BenQ Sp830/sp831 Digital Projector User Manual

Introduction 11
Projector exterior view
1. Quick-release foot
2. Projection lens
3. Lens cap
4. External control panel
(See pages 12-13 for details.)
5. Focus ring and Zoom ring
6. Vent (cool air intake)
7. Front IR remote sensor
8. Quick-release button
9. AC power cord inlet
10. Main power switch
11. Speaker grill
12. Ceiling mounting holes
13. Lamp cover
14. RS232 control port
15. Rear IR remote sensor
16. Wired remote control port
17. Video/Audio (L/R) input 
sockets
18. Component video (YPbPr/...

12 Introduction
Controls and functions
Projector
1. Focus ring
Adjusts the focus of the projected 
picture. See Fine-tuning the picture 
size and clarity on page 36 for details.
2. Zoom ring
Adjusts the size of the picture. See 
Fine-tuning the picture size and 
clarity on page 36 for details.
3. Power indicator light
Lights up or flashes when the projector 
is under operation. See Indicators on 
page 73 for details.
4. MENU
Turns on the On-Screen Display (OSD) 
menu. When the OSD menu is 
activated,...

Introduction 13
Remote control
10. Lamp indicator light
Indicates the status of the lamp. Lights 
up when the lamp has developed a 
problem. See Indicators on page 73 
for details.
11. EXIT
Goes back to previous OSD menus, 
exits and saves menu settings. See 
Using the menus on page 31 for 
details.
12. Keystone/Arrow keys ( / ,  / )
Split Screen/Arrow keys ( / ,  /
)
Manually corrects distorted pictures 
resulting from an angled projection.
Turns the split screen function on or 
off.
When the On-Screen...

14 Introduction3. SOURCE 
Displays the source selection bar. See 
Switching input source on page 35 for 
details.
4. Keystone/Arrow keys ( / ,  / , 
/, /)
Manually correct distorted pictures 
resulting from an angled projection.
When the On-Screen Display (OSD) 
menu is activated, the keys are used as 
directional arrows to select the desired 
menu items and to make adjustments.
See Correcting picture distortion on 
page 37 and Using the menus on page 
31 for details.
5. MENU
Turns on the On-Screen...

Introduction 15 20. LASER
Emits visible laser pointer light for 
presentation purposes. See Operating the 
LASER pointer on the right for details.
21. PAGE 
 (UP) and PAGE  (DOWN)
Operate your display software program 
(on a connected PC) which responds to 
page up/down commands (like Microsoft 
PowerPoint). See Remote paging 
operations on page 56 for details.
22. DIGITAL ZOOM keys (+, -)
Magnifies or reduces the projected picture 
size. See Magnifying and Searching for 
details on the projected picture...

16 Introduction
Remote control effective range
Infra-Red (IR) remote control sensors are 
located on the front and the back of the 
projector. The remote control must be held at 
an angle within 30 degrees perpendicular to 
the projectors IR remote control sensors to 
function correctly. The distance between the 
remote control and the sensors should not 
exceed 6 meters (~ 20 feet).
Make sure that there are no obstacles between 
the remote control and the IR sensors on the 
projector that might obstruct...

Positioning your projector 17
3. Positioning your projector
Choosing a location
Your room layout or personal preference will dictate which installation location you select. 
Take into consideration the size and position of your screen, the location of a suitable power 
outlet, as well as the location and distance between the projector and the rest of your 
equipment.
The projector is designed to be installed in one of four possible installation locations. 
*To set the projector position:
1. Press MENU on...

18 Positioning your projector
Obtaining a preferred projected picture size
The distance from the projector lens to the screen, the zoom setting, and the video format, 
each factors in the projected picture size.
The projector should always be placed horizontally level (like flat on a table), and positioned 
directly perpendicular (90° right-angle square) to the horizontal center of the screen. This 
prevents picture distortion caused by angled projections (or projecting onto angled 
surfaces). 
The...

Positioning your projector 19 5. The recommended position for the projector is aligned perpendicular to the 
horizontal center of the screen, at the distance from the screen determined in step 3 
above, and offset by the value determined in step 4 above.
For example, if you are using an 120-inch, 4:3-aspect-ratio screen and the projected picture 
is 15:9, please refer to Table B2
. The average projection distance is 4133.7 mm and with a 
vertical offset of 146 mm.
How to determine the recommended screen...

20 Positioning your projector
Projection dimensions
Refer to Dimensions on page 78 for the center of lens dimensions of this projector before 
calculating the appropriate position.
When the screen aspect ratio is 16:9 and the projected picture is 16:9
Table A: The screen aspect ratio is 16:9 and the projected picture is 16:9
Screen DimensionsDistance from Screen in mmVe r t i c a l  
Offset
DiagonalHeightWidthMin length 
(max. zoom)Av e r a g eMax length 
(min. zoom)
mmFeetInchesmmmmmm
2.5 30 762 457 610...