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Installation Guide

AT-OMNI-121

1

OmniStream 121 Single-Channel Networked AV Decoder

AT-OMNI-121

The Atlona 

OmniStream™ 121 (AT-OMNI-121)

 is a networked AV decoder for an OmniStream-

encoded video stream up to 4K/UHD, as well as embedded audio and RS-232 control. 

OmniStream is designed for distributing AV over Gigabit Ethernet in enterprises and other large-

scale installations. The OmniStream 121 features SMPTE VC-2 visually lossless compression 

with extremely low, sub-frame latency, as well as AES-128 encryption and SMPTE 2022-5 

forward error correction. For professional AV integration, it includes an HDMI output, 4K/UHD 

scaling with 4:4:4 processing, aspect ratio control, multi-channel PCM audio downmixing, audio 

embedding and de-embedding, and more. This decoder is housed in a half rack width enclosure. 

The OmniStream 121 can conveniently be powered over the network through Power over 

Ethernet (PoE), as well as from local AC power.

1 x AT-OMNI-121

1 x Captive screw connector, 3-pin

1 x Captive screw connector, 5-pin

1 x Push spring connector, 6-pin

2 x Push spring connectors, 5-pin

1 x Wall/table mounting brackets

1 x Installation Guide

IMPORTANT

Visit http://www.atlona.com/product/AT-OMNI-121 for the latest firmware 

updates and User Manual.

Operating Notes

Package Contents

• 

OmniStream requires the Atlona Management System (AMS) which provides discovery, 

management, and configuration assistance.  AMS is a free application that can be 

downloaded from the Atlona web site at http://atlona.com/product/at-sw-ams/

• 

OmniStream uses mDNS as the discovery mechanism.  In order for mDNS to function 

properly, there must not be restrictions applied to the network.  VPN can be used to 

connect to a computer that is running AMS, on the same network.  However, VPN cannot 

be used when AMS is running on the local machine.

Summary of Contents for OmniStream 121

Page 1: ...losure The OmniStream 121 can conveniently be powered over the network through Power over Ethernet PoE as well as from local AC power 1 x AT OMNI 121 1 x Captive screw connector 3 pin 1 x Captive screw connector 5 pin 1 x Push spring connector 6 pin 2 x Push spring connectors 5 pin 1 x Wall table mounting brackets 1 x Installation Guide IMPORTANT Visit http www atlona com product AT OMNI 121 for t...

Page 2: ...from this port to an HD display 5 ETHERNET Connect an Ethernet cable from this port to the Local Area Network LAN 6 RS 232 Use the included captive screw connector to connect an RS 232 device to this port 7 AUDIO Connect the included push spring connectors to embed audio on the output stream and or connect to an audio output device Refer to Audio on page 3 for more information 8 DC 48V Connect the...

Page 3: ... audio on the output stream and output downmixed 2 channel PCM using the included captive screw or push spring connectors This step is optional If AUDIO IN or AUDIO OUT will be used then connect the included 5 pin captive screw connectors as shown below If both AUDIO IN and AUDIO OUT ports will be used then connect the included 5 pin push spring connectors as shown on the next page RS 232 Audio GN...

Page 4: ...screw connector to the RS 232 port on the decoder 4 The PWR indicator on the front panel display the power status of the decoder When the decoder is powered using either PoE or the optional 48V DC power supply not included the LED initially turns red After a few moments it will turn amber and finally green If using non tinned stranded wire press the orange tab above the terminal while inserting th...

Page 5: ...rovide added stability to the mounting bracket use two of the included screws and attach them to the two holes directly below the enclosure screws as shown above 5 Repeat steps 1 through 4 to attach the second mounting bracket to the opposite side of the unit 6 Mount the unit using the oval shaped holes on each mounting bracket If using a drywall surface a 6 drywall screw is recommended 1 2 HDMI P...

Page 6: ...discover the IP address of the decoder 1 Launch the Atlona Management System app 2 Launch a web browser and enter localhost 8080 in the address field 3 Enter the login information on the AMS web page then click the Login button Login admin Password admin123 4 Under the Domain View panel locate the IP address for the decoder Decoders will be labeled as OMNI 121 Connection Diagram AT OM NI 121 ET HE...

Page 7: ...cator is red Connect an Ethernet cable to the ETHERNET port s Check the Ethernet cable for possible damage or loose connections OmniStream decoders are not displayed in AMS Verify that AMS and the decoder are on the same network If a DHCP server is not found within 60 seconds the decoder will be placed in Auto IP mode and assigned an IP address within the range of 169 254 xxx xxx If so then connec...

Page 8: ... Atlona Inc All other brand names and trademarks or registered trademarks are the property of their respective owners Pricing specifications and availability subject to change without notice Actual products product images and online product images may vary from images shown here Version 1 atlona com 408 962 0515 877 536 3976 ...

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