Epson LightScene EV-115 2200-Lumen WXGA Laser 3LCD Projector (Black) - Manual (Page 141)

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Input Signal Settings - Signal Menu
Normally the projector detects and optimizes the input signal settings automatically. If you need to
customize the settings, you can use the Signal menu. The available settings depend on the currently
selected input source.
To change settings for an input source, make sure the source is connected and select that source.
Setting Options Description
Aspect See the list of available
aspect ratios Sets the aspect ratio (width-to-height
ratio) for the selected input source