Gefen Log Splitter GTB HDFST 148 User Manual

1:8 Splitter for  
HDMI® with FST  
GTB-HDFST-148  
GTB-HDFST-148-BLK  
User Manual  
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CONTENTS  
1
Introduction  
2
Operation Notes  
Features  
3
4
Panel Layout  
Panel Descriptions  
5
6
Connecting And Operating The GefenToolBox 1:8 Splitter for HDMI with FST  
EDID Management  
7
7
Understanding EDID  
8
EDID Mode Selection  
9
Audio Channel Selection  
10  
11  
External EDID Management  
Internal EDID Specications  
12 Fast Switching Technology  
13 Wall Mounting Instructions  
14 Specications  
15 Warranty  
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INTRODUCTION  
Congratulations on your purchase of the GefenToolBox 1:8 Splitter for HDMI with  
FST. Your complete satisfaction is very important to us.  
About Gefen  
We specialize in total integration for your home theater, while also focusing on  
going above and beyond customer expectations to ensure you get the most from  
your hardware. We invite you to explore our distinct product line. Please visit  
or call us between the hours of 8:00 am and 5:00 pm Monday-Friday, Pacic  
Standard Time for assistance with your A/V needs. We’ll be happy to assist you.  
Why GefenToolBox?  
The GefenToolBox line offers portable and effective solutions for common A/V  
system integration setups using HDMI connectivity. GefenToolBox products are  
wall-mountable and small in size. GefenToolBox products are easily transported  
in the eld and are ready for immediate and simple deployment in working  
environments behind the scenes. These products come nished in a glossy color  
to blend in with either a white wall or black cabinet.  
The GefenToolBox 1:8 Splitter for HDMI with FST  
The GefenToolBox 1:8 Splitter for HDMI with FST sends one digital Hi-Def A/V  
source to up to 8 HDTV displays at the same time. It works with any Hi-Def  
source that needs to be connected to an HDTV display, supporting Deep Color  
with resolutions up to 1080p Full HD and digital audio formats such as Dolby  
TrueHD and DTS HD Master Audio.  
How It Works  
Connect the Hi-Def source to the Splitter’s input using the supplied HDMI cable.  
Connect up to eight (8) HDTV displays to the Splitter’s eight (8) HDMI outputs.  
Apply power to sources and displays. The source signal will now be seen on all  
eight (8) displays at the same time.  
1
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OPERATION NOTES  
READ THESE NOTES BEFORE INSTALLING OR OPERATING  
THE GEFENTOOLBOX 1:8 SPLITTER FOR HDMI WITH FST  
EDID contains the A/V capabilities of a display device in regards to video  
resolutions and audio formats supported. This information is used by  
the source device to determine the format of the A/V signal it outputs.  
The GefenToolBox 1:8 Splitter for HDMI with FST has advanced EDID  
management features to ensure complete compatibility with all sources and  
display devices. See pages 7-11 for more details.  
The GefenToolBox 1:8 Splitter for HDMI with FST detects the presence of  
Deep Color automatically and disables Deep Color EDID features across  
all outputs if any connected device or display is not capable of Deep Color.  
This automatic behavior insures compatibility among all output devices in a  
mixed-device environment. This feature cannot be disabled.  
2
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FEATURES  
Supported HDMI 1.3 Features  
225 MHz (up to 12 bit YUV 444 @ 1080p)  
Deep Color  
Dolby TrueHD and DTS-HD Master Audio  
Lip Sync  
General Features  
Simultaneously displays a single Hi-Def source on up to 8 HDTV displays  
without signal loss.  
Maintains high resolution video - beautiful, sharp HDTV resolutions up to  
1080p Full HD, 1920x1200@60 Hz, and 2K.  
3DTV Pass-Through  
EDID Management for rapid integration of sources and display devices.  
Fast Switching for quick and responsive HDMI signal routing. See page 12  
for details.  
Supports modern advanced digital audio formats including LPCM 7.1 audio,  
Dolby Digital Plus, Dolby TrueHD, and DTS-HD Master Audio.  
Supports the use of DVI sources and DVI displays with an HDMI-to-DVI  
converter cable or adapter.  
Input and output cables up to 15 feet in length can be used when using  
8-bit or 12-bit color. Extension distance is dependent upon the quality of the  
cables being used.  
Locking HDMI connections.  
This product is HDMI-compliant and HDCP-compliant.  
Package Includes  
(1) GefenToolBox 1:8 Splitter for HDMI with FST  
(1) 6-foot Locking HDMI cable (M-M)  
(1) 5V DC Locking Power Supply  
(1) User Manual  
3
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PANEL LAYOUT  
1
2
3
4
8
5
6
7
4
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PANEL DESCRIPTIONS  
1
2
3
HDMI Output Ports 1-8  
Connect HDMI-compliant display device(s) to any of these output ports.  
Fast / Slow Switch  
Switches between Fast and Slow Switching. See page 12 for more information.  
Audio Channel Selection Switch  
This switch will modify the EDID to specify the number of supported audio  
channels when using the INTERNAL EDID mode. This setting will not affect the  
EDID information when using the EXTERNAL EDID mode.  
4
EDID Mode Selection Switch  
This switch will control the location of the EDID that will be sent to the source  
device. The options are EXTERNAL and INTERNAL. See pages 7-11 for more  
information.  
5
6
7
8
USB Service Port  
Mini-USB service port used for upgrading the rmware.  
HDMI Input Port  
Connect HDMI source devices to these ports.  
5V DC Power Input Receptacle  
Connect the included 5V DC Locking Power Supply to this receptacle.  
Power Indicator LED  
This LED will become active once the included 5V DC power supply has been  
properly connected to the unit and a power source.  
5
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CONNECTING AND OPERATING THE  
GEFENTOOLBOX 1:8 SPLITTER FOR HDMI WITH FST  
How to Connect the GefenToolBox 1:8 Splitter for HDMI with FST  
1. Use the supplied HDMI cable to connect a Hi-Def source device to the HDMI  
input port of the GefenToolBox 1:8 Splitter for HDMI with FST.  
2. Use additional user supplied HDMI cables to connect up to 8 HDTV displays  
to the output ports on the 1:8 Switcher for HDMI with FST.  
3. Connect the included 5V DC power supply to the power receptacle on the  
Splitter.  
4. Connect the other end of the power supply to an available power outlet.  
How to Operate the GefenToolBox 1:8 Splitter for HDMI with FST  
The GefenToolBox 1:8 Splitter for HDMI with FST does not require any  
conguration to begin splitting the incoming HDMI input signal. However,  
depending on the features required by the user, the EDID Mode and Audio  
Channel Selection switches may need to be adjusted. See the following section  
for more information on the usage of these switches.  
Wiring Diagram for the GefenToolBox 1:8 Splitter for HDMI with FST  
Gefen  
HDMI CABLE  
HDMI Display  
HDMI Source  
HDMI Display  
HDMI Display  
HDMI Splitter  
HDMI Display  
HDMI Display  
HDMI Display  
HDMI Display  
HDMI Display  
GTB-HDFST-148  
6
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EDID MANAGEMENT  
Understanding EDID  
The GefenToolBox 1:8 Splitter for HDMI with FST features automatic and manual  
EDID adjustments to maximize compatibility of all attached devices. First it is  
necessary to understand EDID and what it is used for.  
EDID. What is it and what is it used for?  
Under normal circumstances, analog (i.e. VGA computer) and digital (i.e. Blu-ray  
player) source devices will require information about a connected device/display  
to assess what resolutions and features are compatible. This required information  
is read from a standardized le called the EDID (Extended Display Information  
Data). Almost all types of output devices/displays (computer monitor, HDTV, A/V  
receiver) will carry and transmit its EDID to a connected source. The source will  
then read this EDID le and make the necessary adjustments to ensure that only  
compatible features are released to the device/display. A source can only accept  
and read one EDID from a connected device/display. Likewise, the source can  
only output one resolution and audio type for a connected device/display to use.  
Why is EDID so important with the GefenToolBox 1:8 Splitter for HDMI with  
FST?  
The GefenToolBox 1:8 Splitter for HDMI with FST is a complex piece of  
technology that replicates a single input signal to multiple outputs. The single  
source device will require one EDID to read. Multiple devices/displays can be  
connected to the outputs on the GefenToolBox 1:8 Splitter for HDMI with FST,  
each with its own EDID, so management of this information is key to ensure that  
maximum compatibility is maintained between all devices.  
What options do I have to manage the EDID in the GefenToolBox 1:8  
Splitter for HDMI with FST?  
It is important to understand that the EDID contains much more than just listings  
of supported resolutions and audio formats. However, resolutions and audio  
formats are the two key types of information that a user will need to understand  
how to use these EDID management functions.  
Common problems that a user may encounter while using a splitter can be:  
1. Video may not be visible on all output devices/displays.  
2. Audio may not be heard on all output devices/displays.  
These symptoms usually arise from video resolution / audio format  
incompatibilities between the devices / displays connected to the splitter.  
The GefenToolBox 1:8 Splitter for HDMI with FST can use one of two methods  
to acquire and retransmit an EDID to the A/V source device telling it about  
the kind of output devices that are connected to the Splitter, thus curing the  
incompatibility.  
7
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EDID MANAGEMENT  
EDID Mode Selection  
1. EXTERNAL MODE:  
To use this mode, set the EDID Mode Switch on the front panel to the EXT  
position. In External EDID mode, the Splitter directly retrieves EDID data  
from each connected A/V display device and builds a new EDID created  
from the highest common video resolution that all display devices can use  
together and the highest audio capability. This new EDID is sent back to the  
source device.  
If sufcient EDID data is unavailable from external display devices or EDID-  
related problems are encountered, Internal EDID Mode should be used to  
provide a single compatible EDID for all connected devices.  
2. INTERNAL MODE:  
To use this mode, set the EDID Mode Switch on the front panel to the INT  
position. This mode will use a preset EDID that is stored in the GefenToolBox  
1:8 Splitter for HDMI with FST from the factory. This pre-programmed  
standard EDID data structure is compatible with most A/V display devices.  
All resolutions and audio formats specied in this EDID will be passed to the  
source device. For a complete listing of the resolutions and audio formats  
listed in this EDID please see page 11.  
NOTE: HDMI capable devices/displays connected to the output ports MUST  
be compatible with at least one resolution/audio format specied in this  
EDID. It is recommended to set, on the source device, a common resolution  
and audio format shared by all attached devices/displays. This is to ensure a  
compatible signal is output to all connected devices/displays.  
8
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EDID MANAGEMENT  
Audio Channel Selection  
The GefenToolBox 1:8 Splitter for HDMI with FST features a switch that will  
modify the supported audio formats listed in the pre-programmed EDID. This  
feature is useful for limiting the output of the source device to either 2 or multi-  
channel audio formats.  
NOTE: This selector switch will only affect the pre-programmed EDID in the  
INTERNAL (INT) EDID Mode.  
The GefenToolBox 1:8 Splitter for HDMI with FST can use either of the following  
settings for audio format support:  
1. 2 Channel: This setting will limit the audio formats listed in the pre-  
programmed EDID to 2 channel LPCM. For a full listing of the audio formats  
in this mode please see page 11.  
To use this mode, set the Audio Selection Switch on the front panel to the 2  
CH position.  
This mode is useful in scenarios where all output devices/displays are HDTV  
monitors that only support 2 channel LPCM. This setting will ensure that all  
connected devices will receive and produce sound.  
2. Multi-Channel: This setting will enable all common audio formats in the pre-  
programmed EDID. For a full listing of the audio formats in this mode please  
see page 11.  
To use this mode, set the Audio Selection Switch on the front panel to the  
Multi CH position.  
This mode is useful in scenarios where the output devices/displays are  
varying devices (e.g. HDTV display and audio receivers). Please note that  
sound may not be heard from all output devices/displays if a shared common  
audio format is not used by the source device.  
9
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EDID MANAGEMENT  
External EDID Management  
The 1:8 Splitter for HDMI with FST features EDID Management. Before the  
source can send video or audio signals to the display, the source devices reads  
the EDID (Extended Display Identication Data) of each device connected to  
an output. The EDID contains information about what type of A/V data that the  
source can send to each display.  
The 1:8 Splitter for HDMI with FST distributes a single source to multiple  
output devices. This involves reading EDID data from more than one device.  
Management of the EDID data is important to maintain compatibility between all  
devices.  
Display Connections  
If a display is not connected to Output 1, then no EDID changes are made,  
meaning that the previous EDID information will be used. This state will be  
in effect until a display is connected to Output 1 and the Splitter is power-  
cycled.  
EDID is copied from Output 1 to all other outputs. The audio block will be  
copied from Output 1. EDID-copying is performed only when the Splitter is  
reset or power-cycled.  
3DTV Support  
3D signals are supported if a 3DTV is connected to Output 1.  
Deep Color  
Deep Color will be disabled if one of more other displays connected to the  
Splitter do not support Deep Color.  
10  
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EDID MANAGEMENT  
Internal EDID Specications  
The table below lists the settings that comprise the built-in Internal EDID data  
structure:  
Audio Data Block  
Speaker Allocation  
Video Data Block  
1080p@60Hz  
2-channel:  
2-channel:  
FL/FR  
1080p@50Hz  
LPCM 2CH  
Multi-channel:  
1080i@60Hz (native)  
1080i@50Hz  
Multi-Channel:  
LPCM 2CH  
LPCM 8CH  
AC-3 6CH  
DTS 7CH  
RLC/RRC  
RL/RR  
FC  
LFE  
Dolby Digital+ 8CH FL/FR  
Dolby TrueHD 8CH  
DTS-HD 8CH  
MAT(MLP) 8CH  
11  
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FAST SWITCHING TECHNOLOGY  
FAST SWITCHING TECHNOLOGY  
Fast Switching Technology  
Fast Switching Technology (FST) is a Gefen software implementation for  
HDMI 1.3 products. FST was created to improve the inherent lengthy HDMI  
authentication process, based on the HDMI and HDCP specications.  
FST provides quicker A/V source switching and greatly improves the overall A/V  
system behavior and performance when more than one HDTV display is used in  
the system setup.  
FST allows connecting / disconnecting or turning ON / OFF of HDTV displays  
without having these activities affect other Hi-Def sources routed to any other  
HDTV display in the same system.  
FAST MODE:  
Setting the Splitter to FAST mode will improve performance when connecting /  
disconnecting Hi-Def sources, and powering ON / OFF HDTV displays.  
NOTE: When switching from SLOW mode to FAST mode, the HDTV displays  
connected to the Splitter will blink momentarily.  
SLOW MODE:  
When set to SLOW mode, the Splitter will follow the standard authentication  
process, based on the HDMI and HDCP specications. SLOW mode is  
recommended when the source does not support multiple devices.  
12  
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WALL MOUNTING INSTRUCTIONS  
The GefenToolBox 1:8 Splitter for HDMI with FST should be mounted vertically  
in a wall or cabinet with wood/drywall screws as shown in the diagram above.  
There should be an inch or two of clearance between the edges of the unit and  
any walls or vertical surfaces to allow for enough clearance for insertion and  
retraction of cables at the HDMI connectors.  
For installation on a drywall surface, use a #6 drywall screw. It is recommended  
when installing on a drywall surface that studs be used to secure the Splitter  
should undue stress be applied when connecting and disconnecting HDMI  
cables.  
13  
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SPECIFICATIONS  
Single Link Bandwidth ............................................................................. 225 MHz  
Pixel Clock / Speed .................................................................................. 165 MHz  
Maximum Video Resolution ......................................... 1080p, 1920x1200@60Hz  
with 12-bit Deep Color  
Input Video Signal .............................................................................. 1.2 volts p-p  
Input DDC Signal ......................................................................... 5 volts p-p (TTL)  
HDMI Connectors................................... type A 19 pin female; (1) input, (8) output  
LED Indicator: (Power)................................................................................ (1) Red  
EDID Mode Switches (2)...................................... Audio Channels, INT/EXT Mode  
Power Supply .............................................................................................. 5V DC  
Power Consumption ............................................................................. 10W (max)  
Dimensions ............................................................................. 3”W x 10½”H x ¾”D  
Operating Temperature .............................................................................0 - 40 °C  
Compliancy.............................US/EU Standards, HDMI 1.3, HDMI 1.2, HDCP 1.1,  
DVI 1.0  
Certications.............................................................UL (power supply), RoHS, CE  
Shipping Weight ............................................................................................ 3 lbs.  
14  
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Rev B1  
1.5S  
20600 Nordhoff St., Chatsworth CA 91311  
1-800-545-6900 818-772-9100 fax: 818-772-9120  
Pb  
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