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CLEA-EF701MAvailability:
In StockAvailable for immediate shipment or pick-up from our Jamaica, NY warehouse. In-store pick-up is available Monday through Friday 8:30 am to 5:30 pm.
Description
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... Read MoreOur Price: $1,075.00
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Description
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.
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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) |
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888-462-7828
148-04 95th Ave
Jamaica, NY 11435
Monday - Friday 9:30am - 5:30pm EST
(closed Saturday/Sunday)
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