Studio Technologies Model 5365 - Dante to IFB / Intercom Headset Interface

The Model 5365 provides a 5-pin female XLR connector that interfaces with an intercom or broadcast-style headset. Some applications may connect the Model 5365's headset connector to a separate headset interface assembly. The headset will incorporate both a microphone and headphones. The latter will provide either a dual-ear or single-ear headphone with dual-channel (stereo) or single-channel (monaural) audio performance. The headset connector is located on the front panel for easy access by the user. Refer to Figure 4 for headset connection details. The microphone input connections are compatible with most unbalanced or electret (low-voltage DC- powered) microphones. A balanced dynamic microphone should, in most cases, also function correctly if the signal – (low) is connected to Model 5365's mic in –/shield connection. No support is provided for microphones that require P12 or P48 phantom power.

Audio Routing
The two Dante receiver (input) channels associated with the Model 5365 need to be routed (connected) to Dante transmitter (output) channels on associated equipment. Configuration settings allow these two audio sources to ultimately be sent to the Model 5365's 2-channel headphone output. The Model 5365's two Dante transmitter (output) channels must be assigned to Dante receiver (input) channels on associated equipment. This achieves routing the Model 5365's two talk output audio channels to the device (or devices) that will be "listening" to them. Within Dante Controller a "subscription" is the term used for routing a transmitter channel or flow (a group of up to four output channels) to a receiver channel or f low (a group of up to four input channels). The number of transmitter flows associated with an UltimoX2 integrated circuit is limited to two. These can either be unicast, multicast, or a combination of the two. If the Model 5365's transmitter (output) channels need to be routed using more than two flows it's possible that an intermediary device, such as the Studio Technologies' Model 5421 or Model 5422A Dante Intercom Audio Engine, can be used to "repeat" the signals.

Ethernet Connection with PoE
A 100BASE-TX Ethernet connection that supports Power-over-Ethernet (PoE) is required for Model 5365 operation. This one connection will provide both the Ethernet data interface and power for the Model 5365's circuitry. A 10BASE-T connection is not sufficient and a 1000BASE-T (GigE) connection is not supported unless it can automatically "fall back" to 100BASE-TX operation. The Model 5365 supports Ethernet switch power management, enumerating itself as a PoE class 1 device. Any source that is compliant with the IEEE® 802.3af standard will function correctly. Should the selected Ethernet switch port support Energy-Efficient Ethernet (EEE) it must be disabled to help ensure reliable Dante operation. The Ethernet connection is made by way of an RJ45 jack that is located on the Model 5365's back panel. This allows connection by way of a RJ45 plug that's part of a typical Ethernet "patch cable." A crossover cable will never be required as the Model 5365's Ethernet interface supports auto MDI/MDI-X. The maximum cable distance is 100-meters (325-feet) for twisted-pair Ethernet cabling.

Stereo Line Input
A 3-conductor 3.5 mm jack is located on the Model 5365's back panel and provides access to the unit's stereo (2-channel) analog line-level audio input. This allows direct interfacing with a source of unbalanced stereo analog audio, typically provided by a personal computer's line output. The nominal input level is –10 dBu. The interconnecting cable's 3-conductor 3.5mm plug should be wired such that left channel audio is on the tip lead, right channel audio is on the ring lead, and audio shield/common is on the sleeve lead. Refer to Figure 2 for connection details. Configuration choices in the STcontroller application allow the sensitivity of the two input circuits to be individually adjusted. This allows compatibility with signal sources that have a nominal level that is significantly lower than the unit's nominal –10 dBu.