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Biamp Systems

Configuring Revolabs Executive Elite for AVB

Revolabs Executive Elite wireless microphone systems can support audio output over AVB to a connected Biamp Tesira system. This article describes how to configure a Tesira system with Riedel AVB Manager for use in conjunction with Revolabs Executive Elite systems.

Introduction

Revolabs Executive Elite wireless microphone system can make use of AVB audio connections in two ways:

  • Signals from Executive Elite microphones can be received by Tesira via AVB.
  • Signals from Tesira can be received by Executive Elite system via AVB and routed internally to an ear piece connected to the 2.5mm jack on the wearable microphones, the XLR adapter, or the TA4 adapter.

Before configuring the AVB streams, connect the AVB ports of an Executive Elite central unit and of a Tesira device to an AVB switch and install Riedel AVB Manager software on your computer.

Configuring Tesira to receive AVB from Executive Elite

Microphone signals from Executive Elite system can be sent to Tesira via AVB.

Configure a TesiraFORTE, SERVER-IO or SERVER with a one-channel 'AVB.1 Input' block for each input channel from the Executive Elite system. Each Executive Elite central unit can use 4 or 8 channels, depending on the model.

To allow AVB audio to flow from Executive Elite microphones to Tesira, the two systems will need to be synchronized. As Tesira does not have a separate Media Clock input (like Executive Elite does), one of the Tesira listener channels that is listening to audio from an Executive Elite microphone needs to be configured as the Media Clock input. This can be done using the Riedel AVB Manager software.  Depending on your network layout, you may need to plug your computer into the AVB network in order to use the Riedel AVB Manager software.

In the Riedel AVB Manager, in the 'Entity Properties' section select the Tesira device.

In the center section of the Riedel AVB Manager showing the Tesira properties, scroll down to find the 'Clock_Domain.1' property for the Tesira and select it.

The right side will now show the possible values for that property – select an input stream to which audio will be sent from the Executive Elite, typically this is 'StreamClock0'.

The Tesira is now configured to accept the AVB Media Clock from the Executive Elite.

Connect the Executive Elite talker channels to the Tesira listener channels by enabling the respective crosspoints in the 'Connection Management' section of the Riedel  AVB Manager.

Do not use the Media Clock channel as a talker to the Tesira – the Media Clock channel output is solely used for synchronization between the Executive Elite.

Once all of the audio channels have been configured in the Riedel AVB Manager, reboot the Executive Elite central unit and the Tesira device to ensure that the configuration has taken hold and all clocks are synchronized. Verify there are active Streams and AVB audio is flowing in the Tesira software.

Single 1722 AVB example.jpg

Configuring Tesira to send AVB to Executive Elite

The Executive Elite is also capable of receiving back channel audio over AVB from Tesira and routing it internally it to:

  • an ear piece connected to the 2.5mm jack on the wearable microphones
  • the XLR adapter
  • the TA4 adapter

Please note that the Executive Elite table top microphones do NOT offer back channel audio.

Back channel audio can be configured as analog inputs on the Executive Elite central unit or as AVB streams. If AVB streams are preferred, AVB back channel should be enabled manually in the Executive Elite central unit. This can be done in the Executive Elite web interface:

Also set the Executive Elite central unit Clock Source to AVB.

In Tesira, create a one-channel 'AVB.1 Output' block for each desired back-channel to Executive Elite.  A multi-channel AVB.1 Output block cannot be used in this case, they must all be single-channel output blocks.

For Cornerston AVB-Revo Back-channel audio.JPG

Back channel audio also requires a media clock synchronization between the Talker (Tesira) and the Listener (Executive Elite). In the previous case, for audio from Executive Elite to Tesira, the synchronization was done using the Clock_Domain.1 setting in Riedel AVB Manager. In the current case, for audio from Tesira to Executive Elite, the synchronization can simply be established by connecting a Tesira talker stream (in Riedel AVB Manager):

  • to the Media Clock listener of the Executive Elite central unit if there is only one
  • or to the Media Clock listener of the Executive Elite central unit that was selected as the Clock Source for several synchronized Executive Elite central units

This is done this way in the second case, as the Executive Elite listener has a separate Media Clock input, and Tesira listener (in the first case) does not.

There is no need to create a separate talker stream ('AVB.1 Output') in Tesira for synchronization. You can use a Tesira stream that provides actual audio to one of the Executive Elite back channels.

On the picture you can see that the first Tesira talker stream is connected both to Media Clock stream and the first Audio Input stream of Executive Elite (QA Lab Box 4)).

Connect the Tesira talker channels to Executive Elite listener channels by enabling the respective crosspoints.

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