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User Manual
MediaHub
With 4-way Video Distribution
Model MH4-4K
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Introduction
The Model MH4-4K adds multiple video outputs to the MediaHub platform. For
demo systems that require multiple video sinks, the Model MH4-4K acts as its own
1:4 distribution amplier. Connect up to four HDMI sinks (televisions, soundbars,
A-V receivers, etc.) to the player; each output provides identical 4K@60 video
signal, and individual CEC control of the sink.
Features
• BrightSign® Digital Signage Module
• Four HDMI® outputs (4096x2160@60Hz)
• Individual CEC control via HDMI
• Dual-purpose 3.5mm audio output jack (digital or analog)
• Customizable push-button ports (RJ9 x4)
• Control ports for peripherals (RJ45)
• USB port for touch screen or other peripherals
• Ethernet port for remote updates
RS-232
CONTROL
NULL MODEM
SWITCH
FOUR HDMI OUTPUTS
(OUTPUT 1 SINK)
RS-485
CONTROL
3
STATUS
LIGHTS
ETHERNET
12V POWER
BUS INPUT
USB
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Four HDMI Outputs
The four HDMI outputs deliver video via HDMI cables to four HDMI display screens,
AVRs or sound bars. CEC commands can be used to control the sync device.
Video File Information
MPEG-4 encoded videos are supported with maximum video resolution up to
4K@60. Test all les before deployment. See BrightSign specications for details:
www.brightsign.biz/application/les/7715/5111/4033/HS4-02252019.pdf
Audio Output
The MH4-4K connects to any device that can accept digital Toslink®, or low-level
analog audio via its dual-purpose output jack. The jack outputs digital or analog
audio as directed by BrightAuthor settings. The audio signals on each HDMI output
may be turned off and on via software.
PUSH-BUTTONS
DIGITAL OR ANALOG
AUDIO OUTPUT
Push-Buttons
To control media using push-buttons, connect
EasyPlug push-buttons to each RJ9 position.
Compatible push-buttons are available in several
colors; shown below is the button illuminated with blue
LED ring.
MicroSD Card Slot
The programming instructions for custom functionality
are stored on a microSD card with the video and audio
les. Media les placed on the root of the microSD
card autoplay on power up. If the microSD card is
updated to add new video les, check to make sure
any custom programming remains on the card.
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MICRO SD
The EasyPlug push-button has an
RJ9 connector for easy installation
and long term reliability.
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Serial Communication
Control Port (RS-232)
The MH4-4K can send and receive serial commands via RS-232. The the port may
be set for Null or Straight using the switch located beside the RS-232 port. The
port is a modular RJ-45 jack; adapter cables are available for 3.5mm or DB-9 serial
ports.
Control Bus (RS-485)
The RS-485 control bus allows the MH4-4K to interact with devices such as the
Audio Authority TouchSelect panels or the 1895 Visual Volume knob. The MH4-4K
can also control switch modules or ampliers that are linked via the Control Bus.
The MH4-4K is unit ID 0, all on-board push-button positions respond to commands
addressed to ID 0. All commands are echoed on the RS-232 control port and
RS-485 control bus, regardless of ID.
External Settings (RS-232)
Internal Settings
Baud rate may be changed via BrightAuthor.
Port 0
Default Baud Rate 115200
Data Bits 8
Parity None
Stop Bits 1
Changing the Baud Rate (RS-232)
Control Bus Settings (RS-485)
Baud Rate 57600
Protocol Control Bus (RS485)
Baud Rate 115200
Data Bits 8
Parity None
Stop Bits 1
Protocol ASCII
Send EOL CR
Receive EOL CR
In BrightAuthor, select the proper Baud rate to communicate to external serial
devices. The MH4-4K is always ID 0.
STRUCTURE EXAMPLE RESULT
[BAUD#_#] [BAUD0_9600] MH4-4K ID 0 BAUD RATE SET TO 9600
[BAUD#_#] [BAUD0_115200] MH4-4K ID 0 BAUD RATE SET TO 115200
[BAUD#_#] [BAUD0_19200] MH4-4K ID 0 BAUD RATE SET TO 19200
[BAUD#_#] [BAUD0_57600] MH4-4K ID 0 BAUD RATE SET TO 57600
[BAUD#_#] [BAUD0_38400] MH4-4K ID 0 BAUD RATE SET TO 38400
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Sample Button Commands
STRUCTURE EXAMPLE RESULT
[PRESS#=#] [PRESS0_2] MH4-4K PSB 2 PRESS SENT
[RELEASE#] [RELEASE0_2] MH4-4K PSB 2 RELEASE SENT
[BLINK#_#] [BLINK0_4] MH4-4K PSB 4 LED BLINKS
[BLINK#_#,#,#,#] [BLINK0_1,2,3,4] MH4-4K PSB 1,2,3,4 LEDS BLINK
[LEDON#_#] [LEDON0_6] MH4-4K PSB 6 LED ACTIVATES
[LEDON#_#,#,#,#] [LEDON0_3,4,5,6] MH4-4K PSB 3,4,5,6 LEDS ACTIVATE
[LEDOFF#_#] [LEDOFF0_6] MH4-4K PSB 6 LED DEACTIVATES
[LEDALLOFF] [LEDALLOFF] DEACTIVATES ALL LEDS ON ALL DEVICES
BrightAuthor CEC Settings for the MH4-4K
Select BrightControl for CEC routing of HDMI 1-4 commands. Use [CECSELECT#]
where # equals HDMI output 1 through 4.
Firmware Update
Visit www.audioauthority.com/MH4-4K for rmware update instructions.
IInstallation
• Attach the player to a at surface with the screws provided.
• Load programming and media les onto a compatible and properly formatted
microSD card.
• Connect EasyPlug push-buttons, touch panels or touch screen.
• Connect power adapter to AC power, then to the MH4-4K power port.
• Connect audio output(s) to an amplier, headphone amplier or switching
system if desired.
• Connect HDMI cables from the display sinks to the four MH4-4K HDMI ports.
• For more information check our website: audioauthority.com/MH4-4K.
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CONTROL BUS
DIGITAL AUDIO
DIGITAL AUDIO
HDMI
CONTROL BUS
MH4-4K 1821
The MH4-4K distributes video to
four HDMI sink devices, while the
1821 switcher handles audio for
sound bars. A TouchSelect panel by
each sound bar allows the customer
to activate the sound bar, adjust
volume, and toggle the audio from
Example System: Sound Bar vs. TV Sound Comparison
sound bar to TV speakers. Since the
TVs receive audio via HDMI, the TV
sound toggle function is performed
by muting the TV using CEC control
signals via the HDMI connection – a
function not available on standard
HDMI distribution amps. At the same
instant, the 1821 switcher activates
the sound bar via optical signals. The
whole experience is orchestrated by a
BrightAuthor program on the MH4-4K
MediaHub.
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2048 Mercer Road, Lexington, KY 40511-1071 USA
800-322-8346 • 859-233-4599 • Fax: 859-233-4510
support@audioauthority.com • www.audioauthority.com
E-186
Rev.20190625
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