CN2807624Y

CN2807624Y - Optical Termination

Info

Publication number: CN2807624Y
Application number: CNU200520113489XU
Authority: CN
Inventors: 石美荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-14
Filing date: 2005-07-14
Publication date: 2006-08-16
Anticipated expiration: 2015-07-14

Abstract

The utility model discloses a light end machine, which comprises a machine box, a main board, a power supply, an indicating lamp and various interfaces, wherein a main control chip on the main board is a special integrated chip and comprises 16 E1 mapping interfaces, a multiple signal multiplex circuit and a multiple signal separating circuit. An external interface of the light end machine is provided with 16 E1 interfaces, a network management interface, an RS232 interface, a service telephone interface and an optical fiber interface. The utility model has the advantages of rich interfaces, convenient connection, the realization of centralized monitoring, the support of system upgrade, simple circuit, low power consumption and high reliability.

Description

A kind of optical transceiver

Technical field

The utility model relates to a kind of optical transmission device.

Background technology

At present, widely used optical transceiver is handled and control chip based on general digital mostly, and integrated level is low, power consumption is big, poor reliability, and interface is single, versatility is poor, volume is big, safeguard with upgrade difficult.

Summary of the invention

The utility model is just in order to solve the problems of the technologies described above, and a kind of rich interface of design, convenient, the integrated level high-performance optical terminal high, stable and reliable for performance of control.

The technical scheme that its technical problem that solves the utility model adopts is:

Main control chip on this optical transceiver mainboard is a special integrated chip, 16 road E1 Map Interfaces, multi-way signal multiplexing circuit and multiple signals split circuit are arranged in the special integrated chip, and 16 road E1 Map Interfaces in the special integrated chip link to each other with multi-channel E 1 signal equipment by the single two converters of E1 respectively; Multi-way signal multiplexing circuit in the special integrated chip links to each other with the linear digital signal codec with the multiple signals split circuit, and the other end of linear digital signal codec links to each other with optical fiber interface by light drive circuit.

There are 16 road E1 signal connecting lines to link to each other with 16 pairs of BNC heads on the optical transceiver cabinet rear board respectively on the optical transceiver mainboard; 1 RS232 serial line interface is arranged, and this interface links to each other with RJ45 head on the optical transceiver case front panel; 1 plain old telephone interface is arranged, and this interface links to each other with RJ11 head on the optical transceiver case front panel; 1 network management interface is arranged, and this interface links to each other with RJ45 head on the optical transceiver case front panel.

The optical module that light drive circuit adopted on the optical transceiver mainboard can be single fiber or two fibre, and optical fiber interface is that SC or FC are optional.

16 road 2048Kb/s (E1) data-signal is sent into Integrated Services Transmission equipment, the sign indicating number type is HDB3, after two/monotropic changing, become unipolar code, extract branch clock by special integrated chip, to signal interpretation and through justification, multiple connection also is sent in the code stream that drives light signal, after drive circuit drives optical transmitter.

The receiving terminal light signal enters optical receiver, NRZ signal that generates through equilibrium amplification and timing reproduction circuit and clock signal are delivered to and are carried out Clock Extraction and decoding in the special integrated chip, level and smooth through sign indicating number quick-recovery circuit and internal digital phase-locked loop circuit, revert to 16 road 2048Kb/s signals, send the HDB3 signal that meets interface requirement through output driving circuit.

The beneficial effects of the utility model are rich interface, easy to connect; A network management interface is arranged, can realize centralized monitor, and the back-up system upgrading; Circuit is simple, and is low in energy consumption, the reliability height; Volume is little, and is in light weight, and working stability is reliable, easy for installation.

Description of drawings

Fig. 1 is the utility model functional block diagram.

Embodiment

Below in conjunction with drawings and Examples the utility model is further specified.As shown in Figure 1, the utility model adopts standard 1U cabinet, master control borad adopts extensive special integrated chip, 16 road E1 Map Interfaces, multi-way signal multiplexing circuit and multiple signals split circuit are arranged in the special integrated chip, and 16 road E1 Map Interfaces in the special integrated chip link to each other with multi-channel E 1 signal equipment by the single two converters of E1 respectively; Multi-way signal multiplexing circuit in the special integrated chip links to each other with the linear digital signal codec with the multiple signals split circuit, and the other end of linear digital signal codec links to each other with optical fiber interface by light drive circuit.

16 road E1 signal connecting lines link to each other with 16 pairs of BNC heads on the optical transceiver cabinet rear board respectively on the optical transceiver mainboard; 1 RS232 serial line interface links to each other with RJ45 head on the optical transceiver case front panel; 1 plain old telephone interface links to each other with RJ11 head on the optical transceiver case front panel; 1 network management interface links to each other with RJ45 head on the optical transceiver case front panel.The concrete parameter of this utility model is as follows:

1, optical fiber interface:

Transmitting optical power :-8dBm～-15dBm;

Receiving sensitivity: 〉=-36dBm;

Optical fiber interface: SC, FC type are optional;

Be suitable for optical fiber: single mode 1310nm or multimode fiber are optional;

Light path sign indicating number type: 1B1H;

Optical module: single fiber or two fibre are optional;

Transmission range: common 50Km (can reach 120Km farthest).

2, E1 interface

Nominal rate: 2048Kbit/s ± 50ppm;

Interface code type: HDB3;

Interface impedance: 75 Ω (non-equilibrium) or 120 Ω (balance);

Jitter transfer function: meet ITU-T and G.823 advise;

Input jitter tolerance: meet ITU-T and G.823 advise;

Output jitter: meet ITU-T and G.823 advise;

2048Kbit/s digital interface physical electrical characteristic conforms ITU-TG.703 suggestion;

Interface type: BNC.

3, network management interface

Interface type: RJ-45;

Working method: DCE;

Interface level: RS232;

Can realize centralized monitor by network management interface, and the back-up system upgrading.

4, RS232 interface

Interface rate: asynchronous speed≤57600bit/s is (as 9.6K, 19.2K);

Interface level: RS232 level;

Working method: DCE;

Interface type: RJ-45.

5, official telephone

Physical interface: RJ-11;

No. one business telephone is provided, can connects the conventional handle phone.

Claims

1, a kind of optical transceiver, comprise cabinet, mainboard, power supply, indicator light and various interface, it is characterized in that: the main control chip on the mainboard is a special integrated chip, 16 road E1 Map Interfaces, multi-way signal multiplexing circuit and multiple signals split circuit are arranged in the special integrated chip, and 16 road E1 Map Interfaces in the special integrated chip link to each other with multi-channel E 1 signal equipment by the single two converters of E1 respectively; Multi-way signal multiplexing circuit in the special integrated chip links to each other with the linear digital signal codec with the multiple signals split circuit, and the other end of linear digital signal codec links to each other with optical fiber interface by light drive circuit.

2, optical transceiver according to claim 1 is characterized in that: optical transceiver mainboard 16 road E1 signaling interfaces link to each other with 16 pairs of BNC heads on the optical transceiver cabinet rear board respectively.

3, optical transceiver according to claim 1 is characterized in that: 1 RS232 serial line interface is provided on the optical transceiver mainboard, and this interface links to each other with the RJ45 head of optical transceiver case front panel.

4, optical transceiver according to claim 1 is characterized in that: 1 official telephone interface is provided on the optical transceiver mainboard, and this interface links to each other with the RJ11 head of optical transceiver case front panel.

5, optical transceiver according to claim 1 is characterized in that: 1 network management interface is provided on the optical transceiver mainboard, and this interface links to each other with RJ45 head on the optical transceiver case front panel.

6, optical transceiver according to claim 1 is characterized in that: the optical module that light drive circuit adopted is single fiber or two fibre, and optical fiber interface is SC or FC.