Acer V173 Service Manual page 8

4.
Input / Output Signal Specifications
4.1 Signal Interface
Items
Signal Cable
Analog
Sync
4.2 Signal Timing
Through D-SUB connectors, this unit can support F
display modes as below:
Resolution
640 x 480
800 x 600
1024 x 768
1280 x 1024
640 x 350
720 x 400
832 x 624
1024 x 768
4.3 Timing Requirements
Item
Sync polarity: (+) or (-)
Horizontal
Sync polarity: (+) or (-)
Vertical
Excluding
Out of range
Horizontal 31.5~80 KHz or
Vertical
Cable not
No VGA cable
connect
4.4 DDC Data
Condition
15 pin D-Sub
DVI
Signal type
Level
Impedance
Signal type
Level
Impedance
H-Freq. (kHz) V-Freq. (Hz)
31.5 60.0
37.9 72.0
37.5 75.0
35.1 56.0
37.9 60.0
48.1 72.0
46.9 75.0
48.4 60.0
56.5 70.0
60.0 75.0
64.0 60.0
80.0 75.0
31.5 70.0
31.5 70.0
49.7 74.6
60.2 75.0
48.8 60.0
Condition
31.5 ~ 80 KHz.
56-75Hz
Message "Input Not Supported" on screen
56-75 Hz
Message ''No Signal'' on screen
Spec
Color: Gray
+/-
Length: 1800 20 mm
NA
Separate analog R,G,B
700 mV +/- 5% (peak to
peak)
75 Ohms +/- 2% Ohms
Separate H/V-sync
(Positive/Negative)
Logic High: 2.0V ~ 5.5V
Logic Low: 0V ~ 0.8V
(TTL level)
1.0K Ohm
= 31.5 ~ 80 KHz, Fv=56 ~ 75Hz and SXGA
H
Dot Clock (MHz)
25.175
31.500
31.500
36.000
40.000
50.000
49.500
65.000
75.000
78.750
108.000
135.000
25.175
28.322
57.283
80.000
64.000
Specification
7
OK Note
●
● For 15 pin D-sub
●
●
● For 15 pin D-sub
● Refer to VESA VSIS
Standard V1R1
● 1.0K for application
Ω
Mode
VESA
IBM-AT Compatible
machine
PC-9800 series
US/IBM Text
Power Macintosh series