CN201937599U - Loopback inspecting device for 2M communication passage - Google Patents
Loopback inspecting device for 2M communication passage Download PDFInfo
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- CN201937599U CN201937599U CN2010206818247U CN201020681824U CN201937599U CN 201937599 U CN201937599 U CN 201937599U CN 2010206818247 U CN2010206818247 U CN 2010206818247U CN 201020681824 U CN201020681824 U CN 201020681824U CN 201937599 U CN201937599 U CN 201937599U
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- loopback
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Abstract
A loopback inspecting device for a 2M communication passage comprises a square housing, a three-way switch and three pairs of connecting terminals, wherein the three pairs of connecting terminals are mounted on the square housing in pairs, and the core wires in each pair of connecting terminals are connected with each other through the three-way switch; and the external shielding layers of each pair of connecting terminals are respectively connected. The loopback inspecting device has the advantages of aesthetic appearance, light weight, easiness in carrying and simpleness in wiring; the loopback inspecting device is suitable for the loopback test for the 2M connecting terminals of an I9, SMA, MCX radio frequency coaxial connector and particularly suitable for the repair, debugging and maintenance of communication equipment. The 2M cables are connected in pairs with the loopback inspecting device for the 2M communication passage, the communication equipment sends out testing signals, the maintenance staff turns off/on the 2M passage according to the requirements, so as to transmit the testing signals to the communication equipment in a loopback manner; whether the 2M passage and a 2M connecting device are normal or not is determined according to whether the communication equipment has the parameters of signal loopback or loopback signal or not ,so as to position the failure.
Description
Technical field
The utility model relates to a kind of communication 2M passage loopback testing fixture, is used for the loopback detection that optical communication, switching equipment, access device etc. use 2M electrical interface transmission channel.
Background technology
In electric power system, optical transceiver is to be connected with access device by E1 mostly, and the speed of standard E1 interface is 2048kbit/s, is commonly called as the 2M mouth.The most outlet of the optical transceiver that transformer station uses is 16-63 road E1 interface, and the 2M cable is connected on the E1 interface by radio frequency connector.The 2M cable is widely used in optical communication, programme-controlled exchange, PCM access device and even electric protection device.
The line service of transmission system often requires us that all kinds of faults are positioned and in time gets rid of.The fault location most critical be fault location point exactly, fix a breakdown then.To the reason of 2M channel failure sometimes the observation analysis method can not deal with problems, the attendant usually adopts the loopback method to carry out fault location, meet the 2Mbit/s service channel and LOS (dropout) alarm occurs, physical hardware loopback by the 2M tributary port, in conjunction with Error Detector and outloop test, whether the transmission full tunnel that can test certain 2M is normal again.
In the real operation, under the situation that can not use the software loopback, need carry out the physical hardware loopback to the 2M cable.And most transformer stations do not have digital distribution frame, can't utilize the loopback terminal looper above the digital distribution frame, and the communication attendant often adopts copper wire that the transmitting-receiving heart yearn of 2M cable is carried out short circuit, carries out loopback.It is unreliable that this kind " local method " connects, the error rate height, and short circuit has easily influenced fault judgement and communication rush repair greatly.
Summary of the invention
The purpose of this utility model: design a kind of 2M communication port loopback detector, realize the loopback of physical hardware quick and precisely, 1, to solve the 2M connector tiny, is difficult to carry out the drawback of Hardware loopback to the 2M cable; 2, solve the lack of standardization of common copper wire short circuit loop back method, inaccuracy, the drawback of short circuit easily; 3, reduce the test maintaining cost of communication equipment, alleviate communication attendant operating pressure, increase work efficiency.
Realize that the technical scheme that the utility model purpose is taked is: it is made up of square shell, three-way switch and three pair of wire connection terminals, three pair of wire connection terminals mounted in pairs are on square shell, and every pair of wire connection terminals internal core is connected to together by three-way switch; Every pair of wire connection terminals exterior shield layer links to each other respectively; Three-way switch is located on the square shell wall.
Good effect of the present utility model is: can arrange in pairs or groups on the physical port of Optical Line Board OL, electric tributary card (2Mbit/s, 34Mbit/s, 155M) or substitute the physics that extends connects (interface on ODF frame or the DDF frame) and does Hardware loopback and use; The communication attendant can utilize this device often to have the 2M cable of 2M interface and coaxial connector to carry out loopback detection to three kinds, judges 2M channel failure position; Aesthetic in appearance, from heavy and light, be easy to carry, wiring is simple; This device is applicable to the 2M binding post of I9, SMA, MCX radio frequency (RF) coaxial connector, is particularly suitable for the communication equipment construction maintenance, can help the Communication Personnel to use the loopback method that communication transmission passage is judged fast, shortens and fixes a breakdown the time; Can reduce the test maintaining cost of communication equipment, alleviate communication attendant operating pressure, increase work efficiency.
Description of drawings
Embodiment
As shown in Figure 1, it is made up of square shell 1, three-way switch 3 and three pair of wire connection terminals 2, three pair of wire connection terminals, 2 mounted in pairs are on square shell 1,1,2 is a pair of, 3,4 be a pair of, 5,6 for a pair of, every pair of wire connection terminals 2 internal cores 4 are connected to together, and the other end is connected on the three-way switch 3; Every pair of wire connection terminals 2 exterior shield layers link to each other respectively; Three-way switch 3 is located on square shell 1 wall.
The utility model can be by 3 pairs of 2M terminals of three-way switch receiving end and making a start disconnect and be communicated with operation.The 2M cable of communication equipment is become to be docked on the 2M communication port loopback testing fixture, communication equipment sends test signal, by the control of the switch on testing fixture break-make, disconnect as required or be communicated with the 2M passage by the attendant, test signal is looped back to communication equipment, have or not the parameter of signal loopback or loopback signal to judge that whether the 2M communication port is normal, carries out fault location with this according to communication equipment.
Claims (1)
1. 2M communication port loopback detector, it is characterized in that: it is made up of square shell, three-way switch and three pair of wire connection terminals, three pair of wire connection terminals mounted in pairs are on square shell, and every pair of wire connection terminals internal core is connected to together, and the other end is connected on the three-way switch; Every pair of wire connection terminals exterior shield layer links to each other respectively; Three-way switch is located on the square shell wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206818247U CN201937599U (en) | 2010-12-27 | 2010-12-27 | Loopback inspecting device for 2M communication passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206818247U CN201937599U (en) | 2010-12-27 | 2010-12-27 | Loopback inspecting device for 2M communication passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937599U true CN201937599U (en) | 2011-08-17 |
Family
ID=44449103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206818247U Expired - Fee Related CN201937599U (en) | 2010-12-27 | 2010-12-27 | Loopback inspecting device for 2M communication passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201937599U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337659A (en) * | 2015-11-11 | 2016-02-17 | 国网河南省电力公司商丘供电公司 | 2M loopback detector |
| CN105515647A (en) * | 2015-11-27 | 2016-04-20 | 国家电网公司 | Multifunctional loopback tester of 2M digit circuit |
-
2010
- 2010-12-27 CN CN2010206818247U patent/CN201937599U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337659A (en) * | 2015-11-11 | 2016-02-17 | 国网河南省电力公司商丘供电公司 | 2M loopback detector |
| CN105337659B (en) * | 2015-11-11 | 2017-08-04 | 国网河南省电力公司商丘供电公司 | 2M loopback detectors |
| CN105515647A (en) * | 2015-11-27 | 2016-04-20 | 国家电网公司 | Multifunctional loopback tester of 2M digit circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20111227 |