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4E1 PDH Fiber Multiplexer

View : 1,912
Type : 1-16E1 Fiber Multiplexer
Description :

The device provides 4 E1 interfaces, with the option to include one digital business telephone.


The device provides 4 E1 interfaces, with the option to include one digital business telephone, offering great flexibility in applications. It features comprehensive alarm functions and ensures stable and reliable operation. The device delivers efficient performance with low power consumption, high integration, and compact size.


4E1 to Optical Fiber Converter 4E1 to Optical Fiber Converter


The device features integrated circuits based on proprietary intellectual property rights.

It uses modular wide-dynamic range optical detectors.

The device includes one PCM digital business telephone. (optional)

E1 interfaces comply with G.703 recommendations and employ full digital clock recovery and smooth phase-locked loop technology.

When the optical signal is lost, it can detect whether 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.

It provides a remote interface loopback function.

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

Standard: Comply with protocol G.703

Rate: 2048Kbps±50ppm

Line Code: HDB3

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

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

Input 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)


Product Model


Function Description

4E1 PDH, order wire phone, Desk-Top Type

Port Description

One optical port, 4 E1 interface (75/120 ohms)


Power supply: AC180V ~ 260V; DC–48V; DC+24V

Power consumption: ≤10W


Product Size: Desk-Top Type   216X138X41mm(WXDXH)




application of 4E1 PDH Fiber Multiplexer


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