DC/AC/GD

The input from a channel can be selected by using one of the "DC/AC/GD" switches.

In position "AC" the signal is passed through a capacitor and the DC component is removed. In position "DC" the DC components are not filtered.

The position "GD" ("Ground") removes the input signal from the CRO and results in a horizontal line on the screen, called the 0v level.

This CRO simulation is limited to sine-wave signals. The "DC" position generates the same waveform as "AC" position.