Clear-Com IF4BD Intercom Interface 4 Wire- 2x Module Version

Clear-Com IF4BD Intercom Interface 4 Wire- 2x Module Version

The IF4-B modular 4-wire interface connects camera intercoms, two-way radios, fiber optics, and other 4-wire devices to a standard Clear-Com intercom line. The 1-RU chassis holds up to four individual interface modules, each with its own 4-wire terminal block and XLR-3M connector to interface with Clear-Com.

Featuring broadcast-quality circuitry, the unit matches industry-standard 600-ohm transmit/receive lines (at normal levels) to Clear-Com line level. The IF4-B accepts balanced or unbalanced 4-wire input and is transformer isolated. It is powered by the Clear-Com intercom line, using standard two-conductor shielded mic cable.

Features:

• Modular design provides one to four 4-wire interfaces in one rack space
• Interfaces TV cameras, 2-way radios, fiber-optic circuits, and other devices to Clear-Com party-line intercom
• Each interface has individual transmit, receive, and null controls
• Transmit output switchable between mic and line level, with transmit-level indicator
• Built-in test jack and oscillator enable quick nulling of the transmit/receive hybrid
• Selective party-line capability
• Carbon or dynamic mic emulation
• Accepts balanced or unbalanced 4-wire input
• Transformer isolated
• Terminal block and XLR connectors provided for each interface
• Powered by the Clear-Com line

Specifications:

• General:
  • Frequency Response: 200 Hz - 17 kHz, ±3 dB
  • Hybrid Null: >40 dB
  • Distortion: <0.5% THD
  • Clear Com Line Level: -15 dBv nominal
  • Line Impedance: 15K Ohms bridging
• Transmit:
  • Switchable gain, transformer isolated
  • Line Output:
    • Impedance: 600 Ohms
    • Level @ 1 kHz: -25 dB to +10 dB
  • Carbon Mic Output:
    • Impedance: Approximately 150 Ohms
    • Level @ 1 kHz: -34 dB to +1 dB
  • DYNAMIC MIC Output:
    • Impedance: Approximately 120 Ohms
    • Level @ 1 kHz: -71 dB to -36 dB
• Receive:
  • Transformer Isolated
  • Level: Adjustable, -30 dB to +10 dB
  • Impedance: 10K Ohms bridging
  • Connectors:
    • (4) 3-pin XLR and (4) 4-pin terminal blocks
• Power:
  • DC Voltage: Powered by Clear-Com line
  • DC Current: 50 mA per module
• Dimensions:
  • 1.75" H x 19" W x 6.8" D
  • (45 x 487 x 180 mm)
• Weight:
  • 3.25 lbs (1.47 kg)