PureLink DD-120 User manual

DD-120 Owner’s Manual
1 x 2 DVI Distribution Amplifier
Dtrovision LLC
9A Bergen Turnpike
Little Ferry, NJ 07643
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
www.purelinkav.com
For technical support, contact:
[email protected]

PureLink by Dtrovision
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Table of Contents
1-1 Package Contents p.3
1-2 General Specification p.4
1-3 Operation and Reliability Specifications p.5
1-4 Main Features p.6
1-5 Video Connection p.7
1-6 Mechanical Specification p.8
1-7 Technical Specification p.9
1-8 Warranty Information p.10
1-9 Troubleshooting p.11

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1-1 Package Contents
Please make sure all of the following items are included in the package:
1) DD-120 Unit
2) DC 5V 2A Power supply adapter

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1-2 General Specification
PureLink DD-120 distribution amplifier is designed to distribute a single PC digital signal
into multiple monitor without any degradation of original signal quality or distortion of
the image. In addition, a dedicated IC chipset makes DD-120 capable of amplifying and
distributing highest quality of video signal and true HD digital contents.
DD-120 is compact, durable and low power consumption design makes it ideal solution
for connection for high definition video and audio signal of digital display device, such as
LCD, Plasma, LED, Projector, and etc.
In addition, DD-120 offers quick and easy plug and play, installation for commercial or
residential system.
Item
Description
Model
DD-120
Input type
DVI Single Link , 1port
Output type
DVI Single Link , 2port,
Graphic Resolution
VGA / SVGA / XGA / UXGA / WUXGA
480i/p , 720i/p , 1080i/p
Connector type
DC Power Jack
DVI 29 Pin Female
Supported format
DDWG DVI 1.0
HDMI 1.3A
HDCP Compliant
Yes
Power Consumption
DC 5V 2A / 10Watt Max
Dimension
7.5’(W)x 4.25’(D)x 1.37’(H) Inch
Weight
1 lbs

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1-3 Operation and Reliability Specification
1. Operating Environment
Temperature : 50F ~ 104F (10℃~ 40℃)
Humidity : 10% ~ 80%
Altitude : 3,000m Max.
2. Transit Environment
Temperature : -13F ~ 140F (-25℃~ 60℃)
Humidity : 5% ~ 95%
Altitude : 15,000m Max.
3. Storage Environment
Temperature : -4F ~ -49F (-20℃~ 45℃)
Humidity : 5% ~ 95%
Altitude : 3,000m Max.
4. Reliability
MTBF: 90% at over 50,000 hours aging test
In compliance with LCD Monitor reliability test standard

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1-4 Main Features
1. High Quality Picture - No Signal Loss and Digital Noise Free
Our Distribution Amplifiers are built to deliver the highest quality picture preserving
the native resolutions of the video sources without any signal loss. At the same time,
the digital noises that may affect the picture quality will be eliminated. Due to the
nature of the digital signals and passing through multiple stages of connection when
using distribution amplifiers, it is important to eliminate the digital noises and boost
the signal strength to preserve/enhance the video signal quality.
2. Signal Amplification for signal reliability and long length signal transmission
Our 5V power adapter supplies adequate power to amplify the video signals from the
video source. This is necessary as the overall length from the video source to the
displays is longer when using the distribution amplifiers (distance from the video
source to the distribution amplifier + distance from the distribution amplifier to the
display). In most cases, the overall distance that the DVI signal will need to travel is
over 10ft. Due to the nature of DVI signals, amplification is necessary to warrant the
video quality and reliability. (Without amplification, there may be occasional
blackouts or blinking effects) With this amplification feature, your video display can
be extended up to 2300ft using our fiber optical DVI cables.
3. HDCP (High-bandwidth Digital Content Protection) Compliant
Our DVI distribution amplifiers are fully HDCP compliant. Many video sources such as
DVD players and Satellite/Cable Receivers are HDCP encrypted. For these video
sources to be displayed correctly, HDCP compliant devices (e.g., TV, DVI Switch,
distribution amplifier) are required.

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1-5 Video Connection
Video Connection
1. Turn off the whole system before connecting.
2. Connect your video source’s DVI output port to the DD-120’s DVI input port using
standard DVI cables (not included).
3. Connect your DVI display’s DVI input port to DD-120’s DVI output port.
4. Plug the 5V power supply to DD-120
5. Plug the 5V wall mount power supply into the wall outlet.
6. Turn on DD-120
7. Turn on your monitor
8. Turn on your video source.
9. Output# 1 and #2 status light will be lit if everything is properly installed.
EDID Management
PureLink DD-120 is capable of capturing and storing EDID of the monitor that is
connected to DD-120. It is essentially important that source graphic adapter must
recognize and understand the EDID of the connected monitor correctly in order to
describe supported display mode to graphic adapter.
Please follow the next instruction of how to save EDID on DD-120
1. Connect a monitor to output # 1 of DD-120
2. EDID indicator light will blink about 2-3 times, if EDID is successfully saved.
3. Please note that EDID indicator light will blinks 5-6 times, if EDID writing is failed.
In case EDID writing fails, you should check your physical connection.
4. Reboot DD-120 for the change to take effect.
***Notice***
Please note that a factory default EDID is set to WUXGA resolution. Thus you need to
save the EDID before you turn your system on.

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1-6 DD-120 Mechanical Specification
DD-120 Dimension: 7.5’ (W) x 4.25’ (D) x 1.37’ (H) Inch / 1 lb
On/Off switch: Power Switch
POWER: Power Indicator
EDID: EDID Indicator
EDID S/W: EDID save Button
OUT #1, #2: Output Signal Detection LED light
DC +5V: Power Receptacle
INPUT: DVI –D connector
OUTPUT1, 2: DVI Output

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1-7 Technical Specification
Frequency bandwidth: 1.65 Gbps (Single Link)
Supporting Graphic Resolution: Supports all standard display resolutions up to WUXGA (2048 X
1080 / 1920 X 1200 @ 60Hz), UXGA, SXGA, XGA, VGA & 480i/p, 720i/p, 1080i/p)
Inputs: Single DVI Input / Output: Dual DVI Output /Power supply: DC 5V, 2A Adapter included
Connector Pin Assignment
DVI Input, Output
Part No.
Pin No.
Description
Remarks
DVI-D 29pin
1
TMDS DATA 2M
2
TMDS DATA 2P
3
TMDS DATA 2/4 Shield
4
N.C
5
N.C
6
DDC Clock
7
DDC Data
8
N.C
9
TMDS DATA 1M
10
TMDS DATA 1P
11
TMDS DATA 1/3 Shield
12
N.C
13
N.C
14
5V
15
GND
16
Hot Plug Detect
17
TMDS DATA 0M
18
TMDS DATA 0P
19
TMDS DATA 0/5 Shield
20
N.C
21
N.C
22
TMDS DATA Clock Shield
23
TMDS Clock P
24
TMDS Clock M

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1-8 Warranty
2 (Two) Year Warranty
Dtrovision warrants this PureLink DD-120 to be free from defects in workmanship and
materials, under normal use and service, for a period of two (2) year from the date of
purchase from Dtrovision or its authorized resellers.
If a product does not work as warranted during the applicable warranty period,
Dtrovision shall, at its option and expense, repair the defective product or part, deliver
to customer an equivalent product or part to replace the defective item, or refund to
customer the purchase price paid for the defective product.
All products that are replaced will become the property of Dtrovision.
Replacement products may be new or reconditioned.
Any replaced or repaired product or part has a ninety (90) day warranty or the reminder
of the initial warranty period, whichever is longer.
Dtrovision shall not be responsible for any software, firmware, information, or memory
data of customer contained in, stored on, or integrated with any products returned to
Dtrovision for repair under warranty or not.
Warranty Limitation and Exclusion
Dtrovision shall have no further obligation under the foregoing limited warranty if the
product has been damaged due to abuse, misuse, neglect, accident, unusual physical or
electrical stress, unauthorized modifications, tampering, alterations, or service other
than by Dtrovision or its authorized agents, causes other than from ordinary use or
failure to properly use the Product in the application for which said Product is intended.

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1-9 Troubleshooting
Problem
Solution
Distribution Amplifier
does not operate
Make sure the 5V power is plugged in the back of the unit.
Check to see if the power LED light is on.
No picture(or signal)
Or Poor picture
1. In case your video source is HDCP enabled, make sure
your video display (HDTV) is HDCP compliant.
2. If you are using copper based DVI cable, overall length of
the cables (length of the cable from video source to switch
and length of the cable from switch to display) should not
exceed 20ft. Exceeding 20ft. with copper based cables will
result in no or poor picture quality. To extend beyond 20ft,
please use fiber optical DVI extension cables such as
PureLink OC series.
3. Use high quality DVI cables.
4. If you are using computers, try other refresh rate
settings. Most HDTV’s have refresh rate of 48Hz and
computer’s video cards are usually set at higher refresh
rate. Try lower refresh rates.
5. Make sure all DVI connectors are tightly secured to all
DVI ports. Loosened screws on the DVI connectors will
result in no or poor picture.
6. Turn off all equipments (video source, switch and HDTV)
and restart all equipments.
Incorrectly sized picture
/resolution or No picture
Please remember that your video source will only transmit
one resolution setting. To connect varying resolution
displays (1920x1200 resolution display and 1024 x 768
resolution display) the resolution setting of your video
source must be set to the lowest resolution setting (1024 x
768).