| Remarks： Our fiber optical multiplexer can multiplex to 4 E1 signals for
transmission and long wavelength digital transmission receiving
over an optical fiber. 1. Overview
1.1 Function Description Our fiber optical multiplexer can multiplex to 4 E1 signals for
transmission and long wavelength digital transmission receiving
over an optical fiber, resulting in reaching a longer distance
without a repeaters and superior performance compared to copper
media. 4E1 fiber optical multiplexer is the 4E1 point-to-point optical
transport equipment that uses the FPGA chips and it is easy to
upgrade. It is single board structure and the largest transmission
capacity is 4E1. The outer design use the standard 19 inches rack,
so the volume is little, weight is light and operation is
convenient and credit. 4E1 fiber Multiplexer adopts the PDH fiber transmission
technologies. The 2M (E1) interfaces can connect with the
exchanger, light loop device and multi-diplexer directly to form a
special network. Complete alarm function for 4E1 fiber optical
multiplexer, it is stable and easy to maintenance, install and
small in size. It has one digital service telephone. 1.2 Features the features for 4E1 fiber optical multiplexer: Offer 42Mb/s digital interfaces Up to 4 E1 links on one fiber Management through Console port The supervisory control interface implements centralized monitoring
and export the monitor and control information of this port and
opposite port. One link to service telephone for duty contract 175-260VAC & -48VDC power options and the positive and negative
of DC-48V can be optional because there is the self-test circuit
for the polarity inside th1e device Standard 19/9.5 inches rack, little volume, light weight, steady
capacity and convenient setup Digital clock recovery circuit and digital smooth DPLL adopted for
2.048Mb/s port LED indicators
1.3 Application 4E1 fiber optical multiplexer can be used a high-speed baseband
modem for point to point that connects two DTE over a lease Line.
From Router CSU/DSU 4E1 fiber optical multiplexer Fiber optical 4E1
fiber optical multiplexer CSU/DSU DTE as illustrated in the
Following Diagram.
Diagram 1.1
1.4 Specification
E1 line Interface
| Number of E1 | 4E1 | Interface standard | ITU-T G.703 | | Line Rate | 2.048Mbps±50ppm | E1 Impedance | 120 (banlance) | | Line Code HDB3 | HDB3 | Connector Type | RJ45 | | Jitter tolerance | Fine than G.742, G.823 | | |
Optical Fiber Interface | Wavelength | 1310 or 1550 ±50/40nm | Connector Type | FC/SC | | Light Source | MLM Laser | Detector PIN | Photodiode | | System Gain | 26 dB (minimum) | Input Sensitivity | -38dBm(Ber<10e-10) | | Line Code | Scrambled NRZ | | |
Note: Longer o
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