Gefen GTB-HD4K2K-444-BLK User guide

1
Application Guides
4K Ultra HD HDMI Extenders, Splitters & Matrixes • KVM Over IP • Wireless Extenders for HDMI

Route Eight 4K Ultra HD Sources to Eight Displays
Eight in. Eight Out.

Features:
• Compact, wall-mountable solution
• Intuitive, easy-to-use web server
• Simplied IP conguration through Gefen Syner-G™ software
• Part of the complete line of Gefen 4K Ultra HD products
Route Eight 4K Ultra HD Sources to Eight Displays
Eight in. Eight Out.

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Contents
Extenders..................................................................................................... 5
Application 1 - 4K Ultra HD Extender for HDMI with POL, 2-Way IR, .......................................... 5
Application 2 - 4K Ultra HD ELR Extender for HDMI with 2-Way IR, RS-232, ............................... 6
Application 3 - 4K Ultra HD ELR-POL Extender for HDMI with 2-Way IR, RS-232, Ethernet ....... 7
Application 4 - Using Splitters & Extenders for Remote Display Clusters with IP Control......... 8
Settings............................................................................................................................................. 9
Connections.................................................................................................................................. 10
Features & Benets ....................................................................................................................... 10
Splitters ...................................................................................................... 13
Application 1 - Single 4K Ultra HD Source to Two 4K Ultra HD Displays................................... 13
Application 2 - Two-Way Splitters Daisy-Chained (10 Displays) .............................................. 14
Application 3 - Four-Way Splitters Daisy-Chained (31 Displays) .............................................. 15
Application 4 - Four-Way Splitters Cascaded (124 Displays)................................................... 16
Application 5 - Using Splitters & Extenders for Remote Display Clusters with IP Control....... 17
Settings........................................................................................................................................... 18
Features & Benets ....................................................................................................................... 18
Connections & Controls............................................................................................................... 19
Matrixes ..................................................................................................... 21
Application 1 - 4x2 4K Ultra HD Matrix for HDMI ........................................................................ 21
Application 2 - 4x4 4K Ultra HD Matrix for HDMI ....................................................................... 22
Application 3 - 6x2 4K Ultra HD Matrix with 2 Optical Audio Outs .......................................... 23
Application 4 - 8x8 4K Ultra HD Matrix for HDMI ........................................................................ 24
Settings - GTB-HD4K2K-442/444/642-BLK..................................................................................... 25
Settings - GTB-HD4K2K-848-BLK.................................................................................................... 25
Web Interface............................................................................................................................... 26
Features & Benets ....................................................................................................................... 26
Connections & Controls............................................................................................................... 27
KVM over IP............................................................................................... 29
Application 1 - Direct Connect KVM Extension ........................................................................ 29
Application 2 - KVM & Video Extension - Extended Range..................................................... 30
Application 3 - Video Distribution - Video over IP..................................................................... 30
Application 4 - Video Distribution - Daisy Chain ....................................................................... 31
Application 5 - KVM & Video Matrix over IP (Combined Mode) ............................................ 32
Application 6 - KVM & Video Matrix over IP (Separate Mode)............................................... 33
EXT-CU-LAN.................................................................................................................................... 34
Features & Benets ....................................................................................................................... 34
Connections & Controls............................................................................................................... 35
Wireless Extenders for HDMI .................................................................... 37
Application - Conference Room................................................................................................ 37
Features & Benets ....................................................................................................................... 38
Long Range Wireless HDMI Extender.......................................................................................... 38
Connections & Controls............................................................................................................... 39

5
Extenders
4K Ultra HD HDMI Extenders
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4K ULTRA HD SOURCE
SENDER
RECEIVER
4K ULTRA HD DISPLAY
SOURCE UNIT’S
IR REMOTE
IR EXTENDER
Source
Control
From
IR Remote
Remote Control
To HD Source
HDMI
From Source
To Sender
HDMI
From Receiver
To HD Display
4K Ultra/4K Cinema HD, IR, Multichannel Audio up to 130’ via CAT-5e
1080p Full HD, IR, Multichannel Audio up to 230’ via CAT-6, 198’ via CAT-5e
ULTRA HD SOURCE
4K Ultra HD Extender
w/ POL and 2-way IR S
IR Out
IR InHDMIPower24V DC
Link
4K Ultra HD Extender
w/ POL and 2-way IR R
IR Out
IR ExtHDMI
Link
TV
SAT
DVD
CD
INT
TNR
MP3
AUD
VOL
-
VOL
+
CH
-
CH
+
3
2
1
6
5
4
9
8
7
#
0
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LIVE
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GUIDE
INFOMENU
EXIT
OFFON
CAT-5e (or better) Cable
HDMI Cable
IR Control Path
IR EMITTER
Gefen’s implementation of HDBaseT™ Technology
extends the possibilities of remote Ultra HD display
installation. HDMI resolutions up to 4K Ultra HD can
be combined with multichannel audio, 2-way
IR, RS-232 and Ethernet to assure full video signal
quality, audio content and source control.
4K resolutions can be extended up to 330 feet
(100m) on a single CAT-5e, 1080p Full HD up to 495
feet (150m). The compact chassis of the Senders
and Receivers connect with a single CAT5e/6
cable and use a single power supply to increase
design options and simplify installation.
Application 1 - 4K Ultra HD Extender for HDMI with POL, 2-Way IR,
4K up to 130' (40m), 1080p Full HD up to 230' (70m)
The illustration shows a typical application for a Gefen 4K Ultra HD Extender. This application features
the Gefen GTB-HDBT-POL-BLK 4K Ultra HD Extender. The 4K Ultra HD source is connected to the Sender
via HDMI Cable. 4K Ultra/4K Cinema HD video, LPCM 7.1 channel audio, Dolby® TrueHD, Dolby Digital®
Plus and DTS-HD Master Audio™ and 2-way IR are then transmitted over CAT-5e (min) cable to the
Receiver up to 130 feet (40m) away. 1080p Full HD can be transmitted up to 230 feet (70m) via CAT-6 or
up to 198 feet (60m) via CAT-5e. The 2-way IR allows control of the source from the Receiver location, or
control of the display (display ON/OFF, etc) from the Sender location...all over a single CAT-6/5e cable.

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Application 2 - 4K Ultra HD ELR Extender for HDMI with 2-Way IR, RS-232,
4K up to 330' (100m), 1080p Full HD up to 495' (150m)
Gefen 4K Ultra HD Extenders
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4K ULTRA HD SOURCE
SENDER
RECEIVER
4K ULTRA HD DISPLAY
IR EXTENDER
Source
Control
From
IR Remote HDMI
From Source
To Sender
HDMI
From Receiver
To HD Display
4K Ultra*/4K Cinema*/1080p Full HD**, up to 330’ (100m) via CAT-5e
1080p Full HD* up to 495’ (150m) via CAT-5e
ULTRA HD SOURCE
4K Ultra HD Extender
w/ POL and 2-way IR S
IR Out
IR InHDMIPower24V DC
Link
4K Ultra HD Extender
w/ POL and 2-way IR R
IR Out
IR ExtHDMI
Link
IR EMITTER
ELR-POL Extender
w/ RS-232 and 2-Way IR
4K Ultra HD S
IR In
IR Out RS-232 Link
HDMIPower24V DC
®
ELR-POL Extender
w/ RS-232 and 2-Way IR
4K Ultra HD R
IR In
IR Out RS-232 Link
HDMIPower24V DC
®
RS-232 CONTROLLER
RS-232 CONTROLLED
DEVICE
SOURCE UNIT’S
IR REMOTE
Remote Control
To HD Source
TV
SAT
DVD
CD
INT
TNR
MP3
AUD
VOL
-
VOL
+
CH
-
CH
+
3
2
1
6
5
4
9
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OFFON
CAT-5e (or better) Cable
HDMI Cable
RS-232 Cable
IR Control Path
* 8-Bit Color
** 12-Bit Deep Color
This application, featuring the GTB-UHD2IRS-ELRPOL-BLK, adds additional transmission range and
RS-232 control to 4K Ultra HD and 1080p Full HD extension.
This ELR (Extra Long Range) 4K Ultra HD Extender with POL (Power Over Line) can transmit 4K Ultra/4K
Cinema HD video, LPCM 7.1 channel audio, Dolby® TrueHD, Dolby Digital® Plus and DTS-HD Master
Audio™, RS-232 and 2-way IR up to 330 feet (100m) over a single CAT-5e cable. 1080p Full HD can be
transmitted up to 495 feet (150m) via CAT-5e.
For greater control exibility, in addition to 2-way IR, the GTB-UHD2IRS-ELRPOL-BLK also provides RS-232
control extension. Elements of automation can be incorporated by connecting an RS-232 controller
to the Sender and transmitting RS-232 commands to the Receiver for control of RS-232 devices
located near the Receiver.
In addition to RS-232 control, 2-way IR allows control of the Ultra HD source from the Receiver
location, or control of the display, (display ON/OFF, etc) or other IR controlled devices from the
Sender location.

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Application 3 - 4K Ultra HD ELR-POL Extender for HDMI with Ethernet,
2-Way IR, RS-232, 4K up to 330' (100m), 1080p Full HD up to 495' (150m)
Gefen 4K Ultra HD Extenders
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4K ULTRA HD SOURCE
SENDER
RECEIVER
4K ULTRA HD DISPLAY
IR EXTENDER
Source
Control
From
IR Remote
HDMI
From Source
To Sender
HDMI
ULTRA HD SOURCE
IR EMITTER
RS-232 CONTROLLED DEVICE
SOURCE UNIT’S
IR REMOTE
Remote Control
To HD Source
TV
SAT
DVD
CD
INT
TNR
MP3
AUD
VOL
-
VOL
+
CH
-
CH
+
3
2
1
6
5
4
9
8
7
#
0
*
LIVE
LIST
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INFOMENU
EXIT
OFFON
ELR-POL Extender S
4K Ultra HD
w/ RS-232, Ethernet, and 2-way IR
®
ELR-POL Extender R
4K Ultra HD
w/ RS-232, Ethernet, and 2-way IR
®
IP/RS-232 CONTROLLER
POWER 1 2 3 4 5 6WAN
POWER 1 2 3 4 5 6WAN
Ethernet Switch to
Smart TVs or other IP Devices
RS-232 From Controller To Sender
RS-232 From Receiver
To RS-232 Device
Wi-Fi ROUTER
ETHERNET SWITCH
Extender Link
HDMI, Ethernet,
2-way IR,
RS-232,
Receiver Power up to
330’/100m (4K UHD)
495’/150m (1080p)
Ethernet
From Router
To Sender
Ethernet
LAN Connection
Internet
Ethernet
Link
Link
CAT-5e (or better) Cable (Extender Link)
CAT-5e (or better) Cable (Ethernet)
HDMI Cable
RS-232 Cable
IR Control Path
The EXT-UHD-CAT5-ELRPOL includes all of the features shown in the previous applications...including
ELR (Extra Long Range)...and adds Ethernet extension. This now allows extending 4K Ultra HD
(or 1080p Full HD), HBR (High Bit Rate) lossless digital audio, RS-232, 2-way IR and Ethernet...all on a
single shielded CAT-5e/6 cable making 10/100BaseT reliable, wired Ethernet available at the remote
location without the need to run a separate cable.

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Application 4 - Using Splitters & Extenders
for Remote Ultra HD Display Clusters with IP Control
4K Ultra HD
1:8 Splitter
for HDMI
Out 1
Out 2
Out 3
Out 4
Out 5
Out 6
Out 7
Out 8
In
Power
5V DCUSB
Int
Ext
EDID
Audio
FST
2ch
Multi-ch
Fast
Slow
4K UHD SOURCE
4K UHD SOURCE
Link Et hernet IR In/Ext
IR Out
EXT-UHD-CAT5-ELRPOLS
Power
Link
24V DC
HDMI In
RS-232
Link Et hernet IR In/Ext
IR Out
EXT-UHD-CAT5-ELRPOLR
Power
Link
24V DC
HDMI Out
RS-232
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
4K ULTRA HD DISPLAY
POWER 1 2 3 4 5 6WAN
4K ULTRA HD DISPLAY
4K ULTRA HD DISPLAY 4K ULTRA HD DISPLAY
Ethernet Switch to
Smart TVs or other IP Devices
GTB-HD4K2K-144C-BLK
Remote Splitter
Receiver HDMI Out
to Remote Splitter
EXT-UHD-CAT5-ELRPOLR
RECEIVER
EXT-UHD-CAT5-ELRPOLS
SENDER
Extender Link
HDMI, Ethernet, 2-way IR,
RS-232, Receiver Power up to
330’/100m (4K UHD)
495’/150m (1080p)
Ethernet
Ethernet
IP System Controller
Wi-Fi
Router
GTB-HD4K2K-148C-BLK
Head-End Splitter
HDMI Out to Additional
Displays, Splitters, Extenders
HDMI From Splitter To DisplaysHDMI From Splitter To Displays
HDMI From Head-End Splitter/Source
to Extender/Remote Splitter/Displays
D-Lux Hotel
Gefen Training
System Integration
D-Lux Hotel
Gefen Training
System Integration
D-Lux Hotel
Gefen Training
System Integration
D-Lux Hotel
Gefen Training
System Integration
POWER 1 2 3 4 5 6WAN
HDMI From Source
to Head-end Splitter
CAT-5e (or better) Cable (Extender Link)
CAT-5e (or better) Cable (Ethernet)
HDMI Cable
This application shows how to incorporate Gefen splitters and extenders to create a 4K Ultra HD
distribution system with remote 4K Ultra HD display clusters and IP (and/or RS-232/2-way IR) control for
Smart TVs or other IP, RS-232 and IR controlled devices.
Inserting a Gefen Extender, EXT-UHD-CAT5-ELRPOL shown, between a Head-end Splitter and Remote
Splitters can extend HDMI, Ethernet, 2-way IR, RS-232 and Receiver Power to create remote Ultra
HD display clusters for video distribution or digital signage in bars, hotels or other commercial
applications.
Gefen 4K Ultra HD Extenders

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Gefen 4K Ultra HD Extenders
Settings
ON
1
ON
1
GTB-HDBT-POL-BLK
The GTB-HDBT-POL-BLK is designed for fast, clean installation and stable, reliable performance.
Just hook it up and it's ready to go!
GTB-UHD2IRS-ELRPOL-BLK Receiver
ON SAB
1 2 3 4
ON SAB
1 2 3 4
EXT-UHD-CAT5-ELRPOL Sender
ON
1 2
ON
1 2
EXT-UHD-CAT5-ELRPOL Receiver
EXT-UHD-CAT5-ELRPOL
EDID Management - When Sender Switch 1 is in the ON
position, all video and audio features of the connected
device (display or other sink device) will be passed through
to the source. When Sender Switch 1 is in the OFF position,
the Sender copies and then modies the downstream EDID
to support only up to 1080p60, 8-bit color in 'long-reach'
mode.
HPD Mode - Hot Plug Detect is an HDMI feature that
senses if the HDMI cable has been disconnected from the
source or display (sink device). When Sender Switch 1 is in
the OFF position, HPD will toggle, depending on the HPD
status of the display (sink) or source device. When Sender
Switch 1 is in the ON position, HPD is always high, even
when the display is hot-plugged (disconnected from, then
reconnected to the source device).
HDBT (HDBaseT) Mode - HDBT Normal Mode (default),
Sender Switch 3 OFF, allows all resolutions up to 4K x 2K
to be extended up to 330 feet (100m). HDBT Long-Reach
Mode, Sender Switch 3 ON, allows resolutions up to 1080p
Full HD @ 8-bit color to be extended up to a maximum
distance of 495 feet (150m).
RS-232 Mode - Toggles between RS-232 pass-through
mode and service mode. When Sender Switch 4 and
Receiver Switch 1 are in the OFF position, RS-232 data is
passed between the Sender and Receiver units. When
Sender Switch 4 and Receiver Switch 1 are in the ON
position, the Sender and Receiver are set for rmware
update.
GTB-UHD2IRS-ELRPOL-BLK
Long Reach Mode - In the ON position, resolutions up to
1080p Full HD can be extended to a maximum distance of
495 feet (150m). In this conguration, color depth is limited
to 8-bit color. In the OFF position (default), all resolutions up
to 4K x 2K can be extended up to 330 feet (100m). 1080p
Full HD up to 12-bit Deep Color can also be extended up
to 330 feet (100m) in this conguration.

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Gefen 4K Ultra HD Extenders
Connections
Power
Locking
HDMI In
Power/Status
LED IR Int
IR Out Link
GTB-HDBT-POL-BLK S
Locking
HDMI Out
Power/Status
LED IR Ext
IR Out Link
Power
SENDER RECEIVER
• Extends 4K Ultra HD (3840 x 2160 @ 60Hz 4:2:0,
or 30Hz, 4:4:4 up to 130 feet (40m) over a
single CAT-5e cable (8-bit color)
• Extends 4K Cinema HD (4096 x 2160 @ 24 or
30Hz 4:4:4), up to 130 feet (40m) over a single
CAT-5e cable
• Extends 1080p Full HD up to 230 feet (70m)
over a single CAT-6 cable, or 198 feet (60m)
over CAT-5e
• Uses Gefen’s implementation of HDBaseT™
Technology
• Gefen POL (Power Over Line) sends power
from the Sender to the Receiver over the
same CAT5e/6 cable as the HDMI signal
• Bi-Directional IR control, HDMI 2.0, HDCP 2.2
and 1.4, 12-bit Deep Color (up to 1080p),
LPCM 7.1 audio, Dolby® TrueHD, Dolby
Digital® Plus and DTS-HD Master Audio™,
3DTV pass-through, CEC pass-through, Lip
Sync pass-through
• Allows locating a Ultra HD Display well
beyond the limit of a standard HDMI
connection...typically 15 feet
• Extends HDMI signal, multichannel audio,
bi-directional IR and power to the Receiver
via a single CAT5e/6...simplifying installation &
reducing cost
• No loss of video signal quality or multi-
channel audio content over extended run
• Bi-directional IR allows source control from
the viewing area via IR Remote and IR
control from an automation system or base
station to control the display or other devices
located near the Receiver
• Compact chassis allows surface mount of the
Sender just about anywhere in an equipment
cabinet and the Receiver behind the display
Features & Benets
GTB-HDBT-POL-BLK R
Features Benefits

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Connections
Gefen 4K Ultra HD Extenders
GTB-UHD2IRS-ELRPOL-BLK S
Power
Locking
HDMI In
Power/Status
LED IR Int
IR Out Link
RS-232
Locking
HDMI Out
Power/Status
LED IR Ext
IR Out Link
Power
RS-232
SENDER RECEIVER
GTB-UHD2IRS-ELRPOL-BLK R
• Extends 4K Ultra HD (3840 x 2160 @ 60Hz 4:2:0,
or 30Hz, 4:4:4 up to 330 feet (100m) over a
single CAT-5e cable (8-bit color)
• Extends 4K Cinema HD (4096 x 2160 @ 24
or 30Hz 4:4:4), up to 330 feet (100m) over a
single CAT-5e cable
• Extends 1080p Full HD up to 330 feet (100m)
over a single CAT-5e cable (up to 12-bit Deep
Color), or 495 feet (150m) over CAT-5e (8-bit
color)
• Uses Gefen’s implementation of HDBaseT™
Technology
• Gefen POL (Power Over Line) sends power
from Sender to Receiver over same CAT5e/6
cable as HDMI signal
• Bi-Directional IR control, RS-232, HDMI 2.0,
HDCP 2.2 and 1.4, 12-bit Deep Color (up
to 1080p), LPCM 7.1 audio, Dolby® TrueHD,
Dolby Digital® Plus and DTS-HD Master
Audio™, 3DTV pass-through, CEC pass-
through, Lip Sync pass-through
• Gefen Trademarked ELR (Extra Long Range)
technology allows 4K Ultra HD extension up to
330 feet (100m), 1080p Full HD up to 495 feet
(150m)
• RS-232 extension provides additional control
and automation options for control of RS-232
devices located near the Receiver
• Extends HDMI signal, multichannel audio,
bi-directional IR, RS-232 and power to the
Receiver via a single CAT5e/6...simplifying
installation & reducing cost
• No loss of video signal quality or multi-
channel audio content over extended run
• Bi-directional IR allows source control from
the viewing area via IR Remote and IR
control from an automation system or base
station to control the display or other devices
located near the Receiver
• Compact chassis allows surface mount of the
Sender just about anywhere in an equipment
cabinet and the Receiver behind the display
Features & Benets
Features Benefits

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Gefen 4K Ultra HD Extenders
Connections
EXT-UHD-CAT5-ELRPOL S
Link Ethernet IR In/Ext
IR Out
EXT-UHD-CAT5-ELRPOLS
Power
Link
24V DC
HDMI In
RS-232
Power
Locking
HDMI In
Power/Status
LED RS-232t
Link IR Out
Ethernet IR In
Link Ethernet IR In/Ext
IR Out
EXT-UHD-CAT5-ELRPOLR
Power
Link
24V DC
HDMI Out
RS-232
Power
Locking
HDMI Out
Power/Status
LED RS-232t
Link IR Out
Ethernet IR In
Power
SENDER RECEIVER
EXT-UHD-CAT5-ELRPOL R
• Same features as GTB-UHD2IRS-ELRPOL-BLK
with these additional features:
• Ethernet extension up to the same distance
as any given video resolution
• Advanced EDID management for HPD (Hot
Plug Detect) Mode, HDBT (HDBaseT) Mode
(long-reach mode) and RS-232 Mode for
RS-232 pass-through or Firmware Upgrade
Mode
• Bi-directional POL (Power over Line) allows
connection of power supply at Sender or
Receiver
• Same benefits as GTB-UHD2IRS-ELRPOL-BLK
with these additional benefits:
• Ethernet extension allows additional control
and automation options for control of IP
devices located near the Receiver
• Advanced EDID management provides
setup options for improved performance and
stability
• Upgradeable firmware helps assure optimal
performance and compatibility with latest
HDMI technologies
Features & Benets
Features Benefits

13
Splitters
2/4/8 Way 4K Ultra HD HDMI Splitters
5V DCUSB
Int
Ext
EDID
Power
Out 1 Out 2
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:2 Splitter
for HDMI
4K ULTRA HD DISPLAY
4K Ultra HD SOURCE
4K ULTRA HD DISPLAY
FST Mode Select
Audio Mode Select
EDID Mode Select
HDMI Out 1 HDMI Out 2
HDMI In
4K UHD SOURCE
HDMI Cable 15’ Max HDMI Cable 15’ Max
Source HDMI Out
to Splitter In
Gefen 4K Ultra HD Splitters route a single 4K
Ultra HD source to multiple 4K Ultra HD displays.
Available in 2, 4 and 8-way congurations, these
splitters provide simple and reliable solutions for
residential and commercial applications. Split
a single Ultra HD source to multiple 4K Ultra HD
displays in adjoining common areas.
Mount two 4K Ultra HD displays at either end
of a bar. Provide digital signage messaging in
hotel lobbies and larger facilities. All models can
split, daisy-chain and cascade, making Gefen
splitters the high performance and capable
choice for any small or large 4K Ultra HD video
distribution system.
Application 1 - Single 4K Ultra HD Source to Two 4K Ultra HD Displays
The illustration shows the most basic application for a Gefen 4K Ultra HD Splitter. This application features a
Gefen GTB-HD4K2K-142C-BLK two-way splitter distributing a single 4K Ultra HD source to two 4K Ultra HD displays.
This type of application is perfect for residential applications in common areas such as an adjoining kitchen
and family room. It is also a simple and reliable application for a small sports bar or other lounge area where a
single 4K Ultra HD video source is going to be shared on two displays.

14
Application 2 - Two-Way Splitters Daisy-Chained
For Digital Signage (10 Displays)
Gefen 4K Ultra HD Splitters
5V DCUSB
Int
Ext
EDID
Power
Out 1 Out 2
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:2 Splitter
for HDMI
5V DCUSB
Int
Ext
EDID
Power
Out 1 Out 2
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:2 Splitter
for HDMI
5V DCUSB
Int
Ext
EDID
Power
Out 1 Out 2
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:2 Splitter
for HDMI
4K UHD DIGITAL SIGNAGE MEDIA PLAYER
4K ULTRA HD DISPLAY
Splitter HDMI Out
to Display
5V DCUSB
Int
Ext
EDID
Power
Out 1 Out 2
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:2 Splitter
for HDMI
D-Lux Hotel
Restaurant Open
All Day, Every Day
D-Lux Hotel
Restaurant Open
All Day, Every Day
D-Lux Hotel
Restaurant Open
All Day, Every Day
D-Lux Hotel
Restaurant Open
All Day, Every Day
4K ULTRA HD DISPLAY 4K ULTRA HD DISPLAY 4K ULTRA HD DISPLAY
BRAND X
4K UHD Digital Signage Media Player
Splitter 1 Out
to Splitter 2 In
Splitter 2 Out
to Splitter 3 In
Splitter 3 Out
to Splitter 4 In
To
Additional Splitters
HDMI Cable 15’ (4.5m) MaxHDMI Cable 15’ (4.5m) Max HDMI Cable 15’ (4.5m) Max
Source HDMI Out
to Splitter 1 In
This application distributes a single 4K Ultra HD video source to multiple 4K Ultra HD Displays by daisy-
chaining multiple Gefen GTB-HD4K2K-142C-BLK two-way splitters. The source in the example is a 4K
Ultra HD digital signage media player, but could be any Ultra HD or HD source. The example shows an
application for the D-Lux Hotel lobby, displaying information about the day's schedule of events, with
the current screen calling attention to the hotel restaurant being open all day.
This is a very simple application to design and install. Simply connect the HDMI output on the source
to the HDMI input on Splitter 1. Connect one HDMI Out on Splitter 1 to a 4K Ultra HD display. Connect
the other HDMI Out on Splitter 1 to the HDMI In on Splitter 2 and repeat for the number of required
displays. Each 'split' in a daisy-chain or cascade system (page 4) is called a 'layer'. The maximum
number of layers for Gefen GTB 4K UHD Series Splitters is ten. The maximum number of displays for
this application is ten. For more displays, daisy-chain four-way or eight-way splitters, (next page) or
use just about any combination of two, four and eight-way splitters to accommodate the number of
displays needed to show a single source.

15
Application 3 - Four-Way Splitters Daisy-Chained
For Digital Signage (31 Displays)
Gefen 4K Ultra HD Splitters
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
4K UHD DIGITAL SIGNAGE MEDIA PLAYER
4K ULTRA HD DISPLAYS
Splitter HDMI Outs
to Displays
4K ULTRA HD DISPLAYS 4K ULTRA HD DISPLAYS
4K ULTRA HD DISPLAYS
BRAND X
4K UHD Digital Signage Media Player
Splitter 2 Out to Splitter 3 InSplitter 1 Out to Splitter 2 In
SPLITTERS/LAYERS 4-9
Source HDMI Out
to Splitter 1 In
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
Splitter HDMI Outs
to Displays
Splitter HDMI Outs
to Displays
Splitter HDMI Outs
to Displays
SPLITTER/LAYER 1 SPLITTER/LAYER 2 SPLITTER/LAYER 3 SPLITTER/LAYER 10SPLITTERS/LAYERS 4-9
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
D-Lux Hotel
Gefen Training
8:00AM - Splitters
This application shows multiple Gefen GTB-HD4K2K-144C-BLK four-way splitters in a daisy-chain
application. In this application, each splitter uses three outputs to feed three displays with the fourth
output feeding the next splitter. The last splitter in the system can use all four outputs to feed displays.
This application is also easy to design and install, and the four-way splitters will allow connection of
up to 31 displays. If more displays are required, Gefen GTB-HD4K2K-148C-BLK eight-way splitters can
be congured in a similar conguration with each splitter feeding up to seven displays, with the last
splitter being able to feed up to eight displays, for a total of up to 71 displays.
Ultimately, just about any combination of two, four and eight-way splitters can be used to
accommodate the required number of displays. For applications that require even more displays...
see the next page...

16
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
4K UHD DIGITAL SIGNAGE MEDIA PLAYER
GTB-HD4K2K-144C-BLK
SPLITTERS
Main Splitter
HDMI Outs
to Sub Splitters
HDMI Ins
GTB-HD4K2K-144C-BLK
SPLITTERS
GTB-HD4K2K-144C-BLK
SPLITTERS
BRAND X
4K UHD Digital Signage Media Player
Splitter 2 Out
to Splitter 3 In
Splitter 1 Out to Splitter 2 In
LAYERS 3-9
Source HDMI Out
to Splitter 1 In
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4KUltra HD
1:4Splitter
forHDMI
Out
3
Out
1
Out
4
Out
2
Main Splitter
HDMI Outs
to Sub Splitters
HDMI Ins
LAYER 1 LAYER 2 LAYER 10LAYERS 3-9
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
Splitter HDMI Outs
to Displays
Splitter HDMI Outs
to Displays
HDMI In
From Splitter Out
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
5VDCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
The illustration shows GTB-HD4K2K-144C-BLK four-way splitters cascaded to create a 4K Ultra HD distribution
system for up to 124 displays.
In this application the ten 'main' splitters are daisy-chained as shown in Application 3 but his time, rather than
feeding three displays and the next splitter in the chain, each of the daisy-chained splitters is feeding three
additional 'sub' splitters and the next splitter in the chain.
The enlarged detail shows how each of the 'sub' splitters would then feed up to four displays.
In the same conguration, Gefen GTB-HD4K2K-148C-BLK eight-way splitters, would net a total of 224 displays.
But what do we do when the displays are needed in locations farther than the typical, even daisy-chained runs
of HDMI cable will allow? Keep reading...
Gefen 4K Ultra HD Splitters
Application 4 - Four-Way Splitters Cascaded
in a 124 Display System

17
Application 5 - Using Splitters & Extenders
for Remote Ultra HD Display Clusters with IP Control
Gefen 4K Ultra HD Splitters
4K Ultra HD
1:8 Splitter
for HDMI
Out 1
Out 2
Out 3
Out 4
Out 5
Out 6
Out 7
Out 8
In
Power
5V DCUSB
Int
Ext
EDID
Audio
FST
2ch
Multi-ch
Fast
Slow
4K UHD SOURCE
4K UHD SOURCE
Link Et hernet IR In/Ext
IR Out
EXT-UHD-CAT5-ELRPOLS
Power
Link
24V DC
HDMI In
RS-232
Link Et hernet IR In/Ext
IR Out
EXT-UHD-CAT5-ELRPOLR
Power
Link
24V DC
HDMI Out
RS-232
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
4K ULTRA HD DISPLAY
POWER 1 2 3 4 5 6WAN
4K ULTRA HD DISPLAY
4K ULTRA HD DISPLAY 4K ULTRA HD DISPLAY
Ethernet Switch to
Smart TVs or other IP Devices
GTB-HD4K2K-144C-BLK
Remote Splitter
Receiver HDMI Out
to Remote Splitter
EXT-UHD-CAT5-ELRPOLR
RECEIVER
EXT-UHD-CAT5-ELRPOLS
SENDER
Extender Link
HDMI, Ethernet, 2-way IR,
RS-232, Receiver Power up to
330’/100m (4K UHD)
495’/150m (1080p)
Ethernet
Ethernet
IP System Controller
Wi-Fi
Router
GTB-HD4K2K-148C-BLK
Head-End Splitter
HDMI Out to Additional
Displays, Splitters, Extenders
HDMI From Splitter To DisplaysHDMI From Splitter To Displays
HDMI From Head-End Splitter/Source
to Extender/Remote Splitter/Displays
D-Lux Hotel
Gefen Training
System Integration
D-Lux Hotel
Gefen Training
System Integration
D-Lux Hotel
Gefen Training
System Integration
D-Lux Hotel
Gefen Training
System Integration
POWER 1 2 3 4 5 6WAN
HDMI From Source
to Head-end Splitter
CAT-5e (or better) Cable (Extender Link)
CAT-5e (or better) Cable (Ethernet)
HDMI Cable
This application shows how to incorporate splitters and extenders to create a 4K Ultra HD distribution system with
remote 4K Ultra HD display clusters and IP control for Smart TVs or other IP controlled devices.
Inserting a Gefen EXT-UHD-CAT5-ELRPOL Extender between the Head-end Splitter and Remote Splitter can
extend HDMI, Ethernet, two-way IR, RS-232 and Receiver Power up to 330' (100m) for 4K Ultra/4K Cinema (8-bit)
or 1080p Full HD (12-bit Deep Color). 1080p Full HD (8-bit color) can be extended up to 495' (150m). The 2, 4 and
8-way splitters can be implemented at either the head-end or remote locations as needed.
Incorporating a third-party IP System system controller will provide discreet system-wide control of Smart TVs and
other IP controlled devices in remote locations.

18
Settings
Gefen 4K Ultra HD Splitters
Features & Benets
4K Ultra HD
1:8 Splitter
for HDMI
Out 3
Out 4
Out 7
Out 8
In
Power
5V DCUSB
Int
Ext
EDID
Audio
FST
2ch
Multi-ch
Fast
Slow
Features
• Simultaneously display a 4K Ultra HD source on up
to 2, 4 or 8 Ultra HD displays (depending on splitter
model)
• Specifically designed to support 10 layers of splitting/
cascading in large video distribution and signage
applications, supporting hundreds of displays
• Support resolutions up to 4K Cinema (4096 x 2160
@ 24 and 30 Hz), 4K Ultra (3860 x 2160 @ 60 Hz 4:2:0
color space), 1080p Full HD and 1920 x 1200 WUXGA
• 12-bit Deep Color at 1080p, 3DTV pass-through, Lip
Sync pass-through
• Fast Switching Technology (FST) speeds up HDCP
authentication
• EDID management and Audio Mode selectors for
rapid integration of source and displays
• Supports LPCM7.1, Dolby® TrueHD, Dolby Digital®
Plus and DTS-HD Master Audio™
• Field upgradeable firmware via Mini-USB port
Benets
• Flat pack surface-mountable...splitters mount
almost anywhere
• FST eliminates the lengthy HDMI authentication
process
• FST allows disconnecting, reconnecting, or
powering down HDTV displays without causing
picture loss on other displays within the same
distribution system
• EDID management allows the choice between
built-in and passed-through EDIDs
• Daisy-chain/cascade capability allows connection
of up to hundreds of displays
• Incorporating splitters with extenders can create
simple to design and install video distribution
systems with remote display clusters with IR, RS-232
or IP control of remote displays or other devices
• Support the use of DVI sources and DVI displays with
HDMI-to-DVI adapters (not included)
Gefen GTB-HD4K2K-142/4/8C-BLK Splitters feature three settings that help improve
performance and stability in HDMI distribution systems.
FST - Fast Switching Technology (FST) Fast Mode improves performance when
connecting/disconnecting HD sources, and powering HD displays ON/OFF.
Slow Mode will follow the standard authentication process based upon the HDMI
and HDCP specications. Slow Mode is recommended when the source does not
support multiple devices.
Audio- As part of EDID management, splitter audio output can be set to 2-channel or
multi-channel when EDID is set to Int (Internal). 2ch Mode is used when all displays
and/or sink devices support only 2-channel LPCM audio. Multi-ch Mode is used
when all displays and/or sink devices are capable of multichannel audio.
EDID- Extended Display Identication Data (EDID) contains the A/V capabilities of a display device in regard
to video resolutions and audio formats supported. This information is used by the source device to
determine the format of the A/V signals on the outputs. In Ext Mode (External) the splitter 'builds' an EDID
based upon the highest common video resolution and most superior audio format supported by all
displays. This EDID is then transmitted to the source device. In Int Mode (Internal) the built-in internal EDID
provides the source device with a 'generic' EDID that can be used by all displays.

19
Connections & Controls
Gefen 4K Ultra HD Splitters
5V DCUSB
Int
Ext
EDID
Power
Out 1 Out 2
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:2 Splitter
for HDMI
Locking
HDMI Out
FST Mode
Audio Mode
EDID Mode
Locking
HDMI In
USB
(Side)
Power
LED
Power
Mounting Holes
Mounting Holes
5V DCUSB
Int
Ext
EDID
Power
In
Audio
FST
2ch
Multi-ch
Fast
Slow
4K Ultra HD
1:4 Splitter
for HDMI
Out
3
Out
1
Out
4
Out
2
Locking
HDMI Out
FST Mode
Audio Mode
EDID Mode
Locking
HDMI In
USB
(Side)
Power
LED
Power
Mounting Holes
Mounting Holes
GTB-HD4K2K-142C-BLK GTB-HD4K2K-144C-BLK

20
GTB-HD4K2K-148C-BLK
Gefen 4K Ultra HD Splitters
4K Ultra HD
1:8 Splitter
for HDMI
Out 1
Out 2
Out 3
Out 4
Out 5
Out 6
Out 7
Out 8
In
Power
5V DCUSB
Int
Ext
EDID
Audio
FST
2ch
Multi-ch
Fast
Slow
Locking
HDMI Out
FST Mode
Audio Mode
EDID Mode
Locking
HDMI In
USB
(Side)
Power
LED
Power
Mounting Holes
Mounting Holes