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EF-701M

The EF-701M interface converts a single channel of standard or TW party line intercom to four-wire audio, while also converting call signals to RS-422 data (and back).

Note: Access the Encore Power Supply Calculator to estimate power requirements for analog partyline systems.

Details

  • High-quality partyline to 4-wire audio conversion interface
  • Maintains hybrid null with multiple units on a channel
  • Converts call signals to RS-422 data with selectable baud rate
  • Connects intercom with call signal over fiber
  • Clear-Com and RTS compatible
  • Built-in test tone and jack for nulling
  • Multi-mode data status LED
  • Powered by the intercom line

Item Code

EF-701M

Technical
Specifications

Clear-Com Format

Line Characteristics

Max Level Before Clipping: >=20dBu

Impedance: >=10KΩ

 
Signaling

Receive: <=4V DC

Send: >=11V DC

 

RTS Format

Line Characteristics

Max Level Before Clipping: >=20dBu

Impedance: >=10KΩ 

Signaling Tone

Send frequency: 20kHz ±1kHz

Receive frequency: 20kHz ±500Hz

Send level: >=-6dBu

Receive level: <=-20dBu

 
General Characteristics

Frequency Response: Partyline - Partyline: 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: 20-30V DC

Quiescent Current: <=70mA

Max Current: <=80mA

 
Dimensions

1.62 x 5.94 x 4.8in (HxWxD)

(41 x 151 x 122mm)

 
Weight
1.75lbs (0.79kg)

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started?

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