The invention relates to a multi-channel digital oscilloscope comprising: a plurality of analog inputs, circuits for the analog processing of input signals, sampling and digitizing circuits, means for triggering and synchronizing different channels, and electrical isolation means. The invention is characterised in that, for N channels, where N is greater than 1 and at least equal to the total number of channels, at least the sampling and digitizing circuits are located between the analog input and the isolation means.
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