BenQ VP2212 Service Manual page 9

1. PC Analog Signal
Signal cable :
D-Sub: 15pin D-sub connector is on the captive signal cable for IBM VGA or compatible graphic
adapters. The shall be 1.8 meters long.The pin assignment of this connector is described as below:
Signal Level:
RGB separate, Analog 0.7Vp-p/75 Ohm
Input signal Quality:
(1) Rise/Fall time
-Video Signal: less than 4.0ns
(2) TTL Signal Level
The levels of Horizontal & Vertical Sync will be TTL levels, their high level will be 2.4-5.5V, and
low level will be 0-0.2V.
(3) Video Signal Level
The video signal when terminated with an idea 75 ohm termination will have a range of 0V to 0.7V
(normal), and its full scale output will be 0.7V and black level will be between 0V and 0.1V.
1
6
11
Pin D-Sub Connector
1 Red
2 Green
3 Blue
4 RX
5 GND
6 Red GND
7 Green GND
8 Blue GND
9 +5V for DDC
10 GND
11
12 SDA
13 H-sync
14 V-sync
15 SCL
9
5
10
15
TX