Atlona OmniStream 238 is a device that enables users to receive and distribute audio over a network. It can receive up to 16 channels of audio from a variety of sources, including other OmniStream encoders, and then output that audio to up to 16 different destinations. This makes it ideal for use in a variety of applications, such as whole-house audio systems, commercial AV systems, and more. Some of the key features of the OmniStream 238 include:
- Support for up to 16 channels of audio
- AES67-compatible audio over IP streaming
- Programmable gain control for each output
- Balanced and unbalanced outputs
Atlona OmniStream 238 is a device that enables users to receive and distribute audio over a network. It can receive up to 16 channels of audio from a variety of sources, including other OmniStream encoders, and then output that audio to up to 16 different destinations. This makes it ideal for use in a variety of applications, such as whole-house audio systems, commercial AV systems, and more. Some of the key features of the OmniStream 238 include:
- Support for up to 16 channels of audio
- AES67-compatible audio over IP streaming
- Programmable gain control for each output
- Balanced and unbalanced outputs
Installation Guide
AT-OMNI-238
1
OmniStream Dual-Channel Dante Networked Audio Interface
AT-OMNI-238
The Atlona OmniStream™ 238 (AT-OMNI-238) receives audio streamed from OmniStream 512
encoders, and delivers up to 16 audio outputs, congurable as eight stereo pairs or sixteen
mono channels. It is part of the OmniStream R-Type Series, designed for high performance,
exible distribution of AV over Gigabit Ethernet in residential and light commercial applications.
OmniStream features industry standard, AES67-compatible audio over IP streaming. Up to
sixteen channels of PCM audio can be received by the OmniStream 238. An audio stream can be
routed to one or more unbalanced or balanced outputs, each with programmable gain control.
The OmniStream 238 is ideal for feeding audio from HDMI sources into a whole-house audio
system, as well as multiple audio zones in a commercial AV application.
1 x OmniStream 238
16 x Captive screw connector (3 pin)
1 x Wall/Rack mounting brackets
1 x Installation Guide
Package Contents
Operating Notes
• To ensure stable connection, disable 802.3 Energy Ecient Ethernet (EEE) on connected
Ethernet switches.
• OmniStream requires AMS 2.0 (Atlona Management System) for discovery and
management. AMS 2.0 is available from https://atlona.com/AMS for free. Two options can
be used for installation: The free Linux based software download or the easy to install server
hardware (AT-AMS-HW).
• Connection issues may occur if control software is used over VPN. Ensure the software and
OMNI-238 are on the same network.
IMPORTANT: Visit https://atlona.com/product/AT-OMNI-238 for the latest documentation.
Installation Guide
AT-OMNI-238
2
Panel Descriptions
Audio
LINE/MIC IN
-
+
LINE/MIC IN
-
+
Connect to an audio DSP, amplier,
or other audio distribution or
player devices. Either balanced or
unbalanced connections may be
used.
Negative
-
+
Positive
+
Positive
Ground
Ground
Balanced Unbalanced
Installation
1 Connect an Ethernet cable from the network switch to one of the Ethernet ports.
2 Connect included DC 24V power supply into the unit and the wall/power management
switcher.
3 *Optional* Connect an Ethernet cable from the remaining Ethernet port to one of the
Ethernet ports of another AT-OMNI-238 for cascading without the need to connect each
individual OMNI 238 directly to a network switch.
4 Connect captive screw connectors from the outputs to audio players/distribution devices.
OMNISTREAM
IP TO ANALOG AUDIO BRIDGE
1 2
DC 24V
+
-
+
-
+
-
+
-
ETHERNET
AT-OMNI-238
5 7
15
To prevent shorts or damage, ensure no exposed wires touch
Balanced:
Connect audio wires as: Positive (+), Negative (-), and Ground ( )
Unbalanced:
Connect audio wires as: Positive (+) and Ground ( )
4
2
1
6
8
10
12 14
16
!
!
+
+
-
9 11 13
1 ETHERNET
Connect one port to an Ethernet switch
for audio streams and control and one
port to another AT-OMNI-238 for up to 8
cascades.
2 LINE OUT
Connect to an audio DSP, amplier, or
other audio players/distribution devices.
3 DC 24V
Connect included power supply from an
outlet to this port.
1 2 3
Installation Guide
AT-OMNI-238
3
Mounting Instructions
1
2
DC 24V
+
-
+
-
+
-
+
-
ETHERNET
AT-OMNI-238
5 7
15
To prevent shorts or damage, ensure no exposed wires touch
Balanced:
Connect audio wires as: Positive (+), Negative (-), and Ground ( )
Unbalanced:
Connect audio wires as: Positive (+) and Ground ( )
4
2
1
6
8 10 12 14
16
!
!
+
+
-
9 11 13
O
MNI
S
TREAM
IP TO ANALOG AUDIO BRIDGE
1 Remove the AT-OMNI-238 from the box.
2 Install the OMNI-238 into a rack, using four rack screws.
NOTE: Increase the air ow as needed to
maintain the recommended temperature
inside the rack.
NOTE: Do not exceed the maximum weight
loads for the rack. Install heaver equipment in
the lower part of the rack for stability.
Installation Guide
AT-OMNI-238
4
Auto IP mode
If no DHCP server is detected after 30 seconds, then the unit will be placed in Auto IP mode and
will be assigned a link-local IP address of 169.254.XXX.XXX.
IP
DHCP mode
By default, the OmniStream 238 is set to DHCP mode. In this mode, the unit is connected to the
Local Area Network (LAN), and will automatically be assigned an IP address by the DHCP server.
Cascading Instructions
1 Install the units into a rack, following the mounting instructions.
2 Run an Ethernet cable from the unit connected to the network switch into the next OMNI-
238.
3 Repeat the process for up to 8 units.
NOTE: For signal stability, it is recommended not to exceed 8 units in a cascade
chain.
O
MNI
S
TREAM
IP TO ANALOG AUDIO BRIDGE
1 2
DC 24V
+
-
+
-
+
-
+
-
ETHERNET
AT-OMNI-238
5 7
15
To prevent shorts or damage, ensure no exposed wires touch
Balanced:
Connect audio wires as: Positive (+), Negative (-), and Ground ( )
Unbalanced:
Connect audio wires as: Positive (+) and Ground ( )
4
2
1
6
8
10
12 14
16
!
!
+
+
-
9 11 13
O
MNI
S
TREAM
IP TO ANALOG AUDIO BRIDGE
1 2
DC 24V
+
-
+
-
+
-
+
-
ETHERNET
AT-OMNI-238
5 7
15
To prevent shorts or damage, ensure no exposed wires touch
Balanced:
Connect audio wires as: Positive (+), Negative (-), and Ground ( )
Unbalanced:
Connect audio wires as: Positive (+) and Ground ( )
4
2
1
6
8
10
12 14
16
!
!
+
+
-
9 11 13
O
MNI
S
TREAM
IP TO ANALOG AUDIO BRIDGE
1 2
DC 24V
+
-
+
-
+
-
+
-
ETHERNET
AT-OMNI-238
5 7
15
To prevent shorts or damage, ensure no exposed wires touch
Balanced:
Connect audio wires as: Positive (+), Negative (-), and Ground ( )
Unbalanced:
Connect audio wires as: Positive (+) and Ground ( )
4
2
1
6
8
10
12 14
16
!
!
+
+
-
9 11 13
Installation Guide
AT-OMNI-238
5
Software
Dante Controller
For use within a Dante system, Dante Controller is compatible with the AT-OMNI-238.
To download the software, go to http://www.audinate.com. The software will be found under
products > software > Dante Controller. The download button is found on the right side of the
page. Follow the instructions for downloading.
Once downloaded and installed, the AT-OMNI-238 will be automatically detected as long as the
PC running Dante Controller and OmniStream 238 are on the same network.
AMS 2.0
For full conguration of the OMNI 238, AMS 2.0 is available from https://atlona.com/AMS for free.
Two options can be used for installation: The free Linux based software download or the easy to
install server hardware (AT-AMS-HW).
Once AMS has been set up:
1 Open a browser on the same network as AMS 2.0 and go to the IP of AMS 2.0.
a. View the AMS 2.0 installation instructions on how to nd the IP of the software.
2. Enter the login information on the AMS 2.0 web page, then click the Login button.
3 View the AT-OMNI-238 manual for routing and conguration.
Installation Guide
AT-OMNI-238
6
Connection Diagram
OmniStream Encoders
AT-OMNI-238
Zone
Amplifier
Dante Audio Source
CH1POWER CH2 CH3 CH4
CH5 CH6 CH7 CH8
I
0
8-Channel
Professional Amplifer
HDMI
PWR
LINK
TM
O
MNI
S
TREAM
VOLUME
DISPLAY
INPUT
ID
1 2 1 2
HDMI
PWR
LINK
TM
O
MNI
S
TREAM
VOLUME
DISPLAY
INPUT
ID
1 2 1 2
HDMI
PWR
LINK
TM
O
MNI
S
TREAM
VOLUME
DISPLAY
INPUT
ID
1 2 1 2
Audio
A / V
Ethernet
Ethernet
Ethernet
Ethernet
Audio
A / V
A / V
Ethernet
Audio
Zone 1
AV LAN
Zone n + 1
tv
SET-TOP BOX
OK
224
AT-HDR-H2H-44M
1
2
3 4
RS-232 IR IN
HDMI IN LAN FW DC 24V
S
RXTX
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
O
MNI
S
TREAM
IP TO ANALOG AUDIO BRIDGE
DEVICE:
STATUS
PRESET:
1
AUDIO SOURCE
OK
STATUS:
USB
POWER
SET PWR
Audio
Installation Guide
AT-OMNI-238
7
Troubleshooting
Problem Cause Solution
I am not receiving any
audio from my OMNI
Incorrect audio modes,
stream names, or mute
being active can cause
audio loss.
• Log into AMS 2.0 and go
to device conguration
(view AT-OMNI-238 for
instructions) to ensure that
each audio stream is in the
correct audio mode.
• In AMS 2.0, go to device
conguration and ensure that
each audio stream has the
correct name.
• Within AMS 2.0, check that
the audio channel has not
been muted or that the
volume is not turned all the
way down.
Installation Guide
AT-OMNI-238
8
© 2016 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, specications 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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Atlona OmniStream 238 is a device that enables users to receive and distribute audio over a network. It can receive up to 16 channels of audio from a variety of sources, including other OmniStream encoders, and then output that audio to up to 16 different destinations. This makes it ideal for use in a variety of applications, such as whole-house audio systems, commercial AV systems, and more. Some of the key features of the OmniStream 238 include:
- Support for up to 16 channels of audio
- AES67-compatible audio over IP streaming
- Programmable gain control for each output
- Balanced and unbalanced outputs
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