You can change the display type (Background or Spectrum analyzer).
Select "DISP Type" by pressing the [] or [] button.
Press the [ENTER] button.
The display type setting mode is activated.
Select a setting item by pressing the [] or [] button.
When the button is pressed, the setting item changes in the following order.
Background ↔ S/A
Press the [ENTER] button.
Switches among the adjustments modes.