IFBs
The mix-minus output generated by a sound desk can be presented to the intercom system to allow studio crew, such as the Director, to talk over or completely interrupt the mix-minus being sent to the presenters.
Four “dim” levels are provided so that devices, or groups of devices, can apply varying levels of mix-minus level reduction before the IFB is sent to the presenter. Dim-level-1 is the highest priority and dim-level-4 is the lowest. For example, the Director will want a complete cut of mix-minus when they talk, but the Producer may only need 6dB dim in level, so they don’t completely cut out the mix-minus when talking to the presenter.
If a Telos Livewire+™ AES67 sound desk is being used on the network, then its mix-minus output will appear as an input on the Livewire+™ AES67 window. This can be routed directly to the input of the IFB. If the feed is an analog input, then it can be presented on a Panel Aux input or from one of the Telos Alliance xNode inputs.
IFB Setup
The following Figures show how to configure an IFB. Each device wishing to communicate on the IFB must be added to IFB1. This is achieved using the drag and drop functionality in Dashboard.
Select “IFB” on the bottom right corner, click on “Add”, a pop-up window will appear, enter the text “IFB1” into the Name field.
The pop-up window allows four dim levels to be set. In this example, Dim-level-1 will be cut completely as it is used for the director, and Dim-level-2 is reduced by 6dB as it will be used for the director.
Click “CREATE” on the pop-up window, this will close, and the Icon “IFB1” will appear in the IFB window.
Drag Director Device to Level-1 and the Producer device to Level-2.
Under the devices window, click on the Producer icon to list the keys of the Producer Panel below.
Drag the IFB-1 icon from the IFB window to key-3 of the Producer key.
Drag the IFB-1 icon from the IFB window to key-3 of the Director key.
Drag the IFB-1 icon from the IFB window to key-3 of the Director key.
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