Acer WISTRON RB23WABAS, Service Manual

Page: 6 / 53

1. Product Specification (continued)
PRESET PC TIMINGS (ANALOG AND DIGITAL
INPUTS)
Analog input (VGA) treats all timings as PC-timings.
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
2.
PRESET VIDEO TIMING(DIGITAL INPUT)
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
1920x1080 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.
1.3.5.2 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 1920 x
1080 is automatically expanded to fill the entire
screen.
Mode
Resolution
(active dot)
Resolution
(total dot)
Horizontal
Frequency (KHz)
Vertical
Frequency (Hz)
Nominal Pixel
Clock (MHz)
Aspect
Ratio
VGA 640x480@60Hz 800 x 525 31.469 59.941 25.175 4:3
MAC 640x480@66.66Hz 864x525 35 66.66 30.24 4:3
VESA 720x400@70Hz 900x449 31.469 70.087 28.322 1.8
800x600@56Hz 1024 x 625 35.156 56.250 36.000 4:3
SVGA
800x600@60Hz 1056 x 628 37.879 60.317 40.000 4:3
1024x768@60Hz 1344x806 48.363 60.004 65.000 4:3
XGA
1024x768@70Hz 1328x806 56.476 70.069 75.000 4:3
VESA 1152x864@75Hz 1600x900 67.5 75 108 4:3
SXGA 1280x1024@60Hz 1688x1066 63.981 60.020 108.000 5:4
WXGA 1280x800@60Hz 1680x831 49.702 59.810 83.500 16:10
WXGA+ 1440x900@60Hz 1904x931 55.935 59.887 106.500 16:10
1920x1080@60Hz 2576x1120 67.158 59.963 173.000
HD
1920x1080@60Hz 2200x1125 67.500 60.000 148.500
16:9
CEA-861 H-Active V-Active I/P H-Total H-Back V-Total V-Back H-Freq. V-Freq. P-Freq.
-c-code Porch Porch (kHz) (Hz) (MHz)
1 640 480 p 800 48 525 33 31.5 60 25.2
2,3 720 480 p 858 60 525 30 31.5 60 27.027
4 1280 720 p 1650 220 750 20 45 60 74.25
5 1920 1080 i 2200 148 1125 15 33.75 60 74.25
16 1920 1080 p 2200 148 1125 36 67.5 60 148.5
5
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ACER H233H