Acer H243H service manual Input / Output Signal Specifications, Video signals, Signal Timing

Acer Acer –LCD-H243H

4.Input / Output Signal Specifications

4.1Video signals

Analog RGB signal:	0.7Vp-p	(Input impedance = 75 Ohm)
Sync:	TTL level	(Input impedance		≧ 1k Ohm)
Positive and negative sync of Separate Horizontal/Vertical Sync
Digital :	TMDS Signal:		(min)	±200mVpp@24Bit

4.2 Signal Timing

Through D-SUB/DVI connectors, this unit can support FH= 31~80 KHz, Fv=55~76Hz, with maximum pixel clock 165MHz input signal and WSXGA+ output. Modes details as below:

VESA MODES

Mode	Resolution	Total	H Frequency	V Frequency	Pixel Clock
					(MHz)
VGA	640x480	800 x 525	31.469	59.941	25.175
	640x480	832 x 520	37.861	72.809	31.500
	640x480	840 x 500	37.500	75.000	31.500
	800x600	1024 x 625	35.156	56.250	36.000
SVGA	800x600	1056 x 628	37.879	60.317	40.000
	800x600	1040 x 666	48.077	72.188	50.000
	800x600	1056x625	46.875	75.000	49.500
XGA	1024x768	1344x806	48.363	60.004	65.000
	1024x768	1328x806	56.476	70.069	75.000
	1024x768	1312x800	60.023	75.029	78.750
VESA	1152x864	1600x900	67.5	75	108
	1280x960	1800x1000	60	60	108
SXGA	1280x1024	1688x1066	63.981	60.020	108.000
	1280x1024	1688x1066	79.976	75.025	135.000
VESA	1280x720	1650x750	44.955	59.940	74.176
WXGA	1280x800	1680x831	49.702	59.810	83.500
	1360x768	1792x795	47.712	60.015	85.500
WXGA+	1440x900	1904x931	55.935	59.887	106.500
	1440x900	1936x942	70.635	75.000	136.750
SXGA+	1400x1050	1864x1089	65.317	59.978	121.75
WSXGA+	1680x1050	2240*1089	65.290	59.954	146.250
UXGA	1600x1200	2160x1250	75.000	60.000	162.000
	1920x1080-R	2080x1111	66.587	59.934	138.50

IBM MODES

EGA	720x400	900x449	31.469	70.087	28.322
		MAC MODES
VGA	640x480	864x525	35	66.66	30.24
SVGA	832x624	1152x667	49.722	74.55	57.28
SXGA	1152x870	1568x909	68.700	75.000	84.520

Note: 1. Non-interlace signals only (An interlace signal cannot be display)

2.Please refer to F/W specification for more detail

3.Each frequency of Power Macintosh and Sun Ultra is a reference value

4.3Timing requirements

The LCD monitor must be capable of displaying standard resolutions within the vertical frequency range of 55 ~ 76 Hz and the horizontal scan range of 31 ~ 80 KHz with maximum pixel clock of 190MHz.

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