Studio Technologies Model 543D IFB Interface

Studio Technologies Model 543D IFB Interface

The Model 543D IFB Interface provides broadcast-standard powered and line-level (non-powered) analog audio IFB outputs from audio signals that are supplied by way of Dante^® audio-over-Ethernet media networking technology. IFB, also known as "interruptible foldback" or talent cueing, is a method commonly used by broadcast on-air talent and related personnel to receive one-way (listen-only) audio signals associated with live-event broadcasts. Especially important in sports and entertainment events, IFB plays a crucial role in virtually all broadcast applications that require people to stay "in the know." Dante has found wide acceptance as an audio "backbone" due to its ease of use, high performance, strong interoperability, and wide adoption by a large number of equipment manufacturers. The Model 543D is a unique product that helps to extend Dante’s capabilities into the important but specialized world of broadcast and production IFB.

Dante audio-over-Ethernet technology is used to transport four audio channels from their source to the Model 543D and then on to the two, 2-channel IFB outputs. Each of the Model 543D's powered IFB outputs supplies DC voltage and two audio channels to groups of listen-only user devices. Two analog line-level IFB outputs are also provided for general-purpose use. The Model 543D is compatible with the latest broadcast and audio equipment that uses Dante technology. An Ethernet connection is all that's required to make the Model 543D part of a sophisticated, networked audio system.

A Model 543D can utilize up to four digital audio input channels provided by Dante-enabled devices such as matrix intercom systems, DSP processors, broadcast routers, and audio consoles. The unit's powered IFB outputs allow direct connection with listen-only user beltpacks such as the Studio Technologies' Model 32A, Model 33A, or Model 34. The powered IFB outputs also support connection of listen-only devices from manufacturers such as RTS^® and Clear-Com^®. Two LED indicators serve as status displays for the 28 volts DC that is provided as part of each powered IFB output. The two line-level IFB outputs are provided for connection with a variety of devices that have balanced or unbalanced analog inputs.

Four audio level meters provide confirmation of system performance during setup and operation. Careful attention to circuit design and component selection ensures that excellent audio quality is maintained. The Model 543D's operating power can be provided either by a power-over-Ethernet (PoE) connection or an external source of 12 volts DC. Two LEDs display the status of the PoE and/or DC sources. Standard connectors are used for the powered and line-level IFB outputs, Ethernet, and DC power interconnections. The Model 543D's enclosure has a "1/2-rack" 1U form factor and weighs less than two pounds, making it well suited for use in portable applications. Alternately, using one of the optional rack-mount front panels, one or two Model 543D units can be mounted in a single space (1U) of a standard 19-inch rack enclosure.

The STcontroller software application is used to configure the nominal level of the Model 543D's line-level IFB outputs. Versions of STcontroller are available that are compatible with the Windows^® and macOS^® operating systems. They are available, free of charge, from the Studio Technologies' website.

Dante Audio-over-Ethernet

Digital audio data is sent to the Model 543D using the Dante audio-over-Ethernet media networking technology. Audio signals with a sample rate of 48 kHz and a bit depth of 16, 24, or 32 are supported. Using the Dante Controller application, up to four Dante transmitter (output) channels on associated equipment can be assigned to the unit's Dante receiver (input) channels. This makes it simple to select the way in which a Model 543D fits into a specific application.

For further information, please refer to the attached Datasheet.