Sylvania SRZ3000 - Manual (Page 64)

STB allows you to select a screen ratio and a display
mode (aspect ratio) to match the formats of the
program being broadcast and your TV screen.
You can also change to aspect ratios you prefer to
watch.
There are two screen ratios used in manufacturing
TVs. These are standard TV format (4:3), and
widescreen format (16:9).
NOTE:
Aspect ratio is the format for broadcasting and
displaying which are defi which e y formo is the