Studio Technologies just announced the Model 545DC and Model 545DR Intercom Interfaces. The units allow users to utilize analog party-line (PL) intercom circuits with contemporary Dante Audio-over-Ethernet (AoE) applications.

The Model 545DC supports two single-channel PL intercom circuits and is directly compatible with single-channel analog party-line (PL) products from Clear-Com. The Model 545DR offers one two-channel interface and works directly with the RTS TW-series of two-channel analog intercom circuits. Both can interconnect with Dante-supported devices such as matrix intercom systems, digital audio processors, and audio consoles. The interfaces are also compatible with Studio Technologies’ line of Dante-enabled user beltpack, intercom station and intercom audio engine products.

The Model 545DC is designed for use with single-channel analog party-line (PL) intercom circuits that are commonly used in corporate, industrial, theater, entertainment and education applications. These PL circuits utilize one three-conductor cable to provide power and one channel of intercom audio. The audio path also includes a DC-based call function that the Model 545DC directly supports. The Model 545DR is intended for use in applications, typically broadcast, that provide two channels of analog PL on a single three-conductor cable. High-frequency call signals are combined with voice audio and are supported by the Model 545DR. Each interface is capable of providing DC power, allowing direct connection to a limited number of analog PL user devices.

Both the Model 545DC and Model 545DR can be powered by a Power-over-Ethernet (PoE) connection or an external source of 12 volts DC. An etherCON RJ45 jack is used to interface the units with a 100 MB/sec Ethernet signal. Standard three-conductor XLR connectors allow the analog party-line (PL) intercom circuits to be directly interconnected. For assistance during installation and troubleshooting, both the Model 545DC and Model 545DR contain two sets of five-segment LED level meters. Each set of two meters displays the level of signals being sent to and received from their associated party-line interface channel. Each unit has two analog hybrid functions that separate the PL intercom circuits’ send and receive audio channels. The software-controlled hybrid circuits provide high return loss and excellent audio quality.

Both units are housed in durable, lightweight aluminum half-rack enclosures and are intended for desk or tabletop use. Optional mounting kits allow for one or two units to be installed in one space (1U) of a standard 19-inch rack enclosure. A PoE Ethernet connection is all that’s required to make the Model 545DC and Model 545DR part of a sophisticated, networked audio system.

The Model 545DC and Model 545DR operating parameters are configured using the STcontroller software application.