4E1 PDH Fiber Multiplexer

This device provides 1-4* E1 interface, Standard 2-wire telephone as engineering order-wire (optional). It is very flexible. It has an alarm function. The work is reliable, stable, and low power consumption, high integration, small size.

● Based on self-copyright IC

● Modular wide dynamic optical detector

● Uses standard 2 wire telephone(non-telephone handles) set as engineering order-wire hotline(optional)

● E1 interface complies with G.703, adopts digital clock recovery and smooth phase-lock technology

● When the optical signal is lost, it can detect the remote device is powered off or the fiber is disconnected and indicates an alarm by LED

● The local device can view the remote device’s working condition

● Provide command the remote interface Loop Back, ease line maintenance

● The transmission distance is up to 2-120Km without interruption

●  AC 220V, DC-48V, DC+24V can be optional

● DC-48V/DC+24V power supply with automatic polarity detection function, when installed without distinction between positive and negative

● Fiber

Multi-mode Fiber

50/125um, 62.5/125um,

Maximum transmission distance: 5Km @ 62.5 / 125um single mode fiber,attenuation (3dbm/km)

Wave Length: 820nm

Transmitting power: -12dBm (Min) ~-9dBm (Max)

Receiver sensitivity: -28dBm (Min)

Link budget: 16dBm

Single-mode Fiber

8/125um, 9/125um

Maximum transmission distance: 40Km

Transmission distance: 40Km @ 9 / 125um single mode fiber, attenuation (0.35dbm/km)

Wave Length: 1310nm

Transmitting power: -9dBm (Min) ~-8dBm (Max)

Receiver sensitivity: -27dBm (Min)

Link budget: 18dBm

● E1 Interface

Interface Standard: comply with protocol G.703;

Interface Rate: 2048Kbps±50ppm;

Interface Code: HDB3;

E1 Impedance: 75Ω (unbalance), 120Ω (balance);

Jitter tolerance: In accord with protocol G.742 and G.823

Allowed Attenuation: 0~6dBm

● Working environment

Working temperature: -10°C ~ 50°C

Working Humidity: 5%~95 % (no condensation)

Storage temperature: -40°C ~ 80°C

Storage Humidity: 5%~95 % (no condensation)