BenQ V37X, Product Service Manual, Page: 23 / 192

23
PIN SIGNAL
1 PC RED/Component Cr
2 PC GREEN/Component Y
3 PC BLUE/Component Cb
4 UART_RX
5 UART_TX
6 RED GND
7 GREEN GND
8 BLUE GND
9 PC5V
10 SYNC GND
11 GND
12 DDC DATA (SDA)
13 HORIZONTAL SYNC(H+V)
14 VERTICAL SYNC
15 DDC CLOCK (SCL)
3.1.2 Signal Level
(1) PC Analog input
(A)Level 0.7 volt ± 5%
(B)Impedance 75 ohm. TDR scan needed for both D-SUB cable and interface board.
3.1.3 PC audio Input :
(1) Connector 3.5mm phone plug
(2) Level 500mVrms
(3) Impedance > 10k
Ω
3.1.4 Input signal Quality:
(1) Rise/Fall time
-Video Signal: less than 2.0ns
-Horizontal SYNC: less than 50ns
-Vertical SYNC: less than 100ns
(2) TTL Signal Level
The levels of Horizontal & Vertical SYNC will be TTL level, their high level will be 2.4-5.5V, and
low level will be 0-0.2V.