NEC NP4001/NP4000 - Manual (Page 84)

5. Using On-Screen Display
72
Overscan
Video images normally exceed the size of the display screen. The edge of the picture
may or may not de displayed correctly. The border area that is cropped can be adjusted
by using the Overscan menu.
Set the overscan percentage between 0 – 15% to compensate for different screen sizes.
WXGA Mode (NP4001 only)
Selecting On will give priority to a WXGA (1280 x 768) signal in recognizing an input
signal.
When "WXGA Mode" is set to On, an XGA (1024 x 768) signal may not be recognized
on NP4001. In this case, select Off.
To check if the signal is recognized, go to "Source" under "Information" menu.
(see page
97 )