Extron electronic IN1404XT manual Resolution and refresh rates

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Operation, cont’d

To change the output aspect ratio of most DVD players:

1.Enter the DVD player’s setup or action menu while the disc is stopped.

2.Select the 16:9 aspect ratio.

Resolution and refresh rates

Resolution and refresh rate are probably the most crucial variables for optimum image quality. Every display has an optimal or native resolution and an optimal refresh rate. These will vary, depending on:

•The type of display technology

•Whether the display has a fixed number of pixels (a native resolution)

•The size of the pixels

•The size of the display or screen

•The distance of the viewer from the screen.

For best results, set the scaler’s output resolution and refresh rate to match the capabilities of your display.

The ideal resolution must lie within the compatible range of the display. For example, some 27” to 36” presentation monitors are limited to input signals in the 30 hKz to 50 kHz range. Check the Direct View Display Cross Reference and the Projector Cross Reference in the Extron catalog or on the Extron web site (www.extron.com) for the most up-to-date compatible ranges of most displays.

CRT displays — selecting the optimum resolution

While CRT displays do not have a native resolution, they do have a “sweet spot“ for input signal resolution. When the scaler is set to output at the sweet spot of the CRT, it results in a detailed image with no visible scan lines. If the scaler is set to output below the sweet spot, the displayed image has small scan lines between the image lines. If the scaler is set to output above the sweet spot, the images lines overlap and the image loses detail because there are more lines and pixels than the display can clearly resolve. When experimenting to find the sweet spot, start with the output refresh rate set at 72 Hz and the resolution shown in the table on the next page. Then, with a critical eye, try higher and lower resolutions until you achieve a solid image with optimum image detail.

CRT displays — selecting the optimum refresh rate

CRTs tend to flicker at refresh rates below 70 Hz. To achieve a flicker-free image, try an output refresh rate of 72 Hz or 75Hz. With a critical eye, try even higher rates to see if they improve the display. In some cases, you will find that the image suddenly appears significantly improved at a higher rate such as 85 Hz.

Note that as the refresh rate increases, the horizontal scan rate also increases, placing greater bandwidth demands on the video distribution system and the display. If the bandwidth is too high, you may see a softer image because the signal exceeds the bandwidth of the distribution system and the display. An extremely high refresh rate can also create a compatibility problem in which the video signal is beyond the scan rate of the display.

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Contents Video Scaler and Switcher IN1404XTSicherheitsanleitungen Deutsch Safety Instructions EnglishConsignes de Sécurité Français Instrucciones de seguridad EspañolTable of Contents Table of Contents, cont’d IN1404XT Video Scaler and Switcher Table of Contents Iii Iv IN1404XT Video Scaler and Switcher Table of Contents One About this Manual IN1404XT Video Scaler and Switcher IntroductionIntroductiontroduction, cont’d About the ScalerTP transmission TP cable advantagesFeatures Introduction, cont’dIN1404XT Video Scaler and Switcher Introduction Introduction, cont’d Two IN1404XT Video Scaler and Switcher Installation Installationstallation, cont’dInstallation Overview Mounting the ScalerCabling and Rear Panel Views Input connectionsInstallation, cont’d Standard output connectionsTP video output connection Cable testing Termination of TP cableEqualizing pair skew Configuration Power connectionRS-232 connection Installation, cont’d Three Operationeration, cont’d Front Panel Controls and IndicatorsIN1404XT Video Scaler and Switcher Operation Video controlsAudio controls Menu control buttonsFront Panel Operations PowerOperation, cont’d Menu operationStatus indicators Ma i n Me nuBrightness screen Menu systemVideo menu Contrast screenVideo menu flowchart Hue screen RGB Gain screenColor Saturation screen Sharpness screenNoise Filter screen Reset Video screenGamma screen Comb/Trap selection screenTreble screen Reset Audio screen10 IN1404XT Video Scaler and Switcher Operation Balance screenInput menu Gn a l Fo rma tSignal Format screen 12 IN1404XT Video Scaler and Switcher OperationAspect Ratio screen Auto Switching screen 10 Aspect ratio examplesInput Labels screen Phase screen14 IN1404XT Video Scaler and Switcher Operation Horizontal Tracking screenReset Input screen Resolution screenOutput menu Seamless Mode screen 16 IN1404XT Video Scaler and Switcher OperationRefresh Rate screen Size screen Position screenSync Format screen 18 IN1404XT Video Scaler and Switcher Operation Reset Output screenFactory Reset screen Blue Screen screenReset RS-232 screen Baud Rate screenDelimiters screen Seamless switching operation Enabling seamless switchingSetting up seamless switching 20 IN1404XT Video Scaler and Switcher OperationPower-up shortcuts Setting up a DVD sourceOptimizing the Video 22 IN1404XT Video Scaler and Switcher Operation Resolution and refresh ratesCRT displays selecting the optimum resolution CRT displays selecting the optimum refresh rateCRT Displays 24 IN1404XT Video Scaler and Switcher Operation Advanced Input submenu options14 Advanced input settings Input blanking adjustmentActive area adjustment 26 IN1404XT Video Scaler and Switcher Operation16 Incorrect active area setting Total pixels adjustment 28 IN1404XT Video Scaler and Switcher OperationScan Type screen Input Mode screen Optimizing the AudioTroubleshooting 30 IN1404XT Video Scaler and Switcher OperationGeneral checks Specific problems Problem Possible cause Solution No image appears32 IN1404XT Video Scaler and Switcher Operation Does not appearProblem Possible cause Solution Image is cropped 34 IN1404XT Video Scaler and Switcher Operation Cannot be increasedEdges 36 IN1404XT Video Scaler and Switcher Operation Four IN1404XT Video Scaler and Switcher Programmer’s Guide Serial Control Cable WiringCommand and Response Structure Communication ProtocolsUsing the Command/Response Table Scaler ResponsesSymbols Programmer’s Guide, cont’dSeamless switch mode Command Ascii Command Response Additional descriptionAutoswitch mode Input selectionInput video aspect ratio Output resolutionInput video type Output refresh rateBrightness ContrastRGB Gain Color saturation HueSharpness Comb/trap filter GammaNoise filter Horizontal tracking10 IN1404XT Video Scaler and Switcher Programmer’s Guide Freeze Memory presetVolume BassResets 12 IN1404XT Video Scaler and Switcher Programmer’s GuideDisable front panel Audio muteFront panel buttons Active areaBlanking Total pixels 14 IN1404XT Video Scaler and Switcher Programmer’s GuideInput mode Scan typeRedetect the input mode 16 IN1404XT Video Scaler and Switcher Programmer’s Guide AAppendix a Specifications IN1404XT Video Scaler and Switcher Reference InformationAudio Part Numbers Optional accessoriessReference Information, cont’d Included partsBNC-4 Mini HR Cable Part number Male-to-male VGA CablePre-cut cables BNC-5 Mini HR CableBNC-4 Mini HR Cable Part number Plenum BNC-5 Mini HR Cable Part number Skew-free A/V cable Part numberAssorted cables and adapters Part number Reference Information, cont’d Extron’s Warranty Extron Electronics, Asia Extron Electronics, USAExtron Electronics, Europe Extron Electronics, Japan
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