ALFAtron WUH4 User manual

Preface
Read this user manual carefully before using this product. Pictures shown in this manual
is for reference only, different model and specifications are subject to real product.
This manual is only for operation instruction only, not for any maintenance usage.
Please refer to the dealers for the latest details.
Trademarks
Product model and logo mentioned in this manual are trademarks of our company. 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 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.

4K HDMI Switcher 4x1
SAFETY PRECAUTIONS
To insure the best 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.

4K HDMI Switcher 4x1
Contents
1. Introduction.................................................................................................................1
1.1 Introduction to 4K HDMI Switcher 4x1...............................................................1
1.2 Features ............................................................................................................1
1.3 Package List......................................................................................................1
2. Panel Description........................................................................................................3
2.1 Front Panel........................................................................................................3
2.2 Rear Panel.........................................................................................................4
3. System Connection.....................................................................................................4
3.1 Usage Precautions............................................................................................4
3.2 System Diagram................................................................................................4
3.3 Connection Procedures.....................................................................................5
3.4 ARC Solution.....................................................................................................5
3.5 Application.........................................................................................................6
4. System Control...........................................................................................................6
4.1 Front Panel Control ...........................................................................................6
4.2 IR Control ..........................................................................................................7
4.3 RS232 Control...................................................................................................7
4.3.1 Installation/uninstallation of RS232 Control Software..............................7
4.3.2 Basic Settings..........................................................................................8
4.3.3 RS232 Communication Commands ........................................................9
4.4 EDID Management..........................................................................................10
5. Firmware Upgrade....................................................................................................11
6. Specification..............................................................................................................12
6.1 Supported Input Video Formats.......................................................................13
7. Panel Drawing ..........................................................................................................14
8. Troubleshooting & Maintenance .................................................................................1
9. After-sales Service......................................................................................................2

4K HDMI Switcher 4x1
1
1. Introduction
1.1 Introduction to 4K HDMI Switcher 4x1
4K HDMI Switcher 4x1 is a HDMI switcher accommodating 4 HDMI inputs.
Select any of the inputs by front panel button or IR Remote, the corresponding indicator
on the front panel will illuminate to show real-time I/O connection status. Compliance
with HDMI 1.4& HDCP1.4, 4K HDMI Switcher 4x1 can transmit un-compressed 4K (at
max) signal.
4K HDMI Switcher 4x1 boasts comprehensive audio capacities including PCM, Dolby
Digital, DTS, and DTS-HD. Besides, it provides an ARC audio output socket to transfer
ARC audio to ARC speakers like Yamaha.
Moreover, 4K HDMI Switcher 4x1 supports convenient online firmware update through
USB port.
1.2 Features
4 HDMI inputs
Support Hot-plug
Compliant with HDMI 1.4, capable to transmit 4K signal
High bandwidth: 10.2Gbps
HDCP1.4 compliant, support auto-detecting for input HDCP compliant status
Support EDID management, including 5 embedded EDID data, 10 (max)
user-definable EDID data, and EDID data automatically captured and copied
Intuitive indicators for power, switch mode, I/O connection status and audio output
signal
Convenient online firmware update
1.3 Package List
1 x 4K HDMI Switcher 4x1
2 x Mounting ears (separate from 4K HDMI Switcher 4x1)
4 x Screws
4 x Plastic cushions
1 x IR Receiver
1 x RS232 Cable
1 x IR Remote
1 x Power Adapter (DC 5V 1A)
1 x User Manual

4K HDMI Switcher 4x1
2
Notes：Confirm all the accessories are included, if not, please contact the dealers.

4K HDMI Switcher 4x1
3
2. Panel Description
2.1 Front Panel
No.
Name
Description
①
Power
Illuminate red once powered on
②
AUDIO
Bi-colored LED indicator for audio source
illuminate green when the audio is de-embedded from
HDMI signal
illuminate yellow when the audio is ARC
③
Mode
Bi-colored indicator for present switch mode
illuminate yellow when in auto-switch mode
Illuminate green in manual switch mode.
④
Input
Indicate the present input source, 4 in total, the indicator of the
present input source illuminate green
⑤
SOURCE/
AUTO
Used as video source selection button, press to switch
among the 4 inputs source circularly
Used as switch mode selection button, press and hold for 3
seconds or more to switch between auto-switch mode and
manual switch mode.
⑥
FIRMWARE
USB port, used for firmware update & powering
Note: Output HDCP compliant status depends on input signal. When the input signal is
with HDCP, then output signal is with HDCP and vice versa.

4K HDMI Switcher 4x1
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2.2 Rear Panel
No.
Name
Description
①
IN
HDMI input ports. 4 in total, connect with HDMI or DVI
source device such as DVD/ Blue-ray, supports input
signals up to 4k& 1080p 3D
ARC audio output ports, connect with ARC speakers
②
OUT
HDMI output port, connect to HDMI display
③
AUDIO
Audio output port, connect with speaker to repeat HDMI audio
signal or output ARC audio
④
RS232
Serial control port, connect with control device (e.g. a PC) to
control 4K HDMI Switcher 4x1
⑤
IR IN
Connect with IR receiver to collect infrade signal
⑥
EDID
4-pin EDID DIP switchers to set EDID data, “1”stands for “On”,
“0”stands for “Off”. Dial the switchers to change EDID data
refering to the explainations in 4.4 EDID Management.
⑦
DC 5V
Power port, plug a DC 5V power adapter into this port
Note: Pictures shown in this manual are for reference only; different model and
specifications are subject to real product.
3. System Connection
3.1 Usage Precautions
1) System should be installed in a clean environment
2) All of the power switches, plugs, sockets and power cords should be insulated and
safe.
3) All devices should be connected before power on.
3.2 System Diagram
The following diagram illustrates typical input and output connections that can be utilized
with 4K HDMI Switcher 4x1:

4K HDMI Switcher 4x1
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DVD HDTV
Speaker
PC
IR Remote
HDMI Signal ：
Audio Signal ：
IR Signal ：
Control Signal ：
Figure 3- 1 Connection Diagram
3.3 Connection Procedures
Step1.Connect HDMI/ DVI source device(s) (e.g. Blue-ray DVD) to the HDMI INPUT
ports of 4K HDMI Switcher 4x1 with HDMI cable.
Step2.Connect HDMI displays to HDMI OUTPUT ports of 4K HDMI Switcher 4x1 with
HDMI cable.
Step3.Connect an amplifier to the audio output.
Step4.Connect an IR Receiver to the IR IN to enable IR control.
Step5.Connect the control device (e.g. a PC) to the RS232 port to enable RS232
control.
Step6.Plug a DC 5V power adapter to the power port of 4K HDMI Switcher 4x1.
Note: All the ports support hot-plug.
3.4 ARC Solution
The ARC (Audio Return Channel) enables a display, via a single HDMI cable, to either
send or receive audio via HDMI, upstream or downstream, depending on system set-up
and user preferences, increasing user flexibility. Connect the devices abiding by the
following figure:

4K HDMI Switcher 4x1
6
HDTV
Speaker
Speaker
ARC Audio：
Note: All utilized devices including the HDMI cable should support Audio Return
Channel functionality when connected to Audio Return Channel-enabled devices.
3.5 Application
4K HDMI Switcher 4x1 has a good application in various occasions, such as computer
realm, monitoring, conference room, big screen displaying, television education,
command & control center and smart house etc.
4. System Control
4.1 Front Panel Control
SOURCE/AUTO button on the front panel can be used to change input source and
switch mode.
Switch input source: Press the button to switch circularly among input 1~4, the
corresponding indicator illuminate green synchronously for easy recognition.
Change switch mode: Input signal supports auto-switch and manual switch. Press
and hold SOURCE/AUTO button for 3 seconds or more to switch between the two
modes. (Default: Manual switch.)
In auto-switch mode, source selection abides by the following principles:
New input principle
Once detecting a new input signal, 4K HDMI Switcher 4x1 switch to this new
signal automatically.
Power rebooting principle
Once rebooted, 4K HDMI Switcher 4x1 will automatically select input 1 as input
source even though there is no connection in input 1.
Signal removing principle
Once removed the current display signal, 4K HDMI Switcher 4x1 will detect all