AT-OMNI-521 - Digital decoder Atlona - Free user manual and instructions

Product Type	Single-Channel Networked AV Decoder
Brand	Atlona
Model	AT-OMNI-521
Dimensions (H x W x D)	1.34 x 8.19 x 4.41 in (34 x 208 x 112 mm)
Weight	1.5 lb (0.7 kg)
Power Supply	PoE (Power over Ethernet) or optional 48V DC power supply (sold separately)
Video Input	OmniStream-encoded video stream (via network)
Video Output	HDMI 2.0, up to 4K/UHD @ 60 Hz with HDR10, HLG, Dolby Vision
Audio	Embedded audio pass-through; AES67 support up to LPCM 7.1 channels
Control	RS-232 (via terminal block), IR pass-through, CEC, TCP Proxy
Compression	VCx (visually lossless) and VC-2 (SMPTE-2042)
Video Wall Support	Yes, up to 2x2 at 4K60, configurable with bezel compensation and rotation
Fast Switching	Yes, with user-configurable timeout
HDCP Compliance	HDCP 2.2
Scrambling/Descrambling	AES-128 encryption, default key 'scrambling'
Management	Built-in web server (HTTP/HTTPS), Telnet, SSH, CLI
Network Interface	1x Gigabit Ethernet (PoE enabled)
Mounting	Rack ears included; optional OmniStream rack tray (AT-OMNI-1XX-RACK-1RU)
Operating Temperature	0°C to 40°C (32°F to 104°F)
Certifications	CE, FCC, CB, RoHS; NDAA-899 and TAA compliant
Repair	No user-serviceable parts; refer servicing to qualified personnel
Cleaning	Clean with a dry cloth only
Warranty	See https://atlona.com/warranty

Frequently Asked Questions - AT-OMNI-521 Atlona

How do I factory reset the AT-OMNI-521?

Press and hold the ID button on the front panel for approximately 30 seconds until the LEDs flash and turn off. Alternatively, use the Mclear command via CLI or click FACTORY RESET in the web server under System Information.

What video resolutions are supported?

The decoder supports UHD (3840x2160) up to 60 Hz with HDR, 1080p up to 60 Hz, and various VESA resolutions including 1920x1200, 1680x1050, etc. For a full list, refer to the manual's Specifications section.

How do I subscribe to an encoder stream?

Log into the decoder's web server, go to IP Input, enable the input, and enter the multicast IP address and UDP port that match the encoder's session settings. For example, video stream: 226.0.0.1:1000, audio stream: 226.0.10.1:1100.

Can I create a video wall with this decoder?

Yes. Go to HDMI Output > Video Wall, enable it, set the width/height in pixels, and adjust Horizontal/Vertical start coordinates and rotation. Bezel compensation is also available under Edge compensation.

How do I enable fast switching?

In HDMI Output, under Fast Switching, enable the toggle and set a timeout in seconds. Note that enabling fast switching increases latency from 0.5 to 1.5 frames.

What is the default login for the web server?

Username: admin, Password: Atlona (case-sensitive). The password field is masked.

How do I control a display via RS-232?

Connect the RS-232 device to the terminal block on the decoder. Configure the serial port in the web server under Serial (set mode to 'serial' then 'output'). Use the Command window groups to define and trigger commands like Display On/Off.

What is the difference between VCx and VC-2 modes?

VCx is the newer codec supporting 4K60 4:4:4, HDR, and fast switching. VC-2 is an earlier standard (SMPTE-2042) that subsamples 4K to 4:2:0. VCx is recommended for full feature access.

Does the decoder support AES67 audio?

Yes. Enable AES67 on the encoder's session and on the decoder's HDMI Output audio input. Ensure the audio source is LPCM (up to 7.1 channels @ 192kHz/24-bit). PTP must be configured for synchronization.

How do I insert a logo or text overlay?

For logos, go to Logo page on the decoder, upload a .png file, then configure size and position. For text, go to Text page, enable, enter text, and adjust scroll speed, color, and location. Logos and text can be assigned to specific HDMI outputs.

USER MANUAL AT-OMNI-521 Atlona

Single-Channel Networked AV Decoder

ATLONA.

a PANDUIT company

Version Information

Version Release Date Notes

13 Jan 2024 Updated warranty information

ATLONA.

a PANDUIT company

Sales, Marketing, and Customer Support

Main Office

Atlona Incorporated

70 Daggett Drive

San Jose, CA 95134

United States

Office: +1.408.962.0515

Sales and Customer Service Hours

Monday - Friday: 6:00 a.m. - 4:30 p.m. (PST)

https://atlona.com/

International Headquarters

Atlona International AG

Tödistrasse 18

8002 Zürich

Switzerland

Office: +41.43.508.4321

Sales and Customer Service Hours

Monday - Friday: 09:00 - 17:00 (UTC +1)

Operating Notes

IMPORTANT: Visit http://www.atlona.com/product/AT-OMNI-521 for the latest firmware updates and User Manual.

Warranty

To view the product warranty, use the following link or QR code:

https://atlona.com/warranty/.

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Important Safety Information

CAUTION

OF ELECTRIC SH DO NOT OPEN

CAUTION: TO REDUCT THE RISK OF

ELECTRIC SHOCK

DO NOT OPEN ENCLOSURE OR EXPOSE TO PAIN OR MOISTURE

NO UGER-SERVICEABLE PARTS

INSIDE REFER SERVICING TO

QUALIFIED SERVICE PERSONNEL

The excision point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance instructions in the literature accompanying the product.

The information bubble is intended to alert the user to helpful or optional operational instructions in the literature accompanying the product.

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this product near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.

8. Do not install or place this product near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of a polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the product.

11. Only use attachments/accessories specified by Atlona.

12. To reduce the risk of electric shock and/or damage to this product, never handle or touch this unit or power cord if your hands are wet or damp. Do not expose this product to rain or moisture.

13. Unplug this product during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualified service personnel. Servicing is required when the product has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the product, the product has been exposed to rain or moisture, does not operate normally, or has been dropped.

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Table of Contents

Introduction	7
Features	7
Package Contents 7
Introduction to OmniStream 8
OmniStream 101 8
IP Address Assignment 8
Network Bandwidth and OmniStream Compression 9
Streams	9
Sessions	9
Subscribing to a Stream 10
OmniStream Naming Schema 11

Panel Description 12

Installation	13
RS-232 Connections 13
IR Connections 14
Connection Instructions 15
Connection Diagram 16

Getting Started 17

ID Button 17
Broadcast Messaging	17
Rebooting OmniStream	17
Resetting to Factory-Defaults	18
Using the ID button	18
Using the Mclear command	18
Using the Web Server	18
LED Indicators	19
Accessing the Web Server	20
Configuration Tutorial	21
Physical Connections	21
Setting the Custom Mode	22

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Table of Contents

Device Operation 35

Device Control 35

Downstream Control using RS-232 35

Control using TCP Proxy 38

Downstream Control using Triggering 40

Upstream Control using RS-232 45

Upstream Control using IR 47

Fast Switching 48

Fast Switching FAQs 49

AES67 Audio 50

Descrambling

Slate / Logo Insertion 54

Adding Slates / Logos 54

Deleting Slates 55

Deleting Logos 55

Text Insertion

Configuring a Static IP Address

Creating Video Walls 58

Introduction

Landscape Mode

Portrait Mode

Bezel Compensation

Configuration and Management Interfaces

Web Server

System information page

SAP Listener page

IP Input page

Serial page

HDMI Output page

Logo page

Text page

Network page

53

56

57

58

59

63

68

69

69

72

73

74

76

81

83

85

ATLONA.

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Introduction

The Atlona OmniStream™ 521 (AT-OMNI-521) is a networked AV decoder for an OmniStream-encoded video stream up to UHD @ 60 Hz and HDR, plus embedded audio and RS-232 or IR control pass-through. It is part of the OmniStream R-Type Series, designed for high performance, flexible distribution of AV over Gigabit Ethernet in residential and commercial applications. The OmniStream 521 is HDCP 2.2 compliant and ideal for the latest as well as emerging UHD and HDR displays. It features visually lossless compression, optimized for motion video, pristine-quality imaging, and extremely low, sub-frame latency from encode to decode – critical for demanding applications such as gaming. This decoder includes an HDMI output, high performance upscaling and downscaling, aspect ratio control, and video wall processing, plus presentation enhancement features such as logo insertion and scrolling on-screen text

Features

• AV decoder for HDMI® up to 4K/UHD, plus embedded audio and RS-232 or IR control pass-through
  • Supports UHD @ 60 Hz plus HDR formats
  • High performance, visually lossless video compression
• Pristine-quality downscaling and upscaling
• Simplify integration with plug-and-play network switch compatibility
• Remotely powered via PoE (Power over Ethernet)
  • Video wall processing
  • Enhance AV presentations with visual enhancements

Package Contents

1 x AT-OMNI-521

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Introduction to OmniStream

OmniStream 101

OmniStream products are similar in principle to matrix switch endpoints: A/V signals are sent from one point (transmitter) to another point (receiver) over category cable. However, OmniStream stands apart from matrix switchers, in that it is an IP-based solution, allowing this data to be sent over a standard IP network. In addition, these endpoints are referred to as encoders and decoders. Encoders act as "transmitters" and decoders act as "receivers".

DEFINITIONS

Encoder - Compresses source signals before sending them out over a network environment.

Decoder – Receives and decompresses signals from an encoder and sends them to an output device, such as a display or other sink device.

IP Address - A unique numerical label that is assigned to each device connected to a network.

IP Address Assignment

Figure 1.1 below, shows an encoder and a decoder, connected through a network switch. As with all network devices, both the encoder and decoder must have unique IP addresses. OmniStream encoders and decoders are DHCP-enabled, by default. This means that when the encoder/decoder is connected to the network, and a DHCP server is available, the encoder/decoder will automatically be assigned an IP address. If no DHCP server is available, then the unit will use a self-assigned IP address within the range of 169.254.xxx.xxx/16. OmniStream devices can also be assigned a static IP address, if necessary. Static IP addressing will be covered in a later section.

Figure 1.1 - An encoder and decoder on a network, with assigned IP addresses.

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Introduction to OmniStream

Network Bandwidth and OmniStream Compression

When sending video and audio over a network, the available bandwidth needs to be managed. Gigabit Ethernet switches are very common and can take advantage of installed Category 5e cable. 10-Gigabit Ethernet switches are available, but are more expensive per port and require Category 6A cable or better. The chart below shows uncompressed data rates for common resolutions. These data rates exceed the available bandwidth of Gigabit Ethernet, but using the compression technology in OmniStream, this video can be streamed over cost-effective Gigabit networks.

Resolution Data Rate*

1920 x 1080p 30 Hz 2.2 Gbps

1920 x 1080p 60 Hz 4.5 Gbps

3840 x 2160p 30 Hz 8.9 Gbps

3840 x 2160p 60 Hz 17.8 Gbps

* Data rate is shown without compression.

OmniStream compresses the source data at the encoder, before it is sent out over the network. This process is known as encoding. OmniStream uses VCx and VC-2 compression, which are intermediate compression schemes and offer lower latency and higher video fidelity than an interframe compression scheme, such as H.264 or H.265. Interframe codecs are typically used by cable or internet providers and use very aggressive bit rates (low bandwidth) with high latency (delay), which results in lag. VCx and VC-2 provide both high quality (high bit rates) and very low-latency for a much more desirable viewing experience.

Streams

The term stream is used throughout this manual, to describe the different types of signals that are transmitted over a network. For example, if a blu-ray player is connected to an encoder, both video and audio are sent to the encoder over an HDMI cable. The term video stream is used to identify the video portion of a signal and audio stream identifies the audio portion of the signal.

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Introduction to OmniStream

Subscribing to a Stream

To receive information from an encoder, the decoder must subscribe to the multicast IP address and UDP port of the stream(s). Note that the decoder does not subscribe to the session, but to the stream(s) within the session. The process of subscribing is similar to changing the channel on a Set-Top Box. For example, in order to view the content on channel 213, the Set-Top Box must be set to channel 213. Similarly, for a decoder to subscribe to an encoder stream, the multicast IP address and UDP port settings on the decoder must be set to the same values as the encoder to which it is subscribed. Note that the management IP address of a unit is different than its multicast IP address.

Figure 1.2 - Diagram of a video and audio stream, transmitted over an Ethernet cable, to the subscribing decoder.

graph LR
    A["Encoder"] --> B["Video\nDestination Multicast/Unicast Address\n376.0.0.1\nDestination UDP Port\n1000"]
    A --> C["Audio\nDestination Multicast/Unicast Address\n226.0.10.1\nDestination UDP Port\n1000"]
    D["Ethernet"] --> E["Video Stream Multicast IP: 226.0.0.1\nAudio Stream\nMulticast IP: 226.0.10.1\nUDP Port: 1000\nUDP Port: 1000"]
    D --> F["Decoder"]
    F --> G["Video\nSubscribed Multicast Address\n376.0.0.1\nPort\n1000"]
    F --> H["Audio\nSubscribed Multicast Address\n226.0.10.1\nPort\n1000"]

Figure 1.3 shows two encoders and a single decoder connected to a network switch. Decoder "C" is subscribed to encoder "A", since the multicast IP addresses and UDP port numbers for both video and audio are set to the same values as encoder "A".

Figure 1.3 - Decoder "C" subscribed to encoder "A".

Encoder IP Address: 192.168.1.96

Multicast IP Address (Video): 226.0.0.2

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Introduction to OmniStream

DEFINITIONS

Stream – Describes the video, audio, or any data that is transmitted from an encoder over the network.

Multicast IP Address - A class-D IP address assigned to a stream.

UDP Port – User Datagram Protocol (UDP) port. Part of the network addressing scheme to send and receive data to the proper destination on a network.

Subscribing – The process of selecting the multicast IP address to "listen to", in order to receive one or more encoder streams at the decoder endpoint.

OmniStream Naming Schema

Each OmniStream model has a different set of inputs and outputs and, depending upon the number of inputs and outputs. The number of supported session will depend upon the encoder model.

Encoders Description
AT-OMNI-111AT-OMNI-111-WP	One HDMI inputOne Ethernet outputSupports up to six sessions
AT-OMNI-112 • Two HDMI inputsTwo Ethernet outputsSupports up to six sessions
AT-OMNI-512 • One HDMI inputOne Ethernet outputSupports up to four sessions

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Panel Description

Front

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.

4 Reboot button

Press this button, using a small, pointed object to reboot the unit.

5 HDMI OUT

Connect an HDMI cable from this port to a UHD/HD display.

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Installation

RS-232 Connections

The AT-OMNI-521 provides RS-232 over IP which allows communication between an automation system and an RS-232 device. This step is optional. Either the top three or bottom three set of terminals can be used for RS-232.

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 push-spring block. If using non-tinned stranded wire, press the orange tab, above the terminal, while inserting the exposed wire. Repeat this step for the TX, RX, and GND connections.

graph TD
    A["Terminal Block 1"] -->|TX| B["Terminal Block 2"]
    A -->|RX| C["Terminal Block 3"]
    A -->|GND| D["Terminal Block 4"]
    B -->|TX| E["Terminal Block 5"]
    B -->|RX| F["Terminal Block 6"]
    B -->|GND| G["Terminal Block 7"]

NOTE: Typical DB9 connectors use pin 2 for TX, pin 3 for RX, and pin 5 for ground. On some devices, pins 2 and 3 are reversed.

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Installation

IR Connections

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. Refer to Device Control (page 35) for more information.

IR emitter configuration

IR extender configuration

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Installation

Connection Instructions

1. Connect an Ethernet cable from the ETHERNET port on the decoder to a PoE-capable switch on the Local Area Network (LAN).

IMPORTANT: If a PoE-capable switch is not available, a PoE injector (purchased separately) must be used.

1. Connect an HDMI cable from the HDMI OUT port to a UHD/HD display.

2. RS-232 (optional)

3. Connect the RS-232 controller/automation system to the RS-232 port on the decoder.

4. Connect the RS-232 device to the RS-232 port on the decoder.

5. IR (optional)

- IR emitter

Connect the IR emitter to the TX and GND pins of the RS-232 2 port. The IR emitter must be placed no more than one inch from the IR sensor on the device, in order to function properly.

- IR extender

Connect the IR extender from the RX and GND pins of the RS-232 2 port to the associated pins on the control system.

1. Once the unit is powered, the PWR indicator, on the front panel, will turn red, then amber, then green.

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Installation

Connection Diagram

graph TD
    A["AT-OMNI-512"] -->|HD48| B["Source"]
    A -->|Ethernet| C["PoE Network Switch"]
    C -->|Ethernet| D["LAN"]
    C -->|Ethernet| E["AT-OMNI-521"]
    E -->|HD48| F["Display"]

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Getting Started

ID Button

The ID button serves two functions:

1. Sends a broadcast message, over the network, to any devices that may be listening.
2. Resets the decoder to factory-default settings.

NOTE: Some older hardware revisions do not have an ID button.

Broadcast Messaging

Press and release the ID button to send a broadcast notification over the network to any devices that may be listening.

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Getting Started

Resetting to Factory-Defaults

WARNING: Performing a factory-default reset will erase all user-programmed settings from the encoder. IP settings are not preserved.

Using the ID button

1. Press and hold the ID button for approximately 30 seconds.
2. The LED indicators on the front panel will flash, then turn "off."
3. The encoder is now reset and will need to be reconfigured.

Using the Mclear command

1. Connect a PC to serial port 1 using a USB to serial cable.
2. Set the PC console port to the following settings: 9600 baud, 8 data bits, 1 stop bit, no parity.
3. Once connected to the CLI, execute the Xclear command.

Using the Web Server

1. Log in to the decoder using the built-in web server. Refer to Accessing the Web Server (page 20) for more information.
2. Click the FACTORY RESET button.

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Getting Started

LED Indicators

The following table provides a listing of front-panel LED indicators and their status:

LED Description
PWR Off • If	using a PoE switch,make	sure that the port on the switch that is connected to the decoder, has PoE enabled. When the decoder is powered using PoE, thePWRindicator will be green.Check the Ethernet cable for possible damage or loose connections.Connect the optional 48V DC power supply (available from atlona.com) to the encoder. When using an external power supply, thePWRindicator will be green.
	Red • The decoder ● booting.
	Amber • The decoder is booting and/or attempting to locate a DHCP server.
	Green • The decoder is ready.
LINK 1 / 2 Red	• The optional 48V DC power supply is connected, but no Ethernet cables are connected between the switch and theETHERNETport(s).Check the Ethernet cable for possible damage or loose connections.
	Amber • The decoder is booting.

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Getting Started

Accessing the Web Server

In order to access the web server of the desired encoder/decoder, the IP address of the encoder must be known. This can be accomplished by using any of the following methods: 1) Running IP scanner software or 2) accessing the encoder using the domain name. When running an IP scanner, both the computer and the OmniStream encoders/decoders must be connected to the same network.

TIP: Ationa recommends downloading and using the Network Assignment Planner, when setting up OmniStream products on the network. Recording this information in this document will provide a "snapshot" of the current OmniStream network configuration. The Network Assignment Planner is available for download on the OmniStream product pages, under the Resources tab.

1. Launch the desired web browser and enter the IP address or domain name of the encoder in the address bar.
2. Enter the username and password. Note that the password field will always be masked. The default credentials are:

Username: admin

Password: Atlona

Username

admin

Password

●●●●●●

ATLONA

m = 311

Figure 10

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Basic Configuration Tutorial

This section provides a tutorial on configuring two AT-OMNI-512 dual-channel encoders and one AT-OMNI-521 single-channel decoder. Make sure the encoders are connected to a source device and that the decoder is connected to a display. Both encoders and the decoder should be connected to the same local network. Refer to Connection Instructions (page 15) for more information.

Physical Connections

graph TD
    A["Laptop"] -->|AT-OMNI-512| B["Encoder #1"]
    B --> C["AT-OMNI-512"]
    C --> D["Encoder #2"]
    D --> E["PoE Network Switch"]
    E --> F["Decoder #1"]
    G["Gaming Console"] -->|AT-OMNI-512| D
    H["LAN"] -->|PoE Network Switch| E
    I["Encoder #2"] -->|AT-OMNI-512| E
    J["Decoder #1"] -->|PoE Network Switch| E

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Basic Configuration Tutorial

Setting the System Mode

OmniStream offers three system modes. These modes will optimize the video, based on the type of information that is being displayed and/or the desired features.

1. Login to the encoder and click System Information in the menu bar.
2. Click the System mode drop-down list and select VCx. This mode will provide access to all of OmniStream 2.0 features.

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Basic Configuration Tutorial

Configuring Inputs

The Input page is used to verify that the encoder recognizes the source device. This page is also used to set the EDID, HDCP version, and provides detailed information about the source signal. The following procedure should be performed on both AT-OMNI-512 encoders.

1. Click Input in the menu bar.
2. Since a source has been connected to the HDMI IN port, the Cable present indicator within the Input 1 window group is green, as shown below. This indicates that an active source is connected to the HDMI port.

If these indicators are red, check that each source is connected to an HDMI IN port. A red indicator may also describe faulty HDMI cables. If the sources are connected, then try different HDMI cables. If the HDMI cable integrity has been verified, then make sure that the output resolution of the source is at least 720p.

TIP: If no signal is being received on the encoder, then it's always a good practice to check the Input screen on the encoder when performing additional troubleshooting.

1. Click the EDID drop-down list to select an EDID. For now, leave this setting at Default HCR MCR. This EDID provides general compatibility with most displays.

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Basic Configuration Tutorial

1. The Video section provides information about the input signal: color depth, subsampling, color space, resolution, frame rate, and HDR (High Dynamic Range). If the HDR indicator is green, this will indicate that HDR content is being transmitted from the source device.
2. The Audio section displays audio information (if present) from the source device: bit depth, the number of audio channels, the audio format, and the frequency.
3. Click SAVE to commit all changes.

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Basic Configuration Tutorial

Encoder Settings

The Encoding page is used to assign an input to an encoder. In addition, this page allows video settings, such as bit depth, and slate/logo settings. Video thumbnails of the source device can also be displayed on this page. The following procedure should be performed on both AT-OMNI-512 encoders.

1. Click Encoding in the menu bar.
2. Under the Encoder 1 window group, click the Input drop-down list and select hdm input1.
3. Click the Bit depth drop-down list to change the bit depth. In this example, it will be set to 8-bit.
4. Click the Thumbnail > Enable toggle switch to enable it and display a thumbnail of the source. When enabled, the toggle switch is orange and a thumbnail of the source will be displayed. If no thumbnail is displayed when this feature is enabled, verify that the source is connected, powered, and is configured correctly under the Input menu.

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Basic Configuration Tutorial

Creating a Session

Before the video and audio (if any) can be sent out over the network, a session must be created on the encoder. The session assigns each stream to a unique multicast IP address and UDP port assignment. Sessions are always created on encoders. The following procedure should be performed on both AT-OMNI-512 encoders, except where noted.

1. Click Session in the menu bar.
2. Under Session 1, the Name field indicates the session name. This value is set to session1 and cannot be changed.

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Basic Configuration Tutorial

Table 2.1 - Recommended multicast IP address for video, audio, and data streams.

Stream Video Audio Data (Control)
First source	226.0.0.1	226.0.10.1	226.0.20.1
Second source	226.0.0.2	226.0.10.2	226.0.20.2
nth source	226.0.0.n	226.0.10.n	226.0.20.n

Table 2.2 - Recommended UDP ports for video, audio, and data streams.

Stream Video Audio Data (Control)
UDP Port	1000 1100 1200

1. Click the Audio > Source drop-down list and select the HDMI audio input for the session. The source is connected to HDMI IN. Therefore, set this to hdi Input1 for Session 1.
2. Click the Audio > Enable toggle switch and make sure it is enabled. When enabled, it will be orange. If disabled, no audio will be streamed from the encoder.
3. Enter the multicast IP address for the audio stream in the Destination IP address field. Refer to Table 2.1, above. In this example, enter 226.0.10.1 for Session 1 on Encoder #1 and 226.0.10.2 for Session 1 on Encoder #2.
   11 Enter the audio stream UDP port in the

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Basic Configuration Tutorial

Subscribing to an Encoder

The next step is to configure the decoder so that it is able to receive video, audio, and/or data (control) streams from the encoder. This process is referred to as "subscribing to the encoder".

Video Configuration

1. Go to the decoder and click IP Input in the menu bar.
2. Locate the Input 1 window group and verify that the Enable toggle switch is enabled. When enabled, the toggle switch will be orange. Perform the same procedure for the Input 2 window group.
3. Under the Input 1 window group, enter 226.0.0.1 in the Multicast address field. Under the Input 2 window group, enter 226.0.0.2 in this field. These multicast IP address are the same addresses that were specified under the Video > Destination IP address field for the encoders.
4. In the Port field, enter 1000 under both Input 1 and Input 2 window groups. These are the same port settings that were entered under the Video > UDP Port section of the encoder.
5. Click the SAVE button, under the Input 1 and Input 2 window groups, to commit changes.

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Basic Configuration Tutorial

Audio Configuration

1. Locate the Input 3 window group and verify that the Enable toggle switch is enabled. When enabled, the toggle switch will be orange. Perform the same procedure for the Input 4 window group.
2. Under the Input 3 window group, enter 226.0.18.1 in the Multicast address field. Under the Input 4 window group, enter 226.0.18.2 in this field. These multicast IP address are the same addresses that were specified under the Audio > Destination IP address field for the encoders.
3. In the Port field, enter 1100 under both Input 3 and Input 4 window groups. These are the same port settings that were entered under the Audio > UDP Port section of the encoder.
4. Click the SAVE button, under the Input 3 and Input 4 window groups to commit changes.

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Basic Configuration Tutorial

Configuring the HDMI Output Stream

1. Click HDMI Output in the menu bar.
2. The Descrambling > Enable toggle switch is enabled by default. When enabled, this toggle will be orange. For this example, leave the setting enabled.
3. The Descrambling > Key field is set to scrambling by default. This is the same key that is being used under the Scrambling > Key field on the encoder, and will allow the decoder to descramble the signal and send it out over the HDMI output to the display. Leave this key at its default setting.
4. Click the HDCP > Version drop-down list and select the HDCP version. 2.2 will work with most sources. However, in this case, an older sink/monitor which doesn't support HDCP 2.2 is being used. Therefore, the value is set to 1.4.
5. Click the Video > Input drop-down list and select the video source. Based on what has been configured, the following options are available:

Video > Input
ip_input1	(226.0,0.1:1000)
ip_input2	(226.0,0.2:1000)
ip_input3	(226.0,10.1:1100)
ip_input4	(226.0,10.2:1100)

Since this is the Video field, a video source should be selected. Referring to Table 2.3, on the previous page, ip_input1 (226.0.0.1:1000) and ip_input2 (226.0.0.2:1000) are video data, from two different encoders. For this example, this field will be set to ip_input1 (226.0.0.1:1000).

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Basic Configuration Tutorial

1. Scroll down to the Audio > Input field and select the desired audio stream. Referring to Table 2.3 (shown below), the audio stream that is associated with encoder 1 is Input 3. Therefore, ip_input3 (226.0.10.1:1100) is selected.

Table 2.3 - Video and Audio information for each encoder.

Encoder #1 Encoder #2

Input Multicast Address / Port

Input 1 Video (226.0.0.1:1000)

Input 3 Audio (226.0.10.1:1100)

Input Multicast Address / Port

Input 2 Video (226.0.0.2:1000)

Input 4 Audio (226.0.10.2:1100)

1. Click the SAVE button to commit changes.

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Basic Configuration Tutorial

Figure 3.1 - Basic OmniStream setup with Decoder #1 subscribed to Encoder #1.

graph TD
    A["Laptop"] -->|N200.0k| B["AT-CMNI-512"]
    B --> C["PCoE Network Switch"]
    C --> D["AT-OMNI-521"]
    D --> E["Podcast"]
    E --> F["Router"]
    F --> G["LAN"]
    H["Gaming Console"] --> I["AT-OMNI-512"]
    I --> J["Router"]
    J --> K["Router"]
    L["Encoder #1 Session 1"] --> M["Destination: IP Backbone (Audio): 296.0.1"]
    L --> N["UDP Port (Audio): 1000"]
    L --> O["Destination: IP Backbone (Audio): 338.0.1"]
    L --> P["UDP Port (Audio): 1100"]

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Basic Configuration Tutorial

Troubleshooting

If no video and/or audio is present on the display, check the following for both Encoder #1 and Encoder #2, unless otherwise noted.

Encoder Checklist

• Verify that all encoders and decoders are set to the same system mode. In this tutorial, both encoders and the decoder should be set to vcx. Refer to Setting the System Mode (page 22).
• Go to the Input menu and make sure that the Cable present indicator, under the Input 1 window group, is green. Refer to Configuring Inputs (page 23) for more information.
• Go to the Encoding menu and verify the following under the Encoder 1 window group. Refer to Encoder Settings (page 25) for more information.
  » Make sure the Input drop-down list is assigned to an input. In this tutorial, the Input field, under the Encoder 1 window group, is set to hdmInput1.
  » Verify that a Thumbnail > Enable toggle switch is enabled and a thumbnail of the source is displayed.

- Go to the Session menu and verify the following under the Session window groups. Refer to Creating a Session (page 26) for more information.

» Check that the Scrambling > Enable toggle switch is enabled. Also check that the Scrambling > Key field, for this example, is set to scrambling.
» Verify that the Video > Enable toggle switch is set to enabled.
» Check the Video > Destination IP address field is set to the correct multicast IP address. In the example, 226.0.0.1. is used on Encoder #1 and 226.0.0.2 is used on Encoder #2.
» Check that the Video > Destination UDP port field is set to 1000.
» Make sure the Audio > Source is set to hdmi_input1.
» Verify that the Audio > Enable toggle switch is enabled.

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Basic Configuration Tutorial

Decoder Checklist

• Verify that all encoders and decoders are set to the same system mode. In this tutorial, both encoders and the decoder should be set to vcx. Refer to Setting the System Mode (page 22).
• Go to the IP Input menu and verify the following. Refer to Subscribing to an Encoder (page 28) for more information.

» Under both the Input 1 and Input 2 window groups, verify that the Enable toggle switch is enabled.
» Check that the Multicast address field is set to the correct multicast IP address. In this example, 226.0.0.1 for Input 1 and 226.0.0.2 for Input 2.
» Check that the Port field is set to the proper port. In this example, 1000 for both Input 1 and Input 2.
» Under both the Input 3 and Input 4 windows groups, verify that the Enable toggle switch is enabled.
» Check that the Multicast address field is set to the correct multicast IP address. In this example, 226.0.10.1 for Input 3 and 226.0.10.2 for Input 4.
» Check that the Port field is set to 1100 for both Input 3 and Input 4.

- Go to the HDMI Output menu and verify the following. Refer to Subscribing to an Encoder (page 28) for more information.

» Make sure that the Descrambling > Enable toggle switch is enabled.
» Verify that the Descrambling > Key field is set to scrambling.
» Check the HDCP > Version field to make sure the correct version is selected. Also note the color of the HDCP > Encrypted indicator. if it is red, then a picture may not be displayed and result in a "blue screen" on the display. Change the HDCP > Version field, if necessary.

IMPORTANT: The scrambling key on a decoder must be identical to the scrambling key on the encoder which is being subscribed. Scrambling keys are case-sensitive.

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Device Operation

Device Control

Downstream Control using RS-232

Control using RS-232 is converted and transmitted over IP by the encoder. Destination devices can either be the IP address of a display or a decoder.

1. Login to the encoder and click the Serial menu.
2. Under the Serial Port Configuration window group, click the Mode drop-down list and select serial.
3. Click the SAVE button.

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Device Operation

1. Click the Session menu.
2. Under the desired Session, locate the AUX section and click the Source drop-down list to select the desired serial port.
3. Click the Enable toggle switch to display the additional fields.
4. Enter the destination IP address and UDP port in the Destination IP address and Destination UDP port fields, respectively.

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Device Operation

1. Login to the decoder and click the IP Input menu.
2. Locate an Input that does not contain a defined Multicast address field. In this example, Input 5 will be used. Note that if a multicast address was used in Step 9, then that multicast address must be entered in the Multicast address field under Input 5.
3. Click the Enable toggle switch to enable the Input. When an Input is enabled, the toggle switch will be orange.
4. Enter the UDP port, from Step 9, in the Port field.
5. Click the SAVE button.

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Device Operation

1. Under the Serial configuration window group, click the Port drop-down list and select the desired port.
2. Click the Mode drop-down list and select output.
3. Click SAVE.

Control using TCP Proxy

TCP/IP traffic received by an encoder or decoder, on the defined IP:Port socket, are translated to RS-232, allowing both control of source or display. Control is achieved using a control system, where all control commands are stored.

1. Login to the encoder or decoder and click the Serial menu.
2. Under the Serial Port Configuration window group, for the desired serial port, click the Mode drop-down list and select serial.
3. Click the SAVE button.

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Device Operation

1. Under the Serial Configuration window group, click the Port drop-down list and select the desired serial port.
2. Click the Mode drop-down list and select Lep proxy.
3. Click the TCPProxy > Interface drop-down list and select the desired Ethernet interface.
4. Enter the listening port in the TCPPProxy > Port field.
5. Click the SAVE button.

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Device Operation

Downstream Control using Triggering

TCP/IP traffic received by an encoder or decoder, on the defined IP:Port socket, are translated to RS-232, allowing both control of source or display. Control is achieved using a control system, where all control commands are stored.

Option 1: Defining Commands on the Decoder

1. Login to the decoder and click the Serial menu.
2. Under the Serial Port Configuration window group, for the desired serial port, click the Mode drop-down list and select Serial.
3. Click the SAVE button.

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Device Operation

1. For each of the available commands, click the Mode drop-down list and select zaw.
   The available commands are: Display On, Display Off, Volume Up, and Volume Down.
2. Enter the command data in either ASCII or hexadecimal format using the ASCII or HEX fields.
3. Click the SAVE button.

1. Open a Telnet/SSH session with the decoder and trigger display control using the following command:

TrigRS237X Y

where x is the number of the serial port: 1, 2

where Y is the command: on, off, vol+, or vol-.

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Device Operation

Option 2: Defining Commands on the Encoder

1. Login to the encoder and click the Serial menu.
2. For each of the available commands, click the Interpret on drop-down list and select decoder.

The available commands are: Display On, Display Off, Volume Up, and Volume Down.

NOTE: Setting the Interpret on drop-down list to encoder implies that commands are defined/stored on the encoder. If set to decoder, commands are defined/stored on the decoder.

1. Enter the command data in either ASCII or hexadecimal format using the ASCII or HEX fields.
2. Click the SAVE button.

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Device Operation

1. Click the Session menu.
2. Under the desired Session, locate the AUX section, click the Source drop-down list, and select Commands.
3. Click the Enable toggle switch to display the additional fields.
4. Enter the destination IP address and UDP port, of the decoder, in the Destination IP address and Destination UDP port fields, respectively. A multicast address can also be entered in the Destination IP address field.
5. Click the SAVE button.

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Device Operation

1. Click the Serial menu.
2. Under Serial port configuration, set the Mode drop-down list to serial.
3. Click the SAVE button.
4. Under Serial configuration, select the desired port.
5. Click the Mode drop-down list and select output.

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Device Operation

Upstream Control using RS-232

The serial interface provides RS-232 control of both downstream and upstream devices. Source control is provided by enabling bidirectional communication.

1. Login to the decoder and click the Serial menu.
2. Under the Serial Port Configuration window group, click the Mode drop-down list and select Serial.
3. Click the SAVE button.

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Device Operation

1. Enter the destination IP address (the IP address of the encoder) and UDP port in the Bidirectional > Destination IP address and Bidirectional > Destination UDP port field, respectively.
2. Click the Bidirectional > Enabled toggle switch to the enabled position. When enabled, the toggle switch will be orange.
3. Click the SAVE button.
4. Login to the encoder and click the Serial menu.
5. Under the Serial Port Configuration window group, click the Mode drop-down list and select Serial.
6. Click the SAVE button.
7. Under the Serial configuration window group, click the Port drop-down list and select not used.
8. Click the SAVE button.

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Device Operation

1. Enter the destination IP address and UDP port in the Destination IP address and Destination UDP port fields, respectively.
2. Click the AUX > Bidirectional toggle switch to enable it. When enabled, the toggle switch will be orange.
3. Click the SAVE button.

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Device Operation

Fast Switching

The VCx codec provides fast switching at resolutions up to 4K YUV 4:4:4 @ 60 Hz. This is an improvement over the VC-2 codecs that limited fast switching up to 1920x1200. When the decoder resolution and frame rate are set to Auto, VCx fast switching operates at the preferred resolution and frame rate of the display. In some cases, this preferred resolution and frame rate might not be the maximum supported by the display. If fast-switching is desired at a supported resolution and/or frame rate other than the preferred resolution and frame rate, the decoder can be manually configured for those resolutions.

The fast switching time depends primarily on three things, when switching between streams: resolution, frame rate, and bitrate. For example, a 4K60 stream operating at 750 Mb/s requires \~250 ms to switch. On the other hand, a 1080p stream operating at 750 Mb/s requires less than 50 ms to switch. The time it takes to switch is determined by the amount of time it takes for all the data for a complete frame to be received by the decoder. To improve the fast switching time, decrease the resolution, lower the frame rate, or increase the bitrate.

IMPORTANT: If Fast Switching is enabled, latency increases from 0.5 frames to 1.5 frames.

1. Login to the decoder and click HDMI Output in the menu.
2. Locate the Fast Switching section and click the Enable toggle switch to enable this feature. When enabled, the toggle switch will be orange.
3. Enter the timeout interval, in seconds, in the Timeout(s) field. If fast switching is enabled and the decoder is switched to a different stream, but the stream is not present, then the decoder will hold the last image on the screen. This image will continue to be displayed until either a new stream appears or the decoder is switched to a different stream. Once the timeout interval has expired, the screen will go black. Setting the timeout interval to 0 disables this feature and the last image will be displayed indefinitely.

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Device Operation

Fast Switching FAQs

Question: Does fast switching work between streams of different resolutions?

Answer: Yes. Fast switching can be used between streams with different resolutions and frame rates.

Question: Does fast switching work between HDR and SDR streams?

Answer: Yes, fast switching can be used between HDR and SDR streams; however, it's important to note that some color artifacts may appear during the switch.

Question: Does fast switching work between single streams and multiviews or between multiviews?

Answer: No. Due to the way multiviews work, fast switching is not supported. However, it is not necessary to change the fast switching setting – the decoder will switch as fast as possible between multiviews and return to fast switching when single streams are used.

Question: Does fast switching work on video walls?

Answer: No. Fast switching is not supported when using video walls.

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Device Operation

AES67 Audio

AES67 audio is a standard for high-performance audio streaming over IP, providing several features such as synchronization, media clock identification, and connection management. AES67 does not support bitstream/compressed audio formats, such as Dolby® Digital, and others. Source audio must be transmitted as LPCM up to eight channels at 192 kHz / 24-bit.

1. Login to the encoder and click Session in the menu bar.
2. Click the SAP > Enable toggle switch to enable SAP. When enabled, the toggle switch will be orange.
3. Locate the Audio section and click the Enable toggle switch. When enabled, the toggle switch will be orange.
4. Click the SAVE button to commit changes.

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Device Operation

1. Go to the decoder and click the SAP Listener menu.
2. Click the Enable toggle switch to enable the SAP listener. When enabled, the toggle switch will be orange.
3. Click the SAVE button.

1. Click the IP Input menu.
2. Select the desired IP input for AES67 audio and click the Enable toggle switch. When enabled, the toggle switch will be orange. In the example below, Input 3 is used.
3. Enter the address in the Multicost address field

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Device Operation

1. Click the HDMI Output menu.
2. Locate the Audio section, click the Audio > Input drop-down list, and select the input that was configured in Steps 10 and 11.
3. Click the Enable AES67 toggle switch to enable it. When enabled, the toggle switch will be orange.
4. Click the SAVE button.

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Device Operation

Descrambling

OmniStream supports 128-bit Advanced Encryption Standard (AES) scrambling and is required for HDCP-encrypted video streams. Scrambling can be enabled or disabled and is applied to individual sessions. In order to function properly, scrambling must be enabled on the encoder and descrambling must be enabled on the decoder. The scrambling and descrambling key on both the decoder and all subscribed encoders must be identical. The default scrambling/descrambling key is scrambling.

1. Login to the decoder.
2. Click HDMI Output in the menu bar.
3. Locate the Descrambling section and click the Descrambling > Enable toggle to enable descrambling. Once enabled, the toggle switch will be orange.
4. Enter the descrambling key in the Key field. This key must match the key specified on the subscribed encoder, under the Scrambling section.
5. Click the SAVE button at the bottom of the HDMI Output window group to commit the changes.

IMPORTANT: If a user-defined key is specified, then it must be a minimum of eight alphanumeric characters. Special characters and spaces are not permitted. Also note that if a key is generated, the same generated key (on the encoder) must also be entered on the decoder, in order to descramble the signal.

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Device Operation

Slate / Logo Insertion

The difference between a “slate” and “logo” is in the size of the image and how it is used: Logos are classified as smaller, low-resolution images that can be positioned at specified locations on the screen. Slates occupy the entire screen. Note that while logos may be used as slates, the image quality will be degraded, as the image will be scaled to fill the screen.

Slate / logo insertion can be performed on both the encoder and decoder. When configured on the encoder, the image that is displayed on the output (decoder) will be from the encoder IP address(es) to which each decoder is subscribed. When configured on the decoder, the image is unique to the specified HDMI output.

Adding Slates / Logos

1. Login to the encoder.
2. Click Logo in the menu bar.
3. Under the New logo window group, enter the name of the logo in the Name field.
4. Click the Choose File button and select the desired image. Only .png or .svg files are valid selections.
5. Click the UPLOAD button to upload the file.
6. A new window group will be created with the name of the logo that was provided in Step 3.
7. Perform one of the following:

- If the selected image will be used as a logo, then proceed with Steps 8 through 13.

- If the image will be used as a slate, skip to Step 14 on the next page.

R Under the Long Inception window group, click the Select Long drop-down list and select the desired logo.

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Device Operation

1. Click Encoding in the menu bar.
2. Click the Slate mode drop-down list, and select Off, Manual, or Auto.

Slate mode Description
Off	Disables the image from being displayed.
Manual	The image will always be displayed, superimposed on the source signal, and will remain even if the source signal is lost.
Auto	The image will only be displayed when the source signal is lost.For example, this mode is useful in conference room applications for displaying system instructions when no sources are connected.

1. Click the Slate logo drop-down list and select the desired image. If Slate Mode is set to off, then this field will not be visible.
2. Click the SAVE button to apply all changes.

Deleting Slates

1. Click Encoding in the menu bar.
2. Under the Encoder window group(s), click the Slate mode drop-down list and select off.
3. Click the SAVE button at the bottom of the window group to commit changes.
4. Click Logo in the menu bar.
5. Click the DELETE button for the logo to be removed.

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Device Operation

Text Insertion

Text can be inserted and scrolled across the screen, making it useful for messages and notifications. Several options are available when using text: Scroll speed adjustment (forward, reverse, or static), number of iterations, text color, vertical / horizontal position, as well as transparency.

1. Login to the decoder.
2. Click Text in the menu bar.
3. Under the Text Insertion window group, click the Enable toggle switch. When enabled, this toggle switch will be orange.
4. In the Text field, enter the desired text.
5. Specify the speed of the scrolling text in the Scroll Speed field. Integer values from -255 to 255 are valid. Negative numbers will scroll the text from left to right. Positive numbers will scroll text from right to left. A value of 0 will not scroll.
6. Enter the number of iterations in the Iteration field. Set this field to 0 (zero) to set the number of iterations to infinity.
7. Click the Color drop-down list to select the color of the text. The Red, Green, and Blue fields can be changed to further modify the color of the text. Adjust the Alpha field to control the transparency of the text. A value of 255 is opaque and a value of 0 is transparent. Numbers from 0 to 255 are valid for each of these fields.
8. Specify the location of the text in the Horizontal (%) and Vertical (%) fields. Each of these values is based on the horizontal and vertical resolution of the video stream.
9. Specify the size of the text in the Width (%) and Height (%) fields. Each of these values is based on the horizontal and vertical resolution of the video stream.
10. Click the SAVE button to commit all changes.

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Device Operation

Configuring a Static IP Address

There will be situations where it is desirable for the encoder to be assigned a static IP address. Some IT environments prefer this method, as opposed to having a DHCP server dynamically assign IP addresses. If the decoder is unable to detect a DHCP server within 15 seconds, then Automatic Private IP Addressing (APIPA) will be used to assign the encoder an address within the IPv4 address block 169.254.xxx.xxx/16. If this occurs, connect an Ethernet cable directly from the ETHERNET port of the encoder to the LAN port of a computer, then follow the instructions below.

1. Login to the web server and click Network in the menu bar.

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Device Operation

Creating Video Walls

Introduction

Before proceeding with creating video walls, review the tables below. These tables provide information on video wall size, maximum timing, color space, and bit depth.

NOTE: OmniStream video walls do not support interlaced sources.

The following table lists the maximum video wall size, based on the resolution of the source.

Resolution Maximum Video Wall Size
4Kp60 2 x 2
4Kp30 16 x 16
1080p60 n x n (no limit)

The following table provides maximum timing, color space, and bit-depth specifications when video walls are enabled.

Number of Channels Resolution Refresh Rate Color Space Bit Depth
1 1920 x 1080p 60 Hz	4:4:4 12-bit
2 1920 x 1080p 30 Hz	4:4:4 12-bit

NOTE: When video walls are enabled, the output resolution at the decoder endpoint is dependent on both the number of channels on the decoder and the input resolution received from the encoder. Refer to the table below for details.

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Device Operation

Landscape Mode

The following diagram will be used to illustrate how to configure a 2 x 2 video wall. The details of this diagram are listed below:

• Four decoders are subscribed to a single encoder. Each decoder is connected to a display.
  • The encoder is transmitting a 3840 x 2160 video signal.
  • The top two displays have been accidentally mounted upside down.

Figure 1.1: Landscape-mode 2x2 video wall requiring adjustment.

graph TD
    A["Encoder"] --> B["CAN"]
    B --> C["Decoder 1"]
    B --> D["Decoder 2"]
    B --> E["Decoder 4"]
    C --> F["1"]
    D --> G["2"]
    E --> H["2"]
    F --> I["1"]
    G --> J["1"]
    H --> K["1"]
    I --> L["4"]
    J --> M["4"]

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Device Operation

Note that the order in which each image is cropped, scaled, and/or rotated is arbitrary. In this example, the configuration process will begin with Display 1, in the top left.

1. Login to the decoder and click the HDMI Output menu.
2. Under the Video section, click the Stretch/Crop Mode drop-down list and select Full Screen. This guarantees that the image will fill the screen.

1. Click the Resolution drop-down list and select 1920x1080. This will scale the output

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Device Operation

1. Enter the starting coordinates of the portion of the source stream that will be displayed on this decoder in the Horizontal and Vertical fields.. These values are the pixel start position (upper left most pixel). The table below lists left and right coordinates for a 2x2 video wall, with the specified source resolution.

Table listing width and height examples for 2x2 video wall.

Source resolution Width (pixels) Height (pixels)
3840 x 2160 (UHD) 1920 10801920 x 1080 (1080p) 960 540

Table listing left and right coordinates for a 2x2 video wall.

Source resolution Upper Left Upper Right Lower Left			Lower Right
3840 x 2160 (UHD)	0, 0	1920, 0	0, 1080	1920, 1080
1920 x 1080 (1080p)	0, 0	960, 0	0, 540	960, 540

1. Click the Rotation drop-down list to select the rotation angle of the image. In this example, select 180 from the drop-down list. The image will be flipped, vertically. This step is only applied when configuring the two top displays.

NOTE: 0 and 180 used for landscape mode video walls and 90 and 270 for portrait mode. Refer to Portrait Mode (page 63) for more information.

The image on Display 1 in the upper-left corner, as illustrated below, has been cropped and rotated and is now

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Device Operation

1. Click the SAVE button at the bottom of the screen to commit changes.
2. Repeat steps 3 through 9 for decoders 2, 3, and 4. Note that in the example below, decoders 3 and 4 will not require any rotation. Therefore, make sure the Rotation option is set to 0 for decoders 3 and 4.

IMPORTANT: When using dual-channel decoders, the Rotation feature can only be used when a single HDMI channel is active. Image rotation is not supported on dual-channel decoders when both HDMI channels are active. Single-channel decoders do not have this restriction.

Once all four decoders have been properly configured, the image will be correctly displayed across all four displays. Refer to the illustration on the next page.

1. Check the image, on each display, and make sure they are aligned correctly with the other images on the video wall. Use the Edge Compensation drop-down list to adjust bezel compensation, if necessary. Refer to Bezel Compensation (page 68) for more information.

Figure 1.3: Landscape-mode 2 x 2 video wall displayed correctly.

graph TD
    A["Encoder"] --> B["LAN"]
    B --> C["Decoder"]
    C --> D["Uncoder"]
    D --> E["2"]
    C --> F["2"]
    B --> G["2"]

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Device Operation

Portrait Mode

IMPORTANT: Portrait Mode is only supported on single-channel decoders.

Images can be rotated 90^ or 270^ to create portrait-oriented video walls. The steps to configure portrait-oriented video walls is very similar to creating landscape video walls.

A similar scenario to the landscape video wall challenge will be used to illustrate how to configure a 1 x 4 portrait-oriented video wall. The details of this diagram are listed below:

• Four decoders are subscribed to a single encoder. Each decoder is connected to a display.
• The encoder is transmitting a 3840 x 2160 video signal.
• Display 2 and 3 have been mounted upside-down.

Figure 2.1: Portait-mode video wall requiring adjustment.

graph TD
    A["Encoder"] --> B["UN"]
    B --> C["Decoder"]
    C --> D["Decoder"]
    D --> E["4"]
    B --> F["3"]
    F --> G["Decodcr"]

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Device Operation

1. Login to the decoder and click HDMI Output in the menu.
2. Under the Video section, click the Stretch/Crop Mode drop-down list and select Full Screen. This guarantees that the image will fill the screen.

1. Click the Resolution drop-down list and select 1920x1080. This will scale the output resolution to 1920x1080.
2. Under the Video Wall section, click the Enable toggle switch to activate the Video wall option.

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Device Operation

1. Enter the starting coordinates of the portion of the source stream that will be displayed on this decoder in the Horizontal and Vertical fields. These values are the pixel start position (upper left most pixel). The table on the next page lists left and right coordinates for a 1x4 video wall, with the specified source resolution.
2. Click the Rotation drop-down list to select the rotation angle of the image. In this example, select 90 from the drop-down list to rotate the image as portrait. The image on Display 1 is now cropped and rotated and is displayed correctly. At this point, one-fourth of the video wall has been configured.
3. Click the SAVE button at the bottom of the screen to commit changes.

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Device Operation

NOTE: 0 and 180 used for landscape mode video walls and 90 and 270 for portrait mode. Refer to Portrait Mode (page 63) for more information.

Table listing width and height examples for 1x4 video wall.

Source resolution Width (pixels) Height (pixels)
3840 x 2160 (UHD) 1920 10801920 x 1080 (1080p) 960 540

Table listing left and right coordinates for a 1x4 video wall.

Source resolution Upper Left Upper Right Lower Left Lower Right
3840 x 2160 (UHD) 0, 0 1920, 0 0, 1080 1920, 1080
1920 x 1080 (1080p) 0, 0 960, 0 0, 540 960, 540

The image on Display 1 is now cropped and rotated and is displayed correctly. At this point, one-fourth of the video wall has been configured.

Figure 2.2: Portait-mode 1 x 4 video wall with Display 1 properly oriented.

graph LR
    A["Encoder"] --> B["Decoder"]
    B --> C["Feedback Line"]
    C --> A

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Device Operation

1. Repeat steps 3 through 9 for decoders 2, 3, and 4. Since display 2 and 3 were mounted upside-down, they will require a rotation of 180^ (to flip horizontally) + 90^ (to align them as portrait), giving a total rotation of 270^ .

IMPORTANT: When using dual-channel decoders, the Rotation feature can only be used when a single HDMI channel is active. Image rotation is not supported on dual-channel decoders when both HDMI channels are active. Single-channel decoders do not have this restriction.

Once all four decoders have been properly configured, the image will be correctly displayed across all four displays. Refer to the illustration on the next page.

1. Check the image, on each display, and make sure they are aligned correctly with the other images on the video wall. Use the Edge Compensation drop-down list to adjust bevel compensation, if necessary. Refer to Bezel Compensation (page 68) for more information.

Figure 2.3: Portait-mode 1 x 4 video wall displayed correctly.

graph TD
    A["Encoder"] --> B["LAN"]
    B --> C["Decoder 2"]
    B --> D["Decoder 3"]
    B --> E["Decoder 4"]
    C --> F["Signal"]
    D --> F
    E --> F

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Device Operation

Bezel Compensation

Displays have a region where video is not displayed, called the bezel. This can cause display issues when creating video walls. Bezel compensation takes this area into account when a single video source is mapped across multiple displays. Bezel compensation can be adjusted at any time.

The illustration on the left shows a simple 2x2 video wall without bezel compensation. Note how the Atlona logo appears stretched, horizontally. On the right, bezel compensation is used to correct the image.

Image without bezel compensation Image with bezel compensation applied

1. Under the Video Wall section, click the Edge compensation drop-down list and select Bezel compensation.

2. Enter the Top, Bottom, Left, and Right values, as desired. Values can be entered in pixels, inches, or millimeters.

3. On the AVE button of the button of the Osteo window measure to correct clearance

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Configuration and Management Interfaces

Web Server

NOTE: This section assumes that the System mode is set to vcx. If vc-2 video is used, some features on these pages will not be available.

System information page

Eirmware version

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Description

Provides the option of assigning descriptive name to the unit.

Location

Provides the option of assigning a description of where the unit is located.

Timezone

Displays the time zone format. Click the SET TIMEZONE button, to assign the time zone.

Date/Time

Displays the current date and time. Click the SET DATE/TIME button to set these values.

Uptime

Displays the elapsed time since the unit was powered-on or rebooted.

System Temperature

Displays the ambient enclosure temperature.

Die Temperature

Displays the value returned from the die temperature sensor (DTS) on the chip of the PCB.

Power Consumption

Displays the precise power consumption of the encoder.

Hostname

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FACTORY RESET

Click this button to reset the encoder to factory-default settings. When performing a factory reset, the following options can be selected, by clicking the check box. If no options are selected, then the encoder is reset with no factory-default settings.

Option Description

None Checked Resets the decoder with factory-default settings.

Reset User Resets the decoder to factory-default settings and resets custom user information.

Reset Network Resets the decoder to factory-default settings and resets network information.

Reset Defaults Resets the encoder to factory-default settings and restores a default device configuration that includes defined multicast addresses.

IDENTIFY

Click this button to physically identify a unit on the network. Clicking this button will cause all front-panel LED indicators to flash for 10 seconds.

DEBUG

Click this button to instruct the unit to create a debug file. This file is used by Atlona Technical Support Engineers to diagnose internal issues with the unit.

REBOOT

Click this button to perform a soft reboot of the encoder.

SAVE

Click this button to commit changes to the settings on this page.

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Configuration and Management Interfaces

SAP Listener page

Enable

Click this toggle to enable or disable SAP. This feature is enabled when the toggle switch is orange. This is the default setting. If an SAP announcement is picked up, it will be displayed below the SAP window group (as shown here).

...

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Configuration and Management Interfaces

IP Input page

Input window group

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Configuration and Management Interfaces

Serial page

Serial port configuration window groups

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Serial configuration window groups

The following fields apply to both Serial configuration window groups.

Name

The name of the port. This field cannot be changed.

Port

Click this drop-down list to select the desired serial port.

Mode

Click this drop-down list to select the desired control mode. Available values are: cli, tcpproxy, and output. Select tcpproxy to translate received IP control traffic to RS-232 output. Selecting the cli option will force the serial port to function as a Command-Line Interface (CLI) for control of the encoder. Refer to Device Control (page 35) for more information.

SAVE

Click this button to commit all changes within the Serial configuration window group.

Command window groups

By default, window groups for the following commands are created: Display Off, Display On, Volume Down, and Volume Up.

Interpret on

Click this drop-down list to select the endpoint where the command will be processed: encoder or decoder.

ASCII

Enter the ASCII representation of the command string in

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Configuration and Management Interfaces

HDMI Output page

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HDCP > Encrypted

This indicator will be green if the stream content is HDCP-encrypted.

HDCP > Version

Click this drop-down list to select the supported version of HDCP.

HDCP > Negotiated version

Displays the version of HDCP used by the stream.

EDID

This field will display the EDID of the connected display. This raw data can be copied and stored under the EDID, if desired.

Video > Input

Click this drop-down list to select the desired IP input. Available options are ip_input1 - ip_input16, none, generator, and multiview (if configured).

Video > Input status

Displays the input status. If no video stream is detected, then "No active video" will be displayed.

Video > Status

Displays the active video input. If no input is active or detected, then this field will display "No active video".

Video > HDR

This indicator will be green if HDR video is present.

Video > Stretch / Crop Mode

Click this drop-down list to select the aspect ratio.

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Video > Resolution

Click this drop-down list to select the desired output resolution. This is a scaler feature which can either upscale or downscale the output on the decoder. If input is selected, then no scaling will be applied to the output. Select Auto to use the EDID of the sink device to determine the output resolution.

Resolution	1920x1080
Framerate	auto
Slate mode	off

Resolutions
Input 1440x1050
Auto 1440x900
4096x2160 1280x1024
3840x2160 1280x800
1920x1200 1280x768
1920x1060 1280x720
1680x1050 1024x768
1600x900

NOTE: When working with VESA resolutions 1360x768p60 and 1366x768p60, the Resolution drop-down list must be set to Auto.

Video > Framerate

Sets the output frame rate. Available options are auto, 60 Hz, 50 Hz, and 30 Hz, except for the AT-OMNI-122 where the options are auto and 30 Hz.

Video > Slate Mode

Click this drop-down list to select the slate mode. Refer to Slate / Logo Insertion (page 54) for more information.

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Video Wall > Horizontal

The number of video wall rows.

Video Wall > Vertical

The number of video wall columns.

Video Wall > Rotation

Adjusts the rotation angle of the image. Available options are 0, 90, 180, and 270.

Video Wall > Edge compensation

Adjusts edge compensation. Available options are none, bezel compensation, and edge blending.

Video Wall > Top

Offset value for adjusting the top portion of the image. Units are specified in the Unit field.

Video Wall > Bottom

Offset value for adjusting the bottom portion of the image. Units are specified in the Unit field.

Video Wall > Left

Offset value for adjusting the left portion of the image. Units are specified in the Unit field.

Video Wall > Right

Offset value for adjusting the right portion of the image. Units are specified in the Unit field.

Fast Switching > Enable

Click this toggle switch to enable or disable fast-

	Horizontal	0
	Vertical	0
	Rotation (°)	0
	Edge compensation	none
Fast Switching	Enable Horizontal	0
	Vertical	0
	Rotation (°)	0
	Edge compensation	bezel compensation
	Top	0
	Bottom	0
	Left	0
	Right	0
Fast Switching	Enable	0
	Timeout (s)	5
Audio	Input	lp_input3 (225.0 10 1:1100)
	Downmixing	none
	Enable AES67	○

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Audio > Volume

Click the speaker icon on the left to decrease volume. Click the speaker icon on the right to increase volume. Range: 0 to 15.

AUX (CEC)

Click this drop-down list to select the desired IP input for CEC control. Available options are ip_input1 - ip_input12, none, and generator.

Standby > Auto On

Click this toggle switch to enable or disable power-on. When enabled this toggle switch will be green and the power-on command will be sent to the display when an A/V signal is detected.

Standby > Projector Cooldown (s)

Enter the time interval, in seconds, before the projector can be powered-off. This time interval prevents the decoder from sending additional commands until the projector has had time to complete its cool-down process.

Standby > Timeout (s)

Enter the time interval, in seconds, before the next command can be accepted by the display.

Standby > Type

Click this drop-down list to select the display mode.

Type Description

DispSW AVon Display switches on/off, source audio/video signal always on.

DispSW AVSW Display switches on/off, source audio/video signal switches on/off.

AV SW Display is always on, source audio/video signal switches on/off

Always on Display is always on, source audio/video signal always on.

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Logo page

New logo window group

Name

Enter a name for the logo in this field.

Choose File

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Horizontal (%)

Enter the horizontal position of the logo based on the resolution of the video stream.

Vertical (%)

Enter the vertical position of the logo based on the resolution of the video stream.

Width (%)

Enter the width of the logo. This value is based on the horizontal resolution of the video stream.

Height (%)

Enter the height of the logo. This value is based on the vertical resolution of the video stream.

SAVE

Click this button to commit all changes within the Logo Insertion window group.

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Text page

Text insertion window group

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Location > Horizontal

Enter the horizontal position of the text, based on the resolution of the video stream.

Location > Vertical

Enter the vertical position of the text, based on the resolution of the video stream.

Location > Width

Enter the width of the text. This value is based on the horizontal resolution of the video stream.

Location > Height

Enter the height of the text. This value is based on the vertical resolution of the video stream.

SAVE

Click this button to commit all changes within the Text insertion window group.

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Configuration and Management Interfaces

Network page

Network window groups

The following fields apply to both Network window groups. The single-channel decoder will only have one Network window group.

Name

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Link speed

Displays the Ethernet interface link speed in Mbps. This field cannot be modified.

MAC address

Displays the MAC address of the Ethernet interface.

Telnet > Enable

Click this toggle switch to enable or disable Telnet. If disabled, then Telnet sessions to the decoder cannot be established.

Telnet > Authentication

Click this toggle switch to enable or disable Telnet authentication. If enabled, then the toggle switch will be orange. Once enabled, connecting to the decoder using Telnet will require login credentials. The default credentials are:

Username: admin

Password: Ationa

WebUI > Enable HTTP

Click this toggle switch to enable or disable HTTP. If disabled, traffic on port 80 is forbidden.

WebUI > Enable HTTPS

Click this toggle switch to enable or disable HTTPS. If disabled, traffic on port 443 is forbidden.

SAVE

Click this button to commit all changes within the Network window group.

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Configuration and Management Interfaces

PTP page

The PTP page provides options for adjust Precision Time Protocol (PTP) for AES67 audio streams. PTP is used by AES67 to keep all audio streams synchronized.

For a system utilizing PTP, all devices undergo an automatic self-election process to choose the device to be used as the PTP grandmaster (GM) clock, based on the accuracy of the device's clock and the device's configured priority. A lower priority number means the device is more likely to get selected as the GM. OmniStream runs 1 PTP daemon per Ethernet interface.

IMPORTANT: If a new device is added to the network and the GM changes, a brief outage will be experienced while all connected devices synchronize with the new clock. Because of this, Atlona recommends that one unit gets manually defined as the GM and have both Priority 1 and Priority 2 fields be set to 1.

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TTL

Displays the TTL value. The default IPV4 TTL value used for PTP is 8.

Is GM

If the indicator is green, then this interface is the PTP GM.

GM Identity

The grandmaster clock identity.

Master Offset

Displays the grandmaster clock offset.

SAVE

Click this button to commit all changes.

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Configuration and Management Interfaces

LLDP page

The Link Layer Discovery Protocol (LLDP) page returns information about the switch that is connected to the decoder.

NOTE: LLDP must be enabled on the switch that the decoders are connected to, in order for the switch information to be displayed.

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Configuration and Management Interfaces

Configuration page

graph TD
    A["Export configuration"] --> B["Import configuration"]
    B --> C["Upload SSL certificate"]
    C --> D["Upload SSL certificate"]
    D --> E["Export configuration"]
    E --> F["Import configuration"]
    F --> G["Upload SSL certificate"]
    G --> H["Upload SSL certificate"]
    H --> I["Export configuration"]
    I --> J["Import configuration"]
    J --> K["Upload SSL certificate"]
    K --> L["Upload SSL certificate"]
    L --> M["Export configuration"]
    M --> N["Import configuration"]
    N --> O["Upload SSL certificate"]
    O --> P["Export configuration"]
    P --> Q["Import configuration"]
    Q --> R["Upload SSL certificate"]

Import configuration

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Configuration and Management Interfaces

Users page

User window groups

The following fields apply to all User window groups.

Username

Enter the desired usemame in this field.

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Configuration and Management Interfaces

License page

This page displays all installed licenses and allows additional licenses to be installed.

License info window group

This window group lists all installed licences, along with the key code and request codes

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Configuration and Management Interfaces

Upgrade page

This page is used to update the firmware on the encoder.

Upgrade window group

Choose File

Click this button to select the firmware file to be uploaded.

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Appendix

Updating the Firmware

Follow the procedure below to update OmniStream units using the built-in web server.

1. Launch the desired web browser and enter the IP address of the encoder/decoder in the address bar.
2. Enter the username and password. Note that the password field will always be masked. The default credentials are:

Username: admin Password: Ationa

1. The System Information page will be displayed.
2. Click Upgrade in the menu bar to display the Upgrade page.
3. Click the Choose File button.

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Appendix

Performing a Link Test

Follow the procedure below to perform a link integrity test between an encoder and decoder(s).

1. Launch a web browser and enter the IP address of the encoder in the address bar.
2. Open another tab in the browser and enter the IP address of the subscribing decoder in the address bar.
3. Verify that all desired decoders are subscribed to the encoder's multicast address and port number. In the decoder example below, the IP Input > Input 1 > Multicast address field is set to 225.0.0.11. This is the same IP address that is assigned to the Session > Session 1 > Destination IP address field on the encoder.

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Appendix

1. An orange screen with a progress bar will be displayed during the testing procedure.

1. After the test, the encoder web page will automatically redirect to the Notifications tab where the user can see the results.

If the test passed, information similar to the following will be displayed. Note the information in the Description field: "100% of packets received by ..." indicates no packets were dropped / zero loss.

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Appendix

If the test fails, it could be that less than 100% of packets are received, indicating connectivity, but with some amount of packet loss. If it shows "No one replied!" or if the target decoder is not shown in results, it could indicate that there is a connectivity issue or that the decoder is not subscribed to the correct video multicast address.

Hovering the mouse over the Description field will provide the full IP address of each decoder which received the test, as shown below. If multiple decoders were tested, additional IP addresses will be displayed.

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Appendix

Mounting Instructions

OmniStream decoders includes two mounting brackets and four mounting screws, which can be used to attach the unit to any flat surface.

1. Using a small Phillips screwdriver, remove the two screws from the left side of the enclosure.

3D rendering of a black electronic device with ports and connectors (no visible text or symbols)

1. Position one of the rack ears, as shown below, aligning the holes on the side of the enclosure with one set of holes on the rack ear.
2. Use the enclosure screws to secure the rack ear to the enclosure.

Included screws

1. Mount the unit using the oval-shaped holes, on each rack ear. If using a drywall surface, a #6 drywall screw is recommended.

3D rendering of a black electronic device with labeled ports and mounting holes (no readable text or symbols)

NOTE: Rack ears can also be inverted to mount the unit under a table or other flat surface.

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Appendix

Rack Tray for OmniStream

OmniStream decoders can also be mounted in the OmniStream rack tray (AT-OMNI-1XX-RACK-1RU). The rack tray is sold separately and provides easy mounting and organization of up to two OmniStream encoders/decoders in a convenient 1U rack tray. The OmniStream rack tray can be purchased directly from Atlona.

1. Position the OmniStream products, as shown in the illustration below.
2. Using the included screws, secure each unit to the rack with a Philips screwdriver.

NOTE: OmniStream units can be mounted forward-facing or back-facing, depending upon your requirements.

1. Install the entire assembly into an empty 1U slot in the rack.

3D rendering of a black mechanical component with mounting holes and internal slots (no text or symbols visible)

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Appendix

Specifications

Video
Signal HDMI
Copy Protection HDCP 2.2
UHD/HD/SD 4096×2160 (DCI) @ 30/24 Hz	1920 × 1080^(7) @ 25/29.97/30 Hz
	3840 × 2160^(1) (UHD) @ 60/50/24/25/30 Hz	1280 × 720p @ 30/50/59.94/60 Hz
	1920 × 1080p @ 23.98/24/25/29.97/30/50 /59.94/60 Hz
VESA ^(3)	2560×1600	1366×768
	1920×1200	1360×768
	1680×1050	1280×1024
	1600×1200	1280×800
	1600×900	1280×768
	1440×900	1152×768
	1400×1050	1024×768
Color Space YUV, RGB

Encoding
Density Single decoding engine
Compression Format VCx and VC-2 (SMPTE-2042)
Video Quality Optimization User-selectable: PC Application or Video mode (VC-2 codec only)
Chroma Subsampling Chroma	VCx VC-2 Video
	4:4:4	Yes	No
	4:2:2	Yes	No
	4:2:0	Yes	Yes
Color Depth	8-bit, 10-bit, 12-bit
HDR	HDR10, HLG, Dolby® VisionTM

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Appendix

Protocols

Video Streaming RTP
Audio Streaming RTP, up to 7.1 channels
		AES67, up to LPCM 7.1 channels
Addressing DHCP, static
Encryption AES-128
QoS Tagging RFC 2475
Discovery Multicast DNS, LLDF, SAP
Management HTTPS, SSH, Telnet, and WebSockets with TLS
IP Multicast IGMPv2 and IGMPv3 support

Graphics Features

Text Insertion	Adjustable height/width, scrolling (speed, direction, or static), iterations (up to infinite), positioning, and adjustable color and alpha (transparency) channels.
Slate / Logo Insertion ^10	PNG file format, adjustable aspect ratio (keep or stretch), horizontal/vertical size, screen position; slate mode can be set to off, manual (image always displayed, superimposed on the source signal, and will remain if source signal is lost), auto (image will only be displayed when source signal is lost).

Control

CEC Supported and triggered from control systems and OmniStream encoders
RS-232	Device control and configuration; supports baud rates from 2400 to 9600Bidirectional pass-through from control system to networkBidirectional TCP Proxy (RS-232 commands over IP)
IR Pass-through from control system to network	Pass-through from network to control system

Connectors

HDMI 1 - Type A, 19-pin, female, locking

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Appendix

Chassis Inches Millimeters
Dimensions (H x W x D)	1.34 x 8.19 x 4.41	34 x 208 x 112
Weight Pounds Kilograms
Unit 1.5 0.7
Certification
Device CE, FCC, CB, RoHS
Compliance
NDAA-899 Yes
TAA Yes
Warranty
Device To view the product warranty, use the following link:https://atlona.com/warranty

Footnotes

(1) Using VCx, streaming is supported up to 4K60 4:4:4. Using VC-2 Video Mode, 4K60 and 4K50 resolutions will be chroma subsampled to 4:2:0 before streaming.
(2) Interlaced sources are passed-through without modification, and do not support scaling, video wall, logo insertion, text insertion, or fast switching.
(3) All VESA resolutions are 60 Hz.
(4) Slate insertion is limited to 1080p only.
(5) Maximum distance per hop is 330 feet (100 meters), depending upon network configuration.

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