Acer X1123HP User Manual page 34

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Use this function to customize the startup screen. To capture
the image that you want to use as the startup screen, follow
the instructions below.
Notice
Before proceeding with the following steps, make sure that
the "Keystone" is set to the default value "0" and the
projector is in its native resolution.
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Screen Capture
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Source Selection
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Selects a preferred closed captioning mode from CC1, CC2,
CC3, CC4 (CC1 displays captions in the primary language in
Closed Caption your area). Select "Off" to turn off the captioning feature.
This function is only available when a composite video or S-
Video input signal is selected and its system format is NTSC.
Selecting "On" enables the function. The MHL port(s) and the
DC 5V out port/USB A port (if available) on the projector can
output 5V power when the projector is turned on.
DC 5V Out
Selecting "On" enables the function. The MHL port(s) and the
DC 5V out port/USB A port (if available) on the projector can
output 5V power when the projector is turned on or in
USB 5V
standby mode.
(Standby)
Select "Screen Capture" to customize the startup screen.
A dialog box appears to confirm the action. Choose
"Yes" to use the current image as your customized
startup screen. Choose "No" to cancel the screen capture
and exist the Onscreen Display (OSD).
A message appears stating that the screen capture is in
progress.
When the screen capture is finished, the message
disappears and the original display is shown.
Manual: When switching input signals, you need to press
"SOURCE" on the control panel or remote control, or
the direct source key on the remote control.
Auto: The projector will detect your source
automatically.
Only MHL port(s) will provide power output when
MHL port(s) and USB A port are both plugged.
Only MHL port(s) will provide power output when
MHL port(s) and USB A port are both plugged.