Acer V223HQ - Power Management and User Comfort; ENERGY STAR Power Management; Tips and Information for Comfortable Use; Finding Your Comfort Zone

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