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Due to the fact that the OpenLab oscilloscope uses non-differential ADCs for both input channels, the voltage at the ADCs should only be at positive levels.
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In order to measure negative voltages, the signal has to be shifted into positive levels during signal conditioning. This will add an offset to the zero point of the measured signal.
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Finally, this will create a “virtual” zero point which enables measuring negative and positive voltages.
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The exact location of this “virtual” zero point is known by the Graphical User Interface (GUI). The GUI will than reverse the effect of stage 4 in order to display the measured signal correctly.
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Finally, this will create a "virtual" zero point which enables measuring negative and positive voltages.
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The exact location of this "virtual" zero point is known by the Graphical User Interface (GUI). The GUI will than reverse the effect of stage 4 in order to display the measured signal correctly.
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{empty} +
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