CN103716205B - Light emitting diode application process in communication operation and maintenance - Google Patents

Abstract

The invention relates to a positioning technology for 2M signal direction in communication operation and maintenance, in particular to an application method of light-emitting diodes in communication operation and maintenance, which uses the signal sent by the 2M signal sending port as the source, and the light-emitting diode as the test equipment , when the light-emitting tube head lights up, it means that the 2M signal port plugged in is the signal output end, if the light-emitting tube head does not light up, it means the 2M signal port plugged in is the signal receiving end; output terminal, but the light-emitting tube head does not light up, it means that the communication line is faulty. The invention overcomes the technical prejudice and adopts the simplest light-emitting diode to realize the test of the 2M signal transmission port. The light-emitting diode is a very commonly used electronic component, which is convenient to obtain materials and low in cost. Conditions are limited, the operation is convenient and simple; it saves time and effort, reduces the workload and improves the work efficiency.

Description

Application method of light-emitting diode in communication operation and maintenance

technical field

The invention relates to a positioning technology of 2M signal direction in communication operation and maintenance, in particular to an application method of light emitting diodes in communication operation and maintenance.

Background technique

At present, the transmission network of the power system is mainly based on a large-scale optical fiber SDH transmission network, which mainly provides 2M channels for business transmission, and the interface is a standard 2M port. The operation and maintenance of 2M channels accounts for a large proportion of communication maintenance work. Therefore, quickly locating the direction of 2M signals and the level of operation and maintenance of 2M channels are particularly important for communication maintenance personnel and interface users, which directly determine work efficiency and quality of work.

In order to locate the direction of the 2M signal, the traditional method is to use a bit error detector or a network management method. But the traditional method is more troublesome in practical application, mainly because the power source is needed when using the bit error detector, and it cannot be completed if the battery is dead or there is no AC power; when using the network management, at least 2 people are required to cooperate, and the communication is smooth .

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a light-emitting diode application method in communication operation and maintenance that does not require an external power supply, is extremely convenient and simple to operate, and is not limited by external communication conditions.

The present invention is achieved through the following approaches:

The key points of the application method of light-emitting diodes in communication operation and maintenance include the following steps:

A light-emitting diode is provided, which includes a light-emitting tube head and two pins;

Make the light-emitting diode and become a test joint: provide a 2M cable joint, weld one pin of the light-emitting diode to the core end of the 2M cable joint, and weld the other pin to the ground end of the 2M cable joint;

Insert the fabricated test connector into the corresponding 2M signal port,

When the light-emitting tube head lights up, it means that the 2M signal port inserted is the signal output port. If the light-emitting tube head does not light up, it means that the 2M signal port plugged in is the signal receiving end; if it is inserted into the 2M signal output port terminal or 2M signal docking channel, but the light-emitting tube head does not light up, which means that the communication line is faulty.

The sending end of the 2M port of the communication equipment and the user equipment will continuously send a signal. However, in the traditional technology, in order to ensure the accuracy and sensitivity of the test, an external signal is usually used for testing, as shown in the background technology. The method described, therefore, has never considered directly using the signal sent by the 2M signal sending port for testing, thus forming a technical prejudice that the sending signal of the signal sending port is not suitable for testing, and the result has also led to many tests The inconvenience, the test is cumbersome, and the efficiency is low.

The inventor of the present invention just broke through and overcomes this technical prejudice, and adopts the simplest light-emitting diode to realize the test on the 2M signal sending port. Firstly, the voltage drop range of the signal sent by the 2M signal sending port is 1.5~2.0V, and the current is about 12~18 mA; while the light-emitting diode has unidirectional conductivity, when the forward voltage is applied to the light-emitting diode, it will produce spontaneous radiation. fluorescence. Since the voltage drop of the light-emitting diode is generally 1.5~2.0 V, its working current is generally 10~20mA; it can just adapt to the signal sent by the 2M signal sending port, connect the diode to the signal output port of the 2M port, and the diode will light up. Connect the diode to the signal receiving end of the 2M port, and the diode will not light up. This has brought about the following technical innovation effects: firstly, light-emitting diodes are very commonly used electronic components, and the price is extremely cheap, so it is convenient to obtain materials and low in cost; secondly, the light-emitting diodes directly use the signal of the 2M port itself as the test signal without an external power supply Or signal, so it is not limited by external operating conditions, and the operation is convenient and simple; finally, the LED test 2M signal port only needs to be operated with one hand, without the cooperation of multiple people, so it saves time and effort, reduces the workload, and improves work efficiency.

Detailed ways

Best practice:

The application method of light-emitting diodes in communication operation and maintenance first needs to provide a light-emitting diode, which includes a light-emitting tube head and two pins; the light-emitting diode is made as a test connector. According to the current 2M interface type, the most widely used is L9 type and BNC type. Combine the LED with the L9 type and BNC type cable connector: weld one pin of the LED to the core end of the 2M cable connector, and weld the other pin to the ground end of the 2M cable connector.

In actual use, it may not be combined with the cable head, and the two pins may be extended directly through the wire. However, considering the frequency of use and the effect of use, LEDs with cable heads are preferred, which can ensure the stability of the connection and the portability of the equipment; emergency treatment uses LEDs in the form of extended pins, but such simple processing requires artificially turning the light The diode is plugged into the 2M port, and there is instability in the connection, which may affect the accuracy of the test.

When in use, the auxiliary connection can also be completed through various existing auxiliary straight-through connectors, so that the light-emitting diode test connector can be applied to more situations. The auxiliary straight connectors include BNC tee connectors, BNC straight connectors, L9 straight connectors, L9 to BNC straight connectors, L9U connectors and the like.

The specific application of the above light-emitting diode test connector is as follows:

1. Connect the communication equipment with the 2M port of the user equipment through DDF, and judge the direction of the 2M channel signal:

1) For the convenience, standardization and aesthetics of wiring, the 2M ports of communication equipment are usually led to a dedicated distribution frame DDF (Digital Distribution Frame), and all access user lines are also led to the corresponding ports of the DDF, through the U The type head realizes docking; it is impossible to intuitively judge the signal direction of both parties,

2) Insert the light-emitting diode test connectors in sequence on the 2M ports on the communication equipment side and the user equipment side. When the light-emitting diode head lights up, it means that the inserted 2M signal port is a signal output port. If the light-emitting diode head does not light up , it means that the 2M signal port plugged in is the signal receiving end; and it is marked according to the orientation;

3) Finally, check: the sending end of the user equipment is docked with the receiving end of the communication equipment, the receiving end of the user equipment is connected with the sending end of the communication equipment, and the parallel connection test is performed again after connecting the U-shaped head. Then connect the test connectors to the upper and lower U-shaped heads respectively, and the light-emitting diodes will light up to confirm the connection is correct.

2. The communication equipment and the 2M port of the user equipment are directly connected through the coaxial cable, and the direction of the 2M channel signal is judged:

1) Four cables, judge the signal direction of both parties through the prepared test connectors: insert the light-emitting diode test connectors into the four cable heads in sequence, and when the light-emitting tube heads light up, it means that the inserted 2M signal port is a signal At the output end, if the light-emitting tube head does not light up, it means that the 2M signal port plugged in is the signal receiving end; and mark it according to the orientation;

2) Calibration: After the communication equipment is connected with the user equipment, conduct a parallel connection test through the tee pipe again. After inserting the test connector, both diodes are on, indicating that the connection is correct.

3. Determine the fault point of the 2M link. When there is an abnormality in the running circuit, the following methods can help to quickly locate the fault point:

1) Connect the 2M port on the communication device side with the 2M port on the user device side with a U-shaped head, and then plug in the test connector. If the LED is not on, it is judged that the user device signal has not been sent to the DDF;

2) Then insert the test connector into the signal sending port on the user equipment side, if the light-emitting diode does not light up, it is determined that the user equipment signal has not been sent to the DDF;

3) If the light-emitting diode is on, the user equipment port has signal output, and the port is normal, then the fault point lies in the faulty cable between the sending end of the user equipment and the DDF port. Check the cables.

4) After troubleshooting, use the diode to test again, and the signal from the user equipment to the DDF is normal. After connecting the U-shaped head, use the diode to conduct a parallel connection test, the connection is correct, and the 2M circuit returns to normal.

The parts not described in the present invention are the same as the prior art.

Claims (1)

1. The application method of light-emitting diode in communication operation and maintenance, it is characterized in that, comprises the following steps: 1) Provide a light-emitting diode, which includes a light-emitting tube head and two pins; 2) Make the light-emitting diode to become a test connector: provide a 2M cable connector, weld one pin of the light-emitting diode to the core end of the 2M cable connector, and weld the other pin to the ground end of the 2M cable connector; 3) Insert the fabricated test connector into the corresponding 2M signal port, 4) When the light-emitting tube head lights up, it means that the 2M signal port plugged in is the signal output end. If the light-emitting tube head does not light up, it means that the 2M signal port plugged in is the signal receiving end; if the plugged in is a 2M Signal output terminal or 2M signal docking channel, if the light-emitting tube head does not light up, it means that the communication line is faulty; 5) Communication verification: Provide an auxiliary straight-through connector, which is a U-shaped head, connect the sending end of the user equipment with the receiving end of the communication equipment, and at the same time connect the receiving end of the user equipment with the sending end of the communication equipment, and connect the two pairs of contacts respectively After the U-shaped head, perform the parallel connection test again: connect the test connectors to the two U-shaped heads respectively, and the light-emitting diodes will light up to confirm that the connection is correct; 6) Determine the fault point of the 2M link, including: A. Connect the 2M port on the communication equipment side with the 2M port on the user equipment side with a U-shaped head, and then plug in the test connector. If the light-emitting diode does not light up, it is judged that the user equipment signal has not been sent to the DDF digital distribution frame; B. Then insert the test connector into the signal sending port on the side of the user equipment. If the light-emitting diode is not on, it is determined that the signal of the user equipment has not been sent to the DDF digital distribution frame; C. If the light-emitting diode is on, the user equipment port has signal output, and the port is normal, then the fault point lies in the cable fault between the sending end of the user equipment and the DDF digital distribution frame port; check and deal with the faulty cable; D. After troubleshooting, use the diode to test again. The signal from the user equipment to the DDF digital distribution frame is normal. After connecting the U-shaped head, use the diode to perform a parallel connection test. The connection is correct and the 2M circuit returns to normal.