Acer X193HQ Service Manual page 7

3.2.2 Signal interface
Item
Signal Cable
Pin assignment
Analog input
Sync input
Digital input
Note-1: The pin assignment of 15-pin D-sub connector is as below,
Pin
1
2
3
4
5
6
7
8
Condition
15-pin D-Sub
24-pin DVI-D
15-pin D-sub
connector
24-pin DVI-D
connector
19-pin HDMI
connector
Signal type
Level
Impedance
Signal type
Level
Impedance
Sync Pulse Width
(SPW)
Level
Impedance
Signal Assignment
Red video
Green video
Blue video
Ground
Cable Detected
Red Ground
Green Ground
Blue Ground
- 7 -
Spec
Color: Black
Length: 1800 +/- 30
mm
Color: Black
Length: 1800 +/- 50
mm
See Note-1
See Note-2
See Note-3
Separate analog R/G/B √
700 mV (peak to peak) √
75 Ohms +/- 1.5 Ohms
Separate H/V-sync
(Positive/Negative)
Logic High: 2.4V ~
5.5V
Logic Low: 0V ~ 0.5V
(TTL level)
Minimum 2.2K (pull
down)
0.7µs < H-SPW
1H < V-SPW
600mV for each
differential line
50 Ohm TDR Scan
needed for DVI cable
and interface board
Pin Signal Assignment
9 PC5V (+5 volt power)
10 Sync Ground
11 Ground
12 SDA
13 H-Sync (or H+V)
14 V-sync
15 SCL
OK N.A Remark
√
√
√
For 15-pin D-sub
√
For 24-pin DVI-D
√
For 19-pin HDMI
For 15-pin D-sub
√
√
For 15-pin D-sub
Refer to VESA
√
VSIS Standard
V1R1
10K for
√
application
√
√
√