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9

Installation Guide

AT-OME-MH21

Resetting to Factory-Defaults

To reset the AT-OME-MH21 to factory-default settings, press and hold the 

RESET

 button for 

approximately 5 seconds.  Release the button when the 

RESET

 LED indicator begins to flash.  

The LED indicator will flash three times to indicate that the reset procedure has completed.

AMS 2.0

Web Server

The AT-OME-MH21 includes a built-in web server, which allows easy management and control of 

all features.  Follow the instructions below to access the web server.

1.  Set the IP mode of the AT-OME-MH21.  Refer t

IP Configuration (page 8)

 for mor

information.

2.  Connect an Ethernet cable from the 

LAN

 port on the AT-OME-MH21 to the Local Area 

Network (LAN).

3.  Connect an HDMI cable from the AT-OME-MH21 to a display, then press the 

SHOW IP

 

button on the front panel to display the IP address.

4.  Launch a web browser and enter the IP address of the unit.

 

5.  The AT-OME-MH21 

Login

 page will be displayed. 

6.  Enter the following information on the 

Login

 page.  Login credentials are case-sensitive.

 

 

Login:  

admin

 

Password:  

 

Atlona 

7.  Click the 

Login

 button.

INPUT

2

1

AT-OME-MH21

DC 5V

LAN

IR OUT

RS-232

HOST USB

USB HUB

L

R

-

-

+

+

TX

RX

TX

OUTPUT

PWR

IP MODE

DISPLAY

AT-OME-MH21

OMEGA

TM

RESET

SHOW IP

INPUT

2

1

 RESET button

For easy configuration of Atlona devices, AMS 2.0 is available from https://atlona.com/AMS for 

free.  Once AMS has been setup, following the instructions below. 

1.  Open a browser on the same network as AMS 2.0 and go to the IP of AMS 2.0.  View the 

AMS 2.0 installation instructions on how to find the IP of the software, if necessary.

2.  Enter the login information on the AMS 2.0 web page, then click the Login button.
3. 

View the AT-OME-MH21 manual for routing and configuration information.

Summary of Contents for ATLONA Omega AT-OME-MH21

Page 1: ...21 is HDCP 2 2 compliant and supports 4K HDR and 4K 60 4 4 4 at HDMI data rates up to 18 Gbps Additionally 4K downscaling to 1080p 60 30 or 24 Hz is available when connected to an HD display The OME MH21 includes USB 3 0 and USB C interfaces for two host PCs plus two peripheral devices such as a camera microphone speakerphone touch enabled display or keyboard and mouse IMPORTANT Visit http www atl...

Page 2: ...tton next to the green LED indicator to switch the IP mode between DHCP and static IP modes The LED indicator will provide the current IP mode Refer to IP Configuration page 8 for more information 5 RESET Press and release this button to reset the unit to factory default settings Refer to Resetting to Factory Defaults page 9 for more information 6 SHOW IP Press and release this button to display t...

Page 3: ... Connect to a computer using a USB B to USB A cable 5 RS 232 IR OUT Connect the included 4 pin captive screw block to this receptacle The RS 232 port provides RS 232 control for the AT OME MH21 and the connected display Refer to RS 232 and IR page 5 for more information 6 LAN Connect an Ethernet cable to this port to control the unit and or to pass Ethernet to a local device 7 DC 5V Connect the in...

Page 4: ...nced Balanced 1 Use wire strippers to remove a portion of the cable jacket 2 Remove at least 3 16 5 mm of insulation from each of the wires 3 Insert the wires into the correct terminals using the included 5 pin captive screw connector 4 Attach the 5 pin connector block to the OUTPUT audio port on the AT OME MH21 GND Side View Side View GND 2 1 3 2 1 3 GND GND Rear View Rear View ...

Page 5: ... 4 Repeat step 2 for the S and GND wires for the IR connection 5 Insert the S signal wire in to the TX terminal and the ground wire to the GND terminal 6 Tighten the captive screws to secure the wires in place Do not over tighten or use high torque devices to prevent damage to the connector block NOTE Typical DB9 connectors use pin 2 for TX pin 3 for RX and pin 5 for ground On some devices functio...

Page 6: ... device to this port using the included captive screw block Refer to Audio Output Connector page 4 for wiring information 5 Connect up to two USB devices to the USB HUB ports 6 Connect a computer to the HOST USB port using a USB A to USB B cable 7 OPTIONAL Connect a serial cable from RS 232 port to a display device Refer to RS 232 and IR page 5 for wiring information Connect an IR emitter to the I...

Page 7: ... the enclosure with one set of holes on the mounting bracket 3 Use the screws from Step 1 to attach the mounting bracket 4 Repeat steps 1 and 2 to attach the second mounting bracket to the opposite side of the unit 5 Mount the unit to a flat surface using the oval shaped holes on each mounting bracket If using a drywall surface a 6 drywall screw is recommended OMEGA TM PW R LINK FW 1 2 3 INPU T TE...

Page 8: ...MH21 is unable to detect a DHCP server within 15 seconds then the unit will use a self assigned IP address within the range of 169 254 xxx xxx Use an IP scanner along with the MAC address on the bottom of the unit to identify the unit on the network If a static IP address is desired the unit can be switched to static IP mode The default static IP address is 192 168 1 254 Switching the IP mode IP M...

Page 9: ...n press the SHOW IP button on the front panel to display the IP address 4 Launch a web browser and enter the IP address of the unit 5 The AT OME MH21 Login page will be displayed 6 Enter the following information on the Login page Login credentials are case sensitive Login admin Password Atlona 7 Click the Login button INPUT 2 1 AT OME MH21 DC 5V LAN IR OUT RS 232 HOST USB USB HUB L R TX RX TX OUT...

Page 10: ...er supply Off Unit is not powered 1 2 Description Solid green The input is the currently selected input Off The input is not selected IP MODE Description Flashes green 4x Flashes four times to indicate that the unit is being set to DHCP mode Refer to IP Configuration page 8 for more information Flashes green 2x Flashes four times to indicate that the unit is being set to DHCP mode Refer to IP Conf...

Page 11: ...11 Installation Guide AT OME MH21 Notes ...

Page 12: ... Actual products product images and online product images may vary from images shown here Toll free US International atlona com 877 536 3976 41 43 508 4321 English Declaration of Conformity Chinese Declaration of Conformity 中国RoHS合格声明 The English version can be found under the resources tab at https atlona com product at ome mh21 由SKU列出於 https atlona com about us china rohs The terms HDMI HDMI Hig...

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