Samsung SyncMaster 400T Owner's Manual page 26

- The Aspect Ratio Control button controls Aspect Ratio available for Video, S-Video and DVD
6) Click the DTV tab or the PC tab to control Aspect Ratio for respective Input Source.
Aspect Ratio Control is available only for the displays for which power status is ON.
6. Aspect Ratio Control – DTV
1. Click Select All or use Check Box to select a display to control.
Info Grid shows some basic information necessary to Aspect Ratio Control.
1) Click the DTV tab to adjust Aspect Ratio for DTV.
2) Info Grid displays only the display having DTV as input source.
3) Adjust Aspect Ratio of the selected display one by one.
4) You can also adjust Aspect Ratio for Video PC if you click on the Video or the PC tabs.
Aspect Ratio Control is available only for the displays for which the power status is ON.
6. Aspect Ratio Control – PC Analog / PC Digital
1. Click Select All or use Check Box to select a display to control.