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

Product Code: EF701M

4-Wire Interface with Call Signal, Matrix-to-Party-line

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). 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

Technical Details of EF-701M

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 of EF-701M

Frequency Response	Party-line – Matrix: 200-10KHz ± 3dB Matrix - Party-line: 200-10KHz ± 3dB
Distortion	Party-line - Matrix: <=0.5% Matrix - Party-line: <=0.5%
Noise	Party-line - Matrix: <=-50dBu Matrix - Party-line: <=-70dBu
Max Gain	Party-line - Matrix (CC setting): 20dB ± 3dB Party-line - Matrix (RTS setting): 16dB ± 3dB Matrix - Party-line (CC setting): -5dB ± 3dB Matrix - Party-line (RTS setting): -1dB ± 3dB
Min Gain	Party-line - Matrix (CC setting): -7dB ± 3dB Party-line - Matrix (RTS setting): -12dB ± 3dB Matrix - Party-line (CC setting): -33dB ± 3dB Matrix - Party-line (RTS setting): -29dB ± 3dB
Power Requirements	Input Voltage Range: 20-30VDC Quiescent Current: <=70mA Max Current: <=80mA
Rear Panel Connectors and Controls	Party-line: (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

Clear-Com

Digital Matrix

Party-Line

Main Stations

CS-702

MS-702

MS-704

SB-704

RCS-2700

RCU-67

Wired Beltpacks

RS-701

RS-702

RS-703

Power Supplies

PK-7

PS-702

PS-704

Remote Stations

RM-702

RM-704

Wall-Mount/Speaker Stations

HB-702

HB-704

KB-701

KB-702

KB-702GM

V-BOX

Interfaces

AC-701

TW-12C

IF4W4

EF-701M

TW-47

TWC-701

TWC-704

Que-Com

SMQ-1

DMQ-2

Wireless IFB Intercom

PRC-2

PTX-3

Program Interrupt (IFB)

AB-120

AX-704

MA-704

PIC-4704

TR-50

TS-1

Accessories

FL-7

MT-1

WP-6

Wireless Intercom

IP Communication

HelixNet

Accessories