CN205484640U - Simple and easy net twine tester - Google Patents

Abstract

The utility model relates to a simple and easy net twine tester comprises an universal meter, two 8 terminal rows and two RJ45 interfaces, the gear of universal meter dial to the diode and measure the gear, it is parallelly connected to together and on being connected to a RJ45 interface through the connecting wire that 8 groups of one of them 8 terminal row correspond the terminal, on another 8 terminal rows were connected to a RJ45 interface, on the net twine that has a RJ45 plug with both ends inserted two RJ45 interfaces, " + " and " - " utmost point of universal meter inserted respectively on two arbitrary ports that pass through those 8 terminal rows that the connecting wire connected in parallel. Compared with the prior art, the utility model discloses the contract test time of short network line reduces because lack the unable actual difficulty of measuring the net twine that the net twine tester leads to, strives for the valuable time with resuming operation for the equipment debugging. Simple and easy net twine tester preparation is simple relatively, the component that can make full use of easily acquires, and the preparation time is short, practical application is effective.

Description

A simple network cable tester

technical field

The invention relates to a weak current test device, in particular to a simple network cable tester made by using a multimeter, a terminal block and an RJ45 interface.

Background technique

At present, most newly built and renovated substations are smart substations, and network cables are mostly used for connection and communication between devices, and twisted pair cables are mainly used for network cables. The twisted pair uses a pair of mutually insulated metal wires twisted together to resist part of the external electromagnetic wave interference. Twisting two insulated copper wires with each other at a certain density can reduce the degree of signal interference, and the electric waves radiated by each wire during transmission will be canceled by the electric waves emitted by the other wire. This is where the name "twisted pair" comes from. Twisted-pair wires are generally made of two 22-26 insulated copper wires wound with each other. In actual use, twisted-pair wires are wrapped in an insulated cable sleeve by multiple pairs of twisted-pair wires. A typical twisted pair is four pairs.

After the network cable is made, it is necessary to use a dedicated network cable tester to test whether the network cable is conductive. However, during the on-site work of the substation, there are sudden network data interruptions and there is no network tester around. At this time, how to use the multimeter, terminal block and RJ45 interface in the toolbox to make a simple network cable tester It is a technical problem to be solved urgently to test the network cable and eliminate the network failure caused by the interruption of the network cable.

Contents of the invention

In order to solve the situation that there is a sudden network data interruption during the on-site work of the substation and there is no network tester around, how to use the multimeter, terminal block and RJ45 interface in the toolbox to make a simple network cable tester, and carry out The test of the network cable eliminates the technical problem of network failure caused by the interruption of the network cable. The invention discloses a simple network cable tester. The technical solution adopted is:

A simple network cable tester is characterized in that it consists of a multimeter, two 8-piece terminal blocks and two RJ45 interfaces, the gear of the multimeter is set to the diode measurement gear, and the 8-piece of one 8-piece terminal block is The corresponding terminals of the group are connected together in parallel and connected to one RJ45 interface, and the other 8 pieces of terminal blocks are connected to one RJ45 interface. Insert the network cable with RJ45 plugs at both ends into the two RJ45 interfaces, and the "+" of the multimeter " and "—" poles are respectively connected to any two ports of the 8-piece terminal block that are not connected in parallel through connecting wires.

Further, the eight independent wire cores in the network cable are divided into 4 groups, and every two lines are a group, and the on-off measurement of each group of lines is carried out respectively. When the multimeter emits a buzzer sound, it means There is no problem with this group of lines, otherwise there is a problem.

Compared with the prior art, the present invention shortens the test time of the network cable, reduces the practical difficulty of not being able to measure the network cable due to the lack of a network cable tester, and buys precious time for equipment debugging and recovery operation. The simple network cable tester is relatively simple to make, and can make full use of easily obtained components, with short production time and effective practical application.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

detailed description

Referring to Figure 1, a simple network cable tester is composed of a multimeter 13, two 8-piece terminal blocks and two RJ45 interfaces. The row is divided into the first 8-piece terminal block 11, the second 8-piece terminal block 12, and the two RJ45 interfaces are divided into the first RJ45 interface 14 and the second RJ45 interface 15; the 8 groups of corresponding terminals of the first 8-piece terminal block 11 pass through The connecting wires are connected together in parallel and connected to the first RJ45 interface 14, the second 8-piece terminal block 12 is connected to the second RJ45 interface 15, and the network cable 100 with RJ45 plugs at both ends is inserted into the first RJ45 interface 14 and the second RJ45 interface 14. Two RJ45 ports on 15. The "+" and "-" poles of the multimeter are respectively connected to any two ports of the second 8-piece terminal block 12 . The multimeter can be used to detect the on-off characteristics of the circuit. When the multimeter is turned to the diode measurement gear (buzzing gear), the multimeter will beep in the closed circuit, and the multimeter will beep in the disconnected circuit. No sound is produced. We regard the eight independent wire cores in the network cable as eight power lines, and divide them into 4 groups. Every two lines form a group, and measure the continuity of each group of lines. Indicates that there is no problem with this group of lines. Otherwise, there is a problem with this group of lines. Check each group of lines in turn to find out the problems with the network cables. Check whether the network cable head is qualified, whether there is any virtual pressure on the network cable head, compact or cut off the network cable head and do it again. When using a multimeter to test the network cable, there is no sound in the 4 sets of tests. This may be to check that the network cable is not the same. The root network cable or the network cable is physically damaged by the outside world. Divide the eight independent wire cores in the network cable into 4 groups, and every two lines form a group, and measure the on-off of each group of lines respectively. When the multimeter emits a buzzer, it means that this group of lines There is no problem, otherwise there is a problem.

Claims (1)

1. A simple network cable tester, characterized in that: it consists of a multimeter, two 8-piece terminal blocks and two RJ45 interfaces, the gear of the multimeter is dialed to the diode measurement gear, and one of the 8-piece terminal blocks The 8 sets of corresponding terminals are connected together in parallel and connected to one RJ45 interface, and the other 8 pieces of terminal blocks are connected to one RJ45 interface. Insert the network cable with RJ45 plugs at both ends into the two RJ45 interfaces. The "+" and "-" poles are respectively connected to any two ports of the 8-piece terminal block that are not connected in parallel through the connecting wire.