• 1:1 — The input source displays without scaling.

Use 1:1 aspect ratio if you are using one of the following:

– VGA cable and the computer has a resolution less than XGA (1024 x 768)

– Component cable (576p/480i/480p)

– S-Video cable

– Composite cable

• 16:9 — The input source scales to fit the width of the screen.

• 4:3 — The input source scales to fit the screen.

Use 16:9 or 4:3 if you are using one of the following:

– Computer resolution greater than XGA

– Component cable (1080i or 720p)

Hope it helps