The rotary knob increases and decreases numerical values, scrolls within lists, activates controls and confirms entries.

Turning or pressing the rotary knob is equivalent to the action of the Cursor Up and Cursor Down keys or the ENTER key in the NAVIGATION keypad.

STEP SIZE opens an input box to select the steps (in units of the current physical parameter) between two consecutive values if the rotary knob is turned to increase or decrease numeric values. See Dialogs.