BenQ CP220 user manual Obtaining a preferred projected image size

Page 18

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.

The maximum (native) resolution of the projector is 1024 x 768 pixels, which is a 4 to 3 aspect ratio (expressed as 4:3). To be able to project a complete 16:9 (widescreen) aspect ratio image, the projector can resize and scale a widescreen image to the projector's native aspect width. This will result in a proportionally smaller height equivalent to 75% of the projector's native aspect height.

16:9 aspect image scaled to a 4:3 aspect dis-

4:3 aspect image in a 4:3 aspect display area

play area

Thus, a 16:9 aspect image will not utilize 25% of the height of a 4:3 aspect image displayed by this projector. This will be seen as darkened (unlit) bars along the top and bottom (vertical 12.5% height respectively) of the 4:3 projection display area whenever displaying a scaled 16:9 aspect image in the vertical centre of the 4:3 projection display area.

When determining the position of your projector, you should consider its intended use and input signal aspect ratios. All inputs (other than component Video being fed a 16:9 aspect signal) will display in a 4:3 aspect ratio (and will require an additional 33% display height than that of the scaled 16:9 aspect image projection area).

IMPORTANT: Do not select a permanent projector position based upon a 16:9 projection if you will ever need to select an input (other than composite Video being fed a 16:9 aspect signal).

The projector should always be placed horizontally level (like flat on a table), and positioned directly perpendicular (90° right-angle square) to the horizontal centre of the screen. This prevents image distortion caused by angled projections (or projecting onto angled surfaces).

The modern digital projector does not project directly forward (like older style reel-to-reel film projectors did). Instead, digital projectors are designed to project at a slightly upward angle above the horizontal plane of the projector. This is so that they can be readily placed on a table and will project forward and upwards onto a screen positioned so that the bottom edge of the screen is above the level of the table (and everyone in the room can see the screen).

If the projector is mounted on a ceiling, it must be mounted upside-down so that it projects at a slightly downward angle.

You can see from the diagram, that this type of projection causes the bottom edge of the projected image to be vertically offset from the horizontal plane of the projector. When ceiling mounted, this refers to the top edge of the projected image.

If the projector is positioned further away from the screen, the projected image size increases, and the vertical offset also increases proportionately.

When determining the position of the screen and projector, you will need to account for both the projected image size and the vertical offset dimension, which are directly proportional to the projection distance.

BenQ has provided a table of 4:3-aspect-ratio screen sizes to assist you in determining the ideal location for your projector. There are two dimensions to consider, the perpendicular horizontal distance from the centre of the screen (projection distance), and the vertical offset height of the projector from the horizontal edge of the screen (offset).

12 Positioning your projector

Page 17 Page 19
Image 18
Page 17 Page 19
Contents Welcome Copyright DisclaimerTable of contents Switching input signal Adjusting the projected image Iv Table of contentsTable of contents Supported timing for Component-YPbPr inputMemo Vi Table of contents Important safety instructions Safety Instructions Bedding or any other soft surface Safety Instructions Projector features IntroductionIntroduction Shipping contents Rear side Projector exterior viewFront / upper side Lower/ Side viewProjector Power indicator light See Indicators on page 42 for detailsControls and functions Keystone / Left Keystone / RightTurns the projector on or off Remote controlKeystone See Up, Down Left, RightOperating the projector from Remote control effective rangeReplacing the remote control battery Front RearChoosing a location Safety instructions for ceiling mounting of the projectorPositioning your projector Floor frontObtaining a preferred projected image size Positioning your projector 1219 Maximum zoom Minimum zoomScreen Center of lens Projection distance 1500Connection Connecting a computer or monitorConnecting a computer ConnectionConnecting a monitor Connecting Video source devices Best video qualityConnecting a Component Video source device 1080i 50/ 60 HzConnecting an S-Video source device Settings. See Mute Off and Volume 5 on page 35 for detailsConnecting a composite Video source device Start up Plug the power cord into the projector and into a wallOperation OperationUtilizing the password function Setting a passwordIf you forget the password Changing the password Switching input signalEntering the password recall procedure Closing the password functionAuto-adjusting the image Adjusting the projected imageAdjusting the projection angle Fine-tuning the image size and clarityOptimizing the image Correcting keystoneSelecting an application mode PC Signal InputOther adjustments Adjusting brightnessOperating in a high altitude environment Current StatusFreezing the image Hiding the imageRemote paging operations Personalizing the projector menu displayDisconnect the power cord from the wall socket Shutting down the projectorMenu operation Menu systemSave the setting Using the menusOn the remote control to leave Right on the projector or Press Exit on the projectorPicture menu Pro-Picture menu Setting menu Advance menu Information menu ResolutionMode Equivalent SourceMaintenance Care of the projectorLamp information Calculation of lamp hourReplacing the lamp Resetting the lamp counter Power indicator light is flashing during powering up Temperature informationIndicators Projector is under normal operationProjector needs 90 seconds to cool down. Or Please contact your dealer for assistanceMake sure that it is switched on TroubleshootingPlug the power cord into the AC inlet on Lens cover is not open Slide open the lens coverSpecifications Projector specificationsSupported timing for Component-YPbPrinput Timing chartSupported timing for PC input Supported timing for Video and S-Video inputsDimensions Unit mm SpecificationsWarranty Limited WarrantyEEC statement Regulation StatementsFCC statement MIC statement

CP220 specifications

The BenQ CP220 is a robust and reliable projector designed for educational and business environments. This model is renowned for its exceptional image quality, ensuring that presentations are both clear and engaging. Equipped with DLP (Digital Light Processing) technology, the CP220 utilizes a high-brightness lamp that provides vivid colors and sharp details. With a brightness rating of 2500 ANSI lumens, it excels in various lighting conditions, making it suitable for both small and large venues.

One of the standout features of the BenQ CP220 is its native XGA resolution of 1024x768 pixels, which allows for detailed display of text and images. This resolution is particularly beneficial for presenting high-definition content, ensuring that every detail is captured and displayed accurately. Additionally, the projector supports a range of resolutions and aspect ratios, making it versatile for differing media formats.

The CP220 is designed with user convenience in mind. It features quick and easy setup options, including automatic keystone correction, which ensures that images are perfectly aligned, regardless of the projector's angle. This feature is particularly useful in dynamic environments where quick adjustments are often needed. Furthermore, the projector offers a multitude of connectivity options, including VGA, USB, and HDMI ports, allowing users to connect a variety of devices seamlessly.

In terms of durability and maintenance, the BenQ CP220 boasts a long lamp life of up to 4,500 hours in economy mode. This means less frequent lamp replacements and lower overall operating costs, which is an important consideration for educational institutions and businesses looking to maximize their investments. The projector's efficient cooling system also helps to ensure longer operational periods without overheating.

Overall, the BenQ CP220 stands out for its combination of performance, versatility, and user-friendly features. Its high brightness, excellent resolution, and ease of use make it an ideal choice for any setting that demands reliable and high-quality projector performance. Whether for classroom instruction, corporate presentations, or multimedia displays, the CP220 is a dependable tool that enhances communication and engagement. With its advanced technologies and thoughtful design, the BenQ CP220 continues to be a favored choice among educators and professionals alike.
Top Page Image Contents