Gefen HDMI-144 User manual

1:4 Distribution Amplifier
For d
Model # EXT-HDMI-144
USER MANUAL
www.gefen.com

ASKING FOR ASSISTANCE
Technical Support:
Telephone [phone]
[phone]
Fax [phone]
Technical Support Hours:
8:00 AM to 5:00 PM Monday through Friday PST
Write To:
Gefen Inc.
C/O Customer Service
20600 Nordhoff St.
Chatsworth, CA 91311
[email protected]
www.gefen.com
Notice
Gefen Inc. reserves the right to make changes in the hardware, packaging and any
accompanying documentation without prior written notice.
1:4 Distribution Amplifier For HDMI is a trademark of Gefen Inc.
HDMI™ is a trademark of HDMI.org
© 2008 Gefen Inc., All Rights Reserved

TABLE OF CONTENTS
Introduction / Operation Notes1
Features2
Panel Descriptions3
Connecting and Operating the 1:4 HDMI Distribution Amplifier For HDMI4
Dip Switch Guidelines5
Specifications6
Warranty7

The Gefen 1:4 HDMI Distribution Amplifier is the perfect solution for anyone who
needs to send one source of digital high definition video to multiple displays at the
same time. It supports all HDMI equipment, such as DVD players and satellite set
top boxes and all HDMI displays. In operation, the digital video source is connected
to the distribution amplifier’s one input while four HDMI outputs are available to be
used in part or in full. Once the unit is connected and powered, your source can be
distributed up to four digital displays at the same time.
How It Works
Simply connect your HDMI video source to the 1:4 HDMI Distribution Amplifier’s
input using the supplied HDMI cable. Then connect up to four HDMI displays to
the unit’s four HDMI outputs. Once connected and powered, your source can be
seen on all four displays at the same time. When two or more 1:4’s are connected
together, you can create a larger distribution system.
INTRODUCTION
1
READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE 1:4 DISTRIBUTION AMPLIFIER FOR HDMI
• Display information from the display connected to HDMI output port 1 is sent
back to the source. Therefore, all other displays connected to the 1:4
Distribution Amplifier For HDMI must be capable of accepting the timings
and resolutions of the display that is connected to HDMI output port 1. It is
recommended that the display with the lowest native resolution be connected
to HDMI output port 1. This is to ensure that a compatible video signal will be
able to be displayed on all connected monitors.
• HDMI/HDCP compliant
• Compatible with all HDMI and DVI* displays
*When used with a HDMI to DVI adapter
OPERATION NOTES

FEATURES
Features
Connects up to four HDMI/DVI* displays at the same time to one video source
Allows simultaneous display
Supports resolutions up to 1080p, 2K, and 1920 x 1200
Extends the range of HDMI compliant devices by equalizing and re-clocking the
HDMI signal
HDMI/HDCP compliant
Includes:
(1) 1:4 DistributionAmplifier For HDMI
(1) 6 Ft HDMI cable (M-M)
(1) 5V DC Power Supply
(1) Set of Rack Ears
(1) Users Manual
*When used with a HDMI to DVI adapter
•
•
•
•
•
2

PANEL DESCRIPTIONS
3
Front Panel
Back Panel
Power LED
Indicator
5V DC Power
Input
HDMI Output
4
HDMI Output
2
HDMI Input
HDMI Output
3
HDMI Output
1* *See Note on page 4

CONNECTING AND OPERATING
THE 1:4 DISTRIBUTION AMPLIFIER FOR HDMI
4
Connect the supplied cable from the HDTV HDMI source into the HDMI input port
of the 1:4 DistributionAmplifier For HDMI.
Connect the user supplied cable(s) from your display(s) into the HDMI output
port(s) of the1:4 Distribution Amplifier For HDMI.
Plug the 5V DC power supply into the 1:4 Distribution Amplifier For HDMI.
Note: Display information from the display connected to HDMI output port 1 is sent
back to the source. Therefore, all other displays connected to the 1:4 Distribution
Amplifier For HDMI must be capable of accepting the timings and resolutions of
the display that is connected to HDMI output port 1. It is recommended that the
display with the lowest native resolution be connected to HDMI output port 1.
This is to ensure that a compatible video signal will be able to be displayed on all
connected monitors.
1
2
3
How to Connect the 1:4 Distribution Amplifier For HDMI

DIP SWITCH GUIDELINES
5
Extended display identification data (EDID) is a data structure provided by a
display to describe its capabilities to any source that asks for it. The EDID includes
manufacturer name, product type, timings supported by the display, display size,
luminance data, (for digital displays only) pixel mapping data, supported audio
channels and formats. This information is used by the source to cater its output to
resolutions and audio formats that are supported by the display.
Additional EDID modes are available and configured using a combination of dip
switches 1, 2, and 5. Please refer below for the different EDID modes.
To access the Dip Switches, remove all screws from the bottom and sides of the
Gefen unit. Carefully slide the unit apart. The 8 Bank of Dip Switches are located
on the main PCB. Once adjustments are complete, slide the unit back together and
replace all removed screws.
EDID Mode 0 (Switch 1=OFF Switch2=OFF Switch5=ON)
-EDID is copied from the first HDMI port
EDID Mode 1 (Switch 1=ON Switch2=OFF Switch5=ON)
-Same as Mode 0 and adds basic audio support
EDID Mode 2 (Switch 1=OFF Switch2=ON Switch5=ON)
-Same as Mode 0 and adds full audio support
EDID Mode 3 (Switch 1=ON Switch2=ON Switch5=OFF)
-EDID is generated based on the common video and audio features of all of the
connected devices
EDID Mode 4 (Switch 1=OFF Switch2=ON Switch5=OFF)
-Same as Mode 3 and adds basic audio support
EDID Mode 5 (Switch 1=ON Switch2=OFF Switch5=OFF)
-Same as Mode 3 and adds full audio support
EDID Mode 6 (Switch 1=OFF Switch2=OFF Switch5=OFF) DEFAULT
-EDID is generated based on the common video features of all of the connected
devices and the combined audio features of all of the connected devices
DIP SWITCH
EDID GUIDE

6
SPECIFICATIONS
Video Amplifier Bandwidth ............................................................................ 165 MHz
Input Video Signal ................................................................................... 1.2 Volts p-p
Input DDC Signal .............................................................................. 5 Volts p-p (TTL)
Single Link Range ................................................................... ...1080p / 1920 x 1200
Input Connector Type .................................................................. HDMI Type A 19 Pin
Output Connector Type ................................................................HDMI Type A 19 Pin
Power Consumption .......................................................................... 10 Watts (max.)
Power Supply ................................................................................................. 5V DC
Dimensions .......................................................................... 12”W x 1.25”H x 4.125”D
Shipping Weight ................................................................................................. 5 Lbs