Acer AL1917W C, Service Manual

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Acer Service Manual
14
2.1.1 VESA Analog
The video input consists of red, green, and blue signals. The video signals are analog levels, where
0V corresponds to black and 700mV is the maximum signal amplitude. Input impedance of video
pins is 75 ohm ±1%.
Sync signal input
The capability of sync signal inputs shall include separate sync. Input impedance: 2k2 ohms the
signals are defined as follow:
Separate sync TTL level, Positive/Negative
2.1.2 Input signal mode
PRESET TEST MODE TIMING
Resolution
H-Freq.
(kHz)
V-Freq.
(Hz)
Dot Clock
(MHz)
Mode
31.5 60.0 25.175
37.9 72.0 31.500
640 x 480
37.5 75.0 31.500
35.1 56.0 36.000
37.9 60.0 40.000
48.1 72.0 50.000
800 x 600
46.9 75.0 49.500
48.4 60.0 65.000
56.5 70.0 75.000 1024 x 768
60.0 75.0 78.750
1152 x 864 67.5 75.0 108.000
1280 x 960 60.0 60.0 108.000
64.0 60.0 108.000
1280 x 1024
80.0 75.0 135.000
55.9 60.0 106.500
1440 x 900
75.0 75.0 136.750
VESA Standard
720 x 400 31.5 70.0 28.300 US Text
640 x 480 35.0 66.7 30.200
832 x 624 49.7 74.6 57.300
1024 x 768 60.2 75.0 80.000
1152 x 870 68.7 75.0 100.000
64.0 60.0 108.000
1280 x 1024
80.0 75.0 135.000
Power Macintosh
series
48.3 60.0 64.130
53.6 66.0 70.400
1024 x 768
56.6 70.0 74.250
1152 x 900 61.8 66.0 94.880
71.7 67.2 117.010
1280 x 1024
81.1 76.0 134.990
Sun Ultra series
49.7
60.0
58.4 70.0
60.2 72.0
1280 x 800
62.7 75.0
Industrial Standard
2.1.3 VGA signal cable
15 pin D-sub VGA connector of signal cable.
2.1.4 Interface
Analog signal: The input signals are applied to display through D-sub cable.