Input Signals - Acer AL1731 Service Manual

2.4 Input Signals

2.4.1 Video input
•
Type
•
Input Impedance
•
Polarity
•
Amplitude
•
Display Color
2.4.2 Sync input
•
Signal
•
Polarity
2.4.3 Interface frequency
The following frequency range is generalized by supported timing. If the entered
mode does not match the supported timing the display optimization will not be
assured.
•
Horizontal Frequency 30KHz --80KHz(analog), 31.5– 64KHz(digital)
•
Vertical Frequency
MONITOR
MODE NO.
1
2
3
4
5
6
7
8
9
10
11
12
Analog R, G, B., Digital TMDS
75 ohm +/- 2%
Positive
0 - 0.7 +/- 0.05 Vp
same as LCD panel
separate horizontal and vertical sync, or composite sync
which are TTL compatible
positive and negative.
56Hz ---------75Hz
DISPLAY MODES
SCREEN HORIZONTAL
RESOLUTION SYNC RATE
640X480
640X480
640X480
720X400
800X600
800X600
800X600
1024X768
1024X768
1024X768
1280X1024
1280X1024
VERTICAL
SYNC RATE
(kHz) (Hz)
31.5 - 60.0 -
37.86- 72.80-
37.5- 75.0-
31.5 - 70.0 +
37.8 + 60.0 +
48.07 + 72.18 +
46.87+ 75.0+
48.4 - 60.0 -
56.47 - 70.07 -
60.0 + 75.0 +
64.0 + 60.0 +
80.0 + 75.0 +
11
VIDEO CLK STANDARD
(MHz)
25.0 Defacto
31.5 VESA
31.5 VESA
28.0 Text Defacto
40.0 VESA
50.0 VESA
49.5 VESA
65.0 VESA
75.0 VESA
78.75 VESA
108.5 SXGA
135.0 SXGA