BenQ MW82IST user manual Obtaining a preferred projected image size, Projection dimensions

Page 14

Obtaining a preferred projected image size

The distance from the projector lens to the screen, the zoom setting, and the video format each factors in the projected image size.

Projection dimensions

Refer to "Dimensions" on page 55 for the center of lens dimensions of this projector before calculating the appropriate position.

Screen size

H

W

Vertical offset

Screen

Center of lens

Projection distance

The screen aspect ratio is 16:10 and the projected picture is 16:10

	Screen size				Vertical
Diagonal		W	H	Distance from screen (mm)	offset
Inch	mm	(mm)	(mm)		(mm)
80	2032	1723	1077	842	54

100	2540	2154	1346	1053	67

120	3048	2585	1615	1263	81

150	3810	3231	2019	1579	101

180	4572	3877	2423	1895	121

200	5080	4308	2692	2105	135

220	5588	4739	2962	2316	148

240	6096	5169	3231	2526	162

270	6858	5816	3635	2842	182

300	7620	6462	4039	3158	202

For example, if you are using an 120-inch screen, the recommended projection distance is 1263 mm and the vertical offset is 18 mm.

If your measured projection distance is 2.5 m (2500 mm), the closest match in the "Distance from screen (mm)" column is 2526 mm. Looking across this row shows that a 240'' (about 6.1 m) screen is required.

All measurements are approximate and may vary from the actual sizes.

BenQ recommends that if you intend to permanently install the projector, you should physically test the projection size and distance using the actual projector in situ before you permanently install it, so as to make allowance for this projector's optical characteristics. This will help you determine the exact mounting position so that it best suits your installation location.

14 Positioning your projector

Image 14

Contents MW821ST Table of contents Important safety instructions Safety InstructionsSafety Instructions 3000 m Feet Ceiling mounting the projector Projector features IntroductionShipping contents Projector exterior view Front/upper side Rear/lower sideControls and functions Remote control Remote control effective range Replacing the remote control batteriesFront Table Positioning your projectorChoosing a location Front CeilingProjection dimensions Obtaining a preferred projected image sizeConnection ConnectionPlaying sound through the projector Connecting video source devicesConnecting audio About the microphone input DeviceOperation Starting up the projectorAuto-adjusting the image Adjusting the projected imageAdjusting the projection angle Fine-tuning the image clarityCorrecting keystone Using the menus Below is the overview of the OSD menuSetting a password Using a security cable lockUtilizing the password function If you forget the passwordDisabling the password function Entering the password recall procedureChanging the password Switching input signal Changing Color SpaceMagnifying and searching for details Selecting the aspect ratioAbout the aspect ratio Setting the User 1/User 2 mode Using Wall ColorSelecting a picture mode Go to the Picture Picture Mode menuSelecting a Color Temperature Fine-tuning the image quality in user modesAdjusting Brilliant Color Setting a preferred color temperature 3D Color ManagementSelection Description Setting the presentation timerResetting current or all picture modes Freezing the image To cancel the timer, perform the following stepsRemote paging operations Top-Left Bottom-Left Top-Right Bottom-RightLocking control keys To activate the High Altitude ModeHiding the image Operating in a high altitude environmentTurning off the Power On/Off Ring Tone Adjusting the soundUsing the test pattern Using the teaching templates To select Blackboard or WhiteboardDirect power off Shutting down the projectorMain menu Sub-menu Options Menu operationMenu system Bottom-Right/Bottom-Left Sleep Timer Disable/30 min/1 hr/2 hr/3 hr/4 Hr/8 hr/12 hrBasic Min/25 min/30 minIP Address Main menu Sub-menu Options System Setup AdvancedEquivalent Lamp Hour Color SystemDescription of each menu Color Temperature Picture ModeTemperature Fine Tuning 3D ColorSettings TimerInstallation SearchRemote System Setup Basic menu Function DescriptionOperation ReceiverAudio System Setup Advanced menu Function Description HighAltitude LampStandby System Setup Advanced menu Function DescriptionReset All NetworkStatus CurrentSystem Maintenance Care of the projectorExtending lamp life Lamp informationGetting to know the lamp hour Timing of replacing the lamp Status MessageReplacing the lamp Connect the power and restart the projector Resetting the lamp timer Lamp events IndicatorsLight Status & Description Power events Thermal eventsTroubleshooting Specifications Projector specificationsDimensions Wall mount installationMinimum Ceiling Height mm = f + H + b + 60 + 274+ c Wall plateTiming chart Supported timing for PC inputSupported timing for Hdmi Hdcp input KHzTiming Supported timing for Component-YP bP r inputSupported timing for Video and S-Video inputs Copyright Warranty and Copyright informationLimited warranty Disclaimer