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)
