ViewSonic VPW450HD manual Running Hdtv, Understanding Hdtv, What is Digital Television or DTV?

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RUNNING HDTV

Understanding HDTV

What is Digital Television or DTV?

Digital TVs are televisions that can receive and display digital television broadcasts sent using any one of three following categories: HDTV (High Definition TV), EDTV (Enhanced Digital TV), and SDTV (Standard Definition TV).

What is the Difference Between HDTV, EDTV, and SDTV?

HDTV, EDTV, and SDTV are three grades of televison or displays. They reference the maximum resolution capability of a digital television or display to fully display digital broadcasts without having to “down-con- vert” the actual signal content to fit the display’s display limitations. The resolution requirements for each of the three DTV classifications and an explanation of the specifications are described below:

Vertical Res.1

Horizontal Res.2 Aspect Ratio3

Scan Method4

1080 lines

1920 dots

16:9 Wide

Interlaced

720 lines

1280 dots

16:9 Wide

Progressive

HDTV grade televisions and displays are capable of displaying a maximum of either 1080 lines using interlaced scan method or 720 lines using progressive scan method.

Vertical Res.1

Horizontal Res.2Aspect Ratio3

Scan Method4

480 lines

640 dots

4:3

Progressive

EDTV grade televisions and displays are capable of displaying a maximum of 480 lines using progressive scan method. All resolutions higher than 480 lines must be reduced to 480 lines in order to be displayed. Progressive scan method reduces flicker; however, pic- ture quality may not necessarily outperform 480 interlaced when viewed at normal view- ing distances.

Vertical Res.1

Horizontal Res.2Aspect Ratio3

Scan Method4

480 lines

640 dots

4:3

Interlaced

SDTV grade televisions and displays are capable of displaying a maximum of 480 lines using interlaced scan method. All resolutions higher than 480 lines must be reduced to 480 lines in order to be displayed.

1Vertical Resolution (Scan Lines)

Vertical scan lines refer to the number of horizontal lines a TV or display can display to create an image. As the number of lines increase, more information is displayed, resulting in better picture quality.

2Horizontal Resolution

Each horizontal line in a TV or display is made up of individual dots (pixels). The higher the number of pixels, the finer the TV picture becomes. Horizontal pixel measurements using today's technology can range from 250 for a VCR to as much as 500 for a DVD player.

3Aspect Ratio

Aspect ratio identifies the ratio of the TV screen's width over its height. A 16:9 aspect ratio refers to a wide- screen picture format, while a 4:3 refers to a standard “square” TV format.

4Scan Mode

Interlaced scanning is a method that creates a TV picture with alternating lines of information and is the cause for flickering. Progressive scanning is a method that creates a TV picture with consecutive lines of informa- tion that results in flicker-free picture quality.

12ViewSonic VPW450HD

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Contents VPW450HD Contents For Your Records Package Contents Product Features „ SRS Sound ProcessingUnderstanding Your Display Swap WideUsing Component Video Input Connecting the DisplayConnecting a DVD Player Using S-Video InputConnecting a Hdtv Decoder Set-Top Box Using RGB InputConnecting a VCR External Audio ConnectionsConnecting a PC Using RGB or DVI Video InputOperating the DISPLAY-BASICS Powering on / OFFSelecting Signal Source Adjusting Sound Volume Using MuteRunning Hdtv What is Digital Television or DTV?What is the Difference Between HDTV, EDTV, and SDTV? Understanding HdtvWhat is Down-Convert? Advanced Functions Picture-In-Picture PIP / Split ScreenPIP On/Off Input Source Selection PIP Window Position Accessing PIP and POP Modes using OSDPicture-In-Picture PIP / Split Screen Con’t PIP Window SwapWidescreen 169 Aspect Ratio Viewing Modes For 43 Aspect Ratio Square ContentFor Widescreen Content Understanding Widescreen ModesAccessing OSD Settings Menu On-Screen Display OSD SettingsAccessing Widescreen Viewing Modes using OSD Widescreen Viewing Modes Con’tSetting Sleep Timer Using Remote Control Sleep Timer SettingsSetting Sleep Timer Using OSD Sleep Timer On/OffSound Adjustments Using OSD Sound AdjustmentsSetting Output Using OSD Switching OFF Built-In SpeakersWhen Using Component 1 & 2 Inputs Signal Frequency Information DisplayWhen Using AV1 and AV2 Inputs When Using RGB & DVI InputsFor AV / S-Video Adjusting PictureAccessing Picture Adjustment Mode Geometric Adjust For Component VideoAccessing Geometric Adjust Mode For Component Video Con’tFor RGB / DVI Specifications Display Formats Pin Assignments For D-SUB Connector In / Loop OutPin Assignments For 24 Pin DVI Connector Digital Only Package Dimensions Maximum ResolutionDimensions Without Stand With Stand WeightPower Management Mode Sync Video Emission RequirementWall Mount Option Rear ViewAppendix Connecting to TV or Cable TVImportant Safety Instructions Outdoor Antenna Grounding TV / Cable TV ConnectionsRemote Control Changing Channels Using Remote ControlUsing Front Panel & OSD Menu Using Quick View on Remote Control TV Tuner SettingsAccessing the TV Settings Menu Quick ViewFavorite Channel and Channel Lock Settings Favorite Channel / Channel LockParental Guide Table Accessing V-ChipParental Guide Changing the Passcode Passcode SettingOverview Adjusting Picture For TVSymptom Possible Cause Remedy Troubleshoot Common ConditionsCustomer Support = FAXViewsonic Plasma Display Limited WarrantyHow to get service Limitation of implied warrantiesUSA Important Safety Instructions Risk of Electric ShockCabinet Cleaning Instructions Cleaning and MaintenanceFront Panel Cleaning Instructions Avoid Still ImagesCompliance Information for Canada ViewSonic VPW450HD ViewSonic Corporation