ALFAtron ALF-SMW42S User manual

www.alfatronelectronics.com
ALFATRON ELECTRONICS GmbH GERMANY
ALF-SMW42S
4x2 Seamless Wireless Switcher
with Multi-View 4K 60Hz 4:4:4
All Rights Reserved

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FCC Statement
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
This equipment 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 residential installation. 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.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help
This device complies with part 15 of the FCC rules. Operation is subject to the
following two conditions (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation and after change.
Radiation Exposure
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment.
This device complies with Industry Canada license-exempt RSS standard(s). Operation is
subject to the following two conditions:

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(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired
operation of the device.
"Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi,
même si le brouillage est susceptible d'en compromettre le fonctionnement."
Radiation Exposure:
This equipment complies with IC radiation exposure limits set forth for an uncontrolled
environment.
Déclaration d'exposition aux radiations: Cet équipement est conforme aux limites d'exposition aux
rayonnements IC établies pour un environnement non contrôlé.
All RF frequencies are not restricted in EU member states.
Do not dispose of this product with the normal household waste at the end of its
life cycle. Return it to a collection point for the recycling of electrical and electronic
devices. This is indicated by the symbol on the product, user manual or packaging.
The materials are reusable according to their markings. By reusing, recycling or
other forms of utilisation of old devices you make an important contribution to the
protection of our environment. Please contact your local authorities for details about
collection points.

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Preface
1. Read, follow, and keep these instructions.
2. Heed all warnings.
3. Do not use this product near water. Keep away from wet places, such as: spas, pools,
sinks, laundries, wet basements, etc.
4. When cleaning, unplug the device and wipe with a dry cloth. Do not use damp cloths,
cleaning fluids, or aerosols which may result in electric shock, fire, or switcher damage.
5. Operate this product using only the included power supply and/or power cable. Use of an
unapproved power implement may impair performance, damage the product, or cause
fires.
6. Do not block any ventilation openings. Install in accordance with the manufacturer’s
instructions.
7. Do not install or place this product near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
8. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the product.
9. Only use attachments/accessories specified by Alfatron to avoid fire, shock, or other
hazards.
10. To reduce the risk of electric shock and/or damage to this product, never handle or touch
this device or power cord if your hands are damp or wet. Do not expose this product to
liquids or moisture.
11. Unplug this product during lightning storms or when unused for long periods of time.
12. Never open, remove device panels, or make any adjustments not described in this manual.
Attempting to do so could result in electric shock, damage to the device, or other hazards.
CAUTION
The exclamation point within an equilateral triangle is
intended to alert the user to the p resence of important
operating and maintenance (servicing) instructions in
the lit erature accompanying the appliance.
The lightning flash with arrowhead symbol, wit hin an
equilateral triangle, is intended to alert the user to the
presence of uninsulated dange rous voltage within the
product’s enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
TO REDUCT THE RISK OF ELECTRIC SHOCK
DO NOT OPEN ENCLOSURE OR EXPOSE
TO RAIN OR MOISTURE.
NO USER-SERVICEABLE PARTS
INSIDE REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.

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Contents
ALF-SMW42S.................................................................................................. 1
Introduction...................................................................................................... 4
Features ................................................................................................... 4
Package Contents .................................................................................... 5
Panel Description............................................................................................. 6
Front Panel ............................................................................................... 6
Rear Panel................................................................................................ 7
Specifications................................................................................................... 9
Installation and Wiring ................................................................................... 11
Installation .............................................................................................. 11
Wiring ..................................................................................................... 12
Key Function.................................................................................................. 14
AV over IP............................................................................................... 14
Screen Layout Switch............................................................................. 14
Automatic Signal Switching .................................................................... 16
Screen Mirroring ..................................................................................... 17
(1) Screen Mirroring over Airplay....................................................... 17
(2) Screen Mirroring over Miracast .................................................... 18
(3) Screen Mirroring over USB Dongle (ALF-SMW42D) ................... 23
Guide Screen.......................................................................................... 24
OSD........................................................................................................ 26
Web UI........................................................................................................... 28
General Tab ............................................................................................ 29
Device Name .......................................................................................... 29
Network .................................................................................................. 30
Access Code .......................................................................................... 30
Analog Audio Latency............................................................................. 31
Soft AP Password ................................................................................... 32

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Output..................................................................................................... 32
Sink Power Management........................................................................ 34
Password................................................................................................ 35
Guide Screen Picture.............................................................................. 36
Maintenance ........................................................................................... 36
Version Information................................................................................. 37
Video Source Tab ................................................................................... 38
State & Switch ........................................................................................ 38
Manage Alias .......................................................................................... 39
Firmware Upgrade ......................................................................................... 40
Limited warranty in respect of Alfatron Products Only ................................... 41

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Introduction
The ALF-SMW42S is a high-performance BYOD presentation switcher with
wireless presentation capability. It equips a built-in Wi-Fi module and
supports multiple access approaches, including Airplay Mirroring, Miracast,
physical interfaces (HDMI, VGA and USB-C) and an USB Dongle, with which
you can project screen contents of your computer (Mac/Windows) or mobile
device (iPhone/iPad/Android) to a display in Multiview mode.
Multiple features like fast seamless switching, auto signal switch, serial
control, CEC, Guide Screen, OSD display, USB switching and extension are
included. The switcher is a collaboration terminal used for meeting room or
workgroup discussion.
Features
Multiview presentation with configurable screen layout.
Built-in Wi-Fi module for wireless connectivity with devices over Airplay,
Miracast, and USB Dongle.
Fast seamless switching for both single view and Multiview.
Supports HDMI input resolutions up to 4K@30Hz 4:4:4.
Supports HDMI output resolutions up to 4K@60Hz 4:4:4.
Detailed and friendly OSD information.
Supports USB extension and switching control among three USB hosts.
Offers multiple control approaches: front panel buttons, Web UI and
Telnet API.
Multiview layout adjustable by the end user.

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Package Contents
1 x Switcher
1 x DC 12V Power Adapter (with US, EU, pins)
2 x Phoenix Male Connectors (3.5 mm, 4 Pins)
2 x Mounting Brackets (with Screws)
2 x Wi-Fi Antennas

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Panel Description
Front Panel
No.
Name
Description
1 Power LED On: The switcher is powered on.
Off: The switcher is powered off.
2 Status LED On: The switcher is outputting at least one video source.
Blinking: The switcher is in standby mode.
Off: The switcher is outputting Guide Screen.
3 Source
Switch
VGA IN ~ USB-C IN Buttons:
Short press to output or stop outputting the
corresponding video source.
Hold press to output the corresponding video
source in full screen mode.
VGA IN ~ USB-C IN LEDs:
On: The corresponding video signal is valid and is
being output.
Blinking quickly: The corresponding video signal is
valid but is not being output.
Blinking slowly: The corresponding video signal is
being output but is not valid.
Off: The switcher
is in standby mode. / The
corresponding video signal is neither valid nor
being output.
4 HDMI 2
Output
HDMI2 Output button: press to switch between Follow
mode and Matrix mode for HDMI Output 2.
To switch to Follow mode: long press the HDMI2
Output button until the Follow LED lights up. In
Follow mode, HDMI OUT 2 follows HDMI OUT 1 to
output the same video content as that of HDMI
OUT 1.
To switch to Matrix mode: short press the HDMI 2
Output button. In Matrix mode, HDMI OUT 2 will

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output a specific video source in single view
(specified by Telnet API or Web UI); continue to
short press the button, the HDMI OUT 2 will cycle
through the hardware video sources (VGA > HDMI
1 > HDMI 2 > USB-C > VGA >… ) for output.
LED Status:
Follow LED: Lights up when Follow
mode is
selected.
Matrix LED: Lights up when Matrix
mode is
selected.
5 USB Connect to a U-disk for firmware upgrade.
Connect to the USB Dongle for pairing up with each
other.
6
Reset Hold press this button for five or more seconds and then
release, it will automatically reboot and restore to its factory
defaults.
Rear Panel
876
1110952 4
311
No. Name Description
1 Antenna Connect to the antenna pair provided for the access to
Miracast and soft AP function.
2
DC 12V
Connect to the power adapter provided.
3 VGA In Connect to a VGA source for video input as well as
analog audio input.
4
HDMI In 1-2
Connect to an HDMI source device.
5
USB-C In
Connect to a USB-C video source.
6
USB Hub Connect to the USB device (e.g. mouse, keyboard, USB
audio) for USB extension between USB device and
USB host.
7 USB Host Connect to USB host device for USB extension between
USB device and USB host.
8
RS232 1-2
• RS232-1: Reserved.

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• RS232-2: Connect to a RS232-
enabled device
such as a projector to control the projector.
Pins TX, RX, GND are used to control the
connected projector.
Pins 12V, GND are used to provide 12VDC
power.
9 LAN Connect to a network device (e.g. network switch,
router, computer, etc.) for LAN control (Web GUI &
Telnet API) and Airplay Mirroring signal input.
10
Audio Out
Connect to an audio receiver (e.g. amplifier) for audio
output.
11
HDMI Out 1-2
Connect to an HDMI display device.

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Specifications
Technical
Input Video Port 1 x VGA; 2 x HDMI; 1 x USB-C;
1 x LAN, 10/100/1000 Mbps Ethernet; 1 x WLAN
Input Resolutions •VGA:
640x4808,9, 720x4808, 720x5766, 800x6008,
1024x7688,9, 1280x7207,8, 1280x8008,
1280x10248,9, 1360x7688, 1366x7688,
1400x10508, 1440x9008, 1600x9008,
1600x12008,9, 1920x10806,8
•HDMI/USB-C:
640x4808, 800x6008, 1024x7688, 1280x7688,
1280x8008, 1280x10248, 1360x7688, 1366x7688,
1440x9008, 1400x10508, 1600x12008, 1680x10508,
1920x12008, 720x4808(480p), 720x5766(576p),
1280x7205(720p30), 1280x7206(720p50),
1280x7208(720p60), 1920x10802(1080p24),
1920x10803(1080p25), 1920x10805(1080p30),
1920x10806(1080p50), 1920x10808(1080p60),
3840x21605(2160p30)
•LAN/WLAN: Up to 1920x10808(1080p60)
Note: The input resolution support for LAN or WLAN
may vary according to the specific BYOD protocols
and devices.
1 = at 23.98 Hz, 2 = at 24 Hz, 3 = at 25 Hz, 4 = at 29.97 Hz, 5 = at
30 Hz, 6 = at 50 Hz, 7 = at 59.94 Hz, 8 = 60 Hz, 9 = 75 Hz
Output Video Port
2 x HDMI, 1x Ethernet port ( AV over IP)
Output Resolutions For HDMI OUT 1:
720x4808(480p60), 720x5766(576p60), 640x4808,
800x6008, 1024x7688, 1280x10248, 1366x7688,
1440x9008, 1280x8008, 1680x10508, 1920x21605,
1600x12008, 1920x12008, 2560x14405, 2560x14408,
1280x7206(720p50), 1280x7208(720p60),
1920x10806(1080i50), 1920x10808(1080i60),
1920x10802(1080p24), 1920x10803(1080p25),
1920x10805(1080p30) , 1920x10806(1080p50),
1920x10808(1080p60), 3840x21602(2160p24) ,
3840x2160
3
(2160p25) , 3840x2160
5
(2160p30) ,

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3840x21606(2160p50) , 3840x21608(2160p60)
For HDMI OUT 2:
Up to 1920x10808(1080p60)
1 = at 23.98 Hz, 2 = at 24 Hz, 3 = at 25 Hz, 4 = at 29.97 Hz, 5 = at
30 Hz, 6 = at 50 Hz, 7 = at 59.94 Hz, 8 = 60 Hz, 9 = 75 Hz
For AV Over IP
Up to 1920x10808(1080p60)
1 = at 23.98 Hz, 2 = at 24 Hz, 3 = at 25 Hz, 4 = at 29.97 Hz, 5 = at
30 Hz, 6 = at 50 Hz, 7 = at 59.94 Hz, 8 = 60 Hz
Input Audio Port 2 x HDMI, 1 x USB-C, 1 x LAN, 1 x Analog Audio, 1 x
WLAN
Input Audio Format
RAW PCM, 16 bit, 32/44.1/48KHz sps; PCM 2.0
Output Audio Port
2 x HDMI, 1 x Analog Audio
Output Audio Format
RAW PCM, 16 bit, 32/44.1/48KHz sps; PCM 2.0
Control Method
Front panel buttons; Web UI; Telnet API/CLI
Wi-Fi
Standard
IEEE 802.11 a/b/g/n/ac
Frequency
Dual bands, 2.4~2.4835GHz, 5.0~5.8GHz
Throughout
2T x 2R, up to 867Mbps
Security
WEP, TKIP, AES, WPA, WPA2
General
Operating Temperature
0°C to 45°C (32°F to 113°F)
Storage Temperature
-20°C to 70°C (-4°F to 158°F)
Humidity
10% to 90%, non-condensing
ESD Protection Human-body Model:
±8kV (Air-gap discharge)/
±4kV (Contact discharge)
Power Supply
12 V 1 A DC
Power Consumption
20W (Max)
Device Dimension
(W x H x D)
215 mm x 42 mm x 140.2 mm / 8.46'' x 1.65'' x 5.52''
Net Weight
1.0kg/2.2lbs

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Installation and Wiring
Installation
Note:
Before installation, please ensure the switcher is disconnected from the
power source.
It is recommended that you remove other WiFi hotspot devices nearby (if
any) so to prevent potential interferences on screen projection.
Attaching Antennas
1. Attach the antenna provided to the threaded connector and screw it into
place rotating clockwise.
2. Repeat the above step for another antenna.
Attaching Installation Brackets
1. Attach the installation bracket to the enclosure using the screws
provided in the package separately.
2. The bracket is attached to the enclosure as shown.

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3. Repeat steps 1-2 for the other side of the switcher.
4. Attach the brackets to the surface you want to hold the switcher against
using screws (provided by others).
Wiring
Warnings:
Before wiring, disconnect the power from all devices.
During wiring, connect and disconnect the cables gently.
See below application diagram:
USB Audio
MacBook
PC
AUDIO
USB-CVGA
Display
LaptopLaptop
HDMI
USB
USB
Ethernet Switch
Amplifier
Wi-Fi AP
Dongle Sender
Dongle Sender
USB Camera

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Note:
If you connect the switcher to an Ethernet Switch, please ensure the
switch is able to forward messages from the 224.0.0.251 multicast
group. Most non-managed switches meet this requirement.
If a managed switch is to be used, you must contact the network
administrator or switch supplier to ensure the above requirement is met,
and consider adjusting the switch configuration if necessary.

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Key Function
AV over IP
Application
In the following application:
The switcher works with ALF-IP2HD decoders through an Ethernet
switch to build a flexible distributed presentation system, achieving
point-to-point and point-to-multipoint applications.
Once the ALF-IP2HD decoders are connected to the system, they pair
up with the switcher automatically and output picture, no additional
operation is required.
Screen Layout Switch
The switcher supports automatic/manual switching on Multiview screen
layout, i.e. multiple video sources can be displayed in Multiview form on a
single screen.
By default, the screen layout switching mode is set as automatic switching for
the switcher, and the preset screen layouts allows for up to sixteen video
sources to be displayed on a screen as the following:

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Note:
As the video sources to be displayed increase or decrease, the switcher
will automatically change to a new screen layout so that all video
sources can be displayed appropriately on the whole screen.
As the video sources increase up until there’s no available screen layout
that allows for all these sources to be displayed on the screen, when a
new video source inputs:
1) The source that displays on the screen for the longest will be
replaced by the latest input source;
2) The latest input source will display on the main window* of the
screen. (*By default, the main window lies in the upper left of the
screen.)
The switcher also offers manual switching on the screen layout, which allows
you to customize Multiview screen layout (up to 16 views), switching
sequence and main window. For more information, please see the separate
API documentation.

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Automatic Signal Switching
Automatic signal switching function allows you to easily and quickly output
desired sources. By default, automatic signal switching function is set as
enabled.
1. When a video source inputs, the switcher will automatically output and
display it on the screen.
2. When a new video source inputs in the case that there’s no available
screen layout for all these video sources to be displayed, the switcher
will have this new video source displayed on the screen’s main window
and remove the video that displays on screen for the longest.
3. As the video sources increase or decrease, the switcher will change to a
new screen layout automatically so that all video sources can be
displayed appropriately on the whole screen.
4. If all video sources are removed, the switcher will output the Guide
Screen picture.
The switcher also offers three methods of switching to specific video source
manually:
1) Using the front panel buttons to output corresponding hardware video
source.
2) Using web UI.
3) Using API commands. For more information please see the separate API
documentation.

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Screen Mirroring
With screen mirroring support, the switcher allows users to wirelessly share
multimedia from their devices on any HDMI displays. The switcher allows
users to perform screen mirroring over Airplay Mirroring and Miracast.
(1) Screen Mirroring over Airplay
Take iPhone 8 (iOS 13.1) for example:
1. Connect your iPhone to the soft AP of the switcher.
Soft AP SSID: same as switcher’s device name and can be
obtained from OSD at the upper right of the display screen; by
default, it is set as SMW42S.
Password: set through Web GUI or API and can be obtained from
OSD at the bottom right of the display screen; by default, it is set as
12345678.
2. Slide up from the bottom of the iPhone’s screen to show the control
center. Click Screen Mirroring and choose the device name in the
pop-up list. The display will output the screen of iPhone.
3. To disconnect iPhone from the switcher: click Stop Mirroring, the