4E1+4FE (Physical isolation) PDH Fiber Multiplexer

This device is the company developed the PDH fiber transmission dedicated VLSI developed on the basis of point-to-point optical transmission equipment. It provides 1-4 E1 interfaces, primary and backup fiber optical interface connector, 1-4 physical isolation 10/100M Fast Ethernet interface (independent four-wire speed 100M, the total bandwidth is 4*100M), as well as two business expansion interface. 2 Extended service interface can be used as RS232 / RS485 / RS422 asynchronous data, the application is very flexible. Optional one digital service telephone, the application is very flexible. With a sound alarm function, the whole is stable, reliable, low power consumption, high integration, and small size.

● Based on self-copyright IC

● 1-4 physical isolation 10/100M Fast Ethernet interface, every FE Ethernet independent wire speed is 100M, the total bandwidth is 4*100M;

● Provide Console manage interface (RS232)

● Provide two fiber interface 1+1 protect（APS）function

● Ethernet interface rate is 10/100M, half/full duplex Auto-Nego

● Ethernet package supports jumbo frames, up to 10240 byte

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

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

● When the optical loses signal, 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, support local E1Loop Back function, support E1 LOS and AIS alarm, ease line maintenance

● The transmission distance is up to 2-100Km without interruption

● Support SNMP manager (SNMP agent inside)

● AC 220V, DC-48V, DC24V can be optional

● DC-48V/DC24V power supply polarity detection function, Polarity-Free

● 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

● Ethernet Interface (10/100M)

Interface rate: 10/100 Mbps, half/full duplex auto-negotiation

Interface Standard: Compatible with IEEE 802.3, IEEE 802.1Q (VLAN)

MAC Address Capability: 4096

Connector: RJ45, support Auto-MDIX

● 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)