NEC WT615 - Manual (Page 102)

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Image Options
Adjusting Clock and Phase [Clock/Phase]
This allows you to manually adjust Clock and Phase.
Clock ..................... Use this item to fine tune the computer image or to remove any vertical banding that might appear. This
function adjusts the clock frequencies that eliminate the horizontal banding in the image.
This adjustment may be necessary when you connect your computer for the first time.
Phase .................... Use this item to adjust the clock phase or to reduce video noise, dot interference or cross talk. (This is
evident when part of your image appears to be shimmering.)
Use "Phase" only after the "Clock" is complete.
Adjusting Horizontal/Vertical Position [Horizontal/Vertical Position]
Adjusts the image location horizontally and vertically.
Masking Unwanted Area [Blanking]
This feature allows you to mask any unwanted area of the screen image.
Adjust the Top, Bottom, Left or Right blanking with the SELECT
̇ or ̈ button.
6. Using On-Screen Menu