BenQ Sp830/sp831 Digital Projector User Manual

Operation 31
Using the menus
The projector is equipped with multilingual On-Screen Display (OSD) menus for making 
various adjustments and settings.
Below is the overview of the OSD menu.
To use the OSD menus, please set the OSD menu to your familiar language first.
1. Press MENU on the projector or remote 
control to turn the OSD menu on.
2. Use  /  to highlight the System Setup 
menu.3. Press  to highlight Language and 
press  /  to select a preferred 
language.
4. Press MENU once or EXIT twice* 
on...

32 Operation
Securing the projector
Using a security cable lock
The projector has to be installed in a safe place to prevent stealing. If not, purchase a lock, 
like Kensington lock, to secure the projector. You can locate a Kensington lock slot on the 
rear side of the projector. See item 26 on page 11 for details. 
A Kensington security cable lock is usually the combination of key(s) and lock. Refer to the 
lock’s documentation about how to use it.
Utilizing the password function
For security purposes...

Operation 33
If you forget the password
If the password function is activated, you will be asked 
to enter the six-digit password every time you turn on 
the projector. If you enter the wrong password, the 
password error message as pictured to the right displays 
lasting for three seconds, and the Input Password page 
follows. You can retry by entering another six-digit 
password, or if you did not record the password in this 
manual, and you absolutely do not remember it, you 
can use the password...

34 Operation7. You have successfully assigned a new password to 
the projector. Remember to enter the new 
password next time the projector is started.
8. To leave the OSD menu, press MENU.
Disabling the password function
To disable password protection, go back to the 
Advanced Setup > Password > Password menu. 
Highlight Password and select Off by pressing  /. 
The message Input Password displays. Enter the 
current password.
• If the password is correct, the OSD menu 
returns to the Password page w ith...

Operation 35
Switching input source
The projector can be connected to multiple devices at 
the same time. When starting up, the projector 
automatically search for the available signals.
Be sure the Auto Source Search function in the System 
Setup menu is On (which is the default of this 
projector) if you want the projector to automatically 
search for the signals.
You can also manually cycle through the available input 
sources.
1. Press SOURCE on the projector or remote 
control. The source selection...

36 Operation
Adjusting the projected picture
Adjusting the projection angle
The projector is equipped with 2 quick-release 
adjuster feet. These adjusters change the picture 
height and projection angle.
To adjust the projector, slightly lift the front of 
the projector and press and hold the quick-
release buttons on the both sides near bottom 
until the picture is positioned where you want it.
To retract the foot, hold up the front of the 
projector while pressing the quick-release 
buttons, then...

Operation 37
Correcting picture distortion
Correcting two-dimensional keystone
Keystoning occurs when the projector is not perpendicular to the screen and is where the 
projected picture displays visible as a trapezoid shape like either of the following:
• Two parallel sides (left and right, or top and bottom) but is noticeably wider on either 
side.
• No parallel sides.
To correct the pictures shape, you can perform the following steps.
1. Adjust the projection angle. Move the projector to be in front...

38 Operation
Correcting pincushion distortion and barrel distortion
Your projected picture may suffer from pincushion or barrel distortions due to the curved 
projection surface. 
•Pincushion distortion
The horizontal and vertical lines that do not go through the center of the picture bend 
inwards toward the center of the picture. The distortion is most noticeable at the edges 
of the picture.
•Barrel distortion
The horizontal and vertical lines that do not go through the center of the picture bend...

Operation 39
Selecting the aspect ratio
The aspect ratio is the ratio of the picture width to the 
picture 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 picture output to a different aspect 
than that of the picture input source.
To change the projected picture ratio (no matter what 
aspect the source is):
• Using...

40 Operation2.Anamorphic: Scales a picture so that it is displayed 
in the center of the screen using 1280 x 720 pixels. 
This may alter the projected aspect, depending 
upon the original aspect of the source image. 
Anamorphic is most suitable for images which are 
already in a 16:9 aspect, like high definition TV, as it 
displays them without aspect alteration.
3.Fill: Resizes the picture to the full projection area. 
1280 x 768 pixel is used without maintaining the 
original aspect ratio. This is most...