4E1 PDH Multiplexer | 19 Inch 1U Type

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 and stable with low power consumption, high integration and 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

Number of Fiber Ports: 1

Optical Wavelength:

850nm/1310nm for multi-mode optical

1310nm/1550nm for single-mode optical interface

Fiber Core: Single/Dual fiber core

Connector: FC/SC/ST/LC(SFP)

Distance: 20km-120km

Typical output power:

single mode 1310/1550nm: >-9dBm

multi-mode 850nm:>-18dBm

multi-mode 1310nm:>-25dBm

Receiver Sensitivity: -28dBm~- 40dBm

● 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)