ViewSonic Projector PJD7820HD User Manual

 26
Correcting keystone
Keystoning refers to the situation where the projected image is noticeably wider at either the 
top or bottom. It occurs when the projector is not perpendicular to the screen.
To correct this, besides adjusting the height of the projector, you will need to manually 
correct it following one of these steps.
• Using the remote control
Press  /  on the projector or remote control to 
display the Keystone correction page. Press   to 
correct keystoning at the top of the image. Press...

 27
Selecting the aspect ratio
The aspect ratio is the ratio of the image width to the image height. Most analog TV and 
computers are in 4:3 ratio, and digital TV and DVDs are usually in 16:9 ratio.
With the advent of digital signal processing, digital display devices like this projector can 
dynamically stretch and scale the image output to a different aspect than that of the image 
input signal.
To change the projected image ratio (no matter what aspect the source is):
• Using the remote control
1....

 28
About the aspect ratio
In the pictures below, the black portions are inactive areas and the white portions are active 
areas. OSD menus can be displayed on those unused black areas.
1.Auto: Scales an image proportionally to fit the 
projectors native resolution in its horizontal 
width. This is suitable for the incoming image 
which is neither in 4:3 nor 16:9 and you want to 
make most use of the screen without altering the 
images aspect ratio.
2.4:3: Scales an image so that it is displayed in the...

 29
Optimizing the image
Selecting a picture mode
The projector is preset with several predefined picture modes so that you can choose one to 
suit your operating environment and input signal picture type.
To select an operation mode that suits your need, you can follow one of the following steps.
• Press MODE/ENTER on the projector or Color Mode on the remote control 
repeatedly until your desired mode is selected.
•Go to the PICTURE > Color Mode menu and press  /  to select a desired mode.
Picture...

 30
4.Movie mode: Is suitable for enjoying dark movies or DVD movies best viewed in a 
blackened (little light) home cinema or lounge room environment.
5.Dynamic Movie mode: Is suitable for enjoying dark movies or DVD movies best 
viewed in a blackened (little light) home cinema or lounge room environment. In 
addition, the projector will optimize the image quality using the dynamic Movie 
function in accordance with the projected contents.
It takes some time to initiate this function. Make sure the...

 31 Adjusting Brightness
Highlight the PICTURE > Brightness menu and press  /.
The higher the value, the brighter the image. And the 
lower the setting, the darker the image. Adjust this 
control so the black areas of the image appear just as 
black and that detail in the dark areas is visible.
Adjusting Contrast
Highlight the PICTURE > Contrast menu and press  / .
The higher the value, the greater the contrast. Use this 
to set the peak white level after you have previously 
adjusted the Brightness...

 32
Gamma refers to the relationship between input source and picture brightness.
Selecting a Color Temperature
Highlight the PICTURE > Advanced > Color Temperature menu and press  / .
The options available for color temperature* settings vary according to the signal type 
selected.
1.T1: With the highest color temperature, T1 makes the image appear the most bluish 
white than other settings.
2.T2: Makes images appear bluish white.
3.T3: Maintains normal colorings for white.
4.T4: Makes images appear...

 33
Please refer to the illustration to the right for 
how the colors relate to each other.
For example, if you select Red and set its 
range at 0, only pure red in the projected 
picture will be selected. Increasing its range 
will include red close to yellow and red close 
to magenta.
5. Press  to highlight Saturation and adjust 
its values to your preference by pressing  /
. Every adjustment made will reflect to the 
image immediately.
For example, if you select Red and set its 
value at 0, only the...

 34
Setting the presentation timer
Presentation timer can indicate the presentation time on the screen to help you achieve 
better time management when giving presentations. Follow these steps to utilize this 
function:
1. Press Timer on the remote control to access the Presentation Timer menu or go to 
the SYSTEM SETTING: ADVANCED > Presentation Timer menu and press 
MODE/ENTER to display the Presentation Timer page.
2. Highlight Timer Period and decide the time period by pressing  / . The length of...

 35
Hiding the image
In order to draw the audiences full attention to the presenter, you can use   on the 
projector or Blank on the remote control to hide the screen image. Press any key on the 
projector or remote control to restore the image. The word BLANK appears at the lower 
right corner of the screen while the image is hidden.
You can set the blank time in the 
SYSTEM SETTING: BASIC > Blank Timer menu to 
let the projector return the image automatically after a period of time when there is no...