Options - Optoma EP761 Manual

User Controls
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Options

Source Lock
On: The projector will search for other signals if the current

input signal is lost.
Off: The projector will search specified connection port.
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High Altitude
Choose "On" to turn on High Altitude mode. Operates the fans at
full speed continuously to allow for proper high altitude cooling of
the projector.
Information Hide
On: Choose "On" to hide the searching message.

Off: Choose "Off" to show the searching message.
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Keypad Lock
When the keypad lock function is on, the control panel will be
locked, but the projector can still be operated by the remote
control. If canceling this function, use the remote control or press
the "Enter" key on the control panel for 3 seconds to turn it off.
Background Colour
Use this feature to display a "Blue" or "Black" screen when no
signal is available.
Reset
Choose "Yes" to return the display parameters on all menus to the
factory default settings.