All qs-scope controls and settings are accessed using the multi-direction switch labelled "NAVIGATE" on the EK-LM3S3748 board. This control offers up, down, left, right and select functions in a single unit. Rocking the control in the desired direction sends ``up'', ``down'', ``left'' or ``right'' messages to the application and pressing on the center sends a ``select'' message.
Controls and settings are arranged into groups by function such as display settings, trigger settings, file operations and setup choices. These groups are accessed by pressing ``select'' to display the main menu. With the menu displayed, use ``up'' and ``down'' to select between the available groups of controls. When the desired group is highlighted, press ``select'' once again to dismiss the menu.
Controls from the currently selected group are shown in the bottom portion of the application display. Use ``up'' and ``down'' to cycle through the controls in the group and ``left'' and ``right'' to change the value of, or select the action associated with, the control which is currently displayed.
For example, to set the oscilloscope to trigger on a rising edge, the following actions would be performed: