User`s manual

Channel Set Select to edit channel information.
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Press the up / down button to select Analog TV.
In this menu, you can edit the Status, Name, Fine Tune, TV System, and
sequence for the Analog TV channels. Use the navigational buttons to
select and modify the settings, and press the enter button to confirm.
7.3 Changing Video Settings
Press the left / right button on the remote control to select the Video tab from the menu bar.
Aspect Ratio Select to set aspect ratio.
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