CN102064896A - 2M communication channel loopback detection method - Google Patents
2M communication channel loopback detection method Download PDFInfo
- Publication number
- CN102064896A CN102064896A CN2010106069676A CN201010606967A CN102064896A CN 102064896 A CN102064896 A CN 102064896A CN 2010106069676 A CN2010106069676 A CN 2010106069676A CN 201010606967 A CN201010606967 A CN 201010606967A CN 102064896 A CN102064896 A CN 102064896A
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- loopback
- communication equipment
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- communication
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention relates to a 2M communication channel loopback detection method which comprises the following steps of: firstly, designing a 2M communication channel loopback detection device comprising three pairs of terminals, connecting paired 2M cables of communication equipment to the 2M communication channel loopback detection device, sending a test signal by the communication equipment, controlling on and off through a switch on the detection device, disconnecting or connecting the 2M channel by maintenance personnel as required, and looping the test signal back to the communication equipment. When the switch is closed, transmission signal lines among cables of terminals 1 and 2, terminals 3 and 4 and terminals 5 and 6 are connected; and when the switch is opened, the transmission signal lines are disconnected. Whether the 2M communication channel and a 2M connector are normal is judged according to the condition whether the communication equipment has signal loopback or parameters of a loopback signal so as to assist fault location. The test and maintenance cost of the communication equipment is reduced, the working pressure of the maintenance personnel is alleviated, and the working efficiency is increased.
Description
Technical field
The present invention relates to a kind of 2M communication port loopback inspection method, be 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 the E1 mouth 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 on optical communication, programme-controlled exchange, PCM access device and even the 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
Purpose of the present invention: a kind of 2M communication port loopback inspection method is provided, realizes 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 object of the invention is taked is: at first design 2M passage loopback testing fixture, 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 links together by three-way switch respectively; Every pair of wire connection terminals exterior shield layer links to each other respectively; Three-way switch is located on the square shell wall; 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 the 2M of UNICOM passage by the attendant, test signal is looped back to communication equipment; When closing a switch, 1,2 terminals, 3,4 terminals, 5,6 terminal cable intermediate conveyor holding wires are communicated with, and during cut-off switch, transmission signal line disconnects; Have or not the parameter of signal loopback or loopback signal according to communication equipment, judge whether 2M communication port, 2M connector be normal, with this auxiliary fault location.
Good effect of the present invention 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 physical interface (interface on ODF frame or the DDF frame) that extends and do the Hardware loopback 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.
Description of drawings
Accompanying drawing 1 is the inventive method device external structure schematic diagram; Accompanying drawing 2 is a device back panel wiring schematic diagram; Accompanying drawing 3 is that 2M passage loopback is checked schematic diagram.
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 present invention 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 the 2M of UNICOM passage by the attendant, test signal is looped back to communication equipment.When closing a switch, 1,2 terminals, 3,4 terminals, 5,6 terminal cable intermediate conveyor holding wires are communicated with, and during cut-off switch, transmission signal line disconnects.Have or not the parameter of signal loopback or loopback signal to judge whether 2M communication port, 2M connector be normal according to communication equipment, with this auxiliary fault location.
Claims (1)
1. 2M communication port loopback inspection method, it is characterized in that: at first designing one has three opposite ends molecular 2M communication port loopback testing fixture, 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, every pair of wire connection terminals internal core links together by three-way switch respectively, and every pair of wire connection terminals exterior shield layer links to each other respectively; With the 2M cable mounted in pairs of communication equipment on 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 the 2M of UNICOM passage by the attendant, test signal is looped back to communication equipment; When closing a switch, 1,2 terminals, 3,4 terminals, 5,6 terminal cable intermediate conveyor holding wires are communicated with, and during cut-off switch, transmission signal line disconnects; Have or not the parameter of signal loopback or loopback signal according to communication equipment, judge whether 2M communication port, 2M connector be normal, with this auxiliary fault location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106069676A CN102064896A (en) | 2010-12-27 | 2010-12-27 | 2M communication channel loopback detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106069676A CN102064896A (en) | 2010-12-27 | 2010-12-27 | 2M communication channel loopback detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102064896A true CN102064896A (en) | 2011-05-18 |
Family
ID=44000016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106069676A Withdrawn CN102064896A (en) | 2010-12-27 | 2010-12-27 | 2M communication channel loopback detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102064896A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149497A (en) * | 2013-02-28 | 2013-06-12 | 鸡西电业局 | Failure detector of 2M head and connected cable |
| CN103293434A (en) * | 2013-05-27 | 2013-09-11 | 国家电网公司 | Automatic loopback test set for 2M cables |
| CN104518371A (en) * | 2013-09-27 | 2015-04-15 | 国家电网公司 | Four-pawl DDF connector based on movable connecting piece |
| CN111398861A (en) * | 2020-03-24 | 2020-07-10 | 广西电网有限责任公司梧州供电局 | 2M cable fault detection circuit |
-
2010
- 2010-12-27 CN CN2010106069676A patent/CN102064896A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149497A (en) * | 2013-02-28 | 2013-06-12 | 鸡西电业局 | Failure detector of 2M head and connected cable |
| CN103293434A (en) * | 2013-05-27 | 2013-09-11 | 国家电网公司 | Automatic loopback test set for 2M cables |
| CN103293434B (en) * | 2013-05-27 | 2015-06-24 | 国家电网公司 | Automatic loopback test set for 2M cables |
| CN104518371A (en) * | 2013-09-27 | 2015-04-15 | 国家电网公司 | Four-pawl DDF connector based on movable connecting piece |
| CN111398861A (en) * | 2020-03-24 | 2020-07-10 | 广西电网有限责任公司梧州供电局 | 2M cable fault detection circuit |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Open date: 20110601 |