UTE UH-4U-8K User manual

www.ute.de
UH-4U-8K
8K UHD 4x1 HDMI 2.1 Switcher
with eARC and Auto-Switching
All Rights Reserved
Version: UH-4U-8K_2023V1.1
User Manual

UH-4U-8K: 8K60 UHD 4x1 HDMI 2.1 Switcher with eARC
U.T.E. electronic GmbH & Co. KG www.ute.de
Statement
Thanks for purchasing this product, please read this user manual carefully before using
this product. Pictures are shown in this manual for reference only. Different models and
specifications are subject to real product.
This manual is only for operation instruction, please contact the local dealer for
maintenance assistance. The functions described in this version are updated till
January 4, 2023. In the constant effort to improve our product, we reserve the right to
make functions or parameters changes without notice or obligation. Please refer to the
dealers for the latest details.
All product function is valid till 2023-01-04.
Trademarks
Product model and logo are trademarks of U.T.E. electronic GmbH & Co. KG.
Any other trademarks mentioned in this manual are acknowledged as the properties of
the trademark owner. No part of this publication may be copied or reproduced without
the prior written consent.
FCC Statement
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. It 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 commercial
installation.
Operation of this equipment in a residential area is likely to cause interference, in which
case the user at their own expense will be required to take whatever measures may be
necessary to correct the interference.
Any changes or modifications not expressly approved by the manufacture would void
the user’s authority to operate the equipment.

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Safety Precaution
To ensure the best performance from the product, please read all instructions carefully
before using the device. Save this manual for further reference.
⚫Unpack the equipment carefully and save the original box and packing material for
possible future shipment.
⚫Follow basic safety precautions to reduce the risk of fire, electrical shock and injury
to persons.
⚫Do not dismantle the housing or modify the module. It may result in electrical shock
or burn.
⚫Using supplies or parts not meeting the products’ specifications may cause damage,
deterioration or malfunction.
⚫Refer all servicing to qualified service personnel.
⚫To prevent fire or shock hazard, do not expose the unit to rain, moisture or install
this product near water.
⚫Do not put any heavy items on the extension cable in case of extrusion.
⚫Do not remove the housing of the device as opening or removing housing may
expose you to dangerous voltage or other hazards.
⚫Install the device in a place with fine ventilation to avoid damage caused by
overheat.
⚫Keep the module away from liquids.
⚫Spillage into the housing may result in fire, electrical shock, or equipment damage.
If an object or liquid falls or spills on to the housing, unplug the module immediately.
⚫Do not twist or pull by force ends of the optical cable. It can cause malfunction.
⚫Do not use liquid or aerosol cleaners to clean this unit. Always unplug the power to
the device before cleaning.
⚫Unplug the power cord when left unused for a long period of time.
⚫Information on disposal for scrapped devices: do not burn or mix with general
household waste, please treat them as normal electrical wastes.

UH-4U-8K: 8K60 UHD 4x1 HDMI 2.1 Switcher with eARC
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Contents
1Introduction ...............................................................................................................1
1.1 Product Introduction..........................................................................................1
1.2 Features ...........................................................................................................1
1.3 Packing List ......................................................................................................2
2Panel Description ......................................................................................................3
2.1 Front Panel .......................................................................................................3
2.2 Rear Panel........................................................................................................4
3System Connection ...................................................................................................5
3.1 Usage Precautions ...........................................................................................5
3.2 System Diagram UH-4U-8K..............................................................................5
4Source Button Control...............................................................................................6
4.1 Manual Switching .............................................................................................6
4.2 Automatic Switching .........................................................................................6
5IR Remote Control ....................................................................................................7
6RS232 Control...........................................................................................................8
6.1 RS232 Control Software ...................................................................................8
6.1.1 Installation/ uninstallation of RS232 Control Software ...........................8
6.1.2 Basic Settings........................................................................................8
6.2 RS232 Command ...........................................................................................10
6.2.1 RS232 Communication Protocol .........................................................10
6.2.2 Signal Switching ..................................................................................10
6.2.3 Source Device Control.........................................................................11
6.2.4 Display Device Control ........................................................................12
6.2.5 Audio Selection ...................................................................................12
6.2.6 System Control....................................................................................13
7EDID Management..................................................................................................14
7.1 Predefined EDID Setting.................................................................................14
7.2 User Defined EDID Setting .............................................................................15
8Firmware Upgrade ..................................................................................................16
9Technical Specification............................................................................................17

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10 Panel Drawing.........................................................................................................19
11 Troubleshooting & Maintenance..............................................................................20
12 After-sales / Customer Service................................................................................21

UH-4U-8K: 8K60 UHD 4x1 HDMI 2.1 Switcher with eARC
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1 Introduction
1.1 Product Introduction
The UH-4U-8K is an auto switcher with four HDMI video inputs and one HDMI output.
This switcher supports HDMI video resolution up to 8K@60Hz 4:2:0 HDR+ and High
Definition audio.
Except passing EDID information from the display, there are multiple built-in EDID
settings to simplify an installation. The switcher will de-embed digital stereo audio to
provide an analog audio source for an existing audio system. The switcher also
supports enhanced audio return channel (eARC) for transmitting audio back to HDMI
input port from the connected display.
In auto-switch mode, it switches to an HDMI input as soon as a new source is
connected. When the active input is removed, the switcher will select the first source on
the lowest numbered input. The switcher may also be controlled via RS232, IR with the
included remote, or from the source button on the front of the switcher.
1.2 Features
⚫Switches any one of four HDMI inputs to one HDMI output.
⚫Supports HDMI V2.1, HDCP 2.3 compliant and 40Gbps.
⚫Supports video resolution up to 8K@60Hz 4:2:0, Dolby Vision, HDR.
⚫40Gbps high bandwidth.
⚫Fully compliant with the HDMI 2.1 and HDCP2.3 specifications.
⚫Supports enhanced audio return channel (eARC).
⚫Advanced EDID management: multiple preset and user defined allowed.
⚫Controllable via front panel buttons, RS232 and IR.
⚫Supports CEC.
⚫Provides seven LEDs to indicate the current operating status and to assist
troubleshooting an installation.
⚫Firmware upgrade by Micro-USB port.

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1.3 Packing List
⚫1x UH-4U-8K: 8K UHD 4x1 HDMI 2.1 Switcher with auto-switching
⚫2x Mounting Ears
⚫2x Mounting Screws
⚫4x Plastic Cushions
⚫1x RS232 Cable (3-pin terminal block to DB9)
⚫1x IR Remote
⚫1x IR Receiver
⚫1x Power Adapter (12V DC 1A)
⚫1x User Manual
Note: Please contact your dealer immediately if any damage or defect in the
components is found.

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2 Panel Description
2.1 Front Panel
Figure 2-1 UH-4U-8K Front Panel
①POWER LED: The LED illuminates green when power is applied.
②AUDIO LED: Illuminates blue when de-embedding audio
③INPUT 1~4 LEDs: The LED illuminates green when there is HDMI input on the
corresponding channel.
④AUTO LED: Illuminates blue when auto switching mode.
⑤Switch AUTO/3s Button:
•Press to switch to next input source.
•Press and hold at least three seconds to switch between manual mode and auto
mode.
⑥EDID: 4-pin DIP switch for EDID setting.
Please refer to 7 EDID Management for more details.
⑦FW: Micro-USB port for firmware upgrade.
Note: Pictures shown in this manual are for reference only, different model and
specifications are subject to real product.

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2.2 Rear Panel
Figure 2-2 UH-4U-8K Rear Panel
①IN 1~4: Four type-A female HDMI input ports to connect HDMI sources.
The input 4 port supports eARC.
②OUT: Type-A female HDMI output port to connect HDMI display.
③AUDIO: 3.5mm mini jack for analog audio output.
④IR IN: 3.5mm mini jack to connect the included IR receiver for remote control.
⑤RS232: 3-pin terminal block to connect control device (e.g. PC or TF8).
⑥DC 12V: DC barrel port to connect an AC power adapter.
Notes:
•Output HDCP compliant status depends on input signal.
When the input signal is with HDCP, then output signal is with HDCP and vice
versa.
•Pictures shown in this manual are for reference only, different model and
specifications are subject to real product.

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3 System Connection
3.1 Usage Precautions
1) Make sure all components and accessories included before installation.
2) System should be installed in a clean environment and has a prop temperature and
humidity.
3) All of the power switches, plugs, sockets and power cords should be insulated and
safe.
4) All devices should be connected before power on.
3.2 System Diagram UH-4U-8K
The following diagram illustrates the typical input and output connection that can be
utilized with 8K60 UHD 4x1 HDMI2.1 Switcher UH-4U-8K:
Figure 3-1 Connection and System Diagram
Note: When the 1-4 channel is switched to any one and an active signal is
detected, the ARC of the 4th channel can work normally.
When no source signal is detected on any one channel, the output 5V is turned off,
and the ARC cannot work at the same time.

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4 Source Button Control
4.1 Manual Switching
When the switcher is in manual switching mode, the Switching Mode LED will be off,
and please press SWITCH AUTO/3s button to switch to the next input.
4.2 Automatic Switching
To enable automatic switching, press and hold the SWITCH AUTO/3s button for three
seconds. The Switching Mode LED will turn to blue.
When in auto-switch mode, the switcher follows the rules in the certain circumstances:
⚫Press and hold the SWITCH AUTO/3s button again for at least 3 seconds to exit
AUTO mode, but the input source will not change.
⚫Pressing the SWITCH AUTO/3s button can also change the input source.
⚫New Input:
Upon detecting a new input, the switcher will automatically select the new source.
⚫Reboot:
Once power is restored to the switcher, if the last selected source is still available,
the switcher will still output this signal, otherwise, the switcher will switch to the first
available active input starting at HDMI Input 1.
⚫Source Removed:
When an active source is removed, the switcher will switch to the first available
active input starting at HDMI Input 1.
Note: 5V(default) or TMDS mode can be selected. 8K source cannot use TMDS
mode to achieve automatic switching.

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5 IR Remote Control
Please connect an IR receiver to the IR input port; the IR remote is used for signal
switching and it can also be used to control source and display devices based on CEC
function.
Notes:
•Pictures shown in this manual are for reference only, different model and
specifications are subject to real product.
•Due to the HDMI input 4 port “IN4(eARC)” does not support CEC, the source
device connected to this port can not be controlled by IR remote.
•The source and display devices are required to support CEC when the IR
remote is used to control them.
INPUTS:
1~4: Select the corresponding input source.
MANUAL/AUTO: Switch Auto or manual mode.
SOURCE:
Control the input source (e.g. Blu-ray or DVD).
DISPLAY:
Control the display (e.g. HDTV or Projector).

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6 RS232 Control
Connect the switcher to the control device (e.g. PC) with RS232 cable and set the
parameters in the right manner, the control device is capable to control this switcher by
RS232 commands.
6.1 RS232 Control Software
6.1.1 Installation/ uninstallation of RS232 Control Software
•Installation: Copy the control software file to the computer connected with this
switcher.
•Uninstallation: Delete all the control software files in corresponding file path.
6.1.2 Basic Settings
First of all, please connect all needed input devices and output devices, then to connect
it with a computer which is installed with RS232 control software.
Here we take the software CommWatch.exe as example.
Double-click the following icon:

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The interface of the control software is shown as below:
Please set the parameters of COM number, bound rate, data bit, stop bit and the parity
bit correctly (Baud rate: 9600 , Data bit: 8 , Stop bit: 1 , Parity bit: none), and then
the command is ready to be sent in command sending area.
Parameter configuration area
Monitoring area, indicates if
the command sent works.
Command sending area

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6.2 RS232 Command
6.2.1 RS232 Communication Protocol
Communication protocol:
Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity bit: none
Note: All commands must be ended with “<CR><LF>”.
6.2.2 Signal Switching
Function
Command
Feedback Example
>SetVideo
>SetVideo [Param1]
param1 = 01-04
01: HDMI In 1
02: HDMI In 2
03: HDMI In 3
04: HDMI In 4
>SetVideo 01
<SetVideo 01
>SetAutoSwitch
>SetAutoSwitch [Param1]
Param1 = On, Off
>SetAutoSwitch On
>SetAutoSwitch Off
<SetAutoSwitch On
<SetAutoSwitch Off
>SetDetMode
>SetDetMode [Param1]
Param1 = 5V, TMDS
>SetDetMode 5V
>SetDetMode TMDS
<SetDetMode 5V
<SetDetMode TMDS

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6.2.3 Source Device Control
Notes:
•The input source device is required to support CEC.
•Due to the HDMI input 4 port does not support CEC, the source device connected
to this port can not be controlled by IR remote.
Function
Command
Feedback Example
Turn on the input source device,
e.g. Blue-ray DVD.
>CecSrcOn
<CecSrcOn
Turn off the input source device,
e.g. Blue-ray DVD.
>CecSrcOff
<CecSrcOff
Play
>CecSrcPlay
<CecSrcPlay
Pause
>CecSrcPause
<CecSrcPause
Stop
>CecSrcStop
<CecSrcStop
Fast Forward x1
>CecSrcForward
<CecSrcForward
Fast Rewind x1
>CecSrcBackward
<CecSrcBackward
Next Section
>CecSrcNext
<CecSrcNext
Previous Section
>CecSrcPrev
<CecSrcPrev
Open the menu setting
>CecSrcMenu
<CecSrcMenu
Go back
>CecSrcBack
<CecSrcBack
Confirm (OK)
>CecSrcOk
<CecSrcOk
Exit
>CecSrcExit
<CecSrcExit
Up direction
>CecSrcUp
<CecSrcUp
Down direction
>CecSrcDown
<CecSrcDown
Left direction
>CecSrcLeft
<CecSrcLeft
Right direction
>CecSrcRight
<CecSrcRight

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6.2.4 Display Device Control
Note: The display device is required to support CEC.
Function
Command
Feedback Example
Turn on the display device, e.g.
HDTV.
>CecTvOn
<CecTvOn
Turn off the display device, e.g.
HDTV.
>CecTvOff
<CecTvOff
Volume up.
>CecTvVol +
<CecTvVol +
Volume down.
>CecTvVol -
<CecTvVol -
Mute.
>CecTvMute
<CecTvMute
Unmute
<CecTvMute
6.2.5 Audio Selection
Function
Command
Feedback Example
>SetAout
>SetAout [Param1]
Param1 = On, Off
>SetAout On
>SetAout Off
<SetAout On
<SetAout Off

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6.2.6 System Control
Function
Command
Feedback Example
System reset.
>Reset
<Factory Reset
Machine reboot.
>Reboot
<Reboot
Get system information.
>GetStatus
<WUH4ARC-8K
<V1.0.0
<Video 01
<AutoSwitch On
<Aout On
<EDID 01
<DetMode 5V
<RS232Baud: 9600
>SetSaveEDID
>SetSaveEDID [Param1]
Param1 = 01-05
01: User EDID 1
02: User EDID 2
03: User EDID 3
04: User EDID 4
05: User EDID 5
>SetSaveEDID 01
<Please Upload The
EDID File Through
RS232 in 10s …
<Save failed, The
EDID File Was Not
Uploaded Within 10s.
<Saved Successfully,
User EDID 01 is
Ready.
>SetRS232Baud
>SetRS232Baud [Param1]
Param1 = 9600, 19200, 38400,
57600, 115200
>SetRS232Baud 9600
<SetRS232Baud:
9600

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7 EDID Management
7.1 Predefined EDID Setting
The rear panel boasts a 4-pin DIP switch to set the predefined EDID. The ten types of
embedded EDID and their corresponding switch status are shown in the below list.
ID
Switch
Status
Video
Audio
0
0000
Pass though
Pass though
1
0001
1920x1080p@60Hz 4:4:4 8bit
Stereo
2
0010
1920x1080p@60Hz 4:4:4 8bit
High
Definition
3
0011
1920x1080p@60Hz 4:4:4 12bit
Stereo
4
0100
1920x1080p@60Hz 4:4:4 12bit
High
Definition
5
0101
3840x2160p@60Hz 4:2:0 8bit
Stereo
6
0110
3840x2160p@60Hz 4:2:0 8bit
High
Definition
7
0111
3840x2160p@60Hz 4:4:4 10bit
HDR
Stereo
8
1000
3840x2160p@60Hz 4:4:4 10bit
HDR
High
Definition
9
1001
7680x4320@60Hz 4:2:0
8bit HDR+
High
Definition
10
1010
7680x4320@60Hz 4:2:0
10bit HDR+
High
Definition

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7.2 User Defined EDID Setting
Except directly invoking the embedded EDID, the specific EDID can be customized.
There are five EDID can be customized following the below operations.
Step1.Rename the user defined EDID according the following format:
EC_xx_xxxx_xxx.bin
⚫EC: Represents EDID.
⚫xx: Represents EDID ID. It is 11~15.
⚫xxxx: Represents the video parameter.
⚫xxx: Represents the audio format.
Example: EC_11_720P_LPCM.bin
Step2.Power on the switcher, and then connect the switcher to the PC with USB cable.
The PC will automatically detect a U-disk named of “BOOTDISK”.
Step3.Double-click the U-disk, a file named of “READY.TXT” would be showed.
Step4.Copy the user defined EDID (such as EC_11_720P_LPCM.bin) to the
“BOOTDISK” U-disk.
Step5.Reopen the U-disk to check the filename “READY.TXT” whether automatically
becomes “SUCCESS.TXT”, if yes, the user defined EDID was imported into the
switcher and saved as its corresponding EDID ID successfully.
Step6.Repeat the above third to fifth step to copy other user defined EDIDs to the
“BOOTDISK” U-disk.
Step7.Remove the USB cable, connect the adaptor to power on the switcher.
Step8.The new EDID also can be invoked via the 4-pin DIP switch directly. The EDID
ID and its corresponding switch status are shown in the below list.
ID
Switch Status
11
1011
12
1100
13
1101
14
1110
15
1111