minutes pre and post a challenge. The difference in the average measurements for the different periods would then be taken as a measure of effect of the challenge. Now Biopac have introduced the off-line averaging function, the traditional method may be a thing of the past!. The off-line averaging function works with either cyclical signals or with selected time periods. When the intelligent algorithm detects a peak within the signal (say the R-wave of an ECG signal) or it comes to the end of your chosen time period, two cursors are set relative in time to the peak. The data points between these cursors is set aside and averaged to create the 'average complex' for either an area of the trace you have highlighted, a selected area a number of cycles/beats or a chosen period of time. Pre and post challenge averages (up to 60 averages) can then be displayed using the scope mode (see below) and cursor measurements (listed above) can be taken to measure changes in time and amplitude at any point during the complexes.
Off-Line Averaging: Example of multiple ECG Averages displayed using AcqKnowledge's Scope mode.
Site by Rob Jones. |
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