Lenovo D154W 用户手册

Clock (pixel frequency) adjusts the number of pixels scanned by one horizontal sweep. 

If the frequency is not correct, the screen shows vertical stripes and the picture does not have 
the correct width. 

·   Phase adjusts the phase of the pixel clock signal. With a wrong phase adjustment, the 

picture has horizontal disturbances in light picture. 

4.    When the image no longer looks distorted, save the Clock and Phase adjustments. 
5. Press Auto 

  to leave the OSD menu. 

 

3-4    Flat Panel Monitor User 's Guide