AES67 Transmitter

The AES67 Transmitter component provides the means for sending valid AES67 audio streams.

Q-SYS implements the AES67 mandated "Compatibility Mode" which is:

In the component Properties, you can set the Connection Mode to configure how devices are discovered and managed:

  • Auto mode – This mode ensures that the AES67 receiver/transmitter is configured to use SAP (Session Announcement Protocol) for Discovery and Connection Management. This enables automatic discovery and connection to any SAP enabled AES67 stream, including those transmitted by a Dante based device.
  • Manual mode – Allows manual configuration of stream TX/RX parameters for integration with devices not using SAP.
  • RTSP mode – In this mode, you copy the stream URI from the connection parameters in the component control panel and use this URI in your AES67 receiver settings.

Refer to the Controls, and Properties tables for information about items used in this procedure. This procedure is focused on the AES67 Transmitter, so it is assumed that you have the appropriate elements in your design to use the transmitter.

  1. From the Inventory add list, select Streaming I/O > AES67 Transmitter. The transmitter is added to your Inventory.
  2. Drag and drop the AES67 TX Status/Control component into the schematic.
  3. Double click the component to display the components control panel.
  4. In the Properties, Give the transmitter a new Name if desired. The default is AES67-TX-n.
  5. Select or create a new Location for the transmitter.
  6. Set the Connection Mode to Auto.
    Auto mode configures this AES67 Transmitter to use the SAP protocol for Discovery and Connection Management. This enables automatic discovery and connection by any SAP enabled AES67 receiver, including Dante based devices.
  7. Set the Channel Count to the number of streams (1 to 10) you will be transmitting.

Note: The number of signal pins is variable and set in the component's Channel CountProperty.

Input Pins

Input 1 - n

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

By default, the AES67 Transmitter component is set to 8 inputs. You can choose between 1 and 10.

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.

AES67 Transmitter Properties

Connection Mode

For more information, see Connection Modes.

  • Auto mode uses SAP to ease integration with any other AES67 device using SAP.
  • Manual allows you to manually configure additional receiver connection settings.
  • RTSP mode allows you to obtain the stream URI for use in your AES67 receiver settings.

Channel Count

Number of channels for the Transmitter. This count must match that of the Receiver.

Stream

Peak Output Level (dBFS)

Meters for each channel indicating the peak output level, from -120 to 20.

Clip LED

Indicates the associated channel output is clipping.

Clip Hold

When engaged, the Clip LED remains on until reset by disengaging this button.

Invert

Toggle button to invert the digital output of the AES67 Transmitter.

Mute

Mutes the output signal.

Gain (dB)

Controls the Gain of the digital output signal, from -100 to 20 (default = 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 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 Modes

Multicast Address

The AES67 Transmitter and Receiver must have the same Multicast Address. By default, the address is automatically assigned from the range configured on the Q-SYS Core Manager > Network > Multicast page. Once an address is auto-assigned, that address is retained unless manually changed. If you clear the Multicast Address field, the system auto-assigns a new address.

Note: If you specify your own address, it must be a valid Class D Multicast address between 224.0.0.0 and 239.255.255.255 and not conflict with those registered with the IANA, any Q-SYS Network > Services, or multicast address ranges for Video > Cameras and Video > Video Endpoints.

Note: Transmitting AES67 audio to any Dante-based device requires address assignment within the 239.69.xxx.xxx range.

To learn more about multicast addressing in Q-SYS, see Multicast Traffic.

Enable

Enable / Disable the Receiver.

Stream Name

User-defined name for the transmitted stream.

Network Rx Buffer

Adds extra buffer time to the default maximum of 1 ms.

Additional Network Receive Buffer time is useful in (rare) cases where the network latency through the network exceeds the default maximum. Additional network latency my be introduced by sub-optimal QoS functionality, some layer-3 routing implementations, long distances or large networks. You can select from:

  • Default

  • Extra 1 ms

  • Extra 2 ms

  • Extra 5 ms

Interface

Sets the LAN on which the transmitter is to communicate with the receiver. The Auto selection will choose for you, but you can also select LAN A or LAN B.

Note: Manual Connection Mode is for advanced use only. Do not use unless required by the design architecture.

Enable

Enable / Disable the Transmitter stream.

Stream Name

User-defined name for the transmitted stream.

Multicast Address

The AES67 Tx component must have the same Multicast Address assigned as the receive device you wish to send to.

Remote RTP Port

The Remote Real-Time Transport Protocol is used to send audio to an AES67 receiver. The transmitter must have the same RTP Port as the reciever. Must be different than the RTCP port number. The range is 1 to 65535 (default is 5004).

Remote RTCP Port

The Real-time Transport Control Protocol is used to send control information to an AES67 receiver. The transmitter must have the same RTCP Port as the receiver. Must be different than the RTP port number. The range is 1 to 65535 (default is 5005).

Packet Time

This sets the AES67 compatibility. 48 is the base level compatibility (conformance level A) for AES67 devices. This translates to 48kHz streams, 1-8 channels per stream at 1 mS latency.

You can select 16 or 48 (default is 48).

Note: 16 setting is equivalent of .33 mS with up to 30 channels per stream. This should only be used if the receive equipment specifies this setting as needed.

Stream Channels

The number of channels being used as set in this field. This is initially set in the Properties but can be changed here. This number cannot exceed the number of channels set in the component's Properties.

Payload Type

This range of Payload Types (96 to 127, default is 96) is for video and combined encodings. Must be the same as the device the stream will interface with. 96 is the setting most commonly used across devices.

Media Clock Offset

This sets the RTP clock offset from the synchronized local clock which is in turn precisely synchronized to a common wall clock via PTP. While some devices may call for a different setting (default is 0), this is typically 0 for ST2110 and AES67 devices.

Network Tx Buffer

Adds extra buffer time to the default maximum of 1 ms.

Additional Network Transmit Buffer time is useful in (rare) cases where the network latency through the network exceeds the default maximum. Additional network latency my be introduced by sub-optimal QoS functionality, some layer-3 routing implementations, long distances or large networks. You can choose from:

  • Default

  • Extra 1 ms

  • Extra 2 ms

  • Extra 5 ms

Interface

Sets the LAN on which the transmitter is to communicate with the receiver. The Auto selection will choose for you, but you can also select LAN A or LAN B.

URI

Specify the URI address of the transmitting AES67 stream to be received

Enable

Enable / Disable the Transmitter.

Network Tx Buffer

Adds extra buffer time to the default maximum of 1 ms.

Additional Network Transmit Buffer time is useful in (rare) cases where the network latency through the network exceeds the default maximum. Additional network latency my be introduced by sub-optimal QoS functionality, some layer-3 routing implementations, long distances or large networks. You can choose from:

  • Default

  • Extra 1 ms

  • Extra 2 ms

  • Extra 5 ms

Interface

Sets the LAN on which the transmitter is to communicate with the receiver. The Auto selection will choose for you, but you can also select LAN A or LAN B.

Details

Details

Text indicating the Details of the Transmitter stream. The information in this field is updated regularly and is cumulative. The following "Count" information is displayed as running totals:

  • Enabled: 1
  • Connected: 1
  • Packet Count: 1875
  • Timestamp: 418637872

Reset Details

This button resets the networking details to zero, at which point the details start accumulating information again.

The available Control Pins depend on settings in Properties.

Pin Name

Value

String

Position

Pins Available

Channel 1 – n

Clip

0

1

false

true

0

1

Output

Clip Hold

0

1

off

on

0

1

Input / Output

Gain

-100 to 20

-100 dB to 20 dB

0.000 to 1.00

Input / Output

Invert

0

1

normal

invert

0

1

Input / Output

Level (Peak Input)

-120 to 20

-120 dB to 20 dB

0.000 to 1.00

Output

Mute

0

1

unmute

mute

0

1

Input / Output

Details

Reset Stream Details

Trigger

 Input / Output

Stream Details

Text Display

Output

Connection

Enable

0

1

disabled

enabled

0

1

Input / Output

Interface

Text Display

Auto

LAN A

LAN B

LAN nnn

Input / Output

Media Clock Offset

0 to nnn

0
nnn

0
1.00

Input / Output

Multicast Address

Text
nnn.nnn.nnn.nnn

Input / Output

Multicast Address

Text
nnn.nnn.nnn.nnn

Network RX Buffer

Text Display:

Default

Extra 1 ms

Extra 2 ms

Extra 5 ms

Input / Output

Stream Name

Text Edit

 Input / Output

Packet Time

16
48

16
48

N / A

Input / Output

Payload Type

96 to 127

96 to 127

0.00 to 1.00

Input / Output

Remote RTCP Port

1 to 65535

1 to 65535

0.00 to 1.00

Input / Output

Remote RTP Port

1 to 65535

1 to 65535

0.00 to 1.00

Input / Output

Stream Channels

1 to 10

1 to 10

1 = 0

2 = 0.111

3 = 0.222

4 = 0.333

5 = 0.444

6 = 0.556

7 = 0.667

8 = 0.778

9 = 0.889

10 = 1.00

Input / Output

Status

Status

0

1

2

3

4

OK (green)

Compromised (orange)

Fault (red)

Unknown (red)

Updating (blue)

0

0.250

0.500

0.750

1.00

Output