Clear Com EF-701M 4-Wire Interface with Call Signal

PA SKU # CCM EF701M MFR # EF-701M
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  • 4-Wire Interface with Call Signal, Matrix-to-Partyline

4-Wire Interface with Call Signal, Matrix-to-Partyline

4-Wire Interface with Call Signal, Matrix-to-Partyline

The EF-701M interface converts a single channel of standard or TW partyline intercom to four-wire audio, while also converting call signals to RS-422 data (and back). The resulting four-wire audio plus RS-422 data can then be sent to a Clear-Com Matrix port, fiber-optic converter (modem) or connected to another EF-701M over twisted-pair cable such as CAT-5E.
  • Clear-Com Format
  • Line Characteristics
  • Max Level Before Clipping: >=20dBu
  • Impedance: >=10KΩ
  • Signalling
  • Receive: <=4 VDC
  • Send: >=11VDC
  • RTS Format
  • Line Characteristics
  • Max Level Before Clipping: >=20dBu
  • Impedance: >=10KΩ
  • Signalling Tone
  • Send frequency: 20kHz ±1KHz
  • Receive frequency: 20kHz ±500Hz
  • Send level: >=-6dBu
  • Receive level: <=-20dBu
  • General Characteristics
  • Frequency Response
  • Partyline - Matrix: 200-10KHz ± 3dB
  • Matrix - Partyline: 200-10KHz ± 3dB
  • Distortion
  • Partyline - Matrix: <=0.5%
  • Matrix - Partyline: <=0.5%
  • Noise
  • Partyline - Matrix: <=-50dBu
  • Matrix - Partyline: <=-70dBu
  • Max Gain
  • Partyline - Matrix (CC setting): 20dB ± 3dB
  • Partyline - Matrix (RTS setting): 16dB ± 3dB
  • Matrix - Partyline (CC setting): -5dB ± 3dB
  • Matrix - Partyline (RTS setting): -1dB ± 3dB
  • Min Gain
  • Partyline - Matrix (CC setting): -7dB ± 3dB
  • Partyline - Matrix (RTS setting): -12dB ± 3dB
  • Matrix - Partyline (CC setting): -33dB ± 3dB
  • Matrix - Partyline (RTS setting): -29dB ± 3dB
  • Power Requirements
  • Input Voltage Range: 20-30VDC
  • Quiescent Current: <=70mA
  • Max Current: <=80mA
  • Rear Panel Connectors and Controls
  • Partyline: (1) XLR3F
  • RTS: (1) DB-15F
  • Matrix: (1) RJ-45, (2) Mode Switches
  • Front Panel Connectors and Controls
  • TS1 Earphone: (1) 3.5mm Jack Socket
  • Level Adjust: (2) Rotary Control
  • Null Adjust: (3) Rotary Control
  • Power Indicator: (1) Green LED
  • Data Indicator: (1) Amber LED
  • Dimensions
  • 1.62 in. H x 5.94 in. W x 4.80 in D
  • (41 mm x 151 mm x 122 mm)
  • Weight
  • 1.75 lbs (.794 kgs)
  • Accessories
  • Wiring diagram, adhesive backed TS-1 testing earphone
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