Y-Pos

The "Y-Pos" control determines the vertical image offset of both channels independent of one another. In "Dual" mode i.e. two signals can be displayed in two different display areas of the screen without touching each other.

The following screenshot shows an example: The purple cable is attached to channel 1 and the orange cable is attached to channel 2. The "Dual" button is pressed. The "Y-Pos. I" control is turned slightly (channel 1 is moved up the screen),  "Y-Pos. II" control is also turned (channel 2 is moved down the screen).