1.Product Specification (continued)
1.3.2 Video Input Signals
1.3.2.1 Video 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.
1.3.2.2 Video Signal Termination Impedance
This analog video signal termination shall be 75 1%
which shall be resistive with a negligible reactive
component
1.3.2.3 Synchronization ( 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
1.3.2.4 Sync 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 .
TTL input loading shall be equivalent to one TTL input
load. When logic 0 is asserted by a sync input , the
maximum current source from any single monitor sync
input to the driver is 1.6 mA .When logic 1 is asserted ,
the maximum current source from the driver to any
single monitor sync input is 400 uA .
Ω+/-
.1.3.2.5Sync Signal Loading
DSUB
Pin Signa l Pin Sign a l Pin Sign a l
1Red-Video 6Red-GND 11 NC
2Green-Video 7Green-GND 12 DDC-SDA
3Blue-Video 8Blue-GND 13 H-SYNC
4NC 9+5V 14 V-SYNC
5DDC-GND 10 Sync-GND 15 DDC-SCL
ConnectorP in Assignment
D-SUBPinDescription
Pin Name Description
1 Red-Video Redvideosignalinput.
2 Green-Video Greenvideosignalinput.
3 Blue - V ideo Bluevid e o signal input.
4GND Ground
5 DDC-GND DDCgroundfortheVESA DDC2Bifunction.
6 Red-GN D Analog signalground for theRed video .
7 Green-GND AnalogsignalgroundfortheGreen video.
8 Blue-GND Analogs ignalgro und fortheB lue video .
9 +5V +5V inputfrom host system for the VESA DDC2Bifunction.
10 Sync-GND Signalground
11 GND Ground
12 DDC_SDA SDAsignalinputfortheVESA DDC B2i function.
13 H-SYNC Ho rizontalsignalinputfrom thehostsystem.
14 V-SYNC Ve rticalsignalinput from the host system.
15 DDC-SCL SCL signalinputfortheVESA DDC2Bifunction.
ConnectorPinD escription
DVI-I/ DVI-D (If using DVI-D cable,C1, C2, C3, C4, C5 is NC)
Pin Signal Pin Signal Pin Signal
1RX2- 11 GND 21 NC
2RX2+ 12 NC 22 GND
3GND 13 NC 23 RXC+
4NC 14 5V 24 RXC-
5NC 15 GND C1 AnalogRed ( NC)
6SCL 16 HP C2 AnalogGreen ( NC)
7SCA 17 RX0- C3 AnalogBlue (NC)
8AnalogV-Sync (NC) 18 RX0+ C4 AnalogH-Sync (NC)
9RX1- 19 GND C5 GND
10 RX1+ 20 NC
DVI-I/DVI-D Connector PinDe scription
Pin Name Description Pin Name Description
1 RX2- TMDSlink#0channel#2differentialpair 16 HP Hotplugging
2 RX2+ TMDSlink#0 channel#2 differentialpair 17 RX0- TMDSlink#0 channel#0 differentialpair
3 GND GNDfo r no link share 18 RX0+ TMDSlink#0 c hannel #0 differ ential pair
4 NC NC 19 GND GNDfor no link shar e
5NC NC 20NC NC
6 SCL Clock linefor DDC interface 21 NC NC
7 SDA Dat a line for DDC int erfac e 22 GND Clock shiel d
8Analog
V-Sync V-sync fo r ana log inte rface 23 RXC + TMDSclock d iffere ntial p air
9 RX1- TMDSl ink #0 channel #1 diff erentia lp air 24 RXC- TMDSclock differe ntial pair
10 RX1+ TMDSlink#0channel#1 differentialpair C1 Anal og
Red AnalogRe d signal
11 GND GND for nolink share C2 Analo g
Green Analog Gree n signal
12 NC NC C3Ana log
Blue AnalogBlue s ignal
13 NC NC C4Ana log
H-Sync H-sync for analoginterface
14 5V +5Vinputfromhost system for DDC2Bfunction. C5 Analog
GND AnalogGND
15 GND Ground(UsingasDetect Cable)
No. Symbol Item Min Norm al Max Unit Remark
1Fh Scanning H orizontalFrequency 30 94 kHz M inimum range
2Fv Scanning V erticalFrequency 55 76 Hz Minimum range
3Vih Hi L evelInput 2 5 N ote 1)
4Vil L ow Level Input 0 0.8 V Note1)
5Video RG B Analog VideoLevel 0.0 0.7 1.0 V 75Ωto Ground
Note 1) Schm itt-Triggers Inp u t ,Supported3.3V deviceH (& V ) syncoutputfrom PC.
VideoInput Signal
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ACERG24