StarTech.com ST122DVI Manual

2 Port DVI Video Splitter
ST122DVI
Instruction Guide
The Professionals’ Source For Hard-to-Find Computer Parts
DVI SSPLITTER
* Actual product may vary from photo

FCC COMPLIANCE STATEMENT
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

1
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operation for Cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Input/Output Signal Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2
Introduction
Thank you for purchasing a StarTech.com two Port DVI Video Splitter/Distribution
Amplifier for your desktop computer or workstation. The ST122DVI offers the highest
resolution on your flat screen display or projector and allows you to connect a digital
computer to two DVI compatible monitors or projectors. The DVI Video Splitter is ideal
for Conference rooms, A/V Professionals, Graphic Designers, Airport, Kiosk, Military,
Government and Educational training centers.
Features
•Eliminates signal attenuation and distortion
•Supports high digital resolution of up to 1600 x 1200 pixels
•Extends 2 DVI compatible displays up to 30 feet from your computer
•Weighs less than a pound for easy transportation and storage
•Complies with the DVI 1.0 standard established by DDWG
•Backed by StarTech.com’s one-year warranty
Before You Begin
To ensure a quick and easy device installation, please read this section carefully before
installing the splitter.
Contents
This package should contain:
•1x DVI Splitter
•1x power adapter (DC 7.5V 1.5A)
•2x rack rails

3
Installation
1. Turn off the power to the primary computer and all monitors.
2. Connect a DVI male extension cable from the primary computer’s “Video out” port to
the “Video in” port on the back of the DVI splitter.
3. Take the DVI male/female extension cables from the monitors and plug into the “DVI
out 1” and “DVI out 2” ports on the back of the splitter.
4. Connect the input power jack to the back of the DVI splitter and plug the power
adapter into the wall or power bar. Check to see if the power LED light is active on
the front of the DVI splitter.
5. Turn on the primary computer and all monitors.
NOTE: If you install the DDC monitor for the splitter, the rest of the monitors must be
the same resolution as the DDC monitor.
Operation for Cascade:
If you need to add more than two monitors, you need to attach an additional splitter box.
1. Connect a DVI male/male extension cable from the “DVI out 1” port of the first
DVI splitter box to the “Video in” port of your second DVI splitter box.
2. Connect the input power jack to the back of the DVI splitter and plug the power
adapter into the wall or power bar. Check to see if the power LED light is active on
the front of each DVI splitter.
3. Turn on the primary computer and all monitors.
NOTE: Even though you can cascade the splitters, the image might become unstable if
you cascade too many tiers of splitters.

4
Technical Specifications
Video In Ports 1
Video Out Ports 2
Video Bandwidth 25-265 MHz (VGA - UXGA)
Maximum Resolution 1600 x 1200 @60Hz
Cable Distance Device to Monitor - 33 ft ( 10m)
Connectors Input - 1 x 24-pin DVI-I
Output - 2 x 24 pin DVI-I
LED Indicators 1 x Power
Power Adaptor 7.5V DC (1.5A)
System Requirements Computer with a DVI enabled
graphics card
Dimensions 7.8“ x 2.9“ x 1.65“
(L x W x H) (200 mm x 75 mm x 42 mm)
Weight 1.3 lbs (620 Grams)
Standards DVI 1.0 by DDWG
Safety Standards FCC and CE

5
Input/Output Signal Specifications
Pin# Signal Pin# Signal
1T.M.D.S Data 2- 16 Hot Plug Detect
2T.M.D.S Data 2+ 17 T.M.D.S Data 0-
3T.M.D.S Data 2/4
Shield 18 T.M.D.S Data 0+
4T.M.D.S Data 4- 19 T.M.D.S Data 0/5
Shield
5T.M.D.S Data 4+ 20 T.M.D.S Data 5-
6DDC Clock 21 T.M.D.S Data 5+
7DDC Data 22 T.M.D.S Clock Shield
8Analog Vert. Sync 23 T.M.D.S Clock+
9T.M.D.S Data 1- 24 T.M.D.S Clock-
10 T.M.D.S Data 1+
11 T.M.D.S Data 1/3
Shield C1 Analog Red
12 T.M.D.S Data 3- C2 Analog Green
13 T.M.D.S Data 3+ C3 Analog Blue
14 +5V Power C4 Analog Horz Sync
15 GND C5 Analog Ground
PIN 17 PIN 24
PIN 1 PIN 8
C3
C1 C2
C4
C5

6
Technical Support
The following technical resources are available for this StarTech.com product:
On-line help:
We are constantly adding new information to the Tech Support section of our web site. To
access this page, click the Tech Support link on our homepage, www.startech.com. In the
tech support section there are a number of options that can provide assistance with this
product.
Knowledge Base - This tool allows you to search for answers to common issues using
key words that describe the product and your issue.
FAQ - This tool provides quick answers to the top questions asked by our customers.
Downloads - This selection takes you to our driver download page where you can
find the latest drivers for this product.
Call StarTech.com tech support for help:
USA/Canada: 1-519-455-4931
UK/Ireland/Europe: 00-800-7827-8324
Support hours: Monday to Friday 9:00AM to 5:00PM EST (except holidays)
Warranty Information
This product is backed by a one-year warranty. In addition, StarTech.com warrants its
products against defects in materials and workmanship for the periods noted,
following the initial date of purchase. During this period, the products may be
returned for repair, or replacement with equivalent products at our discretion. The
warranty covers parts and labor costs only. StarTech.com does not warrant its products
from defects or damages arising from misuse, abuse, alteration, or normal wear and
tear.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or their
officers, directors, employees or agents) for any damages (whether direct or indirect,
special, punitive incidental, consequential, or otherwise), loss of profits, loss of business,
or any pecuniary loss, arising out of or related to the use of the product exceed the actual
price paid for the product.
Some states do not allow the exclusion or limitation of incidental or consequential
damages. If such laws apply, the limitations or exclusions contained in this statement
may not apply to you.

Revised: November 27, 2003