Samsung Syncmaster 940b Quick Start Guide
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Preset Timing Modes If the signal transferred from the computer is the same as the following Preset Timing Modes, the screen will be adjusted automatically. However, if the signal differs, the screen may go blank while the power LED is on. Refer to the video card manual and adjust the screen as follows. Table 1. Preset Timing Modes Display Mode Horizontal Frequency (kHz) Vertical Frequency (Hz) Pixel Clock (MHz) Sync Polarity (H/V) IBM, 640 x 350 31.469 70.086 25.175 +/- IBM, 640 x 480 31.469 59.940 25.175 -/- IBM, 720 x 400 31.469 70.087 28.322 -/+ MAC, 640 x 480 35.000 66.667 30.240 -/- MAC, 832 x 624 49.726 74.551 57.284 -/- MAC, 1152 x 870 68.681 75.062 100.00 -/- VESA, 640 x 480 37.500 75.000 31.500 -/- VESA, 640 x 480 37.861 72.809 31.500 -/- VESA, 800 x 600 35.156 56.250 36.000 +/+ VESA, 800 x 600 37.879 60.317 40.000 +/+ VESA, 800 x 600 46.875 75.000 49.500 +/+ VESA, 800 x 600 48.077 72.188 50.000 +/+ VESA, 1024 x 768 48.363 60.004 65.000 -/- VESA, 1024 x 768 56.476 70.069 75.000 -/- VESA, 1024 x 768 60.023 75.029 78.750 +/+ VESA, 1152 x 864 67.500 75.000 108.00 +/+ VESA, 1280 x 1024 63.981 60.020 108.00 +/+ VESA, 1280 x 1024 79.976 75.025 135.00 +/+ Horizontal Frequency The time to scan one line connecting the right edge to the left edge of the screen horizontally is called the Horizontal Cycle and the inverse number of the Horizontal Cycle is called the Horizontal Frequency. Unit: kHz Vertical Frequency Like a fluorescent lamp, the screen has to repeat the same image many times per second to display an image to the user. The frequency of this repetition is ca lled the Vertical Frequency or Refresh Rate. Unit: Hz
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PHILIPPINES 1800-10-SAMSUNG (7267864)http://www.samsung.com/ph SINGAPORE 1800-SAMSUNG (7267864) http://www.samsung.com/sg THAILAND 1800-29-3232, 02-689-3232 http://www.samsung.com/th TAIWAN 0800-329-999 http://www.samsung.com/tw VIETNAM 1 800 588 889 http://www.samsung.com/vn Middle East & Africa SOUTH AFRICA 0860 7267864 (SAMSUNG) http://www.samsung.com/za U.A.E 800SAMSUNG (7267864) 8000-4726 http://www.samsung.com/mea Terms Dot Pitch The image on a monitor is composed of red, green and blue dots. The closer the dots, the higher the resolution. The distance between two dots of the same color is called the Dot Pitch. Unit: mm Vertical Frequency The screen must be redrawn several times per seco nd in order to create and display an image for the user. The frequency of th is repetition per second is called the Vertical Frequency or Refresh Rate. Unit: Hz Example : If the same light repeats itself 60 ti mes per second, this is regarded as 60 Hz. Horizontal Frequency The time to scan one line connecting the right ed ge to the left edge of the screen horizontally is called the Horizontal Cycle. The inverse number of the Horizontal Cycle is called Horizontal Frequency. Unit: kHz Interlace and Non-Interlace Methods Showing the horizontal lines of the screen from the top to the bottom sequentially is called the Non-Interlace method while showing odd lines and then even lines in turn is called the Interlace method. The Non-Interlace method is used for the majority of monitors to ensure a clear image. The Interlace method is the same as that used in TVs. Plug & Play This is a function that provides the best quality screen for the user by allowing the computer and the monitor to exchange information automatically. This monitor follows the international standard VESA DDC for the Plug & Play function. Resolution The number of horizontal and vertical dots used to compose the screen image is called the resolution. This numb er shows the accuracy of the display . A high resolution is good for performing multiple tasks as more image information can be shown on the screen. Example : If the resolution is 1280 x 1024 , this means the screen is composed of 1280 horizontal dots (horizontal resolution) and 1024 vertical lines (vertical resolution). For Better Display
1. Adjust computer resolution and screen injection rate (refresh rate) oncomputer as described
below to enjoy the best quality of picture. You can have an uneven quality of picture in the
screen if the best quality of picture is not provided in TFT-LCD.
{Resolution: 1280 x 1024
{Vertical frequency (refresh rate): 60 Hz
2. TFT LCD panels manufactured by using advanced semiconductor technology with precision of 1ppm (one millionth) above are used for this product. But the pixels of RED, GREEN,
BLUE and WHITE color appear to be bright so metimes or some black pixels may be seen.
This is not from bad quality and you can use it without any problelms.
{For example, the number of TFT LCD sub pixels contained in this product are
3,932,160.
3. When cleaning the monitor and the panel outside, please apply the recommended small amount of cleaner by using a so ft cloth to polish. Do not force the LCD area but rub softly.
If excessive force is applied, you may stain it.
4. If you are not satisfied with the picture quality, you can get better quality of picture by performing the auto adjustment function in display screen that is appeared as window
termination button is pressed.
If theres still noise after the automatic ad justment, use the FINE/COARSE adjustment
function.
5. When viewing a fixed screen fo r an extended period of time, residual image or blurriness
may appear.
Change the mode to energy sa ving mode or set a screensaver to a changing picture when
away from the monitor for an extended period of time.
Authority
Information in this document is subject to change without notice.
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PRODUCT INFORMATION (Image Retention Free) LCD Monitors and TVs may have image retention when switching from one image to another especially after displaying a stationary image for a long time. This guide is to demonstrate correct usage of LC D products in order to protect them from Image retention. WarrantyWarranty does not cover any damage caused by image retention. Burn-in is not covered by the warranty. What is Image retention ? During normal operation of a LCD panel, pixel image retention doesnt occur. However, if the same image is displayed for a long time, a slight difference in electric charge accumulates between the two electrodes which encase the liquid crystal. This may cause the liquid crystal to build up in a certain areas of the display. Thus, the previous image is retained when switching to a new video image. All display products, including LCD,are subject to image retention. This is not a product defect. Please follow the suggestions below to protect your LCD from image retention Power Off, Screen Saver, or Power Save Mode Ex) zTurn the power off when using a stationary pattern. zUse a Screen saver if possible zSet the Monitor to power off with the PC Display Properties Power Scheme. - Turn the power off for 4 hours after 20 hours in use - Turn the power off for 2 hours after 12 hours in use - Screen saver in one color or a moving image is recommended. Suggestions for specific applications Ex) Airports, Transit Stations, Stock Markets, Banks, and Controlling Systems We recommend that you follo w set up of your display system program as below: Display Information together with Logo or Moving image cycle. Ex) Cycle : Display Information for 1 hour followed by a Display Logo or moving image for 1 minute. Change the Color Information periodically(Use 2 different colors). Ex) Rotate the Color Information with 2 colors every 30 minutes. Avoid using a combination of charac ters and background color with large difference in luminance. Avoid using Grey colors, which can cause Image retention easily. zAvoid: Colors with big difference in luminance (Black & White, Grey) Ex) zRecommended settings: Bright colors wit h little difference in luminance - Change the characters color and ba ckground color every 30 minutes Ex) - Every 30 minutes, change the characte rs with movement.
Ex) The best way to protect your monitor from Image retention is to set your PC or S ystem to operate a Screen Saver program when you are not using it. Image retention may not occur when a LCD panel is operated under normal conditions. Normal conditions are defined as continuously changing video patterns. When the LCD panel is operated for a long time with a fixed pattern (-over 12 hours-), there may be slight difference in voltage between electr odes that work the liquid crystal (LC) in a pixel. The voltage difference between electrodes increases with time, forcing the liquid crystal to lean. When this occurs, the previous image may be seen when the pattern is changed. To prevent this, the a ccumulated voltage differe nce must be decreased. Our LCD Monitor satisfies ISO13406-2 Pixel fault Class II
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