4 E1 Fiber Modem HY-PDH04

Overview:

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

Features

• Based on self -copyright IC
• Modular wide dynamic optical detector
• Uses standard 2 wire telephone (non-telephone handles) set as engineeringorder-wirehotline(optional)
• E1 interface comply with G.703, adopts digital clock recovery and smooth phase-lock technology
• When optical signallost, it can detect the remote device is power off or fiber is disconnected, and indicates alarm by LED
• The local device can view the remote device 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

Parameters

• 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)

Specifications