Studio Technologies takes analogue to Dante
Studio Technologies’ Model 44D is an audio interface that helps to expand Dante's capabilities to facilities and equipment that primarily support signals in the analogue domain. The general-purpose tool can interface 2-channels of analogue line-level audio to and from applications that utilise Dante audio-over-Ethernet media networking technology. Two Model 44D units can also provide one-to-one signal paths, two in each direction, over a standard local area network. It also supports transport of contact closures or status signals between Model 44Ds and other compatible products. Each unit provides two GPIs and two GPOs. In-band audio signals (20kHz tones) are used to transport the signals through the Dante paths.
Two line-level audio inputs use standard 3-pin female XLR connectors for interfacing with balanced and unbalanced sources. The input audio signals are converted to 24-bit digital and then transported via the Dante interface. Two digital audio signals arrive via the Model 44D’s Dante interface and are then converted to analogue. Two 3-pin male XLR connectors on the unit’s back panel provide balanced line-level outputs. A 9-pin D-subminiature connector, also located on the back panel, is used to interface with the GPI and GPO signals. The front panel features four 5-segment LED meters to display the level of the audio signals associated with the two line inputs and two line outputs.
For compatibility with SMPTE and EBU applications, a configuration choice allows the nominal level of the input signals to be +4 or 0dBu. The two analogue line-level output channels can also be set to +4 or 0dBu. Both inputs and outputs are electronically balanced, capacitor coupled and ESD (static) protected. The unit can be powered using Power-over-Ethernet or an external source of 12V DC. It connects to a data network using a 100 Mb/s twisted-pair Ethernet interface using a Neutrik EtherCon RJ-45 connector.
Joining the Model 44D in offering an analogue to Dante interface is the Model 5414 mic/line input and line output interface. The Model 5414 allows four microphone or line-level sources to be connected to the unit for conversion to digital and then output via Dante. Gain, high-pass filtering and P48 phantom power can be selected. Four signals arriving by way of Dante can be converted to analogue and then output as balanced line-level signals. A monitor section allows the input and output signals to be selectively observed using meters and a headphone output.
The Model 5414 can serve as an edge device for a Dante network implementation or as a general-purpose tool to help expand Dante capabilities to facilities and applications that were initially implemented to support signals in the analogue domain. The rack-mounted unit features standard connectors for all inputs and outputs, along with direct AC mains power.