Studio Technologies 45DC Dante to 2-Channel Party Line Intercom Interface

Studio Technologies 45DC Dante to 2-Channel Party Line Intercom Interface The StudioTechnologies Model 45DC Dante to Dual Party-Line Intercom Interface is designed for applications that utilize single-channel analog party-line (PL) intercom technology. The unit provides two independent single-channel interfaces that each support one party-line audio channel. Single-channel party-line intercom systems are commonly used in theater, entertainment, and education applications where a simple, reliable, low-cost, and easy to use solution is desired. Analog party-line products from Clear-Com are directly compatible with the Model 45DC. The Dante audio-over-Ethernet media networking technology is used to transport the send and receive audio channels associated with each of the two party-line circuits. Two hybrid circuits with automatic nulling provide excellent audio quality and high return-loss. (These hybrid circuits are sometimes referred to as 2-wire to 4-wire converters.) The Model 45DC is directly compatible with the latest broadcast and audio equipment that uses Dante technology. An Ethernet connection is all that's required to make the Model 45DC part of a sophisticated, networked audio system. Key Features Dante audio-over-Ethernet technology Integrated party-line intercom power sources Analog hybrids with auto null capability Input and output level metering Excellent audio quality PoE and 12 Vdc powering Standard connectors Table-top, portable, or optional rack-mount use Technical Specifications Power Sources Power-over-Ethernet (PoE) class 3 (medium power) per IEEE 802.3af External 10 to 18 Vdc, 1.0 amp max @ 12 Vdc Network Audio Technology Type Dante audio-over-Ethernet Bit Depth up to 24 Sample Rate 48 kHz Number of Receiver (Input) Channels 2 Number of Transmitter (Output) Channels 2 Dante Audio Flows 4; 2 receiver, 2 transmitter Analog to Digital Equivalence a +4 dBu input with 0 dB gain selected results in a Dante digital output level of -20 dBFS Network Interface Type twisted-pair Ethernet, Power-over-Ethernet (PoE) supported Data Rate 100 Mb/s (10 Mb/s Ethernet not supported) Frequency Response (PL to Dante) -0.3 dB @ 100 Hz (-4.8 dB @ 20 Hz), -2 dB @ 8 kHz (-2.6 dB @ 10 kHz) Frequency Response (Dante to PL) -3.3 dB @ 100 Hz (-19 dB @ 20 Hz), -3.9 dB @ 8 kHz (-5.8 dB @ 10 kHz) Distortion (THD+N) <0.01%, measured at 1 kHz, Dante input to PL interface pin 3 Signal-to-Noise Ratio >73 dB, A-weighted, measured at 1 kHz, Dante input to PL interface pin 3 Party-Line (PL) Intercom Interface: 2 Type single-channel PL (pin 1 common; pin 2 DC; pin 3 unbalanced analog audio) Compatibility single-channel PL intercom systems such as those offered by Clear-Com Power Source, Pin 2 28 Vdc, 150 mA maximum Impedance, pin 3 - Local Power Not Enabled >10 k ohms Impedance, pin 3 - Local Power Enabled 200 ohms Analog Audio Level -14 dBu, nominal, +7 dBu maximum Call Light Signal Support DC voltage on pin 3; detect @ 5 Vdc nominal; generate @ 16 Vdc nominal Mic Kill Signal Support - Local Power Enabled momentary break in DC voltage on pin 2 Party-Line Hybrids: 2 Topology 3-section analog circuitry compensates for resistive, inductive, and capacitive loads Nulling Method automatic upon user initiation, processor implements digital control of analog circuitry; settings stored in non-volatile memory Nulling Line Impedance Range 120 to 350 ohms Nulling Cable Length Range 0 to 3500 feet Trans-Hybrid Loss >55 dB, typical at 800 Hz Meters: 4 Function displays level of audio input and output channels Type 5-segment LED, modified VU ballistics Connectors Party-Line (PL) Intercom two 3-pin male XLR Ethernet Neutrik etherCON RJ45 External DC 4-pin male XLR USB type A receptacle Dimensions 8.7 inches wide (22.1 cm) 1.72 inches high (4.4 cm) 8.3 inches deep (21.1 cm) Weight 1.7 pounds (0.77 kg); rack-mount front panels add 0.2 pounds (0.09 kg)