Optoma Ep781 Projector User Manual

							
English
User Controls

Using the Remote Control
 PowerRefer to the “Power On/Off the Projector” section 
on pages 14-15.
Re-Sync Automatically synchronizes the projector to the 
input source.
KeystoneAdjusts image distortion caused by tilting the 
projector (±16 degrees).
Display 
Format
Display the “Display Format” section of the on-
screen display menu to select the desired aspect 
ratio.
 Laser 
Button  
Aim the remote at the viewing screen, press and 
hold this button to activate the laser pointer.
AV MuteMomentarily turns off the audio and video. Press this button again to unlock.
FreezePress “Freeze” to pause the screen image. Press this button again to unlock.
Volume +/-Increases/decreases speaker volume.
Display ModeSelect the display mode from PC, Photo, Video, 
sRGB and User.
Mouse 
Control
Use this button to navigate the mouse on the 
page.
Mouse Right 
Click
Mouse right click.
Mouse Left 
Click
Mouse left click.
Pg Page Up Use this button to page up.
Pg Page Down Use this button to page down.
 Zoom In Zoom in to magnify the image.
 Zoom Out Zoom out to reduce the image.
Four 
Directional 
Select Keys
Use    to navigate through the menus.
MenuDisplay or exits the on-screen display menus for 
projector.    
						

							
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User Controls

ClearClear your selection.
EnterConfirm your item selection.
Source LockSelect auto detection all connector ports or lock 
current connector port. (See page 30 for more) 
VideoChoose composite video source.
S-VideoChoose S-Video source.
VGA1Choose primary VGA-In source.
VGA2Choose secondary VGA-In or SCART source.
DVIChoose DVI-D source.   
						

							
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User Controls

The Projector has multilingual On Screen Display menus that 
allow you to make image adjustments and change a variety of 
settings. The projector will automatically detect the source. 
How to Operate 
1. 
To open the OSD menu, press “Menu” on the Remote Control or 
Control Panel.
2. When OSD is displayed, use   keys to select any item in the 
main menu.  While making a selection on a particular page, press 
 key to enter sub menu.
3. Use   keys to select the desired item and adjust the settings by 
  key.  
4. Select the next item to be adjusted in the sub menu and adjust as 
described above.   
5. Press “Menu” to confirm, and the screen will return to the main 
menu.
6. To exit, press “Menu” again.  The OSD menu will close and the 
projector will automatically save the new settings.
On Screen Display Menus
Main Menu
Sub MenuSetting  
						

							
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User Controls

Menu Tree   
						

							
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User Controls

 Display Mode
There are many factory presets optimized for various types of im-
ages.
 PC: For computer or notebook. (brightest image)
 Photo: For optimum colour at high brightness.
 Video: For playing video in a bright environment.
 sRGB: For standard PC colour. (best colour reproduction)
 User: Memorize user’s settings.
  Brightness
Adjust the brightness of the image.
 Press the  to darken image.
 Press the  to lighten the image.
 Contrast
The contrast controls the degree of difference between the lightest 
and darkest parts of the picture. Adjusting the contrast changes the 
amount of black and white in the image.
 Press the  to decrease the contrast.
 Press the  to increase the contrast.
  White Peaking
Use the white peaking control to set the white peaking level of DMD chip. 0 stands for minimal peaking, and 10 stands for maxi-mum peaking.  If you prefer a brighter image, adjust towards the maximum setting.  For a smooth and more natural image, adjust towards the minimum setting.
Image-I    
						

							
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User Controls

 Colour Temperature
Adjusts the colour temperature. At higher temperature, the screen 
looks colder; at lower temperature, the screen looks warmer.
Each display mode has its own colour temperature and can memo-
rize user’s selection. For example:
Display modePCPhotoVideosRGBUser
Colour Temp.sRGBLowUserHighMid
When you adjust the colour setting item, the colour temperature 
will be set as “User” automatically. And this set “User” is \
the same 
for all display mode. (See the section of “Colour Setting” for details).
 Saturation
Adjusts a video image from black and white to fully saturated 
colour.
 Press the  to decrease the amount of saturation in the image.
 Press the  to increase the amount of saturation in the image.
  Sharpness 
Adjusts the sharpness of the image.
 Press the  to decrease the sharpness.
 Press the  to increase the sharpness.
	“Saturation” functions is only supported under Video mode.    
						

							
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User Controls

 
Colour Temperature
Adjusts the colour temperature. At higher temperature, the screen 
looks colder; at lower temperature, the screen looks warmer.
Each display mode has its own colour temperature and can memo-
rize user’s selection. For example:
Display modePCPhotoVideosRGBUser
Colour Temp.sRGBLowUserHighMid
When you adjust the colour setting item, the colour temperature 
will be set as “User” automatically. And this set “User” is \
the same 
for all display mode. (See the section of “Colour Setting” for details).
 Saturation
Adjusts a video image from black and white to fully saturated 
colour.
 Press the  to decrease the amount of saturation in the image.
 Press the  to increase the amount of saturation in the image.
  Sharpness 
Adjusts the sharpness of the image.
 Press the  to decrease the sharpness.
 Press the  to increase the sharpness.
 Frequency
“Frequency” changes the display data frequency to match the 
frequency of your computer’s graphic card. If you experience a 
vertical flickering bar, use this function to make an adjustment.
  Phase
“Phase” synchronizes the signal timing of the display with the 
graphic card. If you experience an unstable or flickering image, use 
this function to correct it.
 H. Position (Horizontal Position)
 Press the  to move the image left.
 Press the  to move the image right.
 V. Position (Vertical Position)
 Press the  to move the image down.
 Press the  to move the image up.
 Degamma
This allows you to choose a degamma table that has been fine-tuned 
to bring out the best image quality for the input.
 Aspect Ratio
Use this function to choose your desired aspect ratio.
 4:3 : The input source will be scaled to fit the projection screen. 
 16:9 : The input source will be scaled to fit the width of the 
screen.
 Window: When a 4:3 image is bigger than a 16:9 screen, select the “Window” mode to fit the image onto the screen without changing the projection distance.
Image-II
	“Frequency”, “Phase”, “H. position” and “V. position” functions are only supported under Computer mode.     
						

							
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 LBX: This format is for non-16x9, letterbox source and for users 
who use external 16x9 lens to display 2.35:1 aspect ratio using 
full resolution. 
Input Signal
Display area
Picture area
Display on Screen
	Ver. Shift (16:9): Image Position at window mode will also be moved accordingly.
 Ver. Shift (16:9)
Adjust the image position up or down, when you select the aspect 
ratio of 16:9.
 Press the  to move the image down.
 Press the  to move the image up.    
						

							
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User Controls

 Colour
 Full Range: Adjust the Red, Green and Blue color for all screen. 
 Enhance Individual: Adjust the Red, Green, Blue, Yellow, Cyan 
and Magenta colors for advanced adjustment of the individual 
colors.
Colour 
PC
ULMHS
Photo
ULMHS
Video
ULMHS
sRGB
ULMHS
User
ULMHS
From The Same Colour Setting
When you adjust the colour setting item, the colour temperature 
will be set as “User” automatically. And this set “User” is \
the same 
for all display mode. For example: 
+ Red- RedFull Range: + RedEnhance Red      
IconColour Temp.
LLow
MMid
HHigh
SsRGB
UUser  
						

							
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Different color setting will be memorized at 4 different source 
groups. But they will be same under same source. 
DVI/VGA
Component-p (480p/576p/720p/1080i)
Component-i (480i/576i)
Video / S-Video
When we adjust color setting the current color temperature will be 
memorized before it auto switch to “User”. Because the memorized 
color temperature will be a base of “User”. For example:
1.) Colour temp. is High.
2.) User creates his favorite color based on “High” setting of co\
lour 
temperature. So when user switches colour temperature to “User”, 
will find the image color temperature close to “High”.