NEC NP4001/NP4000 - Manual (Page 82)

5. Using On-Screen Display
70
NP4001 Aspect Ratio Options:
4:3 – Standard TV screen (4:3), proportionally four units wide for every three units high,
no matter the size of the screen.
16:9 – A wide-screen aspect ratio for video.
15:9 – Uses the full display.
Letterbox – Reduced image to display the true aspect with black borders on top and bot-
tom.
Native – Displays the current image in its true resolution.
Normal – Displays the current image in its aspect ratio.