Studio Technologies Model 45DC Dante to Dual Party-Line Intercom Interface

Designed for applications that utilize single-channel analog party-line (PL) intercom technology, the Studio Technologies Model 45DC Dante™ to Dual Party-Line Intercom Interface is the type of intercom that's commonly used in theater, entertainment, and education applications where a solution that's simple, reliable, low-cost, and easy to use is desired. Analog party-line products from Clear-Com® are also compatible. 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.) It's directly compatible with the latest broadcast and audio equipment that uses Dante technology. An Ethernet connection is all that's required to make this useful unit part of a sophisticated, networked audio system.

This unit allows for interconnecting with devices such as matrix intercom systems, DSP processors, and audio consoles, and is directly compatible with the RTS ADAM OMNEO matrix intercom network. Alternately, two Model 45DC units (additional units sold separately) can interconnect by way of the associated Ethernet network. This device can be powered either via Power-over-Ethernet (PoE) or an external source of 12 volts DC. A party-line power source and impedance termination network can be supplied by this device, enabling connection of user beltpacks such as the Clear-Com RS-501 and RS-701 (both sold separately). The unit can also connect with an existing powered and terminated intercom circuit. Audio level meters provide confirmation of system performance during setup and operation. Standard connectors are used for party-line intercom, Ethernet, and DC power interconnections. Its enclosure has a "½-rack" 1U form-factor and weighs less than 2 lbs., making it well-suited for use in portable applications. Alternately, using one of the optional rack-mount front panels, one or two Model 45DC units can be mounted in a single rack-space (1U).

Studio Technologies Model 45DC 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 volt DC powering
• Standard connectors
• Table-top, portable, or optional rack-mount use

Studio Technologies Model 45DC Specifications:

• Power Sources:
  • PoE: Class 3 (medium power) per IEEE 802.3af
  • External: 10 to 18 volts DC, 1 amp max @ 12 volts DC
• Network Audio Technology:
  • Type: Dante Audio-over-Ethernet
  • Bit Depth: Up to 24-bit
  • Sample Rates: 44.1 and 48 kHz
  • Number of Output Channels: 2
  • Number of Input Channels: 2
  • Network Interface:
  • Type: Twisted-pair Ethernet, Power-over-Ethernet (PoE) supported
  • Data Rate: 100 Mb/s (10 Mb/s Ethernet not supported)
• General Audio:
  • Frequency Response: +0/–3 dB, 100 Hz to 8 kHz
  • Distortion (THD+N): Less than TBD%, measured at 1 kHz, Dante input to party-line interface pin 3
  • Signal-to-Noise Ratio: Greater than TBD dB, measured at 1 kHz, Dante input to party-line interface pin 3
• Party-Line (PL) Intercom Interface: 2
  • Type: Single-channel party-line (pin 1 common; pin 2 DC; pin 3 unbalanced analog audio) Compatibility: single-channel intercom systems such as those offered by Clear-Com
  • Impedance, pin 3 – Local Power Not Enabled: Greater than 10 kΩ
  • Impedance, pin 3 – Local Power Enabled: 200 Ω
  • Analog Audio Level: –10 dBu, nominal, +TBD dBu maximum
  • "Call Light" Signal: DC voltage on pin 3
  • "Mic Kill" Signal: Momentary break in DC voltage on pin 2
  • Power Source, Pin 2: 20 volts DC, 200 mA maximum
• 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 Ω
  • Nulling Cable Length Range: 0 to 3500 feet
  • Trans-Hybrid Loss: Greater than 40 dB, typical at 800 Hz
• Meters: 4
  • Function: Displays level of Dante input and output channels
  • Type: 5-segment LED, modified VU ballistics
• Connectors:
  • Party-Line Intercom: Two 3-pin male XLR
  • Ethernet: Neutrik etherCON RJ45
  • USB: Type A receptacle
  • External DC: 4-pin male XLR
• Dimensions (Overall) (W x H x D): 8.7" x 1.72" x 8.3" (22.1 x 4.4 x 21.1cm)
• Mounting Option: 1U rack-mount front panels for one or two units
• Weight: 1.7 lbs. (0.77 kg); rack-mount front panels add 0.2 lbs. (0.09 kg)
• Note: additional information can be found within the items located under the "Documentation" tab above.