AV Access 4KMV41 User manual

4KMV41
4x1 4K HDMI Multi-viewer
User Manual

Disclaimers
The information in this manual has been carefully checked and is believed to be
accurate. AV Access Technology Limited assumes no responsibility for any
infringements of patents or other rights of third parties which may result from its
use.
AV Access Technology Limited assumes no responsibility for any inaccuracies that
may be contained in this document. AV Access Technology Limited also makes no
commitment to update or to keep current the information contained in this
document.
AV Access Technology Limited reserves the right to make improvements to this
document and/or product at any time and without notice.
Copyright
Copy, Reproduce, Distribute and/or Edit of this document or part of it as well as
utilization of its contents and communication thereof to others without express
authorization are prohibited. Offenders will be held liable for payment of damages.
All rights created by patent grant or registration of a utility model or design patent
are reserved. Copyright ©2017 AV Access Technology Limited All rights reserved.
Trademarks Notice
All products or service names mentioned in this document may be trademarks of
the companies with which they are associated.
Contact Us
Business inquiry: [email protected]
Technical problems: suppo[email protected]

Important Safety Instructions
Do not expose this device to rain, moisture, dripping or splashing. No objects
filled with liquids, such as vases, shall be placed on the device.
Do not install or place this unit in a bookcase, built-in cabinet, or in another
confined space. Ensure the unit is well ventilated.
To prevent risk of electric shock or fire hazard due to overheating, do not
obstruct the unit’s ventilation openings with newspapers, tablecloths,
curtains, or similar items.
Do not install near any heat sources such as radiators, heat registers, stoves,
or other device (including amplifiers) that produce heat.
Do not place sources of naked flames, such as lighted candles, on the unit.
Clean this device only with dry cloth.
Unplug this device during lightning storms or when unused for long periods
of time.
Protect the power cord from being walked on or pinched, particularly at
plugs.
Only use attachments / accessories specified by the manufacturer.
Refer all servicing to qualified service personnel

www.avaccess.com 1 [e-mail]
Table of Contents
Introduction..........................................................................................................2
Overview .................................................................................................................................. 2
Features .................................................................................................................................... 2
Package Contents.................................................................................................................. 3
Panel .......................................................................................................................................... 3
Front Panel...................................................................................................................... 3
Rear Panel ....................................................................................................................... 4
Application ...........................................................................................................5
Layout Modes Switching ......................................................................................6
Layout Modes Introduction................................................................................................ 6
IR Remote Operation ............................................................................................................ 7
Front Panel Operation .......................................................................................................... 9
RS232 Control ....................................................................................................................... 11
Display Modes Switching......................................................................................... 11
Specifications .....................................................................................................13
Trouble Shooting................................................................................................15
Warranty .............................................................................................................16

Introduction
www.avaccess.com 2 [e-mail]
Introduction
Overview
4KMV41 is a multi-screen video processor which supports 4K input and output. It
features up to 4 channels of 4K/UHD video signals to be simultaneously displayed
on one 4K/UHD display. It also supports seamless switching between 4 input
signals, and supports multiple screen layouts such as Original, Dual-view and
Quad to meet different image display needs. It can be controlled by multiple
methods including front panel buttons, IR remote and RS232.
Features
4 HDMI Inputs and 1 HDMI Output.
HDMI inputs and HDMI output support resolutions up to 4K@30Hz 4:4:4 8bit.
All HDMI inputs and output support HDCP 1.4.
Supports multiple-view function, multiple inputs can be displayed on one
display.
Supports multiple screen layout modes, including Original, Dual-view, Master
mode, PIP mode and Quad mode.
Supports seamless switching of four inputs in the same layout.
Supports audio switching function through front panel button in Dual-view,
Master mode, PIP mode and Quad mode.
Rich control options, including IR Remote, front panel buttons and RS232
control.

Introduction
www.avaccess.com 3 [e-mail]
Package Contents
Before you start the installation of the product, please check the package
contents:
Video Processor x 1
Power Adapter (DC 12V, 2A) with US Pins x 1
IR Remote x 1
IR Receiver x 1
Phoenix Male Connector (3.5mm, 3-Pin) x 1
Rubber Feet x 4
User Manual x 1
Panel
Front Panel
1 2 3 45
No. Name Description
1 Power LED
On: The device is powered on.
Off: The device is powered off.
2 HDMI Input Select
1~4 buttons: Press the button to enter the
Original mode and switch to the corresponding
HDMI In source.
LED: LED is located on the left of the button.
On: The HDMI source is connected to the
corresponding HDMI In port.
Off: The HDMI source is not connected to the

Introduction
www.avaccess.com 4 [e-mail]
No. Name Description
corresponding HDMI In port.
3 IR window Receive IR signals.
4 Mode
Press the button continuously to cycle among the
five layout modes and the selected source or
combinations of sources in each mode. (More
detail information, please refer to “Front Panel
Operation” section).
5 Audio
Short press to switch audio channel in some
layout modes.
Hold press the button for about 5s to mute the
audio in current mode. (More detail information,
please refer to “Front Panel Operation” section).
Rear Panel
1 2 3 4 5
No. Name Description
1 DC 12V Connect to the DC 12V power adapter provided.
2 HDMI In 1~4 Connect to HDMI sources such as Xbox, PS3, STB.
3 HDMI Out Connect to an HDMI display.
4 RS232 Connect to a RS232 control device for API control
(including firmware upgrade).
5 IR Ext. Connect to the IR receiver cable provided.

Application
www.avaccess.com 5 [e-mail]
Application
XboxDisplay
HDMI IN HDMI OUTHDMI IN
PS3/PS4
Blu-ray Player
HDMI IN HDMI IN
1
Connect HDMI
sources such as Xbox,
STB, Blu-ray player to
HDMI In 1~4 ports.
2
Connect an HDMI
display such as a TV to
HDMI Out port.
3
Connect the IR receiver
provided to IR Ext. port,
and point the IR remote to
the receiver head or point
the remote to IR window
directly of front panel.
4
Connect DC 12V power adapter
provided to DC 12V port.
Power Supply
Processor Remote
PC
1 2
3 4

Layout Modes Switching
www.avaccess.com 6 [e-mail]
Layout Modes Switching
Layout Modes Introduction
The processor supports 5 layout modes on the connected display, including
Original mode, Dual-view mode, Quad mode, PIP mode and Master mode.
(1) Original mode: Only one original input signal source without image
processing is selected to be shown on the connected display. In this mode,
the processor supports seamless switching (See Figure 1).
(2) Dual-view mode: Two input signals are selected simultaneously to be
shown as two screens in same size on the connected display (See Figure 2).
It supports switching between HDMI In1, 2, and HDMI In 3, 4.
(3) Quad mode: The four HDMI input sources is shown as 4 screens in same size
simultaneously on the connected display (See Figure 3).
(4) PIP mode: Two input signals are selected simultaneously to be shown as
two screens on the connected display. The smaller screen covers on the
lower left corner above the larger one (See Figure 4), it supports switching
between HDMI In 1, 2, and HDMI In 3, 4.
(5) Master mode: The four HDMI input sources is shown as 4 screens
simultaneously on the connected display (See Figure 5). The master input
can be selected from HDMI In 1~4, and the slave screens are in same size.
Figure 1
1
Figure 2
1 2

Layout Modes Switching
www.avaccess.com 7 [e-mail]
Figure 3
1 2
3 4
Figure 4
1
2
Figure 5
1
2
3
4
Users can switch among the four inputs and five modes through processor
remote, front panel buttons and RS232 (API commands).
IR Remote Operation
Users can switch among the four inputs and five modes for the output display by
pointing the processor IR remote directly to the IR window on front panel or point
to the IR receiver head connected to the rear panel.

Layout Modes Switching
www.avaccess.com 8 [e-mail]
Button Function
Press the button to turn on/off HDMI output of the device.
Press the button to switch output resolution between 4K and 1080P.
Press to switch to original mode, and select HDMI In 1 as signal source.
(Buttons 2, 3 and 4 are same as Button 1).
Press the button to switch audio channel in current layout mode.
a. In Original mode, the audio is set to the channel of the current
screen, and can’t be switched.
b. In Dual-view mode and PIP mode, press the button to switch
audio channel between the two sources selected currently.
c. In Quad mode and Master mode, press the button to switch
among the four screens. The switching sequence is 1-2-3-4.
Press the button to mute the audio in current layout mode. Press
to switch audio channel to exit mute mode.
Press the button to switch to Original mode, and press continuously to
switch among HDMI In 1~4 sources.
Press the button to switch to Dual-view mode.
a. : Select HDMI In 1 and 2 as current sources.

Layout Modes Switching
www.avaccess.com 9 [e-mail]
Button Function
b. : Select HDMI In 3 and 4 as current sources.
Press the button to switch to PIP mode, and press again to switch to
next group sources.
a. Group 1: Big screen: HDMI In 1; Small Screen: HDMI In 2.
b. Group 2: Big screen: HDMI In 3; Small screen: HDMI In 4.
Press the button to switch to Quad mode.
Press the button to switch to Master mode.
Press this button continuously to cycle 1-2-3-4 to the Master screen.
Front Panel Operation
Users can switch among the four inputs and five modes through front panel
buttons.
1. Press one HDMI Input button to switch to Original mode and display the
selected input source.
Press one HDMI Input button to
enter original mode and display
the corresponding source.
2. Press “Mode” button continuously to cycle through among the five layout
modes and the selected source or combinations of sources in each mode.
Press “Mode” button continuously, the connected display will switch the
sources and modes in sequence as follows: -> … -> -> …
Press “Mode” button continuously to cycle through among
the five layout modes and the selected source or combinations
of sources in each mode.
3. Press “Audio” button to switch audio channel in current layout mode.

Layout Modes Switching
www.avaccess.com 10 [e-mail]
a. In Original mode, the audio is set to the channel of the current screen,
and can’t be switched.
b. In Dual-view mode and PIP mode, press the button to switch audio
channel between the two sources selected currently.
c. In Quad mode and Master mode, press the button to switch among the
four screens. The switching sequence is 1-2-3-4.
Hold “Audio” button for about 5s to mute the audio in current layout mode.
Press the button again to switch audio channel to exit mute mode.
Short press Audio to switch audio channel in some layout modes.
Long Press the button to mute the audio in current mode.

Layout Modes Switching
www.avaccess.com 11 [e-mail]
RS232 Control
Advanced users may need to control the processor through RS232 serial
communication. Connect a control PC or control system to the RS232 port of the
processor. API command for RS232 control is available in the separate document
“API Command Set_4KMV41”. A professional RS232 serial interface software (e.g.
Serial Assist) may be needed as well.
Before executing the API command through RS232 serial connection, please
ensure RS232 interface of the device and the control PC are configured correctly.
Parameters Value
Baud Rate 115200 bps
Data Bits 8 bits
Parity None
Stop Bits 1 bit
Flow Control None
Display Modes Switching
By default, when switching screen layout to Dual-view mode or Master mode, the
image on the display is shown in normal aspect ratio in order to keep it
undistorted, as shown in Figure 1. If users want to set the image to stretch to fill
the entire display screen, as shown in Figure 2, users can send command “SET
DISPLAY MODE FULL<CR><LF>” to the device through RS232 port.
Full screen mode and normal aspect ratio mode can be switched through the
command “SET DISPLAY MODE prm<CR><LF>”. Detail information about API
commands, please refer to the separate document “API Command Set_4KMV41”.

Layout Modes Switching
www.avaccess.com 12 [e-mail]
Figure 1
Figure 2

Specifications
www.avaccess.com 13 [e-mail]
Specifications
Technical
Input/Output Port 4 x HDMI In, 1 x HDMI Out, 1 x RS232, 1 x IR Ext.,
1 x DC 12V IN
Input/Output Signal Type Input/Output: HDMI with 4K@30Hz 4:4:4 8bit, HDCP
1.4
Input/Output Resolution
Supported
VESA:
800x6008, 1280x9608, 1280x10248,1360x7688,
1366x7688, 1600x9008, 1600x12008, 3840x21602,3,5
SMPTE:
1280x720P6, 1920x1080P1,2,3,4,5,6,7,8, 3840x21602,3,5,
1 = at 23.98 Hz, 2 = at 24 Hz, 3 = at 25 Hz, 4 = at
29.97Hz, 5 = at 30 Hz, 6 = at 50 Hz, 7 = at 59.94 Hz, 8
= 60 Hz
Audio Format Stereo
Maximum Data Rate 10.2 Gbps
Control Method IR Remote, Front Panel Buttons, RS232 (API
Commands)

Specifications
www.avaccess.com 14 [e-mail]
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 DC 12V 2A
Power Consumption
(Max) 8.97W
Device Dimension
(W x H x D)
230.03mm x 25mm x 142.6mm/9.06” x 0.98” x
5.61”
Product Weight 0.54kg/1.19lb
Transmission Distance
Cable Type Range
HDMI 15m/50ft

Trouble Shooting
www.avaccess.com 15 [e-mail]
Trouble Shooting
Steps of Regular Troubleshooting Routine
1Power: Please make sure all devices are powered on. (source, processor,
display devices)
2Indicator: Please make sure LED indicators of the device are normal
according to user manual.
3Devices: Please make sure picture can be shown normally when connecting
source to display devices directly.
4Cable: Plug in and out HDMI cable or try another HDMI cable.
5Compatibility: Please test other source and display devices to determine
whether it is a compatibility issue.
FAQ
1No Picture
The device supports 4K and 1080P output modes, press the “4K/1080P”
button on the remote to switch between the two output modes.
2No Sound
Please check whether the mute function of the device is set to enable (the
mute button is pressed), press the “Audio” button on front panel or press
button of the remote to switch audio channel to exit mute mode.

Warranty
www.avaccess.com 16 [e-mail]
Warranty
Products are backed by a limited 3-year parts and labor warranty. For the
following cases AV Access Technology Limited shall charge for the service(s)
claimed for the product if the product is still remediable and the warranty card
becomes unenforceable or inapplicable.
1. The original serial number (specified by AV Access Technology Limited)
labeled on the product has been removed, erased, replaced, defaced or is
illegible.
2. The warranty has expired.
3. The defects are caused by the fact that the product is repaired, dismantled
or altered by anyone that is not from an AV Access Technology Limited
authorized service partner. The defects are caused by the fact that the
product is used or handled improperly, roughly or not as instructed in the
applicable User Guide.
4. The defects are caused by any force majeure including but not limited to
accidents, fire, earthquake, lightning, tsunami and war.
5. The service, configuration and gifts promised by salesman only but not
covered by normal contract.
6. AV Access Technology Limited preserves the right for interpretation of these
cases above and to make changes to them at any time without notice.
Thank you for choosing products from AV Access.

AV Access Technology Limited
V1.0.0