Clear-Com EF-701M

Clear-Com EF-701M

Clear-Com EF-701M

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


Clear-Com EF-701M
Product Code: EF701M
Offer Clear-Com EF-701M

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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

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CS-702
MS-702
MS-704
SB-704
RCS-2700
RCU-67

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RS-701
RS-702
RS-703

Power Supplies

PK-7
PS-702
PS-704

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RM-702
RM-704

Wall-Mount/Speaker Stations

HB-702
HB-704
KB-701
KB-702
KB-702GM
V-BOX

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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

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FL-7
MT-1
WP-6

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HelixNet

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