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Biomedical Signals Acquisition |
Offset |
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When recording biomedical signals, it is
often the case that the baseline needs to be adjusted: the signal may
not fall within the amplifier range. One needs to adjust the offset, or
the fluctuation in the baseline value of the signal. |
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An example of function
generator with adjustment knobs for the following parameters:
- waveform
frequency
- waveform type
- waveform
selection
- waveform
amplitude
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| Adjusting the DC
offset knob on the function generator causes the trace to move from the
original baseline. If not careful, the trace could be outside of the
display range as well as the amplifier range. |
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To continue with the
topic Gain Settings, click here |