Stereo Mode; Mono Mode - Digilent Analog Discovery Reference Manual

Wavegen of the Analog Discovery is not directly connected to the adapter. The adapter
can process stereo audio signals from the Analog Discovery or from external sources. It
can also be used for analyzing mono audio signals fro external sources.
The Mono and Mono/Stereo measuring functions are implemented as in the circuits
below:
Mono/Stereo connector (J3) can be used to see mono or stereo inputs. In order to select
the mode for the oscilloscope, JP1 should be placed in the desired mode.

Stereo Mode

In stereo mode the signals from the connector are routed to Scope1+ and Scope2+ of
the Analog Discovery. Scope1- and Scope2- are connected to the ground. In this mode,
each audio channel corresponds to a scope channel.

Mono Mode

By selecting the mode Mono on JP1, the audio channel will be routed to Scope1+. As the
Jack connector is stereo, the second signal contact will be connected to the ground.
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