1 Channel IEEE C37.94 to E1 Converter

The C37.94 fiber interface conforms to the IEEE C37.94-2002 standard and is used for fiber interface communication between N*64K remote protection multiplexing devices. It enables the conversion of fiber interfaces within a substation to E1 communication links, and facilitates transmission through E1 transmission equipment such as PDH, SDH, G.SHDSL, and others.

● It implements the conversion between one channel of IEEE C37.94 and one channel of E1, enabling transmission through E1 transmission equipment such as PDH, SDH, G.SHDSL, and others.

● The E1 interface simultaneously supports adaptive 120Ω/balanced and 75Ω/unbalanced impedance without requiring additional configuration.

● It has undergone rigorous system testing and practical validation, fully complying with ITU-T G.703, G.704, and IEEE C37.94 protocols.

● The device supports AC 220V, DC-48V, DC+24V, and DC-48V/DC24V power supplies, featuring automatic polarity detection and the ability for dual power backup.

● C37.94 Interface

Optical port: 1

Rate: 2048kbps

Standard protocol: IEEE C37.94

Wavelength: 850nm/1310nm for multi-mode; 1310nm for single-mode

Transmission distance without relay: 2km for multi-mode; 20-100km for single-mode

Typical transmit power:

Single-mode 1310/1550nm: ≥-9dB

Multi-mode 850nm:-18dBm

Multi-mode 1310nm:-25dBm

Receiver sensitivity range: -28dBm~-40dBm

● E1 Interface 

Device interface: The device interface conforms to the G.703 recommendation

Rate: 2048Kb/s±50ppm

Line code: HDB3

Impedance: Unbalanced 75Ω/balanced 120Ω (Unbalanced with coaxial interface adapter, compatible with 75-2/3 coaxial cables)

Jitter characteristics: Complies with G.742, G.823 recommendations

Input attenuation allowed: 0-6dBm

● Environmental Indicators

Operating temperature: -10 ℃ – +60 ℃

Storage temperature: -40 ℃ – +85 ℃

Humidity: 0% -95% (non-condensing)

MTBF:> 100,000 hours