Manuals / Apple / Computer Equipment / Computer Monitor

Apple 20Display manual 90-132, 198-260, Vertical refresh rate, Horizontal scan rate

Models: 20Display

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mControl buttons: Reset (>), Control (j), x, Brightness (¤), Contrast (O)

mAdditional picture controls available using the x button: horizontal and vertical shift, horizontal and vertical size, rotation and color uniformity, horizontal and vertical convergence, and color temperature

Active video image area

mAdjusted at the factory for the following standard modes:

Mode	Resolution	Vertical refresh rate	Horizontal scan rate
		(hertz)	(kilohertz)
VGA	640 x 480	59.95	31.47
Macintosh	640 x 480	66.7	35.0
VESA	640 x 480	75	37.5
VESA	800 x 600	75	46.9
Macintosh	832 x 624	75	49.73
Macintosh	1024 x 768	74.93	60.24
VESA	1024 x 768	75	60.02
Macintosh	1152 x 870	75	68.7
VESA	1280 x 1024	75	79.98

Input electrical requirements

m	Voltage	90-132, 198-260 V
m	Frequency	47-63 Hz
m	Power	165 W maximum

Weight

mApproximately 66 pounds (30 kilograms)

Dimensions
m	Height	474 mm ± 5 mm
m	Width	474 mm ± 5 mm
m	Depth	501.5 mm ± 5 mm

46Appendix B

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Apple 20Display manual 90-132, 198-260, Vertical refresh rate, Horizontal scan rate

Contents

Apple Multiple Scan 20 DisplayUser’s Guide K Apple Computer, Inc Contents 1 Setting Up2 Using the Display Software 3 Adjusting the PictureTips and Troubleshooting Technical InformationNotes for IBM PC-Compatible Users Appendix ACommunications regulation information FCC statementRadio and television interference DOC statement1 Setting Up Important safety instructionsWhat about electromagnetic emissions? Getting ready to set up Power jumper cordApple Multiple Scan 20 Display Monitor cableYour Apple Multiple Scan 20 Display at a glance Power button Control panelPower cord receptacle Monitor cable Service ports and switches Do not useLifting and positioning the monitor Choosing a good location for your monitorHold the front of the monitor securely To position the monitor on a table or desk, follow these steps Using more than one monitor Do you need a video card?Connecting the monitor to your computer Connecting your keyboard to the monitor 4 Tighten the thumbscrews on the connectionTurning the monitor on Installing the display software The Installer screen appears 2 Using the Display Software About the Control StripWorking with the Control Strip Changing screen resolution Other things you can do with the Monitors control panel What happens after you turn on the energy saving feature Conserving energyUsing ColorSync Using Energy Saver with a screen saverTo set up ColorSync for a specific monitor Configuring the Control Strip Showing and hiding the Control StripSetting a keyboard command to show and hide the Control Strip Changing the font in Control Strip menus Choose Control Panels from the Apple K menuDouble-click the Control Strip icon to open it Click the close box to close the control panel3 Adjusting the Picture Reset buttonIndicator lights for picture controlsAdjusting the brightness of the picture Making adjustments to the pictureAdjusting the contrast of the picture Adjusting the center of the picture When the picture is centered properly, there is an equal borderFollow these steps 1 Press and hold down the x button on the monitor until the ﬁFollow these steps Adjusting the size of the picture26 Chapter Adjusting the rotation and color uniformity of the picture Follow these stepsAdjusting the shape of the picture Follow these steps1 Press and hold down the x button on the monitor until the ﬁ Use these controlsAdjusting the convergence of the picture Selecting the color temperature 30 ChapterResetting controls to original levels Resetting brightness and contrastResetting all picture controls Resetting individual picture controlsWhile holding down the Control button , press the Reset button 4 Tips and Troubleshooting Care and cleaningTroubleshooting Protecting your monitor from theftThe monitor’s power indicator light doesn’t come on Tips and Troubleshootingm Make sure that your computer and monitor are turned on Tips and Troubleshooting No colors appear on the screenThe screen image is off center The screen image is too large or too smallYou can’t control the sound volume of a CD You don’t see the monitor resolution you wantAfter many hours of use, the screen image appears dim Over time, you experience eyestrainAfter you change the screen resolution, icons move You see two resolution options labeled 640x870 75 Hz When you change resolutions, the monitor goes blankThe monitor does not go to sleep 40 ChapterAppendix A Notes for IBM PC-Compatible Users CompatibilityYour monitor may not look exactly as shown Connecting the monitor to your IBM PC-compatible computer42 Appendix A This adapter is shipped with your monitor Using the monitor 44 Appendix AAppendix B Technical Information Vertical refresh rate 90-132, 198-260Horizontal scan rate Temperature Tilt swivel baseInterfaces Humidity noncondensingMonitor cable specifications m 15-pin miniature D-type connectorOutput signal Apple Computer, Inc 1 Infinite LoopCupertino, California 030-8886-A

Vertical refresh rate

Horizontal scan rate

90-132, 198-260 V