Acer MB243WABNS service manual Factory Preset Video Timings Digital Inputs

1. Product Specification (continued)

ACER G24

5

1.3.4.3Mode Recognition Pull-in

The monitor shall recognize preset modes within a range of +/-1KHz whichever is less for horizontal ; and within +/-1Hz for vertical.

1.3.4.4User Display Modes

In addition to the factory pre-set video modes, provisions shall be made to store up to 9 user modes. If the current mode is a user mode, the monitor shall select its previously stored settings. If the user alters a setting, the new setting will be stored in the same user mode. The user modes are not affected by the pre-set command. If the input signal requires a new user mode, storage of the new format is automatically performed during user adjustment of the display (if required).( Please see Note.(4) )

Preset timing Chart

				P reset T im in g C h art
Item	R eso lu tio n		H -S y nc		V -S y n c		B an d W idth			P o larity		S ou rce
			(K H z)		(H z)			(M H z)		H	V
1	7 20 x 4 0 0		31 .4 72		70 .4		2 8 .3 25			-	+	V G A
2	6 40 x 4 8 0		31 .4 69		5 9 .9 4		2 5 .1 75			-	-	V G A
3	6 40 x 4 8 0		3 7.5		7 5		3 1.5			-	-	V E S A
4	6 48 x 5 0 0		31 .2 34		5 7.73 5		3 1 .2 34			+	+	M A C
5	8 00 x 6 0 0		37 .8 79		60 .3		4 0			+	+	V E S A
6	8 00 x 6 0 0		46 .8 75		7 5		4 9.5			+	+	V E S A
7	10 2 4 x 76 8		48 .3 63		6 0		6 5			-	-	V E S A
8	10 2 4 x 76 8		60 .0 23		7 5		78 .7 5			+	+	V E S A
9	1 2 80 x 1 0 24		63 .9 81		6 0		1 08			+	+	V E S A
10	1 2 80 x 1 0 24		79 .9 76		7 5		1 35			+	+	V E S A
11	14 4 0 x 90 0		55 .4 69		5 9 .0 1		88 .7 5			+	-	C V T -R B
12	14 4 0 x 90 0		55 .9 35		5 9.88 7		10 6 .5			-	+	C V T
13	14 4 0 x 90 0		70 .6 35		7 4 .9 8		1 3 6.75			-	+	C V T
14	12 8 0 x 72 0		45		6 0		74 .2 5			+	+	C E A -8 61
15	12 8 0 x 80 0		49 .7 02		6 0		8 3.5			-	+	C V T
16	12 8 0 x 80 0		62 .7 95		7 5		10 6 .5			-	+	C V T
17	1 6 00 x 1 2 00		75		6 0		1 62			+	+	V E S A
18	1 6 00 x 1 2 00		74 .0 06		5 9.92 4		1 3 0.25			+	-	C V T -R B
19	1 6 00 x 1 2 00		93 .7 5		7 5		20 2 .5			+	+ /-	V E S A
20	1 6 80 x 1 0 50		65 .2 9		5 9.95 4		1 4 6.25			-	+	C V T
21	1 6 80 x 1 0 50		64 .6 74		5 9.88 3		1 19			+	-	C V T -R B
22	1 6 80 x 1 0 50		82 .3 06		7 4.89 2		1 87			-	+	C V T
23	1 9 20 x 1 2 00		74 .0 38		5 9 .9 5		1 54			+	-	C V T -R B
24	1 9 20 x 1 2 00		74 .5 56		5 9.88 5		1 9 3.25			+	-	C V T
N O T E : (1 ) 76 ≦ F V ≦ 8 6 : m on ito r can d isp lay bu t do esn't gu aran tee.
	(2 ) fV < 5 5, o r fV > 86 : w arn in g in v alid m o de.
	(3 ) F acto ry m od el :
	A fter w e first b urn th e co de into th e flash , every p reset-m o del w e run first m u st d o au to -adjustin g .
	T h en it'll n ot d o au to -adjust again w h en w e chan ged p reset-m o de b ack in clu d in g A C o n /o ff D C on /o ff.
	T h e on ly w ay th at preset-m o d e d o au to -ad ju st ag ain is p ress '' Internal F actory R eset''.
	(4 ) U ser m od e :
	T h e co de sh ou ld m em orize 9 tim in g m o de ex clusive o f p reset-m od es as u se m o de an d d o au to -adju stin g .
	W h en u ser set a n ew m o de th at is no t am on g p reviou sly . It'll do auto-ad ju stin g th en b e so lv ed to u ser m o de
	T h e new m o d e w ill ov erw rite the first m em o rized u ser m od es.
	T h e user m o des b e cleared is sam e as F acto ry m od e. Ju st do '' In ternal F acto ry R eset''.
	(5 ) Internal F acto ry R eset an d O S D F acto ry R eset behavior.
FACTORY PRESET VIDEO TIMINGS (DIGITAL INPUTS)
															Pixel
	CEA-861-C											H-freq	V-freq
		H-Active		V-Active		I/P	H-tot.		HB	V-tot.	VB				freq	Inputs
	code											(kHz)		(Hz)
															(MHz)
	17,18	720		576		P	864		144	625	49	31.250		50.000	27.000	DVI,HDMI
	19	1280		720		P	1980		700	750	30	37.500		50.000	74.250	DVI,HDMI
	20	1920		1080		I	2640		720	1125	22.5	28.125		50.000	74.250	DVI,HDMI
	21, 22	1440		576		I	1728		288	625	24.5	15.625		50.000	27.000	HDMI
	31	1920		1080		P	2640		720	1125	45	56.250		50.000	148.500	DVI,HDMI
	39	1920		1080		I	2304		384	1250	85	31.250		50.000	72.000	DVI,HDMI
	2, 3	720		480		P	858		138	525	45	31.469		59.940	27.000	DVI,HDMI
	4	1280		720		P	1650		370	750	30	44.955		59.940	74.176	DVI,HDMI
	5	1920		1080		I	2200		280	1125	22.5	33.716		59.940	74.176	DVI,HDMI
	6, 7	1440		480		I	1716		276	525	22.5	15.734		59.940	27.000	HDMI
	16	1920		1080		P	2200		280	1125	45	67.433		59.940	148.352	DVI,HDMI

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■Digital inputs (DVI, HDMI): Conflicting video- and PC timings are to be treated as Video timings with one exception: 640x480p/60Hz timing to be treated as PC-timing.

■Analog input (VGA) treats all timings as PC-timings.

1.3.5Controller Requirements

1.3.5.1General Requirements

The monitor shall include a controller capable of converting the analog RGB signal from a standard WUXGA 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, LVDS transmitter 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.

1.3.5.2Video Stretching

The monitor shall contain provisions to “stretch” the video signal, so that an input signal from the computer in any resolution smaller than 1920 x 1200 is automatically expanded to fill the entire screen.

1.3.5.3Panel 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.

1.3.6DC - AC Inverter Requirements

The DC-AC inverter is on the power board. 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).

1.3.7Power Supply Requirements

The AC to DC converter power supply for the monitor shall be an external AC to DC converter ”brick” This brick shall have an IEC receptacle for main power input and a pin - in

---socket for DC power out. The brick shall provide sufficient power for both the monitor and the backlight assembly, and shall meet requirements specified in Table 2.