Acer RA19WAANU service manual Power Supply Requirements, KHz MHz

1. Product Specification (continued)

ACER X193HQ

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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

Preset Timing Chart

Item	No	Resoulution	H-Sync	V-Sync	Band Width	Polarit		Source
			(KHz)	(KHz)	(MHz)	H	V
1	T103	640x480@60Hz	31.469	59.941	25.175	-	-	VESA
2	T173	640x480@72Hz	37.861	72.809	31.500	-	-	VESA
3	T109	640x480@75Hz	37.500	75.000	31.500	-	-	VESA
4	T182	640x480@66.66Hz	35	66.66	30.24	-	-	MAC
5	T102	720x400@70Hz	31.469	70.087	28.322	-	+	VGA
6	T104	800x600@56Hz	35.156	56.250	36.000	+	+	VESA
7	T116	800x600@60Hz	37.879	60.317	40.000	+	+	VESA
8	T117	800x600@72Hz	48.077	72.188	50.000	+	+	VESA
9	T110	800x600@75Hz	46.875	75.000	49.500	+	+	VESA
10	T108	832x624@74.55Hz	49.722	74.55	57.28	-	-	VESA
11	T118	1024x768@60Hz	48.363	60.004	65.000	-	-	VESA
12	T157	1024x768@70Hz	56.476	70.069	75.000	-	-	VESA
13	T141	1024x768@75Hz	60.023	75.029	78.750	+	+	VESA
14	T203	1152x870@75Hz	68.700	75.000	84.520	-	-
15	T126	1152x864@75Hz	67.5	75	108	+	+
16	T161	1280x960@60Hz	60	60	108	+	+	VESA
17	T179	1280x1024@60Hz	63.981	60.020	108.000	+	+	VESA
18	T131	1280x1024@75Hz	79.976	75.025	135.000	+	+	VESA
19	T339	1280x720@60Hz	44.955	59.940	74.176	+	+
20	T213	1280x800@60Hz	49.702	59.810	83.500	+	+
21	T278	1366x768@60Hz	47.712	59.790	85.500	-	-

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 SXGA 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.

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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 1366 x 768 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.

Table 2. AC TO DC Converter Requirements

Table 2

AC to DC Converter Requirements

Input Voltage Range	The operating range shall be from 90 to 132 and 195 to 265 AVC
	sinusoidal for all models specified.
Input Frequency Range	Input power frequency range sha;; be from 475.to 63 Hz over the
	specified input voltage range.
	Power consumption for the monitor shall be less than30W over the
Power Consumption	specified voltage and frequency ranges. In suspend or sleep mode
	the power consumption will be less than 2W.
Line Fuse	The AC input shall be fused and become electrically open as a result
	on an unsafe current level. The fuse many not be user replablece.
	The power supply shall start and function properly when under full
Initial Cold Start	load, with worst case conditions of input voltage, input frequenct,
	operating temperature, and cold backlight lamps.
	The inrush current must be limited to 30A when operated at
Inrush Current	120VAC, and 50A when operated at 220VAC. Inrush current is
	measured at an ambient temperature of 25	oC, with the unit
	temperature stabilized in the power-off.
	The power supply shall be damaged when switched ON for one
Hot Start Cycle	second and OFF for one second for seven consecutive after
	operating for one hour at full load, 25	oC, and nominal input line
	voltage.
	The power supply shall contain protection circuitry such that the
Under Voltage	application of an input voltage below the minimum specified in this
	table shall not cause damage to the power supply unit nor cause
	failure of the input.
	The power supply shalloperate within IEC 801-4 (± 1KV) and IEC
Line Transient	801-5 (± 2KV) for the domestic U.S. version. The UPS power
	supply shall operate and comply with CE mark.