Fiber Modem (4E1/8E1/16E1)

PDH fiber series
4E1/8E1/16E1 Fiber Optical Multiplexer

Model name: BD-OP-4E1
Model name: BD-OP-8E1
MModel name: BD-OP-16E1

1. Function Description

4E1/8E1/16E1 fiber optical multiplexer can multiplex to 4 E1/8E1/16E1 signals for transmission over an optical fiber, resulting in reaching a longer distance without a repeaters and superior performance compared to copper media.

4E1/8E1/16E1 fiber optical multiplexer is the 4E1/8E1/16E1 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 4E1/8E1/16E1. The outer design use the standard 19 inches rack, so the volume is little, weight is light and operation is convenient and credit.

4E1/8E1/6E1 fiber optical multiplexer, is use the PDH fiber transmission technologies. The 2M (E1) interfaces can connect with the exchanger, light loop device and multi-diplexer directly to form the mircomidi or the special network. Complete alarm function for 4E1/8E1/16E1, it is stable and easy to maintenance, install and small in size. It has one digital service telephone.

2. Features
Below lists the features for 4E1/8E1/16E1 fiber optical multiplexer:
1. Offer 4 /8/16 X 2Mb/s digital interfaces
2. Offer one 10/100M Ethernet channel for option
3. The supervisory control interface implements centralized monitoring and export the monitor and control information of this port and opposite port.
4. One link to service telephone for duty contract
5.220VAC & -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
6. Standard 19/9.5 inches rack, little volume, light weight, steady capacity and convenient setup
7. Digital clock recovery circuit and digital smooth DPLL adopted for 2.048Mb/s port
8. LED indicators
9. Has 1+1 fiber protection for optional
10. Power supply redundancy: AC220 and DC-48V or DC-24V combination

Optical interface
Optical wavelength: 850nm/1310nm for multi- mode optical interface,
1310nm/1550nm for single-mode optic interface
Optical interface: SC/FC
Receiving and dispatching module: >-6dBm
Optical receiver receiving sensitivity -30dB
Transmitting range: Multi-mode 2 Km, single-mode 40Km, single-mode 60 Km, single-mode 120Km
Vibration characteristic: Satisfies G. 742 and the G. 823 standard

E1 interface
Interface code: HDB3 code
Line speed: 2.048Mbp/S +(-)50ppm
Interface standard: ITU-T G 703
Interface impedance: 75?unbalanced or 120 ?balanced
Interface characteristic: Supports rack (19 inches, 6U high), can reach up to 24 directions

10/100M Base-T interface:
Interface rate: 10/100Mbps
Interface characteristic: Satisfies IEEE802.3, IEEE802.1Q
Connector: RJ45