Acer RA19WAANU service manual Connector Pin Description SUB Description

1. Product Specification (continued)

ACER X193HQ

3

Pin	Signal	Pin	Signal	Pin	Signal
1	Red-Video	6	Red-GND	11	NC
2	Green-Video	7	Green-GND	12	DDC-SDA
3	Blue-Video	8	Blue-GND	13	H-SYNC
4	NC	9	+ 5V	14	V-SYNC
5	Connection Detect	10	GND	15	DDC-SCL

Connector Pin Description

D-SUB Description

Pin	N am e	D escription
1	R ed-V ideo	R ed video signal input
2	G reen-V ideo	G reen video signal input
3	B lue-V ideo	B lue video signal input
4	N C	N ot connect
5	C onnection D etect	D eteck V G A C able have C onnected or not
6	R ed-G N D	A nalog signal ground for the R ed video
7	G reen-G N D	A nalog signal ground for the G reen video
8	B lue-G N D	A nalog signal ground for the B lue video
9	+5V	+5V input from host system for the V ESA D D C 2B i function
10	Sync-G N D	Signal ground
11	N C	N ot connect
12	N C D D C -S D A	SD A signal input for the V ESA D D C 2B i function
13	H -SY N C	H orizontal signal input from the host system
14	V -SY N C	V ertical signal input from the host system
15	D D C -SC L	SC L signal input for the V ES A D D C 2B i function

DVI-I/DVI-D(If using DVI-D cable,C1,C2,C3,C4,C5 is NC)

Pin

Signal

Pin

Signal

Pin

Signal

1

RX2-

13

NC

C1

Analog Red(NC)

2

RX2+

14

5V

C2

Analog Green (NC)

3

GND

15

DVI Connect

C3

Analog Blue (NC)

4

NC

16

HP

C4

Analog H-Sync (NC)

5

NC

17

RX0-

C5

GND

6

SCL

18

RX0+

7

SCA

19

GND

8

Analog V-Sync(NC)

20

NC

9

RX1-

21

NC

10

RX1+

22

GND

11

GND

23

RXC+

12

NC

24

RXC-

DVI-I/DVI-D

Connector

Pin Description

Pi

Pin

Name

Desription

n

Name

Desription

1

RX2-

TMDS link #0 channel #2 differential pair

16

HP

Hot plugging

2

RX2+

TMDS link #0 channel #3 differential pair

17

RX0-

TMDS link #0 change #1 differential

pair

3

GND

GND for no link share

18

RX0+

TMDS link #0 change #1 differential

pair

4

NC

NC

19

GND

GND for no link share

5

NC

NC

20

NC

NC

6

SCL

Clock line for DDC interface

21

NC

NC

7

SDA

Data

line for DDC interface

22

GND

Clock shield

8

Analog V-Sync

V-sync for analog interface

23

RXC+

TMDS clock differential pair

9

RX1-

TMDS link #0 change #1 differential

pair

24

RXC-

TMDS clock differential pair

10

RX1+

TMDS link #0 change #1 differential

pair

C1

Analog Red

Analog Red signal

11

GND

GND for no link share

C2

Analog Green

Analog Green signal

12

NC

NC

C3

Analog Blue

Analog Blue signal

13

NC

NC

C4

Analog H-Sync

H-Sync for analog interface

14

5V

+5V input from host system for DDC 2B function

C5

Analog GND

Analog GND

15

DVI Connect

Using as Detect Cable

1.3.1.3 Audio Jack (option)

This jack shall connect the audio input from host computer.

1.3.2Video Input Signals

Video Input Signal Ranges

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No.	Symbol	Item	Min	Normal	Max	Unit	Remark
1	Fh	Horizontal Frequency	31		83	kHz	Minimum range
2	Fv	Vertical Frequency	56		75	Hz	Minimum range
3	Vih	Hi Level Input	2.0		5.0	V	Note 1)
4	Vil	Low Level Input	0		0.8	V	Note 1)
		RGB Analog Video
5	Video	Level	0.0	0.7	0.1	V	75Ω to Ground

Note 1) Schmitt-Triggers Input, Supported 3.3V device H(&V) sync output from PC

V id e o I n p u t S ig n a l

N o .	S y m b o l	I t e m	M in	N o r m a l	M a x	U n it	R e m a r k
1	F h	S c a n n i n g H o r i z o n t a l F r e q u e n c y	3 0		9 4	k H z	M i n i m u m r a n g e
2	F v	S c a n n i n g V e r t i c a l F r e q u e n c y	5 5		7 6	H z	M i n i m u m r a n g e
3	V i h	H i L e v e l I n p u t	2		5		N o t e 1 )
4	V i l	L o w L e v e l I n p u t	0		0 .8	V	N o t e 1 )
5	V i d e o	R G B A n a l o g V i d e o L e v e l	0 .0	0 . 7	1 .0	V	7 5 Ω t o G r o u n d

N o t e 1 ) S c h m i t t - T r i g g e r s I n p u t , S u p p o r t e d 3 . 3 V d e v i c e H ( & V ) s y n c o u t p u t f r o m P C .

1.3.2.1Video Signal Amplitudes

The three video inputs consist of Red ,Green , and Blue signals, each with its own coaxial cable terminated at the monitor. These video signals are analog levels, where 0 V corresponds to black , and 700 mV is the maximum signal amplitude for the respective color, when each signal is terminated by a nominal 75.0 ohms .For a given monitor luminance levels are measured using this defined video amplitud driving a monitor meeting the termination requirements .The signal amplitude is not to be readjusted to compensate for variations in termination impedance.

1.3.2.2Video Signal Termination Impedance

This analog video signal termination shall be 75Ω+/-1% which shall be resistive with a negligible reactive component .

1.3.2.3Synchronization ( Sync ) Signals

The Horizontal Sync (HS) TTL signal is used to initiate the display of a horizontal line. HS may be either active high or active low, depending upon the timing .The Vertical Sync (VS) TTL signal is used to initiate the display of a new frame .VS may be either active high or active low, depending on the timing

1.3.2.4Sync Signal Levels

The monitor must accept sync signals from both 3.3 and 5 volt TTL logic families.The inputs shall sense a logic 0 when the input is 0.8 volt or less and shall sense a logic 1 when the input is 2.0 volts or greater. In addition to these level requirements, there shall also be a minimum of 0.3 volt hysteresis provided for noise immunity (typically by using a Schmitt Trigger input ).That is , the input level at which the monitor actually detects a logic 0 shall be at least 0.3 volt lower than the level at which it actually detects a logic 1.If the monitor sync processing circuits are designed around the 3.3 volt logic family ,then the sync inputs must be 5 volt tolerant .