Acer AT4250B series, Service Manual, Page: 15 / 38

Firmware Specifications
Preset Mode for VGA Input
16 factory pre-set modes for VGA inputs are saved during the manufacturing process.
Please press "Volume-" + "" + "POWER" to enter the LCD TV factory mode.
Preset
mode
Pixel Format
Hor. Freq.
(kHz)
Hor. Polarity
Vert. Freq.
(Hz)
Vertical
Polarity
Standard
1 720*400 31.47 - 70 + VGA
2 640*480 31.47 - 60 - VGA
3 640*480 37.861 - 72 - VESA
4 640*480 37.5 - 75 - VESA
5 640*480 43.4 - 85 - VESA
6 800*600 35.156 - 56 + VESA
7 800*600 37.879 + 60 + VESA
8 800*600 48.077 + 72 + VESA
9 800*600 46.875 + 75 + VESA
10 800*600 53.7 + 85 + VESA
11 1024*768 48.363 - 60 - VESA
12 1024*768 56.476 - 70 - VESA
13 1024*768 60.023 + 75 + VESA
14 1360*768 47.7 + 60 + VESA
This LCD TV would detect the used mode automatically.
Preset Mode for HDMI Input
16 factory pre-set modes for DVI inputs are saved during the manufacturing process.
Preset
mode
Pixel Format
Hor. Freq.
(kHz)
Hor.
Polarity
Vert. Freq.
(Hz)
Vertical
Polarity
Standard
1 640*480 60
2 640*480 72
3 640*480 75
4 640*480 85
5 800*600 56
6 800*600 60
7 800*600 72
8 800*600 75
9 800*600 85
10 1024*768 60
11 1024*768 70
12 1024*768 75
13 1024*768 85
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