ST 2110 Audio Transmitter

Overview

The NMOS implementation for Q-SYS enhances the system's capabilities by integrating NMOS standards for media transport and session management. This integration ensures seamless communication and synchronization between Q-SYS components and NMOS-enabled devices.

IS-04 Discovery and Registration: Allows control and monitoring applications to find the resources on a network, specifically the Node API.

IS-05 Device Connection Management Specification: Provides a transport-independent way of connecting Media Nodes, specifically the Connection API.

BCP-002-02 Asset Distinguishing Information: Provides unique asset tags for each device, including manufacturer, product name, instance identifier, and function.

To use the NMOS terminology, an NMOS-enabled Core is a Node containing one Device that in turn contains zero or more Senders and/or Receivers. An NMOS Sender is implemented as an ST 2110 Transmitter; an NMOS Receiver is implemented as an ST-2110 Receiver.

Our NMOS implementation has been tested using the AMWA NMOS Test tool and EVS’s Cerebrum as a registry service.

NMOS Server

Each Core hosts an HTTP server providing the NMOS REST APIs mentioned above, at:

http://<core IP>:8085/x-nmos

We’ll refer to this server as the “NMOS Server.”

The NMOS server will run automatically if a Design is being deployed which includes at least one ST 2110 audio component (Transmitter or Receiver) that has its Connection Mode property set to “NMOS” (as opposed to “Manual”).

NMOS Server Configuration Support Page

Tip: Support pages are protected by bearer-auth tokens if access controls are enabled. Therefore, you may need to log in as an admin level user before you can access the support pages.

The NMOS Server Configuration support page is available at:

http://core IP/support/nmos

This page allows the NMOS Node registration method to be configured.

• Unicast DNS-SD (default registration). To ensure successful DNS-SD registration, visit the NMOS Implementation Guide for DNS-SD.
• mDNS-SD
• Manual

If unicast DNS-SD is selected, the domain (e.g., mycompany.com) in which the registry service resides may be specified. If nothing is specified, the Core’s default domain will be used. If that default domain isn’t the same as the registry service’s domain, the Core (Node) will be unlikely to find the registry.

If mDNS-SD or a Manual configuration method is required, then visit the support page.

Input Pins

Channel 1 - n

Audio signal pins are represented by a () circle, and traditional wiring is represented by a thin black line.

By default, the ST-2110 Transmitter is set to 8 audio input channels. You can choose between 1 through 8.

Output Pins

This component does not have any output pins.

Tip: For additional properties not listed, refer to the Properties Panel help topic for more information.

Connection Mode

Manual: Manually configure the network settings for the ST 2110 Audio Transmitter.

NMOS: The transmitter will use the Networked Media Open Specifications (NMOS) protocol for automatic discovery and connection management.

Channel Count

The number of input channels: 1 through 8 (default).

Flow (Tab)

Peak Output Level (dBFS)

Measures the transmitted audio peak output level, from -120 dB to 20 dB.

Digital

Invert

Inverts the polarity of the audio signal.

Mute

Mutes the digital audio signal.

Gain

Controls the gain of the digital audio signal, from -100 dB to 20.0 dB (default is 0).

Status

Component status is conveyed with the Status LED and Status box, which uses both color and text to indicate the current condition:

• OK: The device is functioning normally.
• Initializing: The device is in the process of a firmware, patch, or configuration update, or the design is starting.
• Compromised: The device is functioning, but a non-fatal problem exists. Refer to the Status box for details.
• Missing: The device cannot be discovered.
• Fault: The device is malfunctioning or is not properly configured. Refer to the Status box for details.
• Unknown: This status appears during a Core reboot (for example, during a firmware update), or when a design is being uploaded to the Core and before it has started running.
• Not Present: If applicable to the device, this status appears when the device is not connected to the network and its Is Required component property is set to 'No'. This status also appears if the device component's Dynamically Paired property is set to 'Yes', pairing has not been assigned in Core Manager, and the device component's Is Required property is set to 'Yes'. See Dynamic Pairing.

Connection

Global Enable

Activates or deactivates the Primary and Secondary Leg of the Tx.

Flow Label

Shows a specific label to the media flow for identification purposes.

Media Clock Offset

Adjusts the timing offset of the media clock to synchronize audio streams.

Additional Network Tx Latency

Sets extra latency to account for network delays in receiving media packets. Options include None, 1, 2, or 5 extra milliseconds.

Packet Time

(Read-only field): Defines the duration of each media packet in milliseconds.

Media Type

Defines the encoding name of the audio stream. Options are L16 or L24.

Payload Type

Specifies the RTP payload type for the media stream.

Primary Leg / Secondary Leg

Note: Secondary Leg only appears when the Is Redundant Property is set to Yes.

RTP Enable

Activates or deactivates the Primary/Secondary Leg of the Tx.

Primary OK / Secondary OK (LED)

This LED indicator shows the status of the Primary/Secondary network connection.

Destination IP 

Sets the IP address to which the media stream is sent.

Destination Port

Specifies the port number to which the media stream is sent.

Source Port

Indicates the port from which the media stream is sent.

Source IP

(Read-only field): Indicates the IP address from which the media stream is sent.

Interface

(Read-only field): Indicates the network interface used for sending the media stream.

Details (Tab)

Note: Secondary Leg only appears when the Is Redundant Property is set to Yes.

Details

The Details section displays cumulative information for audio being sent from the source.

Reset Details

The information in the Details section resets during a design restart on the Q-SYS Core or whenever you click Reset Details.

Raw SDP

(Read-only field): Displays the SDP associated with the stream being transmitted.

Pin Name	Value	String	Position	Pins Available
Channel n
Clip	0 1	false true	0 1	Output
Clip Hold	0 1	false true	0 1	Input / Output
Gain	-100 to 20	-100 dB to 20 dB	0.000 to 1.00	Input / Output
Invert	0 1	normal inverted	0 1	Input / Output
Level	-120 to 20	-120 dB to 20 dB	0.000 to 1.00	Output
Mute	0 1	unmuted muted	0 1	Input / Output
Connection
Additional Network Tx Latency	None Extra 1 ms Extra 2 ms Extra 5 ms			Input / Output
Flow Label	(text)			Input / Output
Global Enable	0 1	disabled enabled	0 1	Input / Output
Media Clock Offset	0 to nnn	0 to nnn	0 to 1.00	Input / Output
Media Type	L16 L24	L16 L24	N/A	Input / Output
Packet Time	(text)			Output
Payload Type	96 to 127	96 to 127	0.00 to 1.00	Input / Output
Details
Primary / Secondary Leg
Details	(text)			Output
Reset Details	0 1	false true	0 1	Input / Output
Raw SDP	(text)			Output
Primary Leg
Destination IP	nnn.nnn.nnn.nnn			Input / Output
Destination Port	1 to 65535	1 to 65535	0.00 to 1.00	Input / Output
Interface	LAN A (Blue) - Primary Leg LAN B (Red) - Secondary Leg			Output
Primary OK	0 1	false true	0 1	Output
RTP Enable	0 1	disabled enabled	0 1	Input / Output
Source IP	nnn.nnn.nnn.nnn			Output
Source Port	1 to 65535	1 to 65535	0.00 to 1.00	Input / Output
Status	0 1 2 3 4 5	OK (Green) Compromised (Orange) Fault (Red) Not Present (Gray) Missing (Red) Initializing (Blue)	-	Output