Acer DBG DPBU II Service-Handbuch - Seite 7

Blättern Sie online oder laden Sie pdf Service-Handbuch für Monitor Acer DBG DPBU II herunter. Acer DBG DPBU II 10 Seiten.

Seite drucken

1.3.4.3 Mode Recognition Pull-in

The monitor shall recognize preset modes within a

range of +/-1KHz whichever is less for horizontal ;

and within +/-1Hz for vertical.

1.3.4.4 User 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

I tem

N o

Resoul ut ion

T103

640x480@60Hz

T173

640x480@72Hz

T109

640x480@75Hz

T182 [email protected]

T102

720x400@70Hz

T 104

800x600@56Hz

T 116

800x600@60Hz

T 117

800x600@72Hz

T 110

800x600@75Hz

T 108 832x624@74. 55Hz

T 118

1024x768@60Hz

T 157

1024x768@70Hz

T 141

1024x768@75Hz

T 203

1152x870@75Hz

T126

1152x864@75Hz

T161

1280x960@60Hz

T179 1280x1024@60Hz

T131 1280x1024@75Hz

T339

1280x720@60Hz

T213

1280x800@60Hz

T278

1366x768@60Hz

1.3.5 Controller Requirements

1.3.5.1 General 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.

ACER X193HQ

Go to cover page

1.3.8 Display Communications Channel

The monitor assembly shall provide a display

communications channel that conforms to VESA

DDC2Bi hardware requirements. This configuration

shall contain the 128-byte EDID file as specified by

VESA EDID standard.The monitor should not write to

the EDID file for the first two minutes of operation

following power-up UNLESS some action taken by the

user or the host CPU forces the write (for instance,

requesting the serial number via the OSD).

Furthermore, it is recommended that CMOS switches

be incorporated to isolate the DDC IC from outside

connections while the EDID Fault Management is

being updated. This is to prevent corruption of the data

by attempts to read the data while it is being changed.

1.3.9 Firmware Update Function (same ISP function)

The update firmware need through from the D-Sub

connector, use DDC I2C bus to do update firmware.

1.4 PANEL ELECTRICAL

1.4.1 General Requirements

The panel used as the display device shall be an

WXGA 1366X768 resolution, 19 inch-wide TFT-LCD.

This panel shall be approved for use in this monitor.

1.4.2 Panel Timings

1. Product Specification (continued)

H-Sync

V-Sync

Band Width

Polarit

Source

(KHz)

(MHz)

H V

31. 469

59.941

25. 175

VESA

37. 861

72.809

31. 500

VESA

37. 500

75.000

31. 500

VESA

66.66

30.24

M AC

31.469

70. 087

28.322

VGA

35. 156

56. 250

36. 000

+ + VE SA

37. 879

60. 317

40. 000

+ + VE SA

48. 077

72. 188

50. 000

+ + VE SA

46. 875

75. 000

49. 500

+ + VE SA

49. 722

74. 55

57. 28

VE SA

48. 363

60. 004

65. 000

VE SA

56. 476

70. 069

75. 000

VE SA

60. 023

75. 029

78. 750

+ + VE SA

68. 700

75. 000

84. 520

67.5

108

+ +

108

+ + VESA

63.981

60.020

108.000

+ + VESA

79.976

75.025

135.000

+ + VESA

+ +

44.955

59.940

74.176

+ +

49.702

59.810

83.500

47.712

59.790

85.500

1. Product Specification (continued)

1.3.5.2 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 1366 x

768 is automatically expanded to fill the entire

screen.

1.3.5.3 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.

1.3.6 DC - 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).

1.3.7 Power 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

Table 2. AC TO DC Converter Requirements

AC to DC Converter Requirements

The operating range shall be from 90 to 132 and 195 to 265 AVC

Input Voltage Range

sinusoidal for all models specified.

Input power frequency range sha;; be from 47. 5 to 63 Hz over the

Input Frequency Range

specified input voltage range.

Power consumption for the monitor shall be less than

Power Consumption

specified voltage and frequency ranges. In suspend or sleep mode

the power consumption will be less than 2W.

The AC input shall be fused and become electrically open as a result

Line Fuse

on an unsafe current level. The fuse many not be user replace

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 backli ght lamps.

The inrush current must be limited to 30A when operated at

120VAC, and 50A when operated at 220VAC. Inrush current is

Inrush Current

measured at an ambient temperature of 25

temperature stabilized in the power

The power supply shall be damaged when switched ON for one

second and OFF for one second for seven consecutive after

Hot Start Cycl e

operating for one hour at full load, 25

voltage.

The power supply shall contain protectio

application of an input voltage below the minimum specified in this

Under Voltage

table shall not cause damage to the power supply unit nor cause

failure of the input.

The power supply shall o perate 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.

The lamps shall extend a sufficient amount from

the edge of the light guide that sputtering over the

life of the lamps shall not cause degradation of the

luminance uniformity (such as non-illuminated

bands along the edges of the display).

1.4.4.2 Lamps Startup Time

The backlight lamps shall start about 2 sec of the

time the monitor power switch is pressed or the

monitor is restarted from a power - down mode

.The starting time shall stay about 2 sec. for the

minimum expected life of the lamps.

Test conditions are as follows :

Ambient Light ----------------------

Temperature--------------------------

Inactive Time -----------------------

1.4.5 Defects

1.4.5.1 Visual Inspection

The LCD panel shall be inspected with all pixels

set to white,black , red , green , and blue. The color

variation, brightness variation , and overall

appearance must not be perceived as poor quality

by Lite-On . Areas and / or parameters considered

questionable shall be subjected to detailed

measurements .

ACER X193HQ

Go to cover page

Table 2

W over the

able.

o C, with the unit

-off.

o C, and nominal input line

n circuitry such that the

< 1.0 lux

℃

> 24 hours