Microtek 710S User Manual page 17

Use the & key to move to the
highlight. Press & to get a larger or smaller viewing size.
Adjust the phase tracking of the display signal to reduce display flicker.
An invalid phase tracking will cause unstable and flickering display.
Use the & key to move to the Phase item, then press the
key to highlight. Press & to obtain better image quality.
Five OSD languages are supported for this monitor, as shown by the
screen below.
icon , then press key to