Storewide Sales 8%-17% Off with special offers and discounts **Exclusions Apply** Learn More
Get A $50-$200 Gift Card After Your Purchase. LEARN MORE
Earn An Extra $1000 A Month When You Partner With Us. *Join Our Community*

Shopping Cart

0

Your shopping bag is empty

Go to the shop

Clear-Com | EF-701M Four Wire RS-422 Interface with Call Signal | Clear-Com

ASK AN EXPERT

Our expertly trained Sales Engineers are ready to help!

810-331-0747
$796.50 $885.00
In stock

4-Wire Interface with Call Signal, Matrix-to-Party-line. The EF-701M interface connects one channel of standard or TW party-line intercom to four-wire audio, and simultaneously converts either the DC-voltage call signal or 20kHz call signal to RS-422 data (and back). The resulting four-wire audio plus RS-422 data can then be sent to a fiber-optic converter (modem) or transmitted over twisted-pair cable such as CAT-5. Excellent stand-alone two-to-four-wire converter and hybrid null and wide-range level controls. Easily mounted...

Read More
Clear-Com | EF-701M Four Wire RS-422 Interface with Call Signal | Clear-Com

Clear-Com | EF-701M Four Wire RS-422 Interface with Call Signal | Clear-Com

4-Wire Interface with Call Signal, Matrix-to-Party-line. The EF-701M interface connects one channel of standard or TW party-line intercom to four-wire audio, and simultaneously converts either the DC-voltage call signal or 20kHz call signal to RS-422 data (and back). The resulting four-wire audio plus RS-422 data can then be sent to a fiber-optic converter (modem) or transmitted over twisted-pair cable such as CAT-5. Excellent stand-alone two-to-four-wire converter and hybrid null and wide-range level controls. Easily mounted on a utility rack shelf; up to three units will fit across a standard 1-RU rack space. No additional power connection is required, as the EF-701M is powered by the intercom line.

Product Specs

Clear-Com Format
Line Characteristics
Max Level Before Clipping >=20dBu
Impedance >=10Kohms
Signalling
Receive <=4 VDC
Send >=11VDC
RTS Format
Line Characteristics
Max Level Before Clipping >=20dBu
Impedance >=10Kohms
Signalling Tone
Send frequency 20kHz ±1KHz
Receive frequency 20kHz ±500Hz
Send level >=-6dBu
Receive level <=-20dBu
General Characteristics
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)
For further assistance or questions please contact a Whoisblest Specialist by typing "Help" in our chatbox. We look forward to hearing from you.

Top-Sellers

...
Sale

AKG| K371 PROFESSIONAL HEADPHONES | AKG

0 Reviews

$149.00 $186.25

...
Sale