Optoma Projector Ep1690 User Manual

							
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User Controls

Image
 Mode
There are many factory presets optimized for various types of im-
ages.
Cinema: For home theater.
Bright
TV
sRGB: For Standard PC color (best color reproduction).
User: Memorize user’s settings.
 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.
 Brightness
Adjust the brightness of the image.
Press the  to darken image.
Press the  to lighten the image.
 Color
Adjusts a video image from black and white to fully saturated 
color.
Press the  to decrease the amount of color in the image.
Press the  to increase the amount of color in the image.
“Color” function is only supported under 
Video mode.  
						

							
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 Tint 
Adjusts the color balance of red and green.
Press the  to increase the amount of green in the image.
Press the  to increase the amount of red in the image.
 Sharpness
Adjusts the sharpness of the image.
Press the  to decrease the sharpness.
Press the  to increase the sharpness.
Image
“Tint” function is only supported under 
Video mode.   
						

							
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User Controls

Image / Advanced
 Degamma
This allows you to choose a degamma table that has been fine-
tuned to bring out the best image quality for the input.
Film: For home theater.
Video: For video or TV source.
Graphics: For image source.
PC: For PC or computer source.
 Brilliant Color
This adjustable item utilizes a new color-processing algorithm and 
system level enhancements to enable higher brightness while pro-
viding true, more vibrant colors in picture. The range is from “ 0 ” 
to “ 10 ”. If you prefer a stronger enhanced image, adjust toward 
the maximum setting. For a smoother, more natural image, adjust 
toward the minimum setting.
 True Vivid
This follows you to choose the degamma mode and enhancements 
to enable the picture’s vividness to be significantly increased. The 
range is from “ 0 ” to “ 3 ”.
 Color Temp.
Adjust the color temperature. The range is from “ 0 ” to “ 2 ”. At 
higher temperature, the screen looks colder; at lower temperature, 
the screen looks warmer.   
						

							
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User Controls

 RGB/Gain/Bias
Press  or  into the next menu as below and then use  or  to 
select item. Use  or  to select Red, Green, or Blue for brightness 
(Gain) and contrast (Bias). 
 Input Source
Enable or disable input sources. Press  or  into the next menu 
as below and then use  or  to select. Press “Select (Enter)” to 
finalize the selection. The projector will not search inputs that are 
de-selected.
 Color Space
Select an appropriate color matrix type from RGB or YPbPr.
Image / Advanced   
						

							
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User Controls

 Format
Use this function to choose your desired aspect ratio.
4:3: This format is for 4x3 input sources not enhanced for Wide-
screen Display.
16:9: This format is for 16x9 input sources, like HDTV and DVD  
enhanced for Widescreen Display.
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.
Native: This format displays the original image without any 
scaling.
Display
Input Signal
Display area
Picture area
Display on Screen  
						

							
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User Controls

Detail informations about LBX mode :1.   Some Letter-Box DVD contents are not enhanced for 16x9 TV, 
then image will not look right in 16:9 display. 
One can use 4:3 mode to view the correct info. 
But if the content itself is not 4:3, it will have black bars 
around the image in a 16:9 display. For this kind of content, 
you can use LBX mode to fill the image in the 16x9 display as 
much as possible. 
2.   If you use an external 16x9 lens, this LBX mode also allows 
you to watch a 2.35:1 content (include Anamorphic DVD and 
HDTV film source) that support anamorphic wide is en-
hanced for 16x9 Display in a wide 2.35:1 image. 
In this case, there are no black bars, the full lamp power and 
vertical resolution is fully utilized for maximum viewing 
effects.
Other than these two occasions, one should stay with 16:9 
and 4:3 modes for most viewing experiences. 
 Zoom
Press the  to reduce the size of an image.
Press the  to magnify an image on the projection screen.
  Masking
Masking function cover the noise on the edge of a video image. 
Masking the image to cover video encoding noise on the edge of 
video source.
Display   
						

							
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 H Image Shift
Shifts the projected image position horizontally. 
 V Image Shift
Shifts the projected image position vertically. 
 H Keystone
Press the  or  to adjust image distortion horizontally and makes 
a squarer image.
 V Keystone
Press the  or  to adjust image distortion vertically and makes a 
squarer image.
 PC Mode
This Mode is only for use when using the EP1690 with a PC signal, 
either Analogue or VGA1 via the VGA2 connector.
Wide: If your PC output is a wide screen format resolution you 
must select this setting.
Examples of Wide screen resolutions are: 854 x 480 / 1280 x 720 / 
1280 x 768 / 1920 x 1080.
Normal: If your PC output is a Normal (4:3) resolution you 
must select this setting.
Examples of Normal resolutions are: 640 x 480 / 800 x 600 / 1024 
x 768 / 1152 x 864 / 1152 x 870 (* for MAC) / 1280 x 960 / 1280 x 
1024 / 1400 x 1050.
*All supported resolutions are listed on page 39.
“PC Mode” function is only supported under 
PC signal via VGA1 or VGA2 connector.
Display  
						

							
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 Language
Choose the multilingual OSD menu. Press  or   into the sub menu 
and then use the   or  key to select your preferred language. Press 
“Select (Enter)” to finalize the selection.
 Projection
    Front-Desktop
The factory default setting.
   Rear-Desktop
When you select this function, the projector reverses the image 
so you can project behind a translucent screen.
   Front-Ceiling
When you select this function, the projector turns the image 
upside down for ceiling-mounted projection.
   Rear-Ceiling
When you select this function, the projector reverses and turns 
the image upside down at same time. You can project from 
behind a translucent screen with ceiling mounted projection.
 Display Type
Choose the display type as 16:9 (1280 x 720 ) or 16:10 (1280 x 768 ).
Setup   
						

							
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 Signal
Phase: Synchronizes the signal timing of the display with the 
graphics card. If you experience an unstable or flicker-
ing image, use this function to correct it.
Frequency : Changes the display data frequency to match the 
frequency of your computer’s graphic card. When 
you experience a vertical flickering bar, use this 
function to make an adjustment.
H. Position: Adjusts the horizontal position.
V. Position: Adjusts the vertical position.
 Mute
Choose the “On” to turn mute on.
Choose the “Off” to turn mute off. 
 Volume
Press  to decrease the volume.
Press  to increase the volume.
 Projector ID
Allows RS232 control of an individual projector. Range 01~99.
Setup  
						

							
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 Menu Location
Choose the menu location on the display screen.
 Source Lock
When this function is turned off, the projector will search for 
other signals if the current input signal is lost. When source lock 
is turned on, it will “Lock” the current source channel before you 
press “Source Lock” button on remote control for next channel.
 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.
 Auto Power Off (min)
Sets the interval of power-off of the system, if there is no signal 
input. (In minutes)
 Brite Mode
Choose “Off” to dim the projector lamp which will lower power 
consumption, extend the lamp life and reduce noise. Choose ”On” 
to return normal mode.
Options