Eizo CG221 - Manual (Page 33)

(4) Screen image is smaller or larger than the actual screen images.
=> Use the adjustment.
Adjustment is needed when the input signal resolution and the resolution now
being displayed are different.
Select and confirm if the resolution now being displayed is the
same as the input resolution. If it is not, adjust the vertical resolution using the
Up and Down switches and adjust the horizontal resolution using the Right and
Left switches.
4.Adjust the output signal range (Dynamic Range) of the signal.
=> Use the < Range Adjustment > of menu.
This controls the level of output signal range to display the whole color gradation (256
colors).
[Procedure]
Select the in the ScreenManager and touch the Auto Adjustment
switch on the control panel to adjust the Range Adjustment.
The screen blanks for a moment and adjusts the color range to display the whole color
gradation of the current output signal.
The lower resolutions are enlarged to full screen automatically. Using the Size> function in the menu enables to change the screen size.