CN202563040U - Full series connection type device testing on-off states of network cables - Google Patents

Abstract

A full-serial device for testing the continuity of network cables belongs to the technical field of network communication. The prior art has complicated structure, high cost, inconvenient to carry, and lacks practical significance simultaneously. The utility model is characterized in that the light-emitting diode LED is connected between the a1 pin of the network cable socket of A and the positive pole of the DC power supply EC, the resistor R is connected between the a8 pin of the network cable socket of A and the negative pole of the DC power supply EC, and the a2 pin of the network cable socket of A is and a3 pins, a4 pins and a5 pins, a6 pins and a7 pins in pairs; B network cable socket b1 pins and b2 pins, b3 pins and b4 pins, b5 pins and b6 pins Pin, b7 pin and b8 pin are turned on in pairs. The utility model can test the on-off of the network cable, and can also identify each network cable between the network cable distribution frame and the terminal network cable socket accordingly.

Description

Full-serial device for testing the continuity of network cables

technical field

The invention relates to a full-serial device for testing the on-off of network cables, which can test the on-off of the network cables and can also identify each network cable between the network cable distribution frame and the terminal network cable socket, and belongs to the technical field of network communication.

Background technique

"Electronic Measurement Technology" 2004 (1) published a document entitled "Single Chip Microcomputer-Based Network Cable Tester Circuit", a network cable test device disclosed in this document consists of two parts, a main circuit and an auxiliary circuit. The main circuit is composed of AT89C51 microcontroller, test signal distribution circuit, test signal detection circuit, seven-segment digital tube display circuit, BCD decoding and driving circuit. The auxiliary circuit is composed of a diode display circuit and a loopback circuit. The test signal distribution circuit in the main circuit has the functions of line selection and power feeding. It periodically and in turn selects each of the eight core wires in the tested network cable, and feeds a test signal high level "1" to it. The test signal is transmitted to the other end of the network cable through a certain core wire, and then sent to the auxiliary circuit. The auxiliary circuit displays the loopback of each core wire in the network cable, and cooperates with the main circuit to complete the test work. After the test signal is looped back by the auxiliary circuit, it is transmitted back to the main circuit through other core wires. The test signal detection circuit periodically collects the signals on the other seven core wires in turn. If a high level "1" is collected, it means that a certain core wire is connected normally, otherwise the connection is not good. The line selection cycle of the test signal distribution circuit should ensure that the test signal detection circuit detects the signals on the other seven core lines at least once. The seven-segment digital tube display circuit displays the signal acquisition results and the on-off status of each core wire. In fact, no matter which of the eight core wires in a network cable is broken, no matter where the break is located at the connection with the crystal head or a certain position of the core wire itself, all eight core wires need to be reconnected with a new crystal head. Connect, or replace the entire network cable. And such a function that can detect which of the eight core wires in a network cable is on or off makes this network cable testing device complex in structure, high in cost, inconvenient to carry, and lacks practical significance at the same time.

Utility model content

The purpose of the utility model is to propose a network cable testing device with simple structure, low cost and easy portability, which can test the on-off condition of any core wire in a network cable through a simple operation mode of full series, so as to judge whether it is It is necessary to reconnect the crystal head or replace the network cable. For this reason, we have invented a device for testing the continuity of network cables in series.

The utility model is characterized in that, as shown in Figure 1, the light-emitting diode LED is connected between the a1 pin of the network cable socket of A and the positive pole of the DC power supply EC, and the resistor R is connected between the a8 pin of the network cable socket of A and the negative pole of the DC power supply EC. A network cable socket a2 pin and a3 pin, a4 pin and a5 pin, a6 pin and a7 pin two conduction; B network cable socket b1 pin and b2 pin, b3 pin and b4 pin, The b5 pin is connected to the b6 pin, and the b7 pin is connected to the b8 pin in pairs.

Its technical effect of the utility model is that, as shown in Figure 2, the crystal plugs at both ends of the network cable to be tested are A1 crystal plugs and B1 crystal plugs, and the eight leads of the A1 crystal plug are 1a leads, 2a leads, 3a leads, 4a leads, 5a lead, 6a lead, 7a lead, 8a lead, the eight leads of B1 crystal head are 1b lead, 2b lead, 3b lead, 4b lead, 5b lead, 6b lead, 7b lead, 8b lead, eight of the network cable to be tested The core wires are respectively connected to 1a lead and 1b lead, 2a lead and 2b lead, 3a lead and 3b lead, 4a lead and 4b lead, 5a lead and 5b lead, 6a lead and 6b lead, 7a lead and 7b lead, 8a lead and 8b leads between two pairs. Insert the A1 crystal head into the A network cable socket, and insert the B1 crystal head into the B network cable socket. At this time, the eight core wires of the network cable to be tested are connected in series, and are connected to the light-emitting diodes in the device for testing the network cable connection of the present invention. LED, DC power supply EC, and resistor R form a loop. If the eight core wires are all turned on, the light-emitting diode LED will light up. As long as one core wire of the eight core wires is disconnected, the light-emitting diode LED will not emit light. Based on this, it is judged whether the network cable under test is on or off. It can be seen that the device for testing the on-off of the network cable of the present utility model is a very simple and convenient way to test the on-off of the network cable in a full series connection. When the test network cable is disconnected, although it is impossible to test which core wire is disconnected, from the practical point of view, for this situation, it is necessary to remove the original crystal head and reconnect a new crystal head, or use a new one. The network cable replaces the entire faulty network cable. While achieving simple and convenient testing, since the device is composed of five components, a total of light-emitting diode LED, A network cable socket, DC power supply EC, resistor R and B network cable socket, through simple electrical connections, the structure is simplified and the cost is reduced. Significantly reduced, small size, light weight, very convenient to carry and use.

A side effect of the utility model is that it can be used to identify each network cable between the network cable distribution frame and the terminal network cable sockets. Since the crystal heads at one end of each network cable are concentrated at the network cable distribution frame, the other end of each network cable is connected to a terminal network cable socket respectively. These terminal network cable sockets are far away from the network cable distribution frame and their positions are different. Which terminal network cable socket is connected to the other end of the network cable connected to a certain crystal head at the distribution frame. This review task can be easily accomplished by adopting the device for testing the continuity of the network cable of the present invention, which is described in detail as follows. Take a good, short end of the network cable connected with crystal heads, one crystal head is inserted into a terminal network cable socket, and the other crystal head is inserted into the B network cable socket in the device for testing network cable on-off of the utility model. Hold the other part of the device for testing the on-off of the network cable of the present invention, that is, the part containing the A network cable socket to the network cable distribution frame, and insert the crystal heads of each end of the multiple network cables located there into the A network cable socket one by one. If the LED is on, it can be confirmed that the terminal network cable socket connected to the B network cable socket is the two ends of a network cable. In the same way, complete the identification of all network cables.

Description of drawings

Fig. 1 is a schematic structural diagram of a device for testing network cable continuity of the present invention, and this figure is also used as a summary drawing. Fig. 2 is a schematic view showing the on-off state of the network cable to be tested by using the device for testing the on-off of the network cable of the present invention.

Detailed ways

The specific implementation of the utility model is as follows, as shown in Figure 1, the light-emitting diode LED is connected between the a1 pin of the A network cable socket and the positive pole of the DC power supply EC. The light emitting diode LED gauge is 3 mm. The EC voltage of the DC power supply is 3V, and a button battery of the model LR626 is used. The resistor R is connected between the a8 pin of the A network cable socket and the negative pole of the DC power supply EC. The resistance value of the resistor R is 100Ω, and the power is 1/4W. The a2 pin and a3 pin, a4 pin and a5 pin, a6 pin and a7 pin of the network cable socket are connected in pairs. B network cable socket b1 and b2 pins, b3 and b4 pins, b5 and b6 pins, b7 and b8 pins are connected in pairs.

Claims (2)

1. a full tandem is tested the device of netting twine break-make; It is characterized in that; LED is connected between A netting twine socket a1 pin and the direct supply EC positive pole; Resistance R is connected between A netting twine socket a8 pin and the direct supply EC negative pole, A netting twine socket a2 pin and a3 pin, a4 pin and a5 pin, a6 pin and the conducting in twos of a7 pin; B netting twine socket b1 pin and b2 pin, b3 pin and b4 pin, b5 pin and b6 pin, b7 pin and the conducting in twos of b8 pin.

2. the device of full tandem test netting twine break-make according to claim 1 is characterized in that the LED specification is 3 millimeters; Direct supply EC voltage is 3V, and adopting model is the button cell of LR626; The resistance R resistance is 100 Ω, and power is 1/4W.

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