Panduit Atlona OmniStream AT-OMNI-121 User manual

Installation Guide
AT-OMNI-121
1
OmniStream 121 Single-Channel Networked AV Decoder
AT-OMNI-121
The Atlona AT-OMNI-121 is a networked AV decoder for HDMI / HDCP 2.2 output supporting
resolutions up to 4K/60 4:4:4 and HDR (High Dynamic Range), plus audio embedding and
de-embedding, and RS-232 or IR control pass-through. OmniStream is designed for high
performance, exible distribution of AV over standard, o-the-shelf Gigabit Ethernet switches
in commercial audiovisual applications. The OMNI-121 decoder features the advanced VCx™
codec which delivers 4K/60 4:4:4 video from encode to decode, with artifact-free presentation of
computer-generated content and fast-motion video, and ultra-low latency less than one frame.
Additionally, the OMNI-121 features multiview window processing, with the ability to ingest up to
four streams from AT-OMNI-111 encoders and display them simultaneously on a single screen.
This decoder is housed in a half-width rack enclosure with front-to-back air ow, and is ideal for
high-density, compact installation in distributed, multi-display installations.
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
Package Contents
IMPORTANT: Visit http://www.atlona.com/product/AT-OMNI-121 for the latest
rmware updates and User Manual.
• OmniStream uses mDNS as the discovery mechanism. In order for mDNS to function
properly, there must not be restrictions applied to the network.
Operating Notes

Installation Guide
AT-OMNI-121
2
AT-OMNI-121
ETHERNET
RS-232
AUDIO
OUT
IN
LR
DC 48V
RX TX
1
HDMI OUT
TM
O MNI S TREAM
LINKPWR
ID
Panel Descriptions
1 PWR
This LED indicator is green when the unit is
powered and booted.
2 LINK
This LED indicator is green when the link
integrity between the decoder and the
network switch is good.
3 ID
This button provides two functions:
(1) Press and release this button to send
a broadcast network notication to any
devices that may be listening (Velocity).
(2) Press and hold this button for 30
seconds to perform a factory-reset of the
unit. Refer to the OmniStream Decoder
User Manual for more information.
4 REBOOT
Use a pointed object to press this recessed
button and reboot the unit.
5 HDMI OUT
Connect an HDMI cable from this port to a
UHD/HD display.
6 ETHERNET
Connect an Ethernet cable from this port to
the Local Area Network (LAN).
7 RS-232
Use the included Euroblock push-spring
connector to connect an RS-232 device to
this port.
8 AUDIO IN / OUT
Connect the included Euroblock push-
spring connectors to the AUDIO IN port to
embed audio on the HDMI OUT port.
To de-embed the HDMI audio, connect the
push-spring connectors to the AUDIO OUT
port. Refer to Audio on page 6 for more
information.
9 DC 48V
Connect the optional 48V DC power supply
to this power receptacle. This power supply
is available, separately, and is required for
embedding and de-embedding of analog
audio.
1 2 3 4
6 8 957

Installation Guide
AT-OMNI-121
3
AT-OMNI-121
ETHERNET
RS-232
AUDIO
OUT
IN
LR
DC 48V
RX TX
1
HDMI OUT
TM
O MNI S TREAM
LINKPWR ID
1. Connect an Ethernet cable from the ETHERNET port on the decoder to a PoE-capable
switch on the Local Area Network (LAN). Note that if a PoE-capable switch is not available,
the 48V DC power supply (sold separately) must be connected to the decoder.
2. Connect an HDMI cable from the UHD/HD display to the HDMI OUT port on the decoder.
3. If using RS-232, connect the included 6-pin Euroblock push-spring 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 nally green.
Installation
The AT-OMNI-121 is powered by PoE (Power over Ethernet), when connected to a PoE-capable
switch. If a PoE-switch is not used, then the optional 48 V power supply (Atlona part no. AT-PS-
48083-C) can be purchased, separately. Insert the positive and negative leads, from the power
supply, into the terminals of the 2-pin captive screw connector block, as shown. The orange
2-pin captive screw connector block is included with the OmniStream power supply package.
Power Supply (optional)
AT-OMNI-121
ETHERNET
RS-232
AUDIO
OUT
IN
LR
DC 48V
RX TX
1
HDMI OUT
IMPORTANT: The external power supply must be connected to the decoder
when embedding and de-embedding audio using the AUDIO IN and/or AUDIO
OUT ports.
POS
White
Black NEG
PWR indicator

Installation Guide
AT-OMNI-121
4
The AT-OMNI-121 provides transport of RS-232 protocol over IP which allows communication
between a control system and an RS-232 device. This step is optional.
1. Use wire strippers to remove a portion of the cable jacket.
2. Remove at least 3/16” (5 mm) from the insulation of the RX, TX, and GND wires.
3. Insert the TX, RX, and GND wires into correct terminal on the included captive screw
connector, following the wiring diagram below.
Note that the included 6-pin push-spring connector can be used, if desired, in place of the
captive screw connector. Only the RS-232 1 port is available on the decoder.
RS-232
GND
RX
TX
NOTE: Typical DB9 connectors use pin 2 for TX, pin 3 for RX, and pin 5 for
ground. On some devices, the function of pins 2 and 3 are reversed.
IR
The same port that provides RS-232 connections also supports bidirectional IR pass-through,
allowing a device to be controlled from either the headend or the decoder endpoint. This step is
optional. IR control is only supported on RS-232 2 port (bottom set of connectors).
IR emitter conguration IR extender conguration
GND (black)
IR emitter
SIGNAL (white/black)
RX TX GND
GND (black)
SIGNAL (white/black)
Control
Unit
TX out
GND
RX TX GND

Installation Guide
AT-OMNI-121
5
If using non-tinned stranded wire, press the orange tab, above the terminal, while inserting
the exposed wire
NOTE: Unbalanced XLR audio requires Pin 1 and Pin 3 to be connected.
The same wiring applies to both captive screw and push spring connectors.
AT-OMNI-121
ETHERNET
RS-232
AUDIO
OUT
IN
LR
DC 48V
RX TX
1
HDMI OUT
Push tab
to unlock
GND
Side View Side View
-
+
GND
+
-
Unbalanced RCA audio
1 2
3
1 2
3
GND GND
+
-+
-
1 2
3
1 2
3
GND GND
+
-+
-
Balanced XLR audio
Unbalanced XLR audio
The AT-OMNI-121 provides the ability to embed 2-channel analog audio on the HDMI OUT port
or de-embed HDMI audio on the AUDIO OUT port. De-embedded HDMI audio is downmixed to
2-channel PCM. 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 below.
Audio
2-channel analog audio output (bottom)
2-channel analog audio input (top)
AT-OMNI-121
ETHERNET
RS-232
AUDIO
OUT
IN
LR
DC 48V
RX TX
1
HDMI OUT
AT-OMNI-121
ETHERNET
RS-232
AUDIO
OUT
IN
LR
DC 48V
RX TX
1
HDMI OUT
IMPORTANT: Audio embedding and de-embedding, using the analog audio
outputs, requires the optional OmniStream power supply (AT-PS-48083-C).

Installation Guide
AT-OMNI-121
6
Accessing OmniStream using the built-in Web Server
1. Launch the desired web browser and enter the IP address or domain name of the decoder
in the address bar.
2. Enter the username and password. Note that the password eld will always be masked.
The default credentials are:
Username: admin
Password: Atlona
3. The System Information page will be displayed.

Installation Guide
AT-OMNI-121
7
The AT-OMNI-121 decoder includes two
mounting brackets and four mounting screws,
which can be used to attach the unit to any at
surface.
1. Using a small Phillips screwdriver, remove
the two screws from the left side of the
enclosure.
2. Position one of the mounting brackets, as
shown below, aligning the holes on the
side of the enclosure with one set of holes
on the mounting bracket.
3. Use the enclosure screws to secure the
mounting bracket to the enclosure.
4. To provide 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
HDMIPWR
1
2
LINK DISPLAY INPUT ID
VOLUME
AT-OMNI-112
1
2
HDMIPWR
1
2
LINK DISPLAY INPUT ID
VOLUME
AT-OMNI-112
1
2
HDMI
PWR
1
2
LINK DISPLAY INPUT ID
VOLUME
AT-OMNI-112
NOTE: Mounting brackets can
also be inverted to mount the
unit under a table or other at
surface.
Mounting Instructions
Included screws

Installation Guide
AT-OMNI-121
8
Version 4
®
The terms HDMI, HDMI High-Denition Multimedia Interface, and the HDMI Logo are trademarks or
registered trademarks of HDMI licensing Administrator, Inc.
© 2023 Atlona Inc. All rights reserved. “Atlona” and the Atlona logo are registered trademarks of Atlona Inc. All other brand names and trademarks or registered
trademarks are the property of their respective owners. Pricing, specications and availability subject to change without notice. Actual products, product images, and
online product images may vary from images shown here.
English Declaration of Conformity
The English version can be found under the resources tab at:
https://atlona.com/product/at-omni-121/.
Warranty
Chinese Declaration of Conformity 中国RoHS合格声明
To view the product warranty, use the following link or QR code:
https://atlona.com/warranty/.
由SKU列出於:
https://atlona.com/about-us/china-rohs/.
US International
atlona.com •408.962.0515 •41.43.508.4321
25323-R4