CN205666414U - 2M and RJ48 port impedance match connecting device - Google Patents

Abstract

The utility model belongs to the technical field of transmission equipment and router equipment interconnection, concretely relates to 2M and RJ48 port impedance match connecting device has realized transmission equipment and the reliable butt joint of router equipment between different physics ports, has realized the mutual matching of different impedances between the port, including the quartzy head of a RJ48, article one, surpass six types of net twines, an impedance matcher, article two, SYV 75 2 1 coaxial line and two L9 connectors, the quartzy head of RJ48 and the one end that surpasses six types of net twines are according to the crimping of normal line preface, two 120 omega input welding that surpass the other end with the impedance matcher of six types of net twines, article two, SYV 75 2 1 in the coaxial line one end, the outer conductor respectively with two 75 omega inputs welding of impedance matcher, article two, SYV 75 2 1 the coaxial line other end respectively with two L9 connectors in, the outer conductor welds and the crimping. The utility model discloses guaranteed the interconnection between data transmission quality and the different interface device, especially adapted interconnection in communication transmission equipment and router equipment room is docked.

Description

A kind of 2M with RJ48 port Impedance mates attachment means

Technical field

This utility model belongs to transmission equipment and router device interconnection technique field, is specifically related to a kind of 2M Yu RJ48 end Mouth impedance matching attachment means.

Background technology

In communication system and other system are constructed, the 2M interface of transmission equipment is often and the RJ48 interface of router device Docking.Owing to the interface mode of two kinds of equipment is different, generally use the subsidiary connecting line of router device or the company of market purchasing Wiring is docked.But, these connecting lines, owing to only considered the conversion of physical interface, do not consider the impedance matching merit of interface Can, in equipment interconnection is debugged, therefore often occur that some are difficult to investigation and particularly troublesome problem.Topmost problem shows At once two kinds of equipment interconnections, the data packetloss rate of router device occurs unstable and exceeds required standard；If individually to biography Transfer device carries out 24 hours 2M error monitorings, test result bit error rate conformance with standard requirement；Individually router is carried out packet loss Test, the stably also conformance with standard requirement of test result packet loss.The generation of this situation brings the biggest to system debug work Difficulty, have influence on whole system opens quality, even significant data transmission leave potential safety hazard.After through repeatedly trying Test, and eliminate the factors such as outside electromagnetic interference, equipment ground are bad and artificial, but result is still such, to debugging efforts band Carry out the biggest puzzlement.Through research and analysis further, two kinds of equipment are the most working properly, go wrong, very may be used after docking Can be that docking operation goes wrong, after the factor eliminating the bad connection of connecting line own, it is judged that be probably two kinds of equipment and connect Mouth impedance mismatch causes, because router device interface impedance is 120 Ω, and the interface impedance of transmission equipment is 75 Ω.Connect Mouth impedance mismatch can cause data signal reflections, and the result of reflection makes normal data signal decay, the journey of data signal decay Degree is determined by impedance mismatch degree, and when normal data signal decays to a certain degree, the data packetloss rate of router device starts Instability also exceeds standard.

Summary of the invention

This utility model is in order to solve transmission equipment and router device reliably docking between different physical ports, same The coupling of different impedances between Shi Shixian port, it is ensured that data transmission quality, proposes a kind of 2M with RJ48 port Impedance coupling and is connected Device.

This utility model adopts the following technical scheme that realization: a kind of 2M with RJ48 port Impedance mates attachment means, including One RJ48 crystal head, one surpass six class netting twines, an impedance matching box, two SYV-75-2-1 coaxial lines and two L9 even Joint, has the 120 Ω/75 Ω transducers that two sets are made up of, described RJ48 water magnet ring and coil in described impedance matching box Crystal-tipped is crimped by normal line sequence with the one end surpassing six class netting twines, surpasses 1#, 2# line of the other end of six class netting twines with 4#, 5# line respectively Welding with two 120 Ω inputs of impedance matching box, remaining line suspends；Two described SYV-75-2-1 coaxial line one end Inner and outer conductor is welded with two 75 Ω inputs of impedance matching box respectively, and two SYV-75-2-1 coaxial line other ends are respectively Weld with the inner and outer conductor of two L9 union joints and crimp.

During use, RJ48 crystal head of the present utility model is plugged into router device RJ48 trunk interface, and two L9 connect Head is plugged into the 2M of transmission equipment respectively and sends port and receiving port.

Utilize this utility model to carry out docking test further, and carry out monitoring in 48 hours, result of the test router device Data packetloss rate stable and no longer exceed standard.By multinomial practical implementation, respond well, router device number occurs the most again Situation that is unstable according to packet loss and that exceed standard, the most thoroughly solves router device data packetloss during equipment interconnection Rate instability the technical barrier exceeded standard, save substantial amounts of human and material resources and system debug time, improve work efficiency, Ensure that system debug quality.

This utility model hinge structure has the advantages that and can be effectively realized 2M Yu RJ48 physical port Docking, be simultaneously achieved between port being mutually matched of different impedance, it is to avoid the signaling reflex caused because of impedance mismatch satisfies the need The packet loss impact produced by the transmission of device device data, it is ensured that the interconnection between data transmission quality and different interface devices is mutual Logical.This utility model is that one-shot forming makes due to plug, cable, impedance-matching device, thus has plug and play, user Just, it is not required to features such as debugging, cost is low, stable performance, not power consumption, is very suitable between telecommunication transmission equipment and router device Interconnection docking.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

In figure: 1-RJ48 crystal head, 2-surpass six class netting twines, 3-impedance matching box, 4-SYV-75-2-1 coaxial line I, 5- SYV-75-2-1 coaxial line II, 6-L9 adapter I, 7-L9 adapter II, a, b are defeated with the two of c, d-impedance matching box 120 Ω Enter two 75 Ω inputs of end, e, f and g, h-impedance matching box, m-inner wire, n-outer conductor.

Detailed description of the invention

In conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further:

As it is shown in figure 1, a kind of 2M with RJ48 port Impedance mates attachment means, including a RJ48 crystal head, one 1 meter Length surpasses six class netting twines, the impedance matching box of a Plastic Package (includes the 120 Ω/75 Ω conversions that 2 sets are made up of magnet ring and coil Device), the SYV-75-2-1 coaxial line of two 1 meter long and two L9 union joints.Described RJ48 crystal head with surpass six class netting twines One end is crimped by normal line sequence, surpass six class netting twines the other end 1#, 2# line and 4#, 5# line respectively with two of impedance matching box 120 Ω input a, b weld with c, d, and remaining line suspends；The inner and outer conductor of two described SYV-75-2-1 coaxial line one end Welding with g, h with two 75 Ω input e, f of impedance matching box respectively, the other end is inside and outside with two L9 union joints respectively leads Body welds and crimps.

During use, the RJ48 crystal head of this device is plugged into router device RJ48 trunk interface, and two L9 union joints divide The 2M not being plugged into transmission equipment sends port and receiving port.

Claims (1)

1. 2M with a RJ48 port Impedance mates attachment means, it is characterised in that: it include a RJ48 crystal head (1), one Bar surpasses six class netting twines (2), an impedance matching box (3), two SYV-75-2-1 coaxial lines and two L9 union joints, described Impedance matching box (3) in have the 120 Ω/75 Ω transducers that two sets are made up of, described RJ48 crystal head (1) magnet ring and coil Crimping by normal line sequence with the one end surpassing six class netting twines (2), 1#, 2# line of the other end surpassing six class netting twines (2) divides with 4#, 5# line Not welding with two 120 Ω inputs of impedance matching box (3), remaining line suspends；Two described SYV-75-2-1 coaxial lines The inner and outer conductor of one end is welded with two 75 Ω inputs of impedance matching box (3) respectively, and two SYV-75-2-1 coaxial lines are another One end inner and outer conductor with two L9 union joints respectively is welded and is crimped.