Acer AL2002 AL2002 Service Guide - Page 11

10 Go to cover page Preset Timing Chart No Chroma Timing 1 102 2 103 3 109 4 116 5 110 6 118 7 141 8 126 9 179 10 131 11 333 Timing Modes, FV(Hz) VGA VGA VESA VESA VESA VESA VESA MAC SXGA SXGA WSXGA 720 x 400 70Hz 640 x 480 60Hz 640 x 480 75Hz 800 x 600 60Hz 800 x 600 75Hz 1024 x 768 60Hz 1024 x 768 75Hz 1152 x 864 75Hz 1280 x 1024 60Hz 1280 x 1024 75Hz 1680 x 1050 60Hz FH (KHz) 31.47 31.47 37.5 37.88 46.88 48.36 60.02 67.5 64 80 65.3 Pixel Rate (MHz) 28.322 25.175 31.5 40 49.5 65 78.75 108 108 135 146.25 NOTE: (1)76Hz≦FV: monitor can display but doesn't guarantee. (2) FH＞=85KHz, or Fv＞=80Hz: Power Save (OSD warning invalid mode). Sync Polarity H V - + - - - - + + + + - - + + + + + + + + - + 3.8. Controller Requirements 3.8.1. General Requirements The monitor shall include a controller capable of converting the analog RGB signal from a standard WSXGA resolution video controller in the CPU to a signal which can be displayed on the panel. The controller will include a PLL, A/D converters, and other circuitry necessary to perform its function. The PLL shall be stable enough to ensure that a static image from the CPU is placed in the same physical location on the flat panel in each frame. 3.8.2. Video Stretching The monitor shall contain provisions to "stretch" the video signal, so that an input signal from the computer in any resolution smaller than 1680 x 1050 is automatically expanded to fill the entire screen. 3.8.3. Panel Timing and Interface The controller supplied with the monitor shall control all panel timing. This controller shall adequately insulate the monitor from the computer, so that no possible combination of input signals from the computer shall cause damage to the flat panel or any other component of the monitor. The LCD panel interface shall support the TFT standard. 3.9. DC - AC Inverter Requirements: The frequencies used by the DC - AC inverter used to power the backlight shall be chosen so as to prevent any noticeable effects on the flat panel (such as a rolling effect). 3.10. Power Supply Requirements The AC to DC converter power supply for the monitor shall be an integrated power supply. This power supply shall have an IEC receptacle for mains power input and provide sufficient power for the monitor, the backlight assembly and the "Dell Sound bar", and shall meet all requirements specified in Table 2.