CN209460342U - A Fast Twisted-Pair Cable Continuity Tester - Google Patents

Abstract

The utility model provides a fast twisted-pair cable continuity tester, which is characterized in that it comprises: a near-end testing device and a far-end testing device; the near-end testing device includes a DC power supply, a first crystal head and a near-end connecting wire The far-end test device includes a second crystal head, a far-end connecting wire, four resistors and four light-emitting diodes, wherein the near-end connecting wire includes eight near-terminal wires, which are used to connect to the first crystal head and the DC power supply. Positive and negative poles, the remote connection line includes four sets of remote terminal wire groups connected in series with resistors and light-emitting diodes in sequence, thus forming four continuity test links, and the two ends of each continuity test link are connected to the second Crystal head, so that when the two ends of the twisted-pair cable to be tested are respectively connected to the near-end test device and the far-end test device, four branch circuit loops are formed, and then through the light-emitting diodes in each on-off test link Light and dark to indicate the on-off state of the twisted-pair cable.

Description

A Fast Twisted-Pair Cable Continuity Tester

technical field

The utility model relates to a fast twisted-pair cable continuity tester.

Background technique

Twisted pair cable is a kind of general wiring made of two mutually insulated wires intertwined with each other according to certain specifications. It belongs to the transmission medium of information communication network and is usually used for integrated wiring of computer network.

During the wiring process of the computer network, testers need to test the continuity of each twisted-pair cable, so as to ensure the communication quality of the computer network. The usual measurement tool is a twisted-pair cable continuity tester.

At present, the twisted-pair cable continuity testers commonly used in the market all use the ordinary clock sequence to turn on the lights to indicate the continuity of the twisted-pair cable. It takes up to four hours for testers to test a twisted-pair cable. to five seconds, the test is less efficient. In addition, the continuity tester is generally divided into a near-end device and a remote device. During use, two testers are required to be located at both ends of the twisted-pair cable to be tested, and they must pay attention to and feed back the measurement conditions of the continuity tester to each other. Measure the on-off status of the twisted-pair cable to be tested. If the length of the twisted-pair cable is too long, it may cause difficulty or delay in feedback information between the two testers (for example, the two ends of the twisted-pair cable to be tested are located on different floors. time), so that the tester makes a wrong judgment on the on-off condition of the twisted-pair cable to be tested, resulting in inaccurate on-off test results and affecting work efficiency and wiring quality.

Utility model content

In order to solve the above problems, the utility model adopts the following technical solutions:

The utility model provides a fast on-off tester for twisted-pair cables, which is used for testing the on-off of twisted-pair cables, and is characterized in that it comprises: a near-end testing device and a far-end testing device; a near-end testing device It includes a DC power supply, a first crystal head and a near-end connecting wire; the remote test device includes a second crystal head, a remote connecting wire, four resistors and four light-emitting diodes, wherein the near-end connecting wire includes eight near-terminal wires , one end of each near-terminal wire is connected to the first crystal head, the other end of four of the near-terminal wires is connected to the positive pole of the DC power supply, and the other end of the other four near-terminal wires is connected to the negative pole of the DC power supply , the remote connection line includes four sets of remote terminal wire groups, the remote terminal wire group includes two corresponding remote terminal wires, and the remote terminal wires in the remote terminal wire group are connected in series with a resistor and a light-emitting diode in sequence, so that Four continuity test links are formed, and both ends of each continuity test link are connected to the second crystal head, so that when the two ends of the twisted-pair cable to be tested are respectively connected to the near-end test device and the far-end When testing the device, the DC power supply, the near-end connection line, the twisted pair cable and the continuity test link are connected in sequence to form four branch circuit loops, and then the twisted pair is indicated by the brightness of the light-emitting diode in each continuity test link The on-off status of the cable.

The utility model provides a fast twisted-pair cable on-off tester, which can also have such a feature, wherein, a switch device is connected in series between the positive pole of the DC power supply in the near-end test device and the near-end connection line, and the switch The device is used to control the on-off of the branch circuit loop during the test, thereby controlling the switch of the fast twisted-pair cable continuity tester.

The utility model provides a fast twisted-pair cable on-off tester, which can also have such a feature, wherein the near-end testing device also includes a near-end shielding wire and a first shielding diode, and one end of the near-end shielding wire is connected to To the positive pole of the DC power supply, the other end is connected to the first crystal head, the first shielding diode is connected in series between the negative pole of the DC power supply and the near-end connection line, and the remote test device also includes the far-end shielding line, shielding resistance and the second Two shielding diodes, the shielding resistance and the shielding light-emitting diode are connected in series to the shielding wire at the far end, thereby forming a shielding test link, the shielding test link and the continuity test link are connected in parallel, and one end of the shielding test link is connected to the second crystal The other end is connected with four second shielding diodes, and the second shielding diodes are connected in parallel and further connected to each continuity test link.

The utility model provides a fast twisted-pair cable on-off tester, which can also have such a feature, wherein, each near-terminal line is connected with the first crystal head through the TIA-568B standard, and connected with the positive pole of the DC power supply. The colors of the connected near-terminal wires are white-blue, white-orange, white-green and white-brown respectively, and the colors of the near-terminal wires connected with the negative pole of the DC power supply are blue, orange, green and brown respectively.

The utility model provides a fast twisted-pair cable on-off tester, which can also have such a feature, wherein, each remote terminal wire is connected with the second crystal head through the TIA-568B standard, and the corresponding remote terminal The colors of the lines are white-blue and blue, white-orange and orange, white-green and green, and white-brown and brown.

The utility model provides a fast twisted-pair cable continuity tester, which can also have such a feature, wherein, the first crystal head and the second crystal head are RJ45 crystal heads.

Functions and Effects of Utility Models

According to the fast twisted-pair cable continuity tester of the present utility model, due to the electrical transmission properties of the twisted-pair cable itself and the two ends of the twisted-pair cable to be tested are respectively connected to the near-end testing device and the far-end testing device during the test process. end test device, so in the test process, the near-end test device, twisted-pair cable and far-end test device can form four branch circuit loops. To judge the on-off condition of the twisted-pair cable. Because the theoretical transmission speed of electricity is close to the speed of light, when the tester turns on the switch device, the circuit loop can be energized instantaneously, and then the test can be completed instantly, which is greatly improved compared with the on-off tester that uses the clock generator to test the lights one by one. Save test time and improve work efficiency.

In addition, since the light-emitting diodes are all set on the far-end test device, the near-end test device is only used to provide power, so during the test, the tester only needs to observe the test information of the remote test device to judge whether the twisted-pair cable is on or off. The situation avoids the test error caused by the length of the twisted pair cable being too long or the tester is too far away, improves the test accuracy of the fast twisted pair cable continuity tester and is more convenient to use.

Description of drawings

Fig. 1 is the structural representation of the near-end testing device of the utility model embodiment 1;

Fig. 2 is a schematic structural view of the remote testing device of Embodiment 1 of the utility model;

Fig. 3 is the schematic circuit diagram of the fast twisted-pair cable continuity tester of the utility model embodiment 1;

Fig. 4 is a schematic structural view of a proximal testing device according to Embodiment 2 of the present invention;

Fig. 5 is a schematic structural view of a remote testing device according to Embodiment 2 of the present invention;

Fig. 6 is the schematic circuit diagram of the fast twisted-pair cable on-off tester of the utility model embodiment 2;

Fig. 7 is a schematic structural diagram of a fast twisted pair cable continuity tester according to Embodiment 2 of the present invention.

Detailed ways

In order to make the technical means, creative features, goals and effects of the utility model easy to understand, the utility model fast twisted pair cable on-off tester will be described in detail below in conjunction with the accompanying drawings.

<Example 1>

FIG. 1 is a schematic structural view of a proximal testing device according to Embodiment 1 of the present invention.

FIG. 2 is a schematic structural view of the remote testing device in Embodiment 1 of the present invention.

Fig. 3 is a schematic circuit diagram of the fast twisted-pair cable continuity tester in Embodiment 1 of the present invention.

As shown in FIGS. 1 to 3 , the fast twisted pair cable continuity tester 100 in Embodiment 1 includes a near-end testing device 10 and a remote testing device 20 .

The near-end testing device 10 includes a DC power source 101 , a first crystal plug 102 , a near-end connecting wire 103 and a switch device 104 .

The first crystal head 102 is an RJ45 crystal head.

The near-end connecting wire 103 includes eight near-terminal wires, and each near-terminal wire is connected to the DC power supply 101 and the first crystal head 102 through the TIA-568B standard. The colors of the near-terminal wires are white-blue, white-orange, White-green, white-brown, blue, orange, green and brown, one end of each near-terminal line is connected to the first crystal head 102, the other end of the near-terminal line of white-blue, white-orange, white-green and white-brown connected in parallel to form a first parallel terminal, which is then connected to the positive pole of the DC power supply 101, and a switching device 104 is connected in series between the first parallel terminal and the positive pole of the DC power supply 101, blue, orange, green and brown The other end of the wire near the terminal is connected to the negative pole of the DC power supply 101 .

The remote testing device 20 includes a second crystal head 201 , a remote connecting wire 202 , four resistors 203 and four LEDs 204 .

The second crystal head 201 is an RJ45 crystal head.

The remote connecting wire 202 includes four groups of remote terminal wires, each group of remote terminal wires includes two corresponding remote terminal wires, and each remote terminal wire is connected to the second crystal head through the TIA-568B standard, corresponding to The colors of the remote terminal wires are white-blue and blue, white-orange and orange, white-green and green, and white-brown and brown.

A resistor 203 and a light emitting diode 204 are sequentially connected in series between the remote terminal wires in the remote terminal wire group, thereby forming four continuity test links, and the two ends of each continuity test link are connected to the second crystal Head 201.

The connection method of each continuity test link is the same. The following takes the white blue and blue remote terminal wire sets as an example to illustrate the specific connection method of the continuity test link:

One end of the white-blue far terminal wire is connected to the second crystal head 201, the other end is connected in series with a resistor 203 and connected to a pin of the light emitting diode 204, and one end of the blue far terminal wire is connected to the other end of the light emitting diode 204. One pin and the other end are connected to the crystal head 201, thereby forming a continuity test link.

The specific working method of the fast twisted-pair cable continuity tester 100 is illustrated below in conjunction with the accompanying drawings:

First, the two ends of the twisted-pair cable to be tested are respectively connected to the near-end test device 10 and the far-end test device 20, so that the DC power supply 101, the near-end connecting wire 102, the twisted-pair cable and the continuity test link are sequentially Connect to form four branch current circuit loops, then open the switch device 104 to energize the DC circuit loop, and then indicate the on-off state of the twisted-pair cable according to the brightness of the light-emitting diode 204 in each on-off test link, when the light-emitting diode 204 glows , it indicates that the on-off test link corresponding to the LED 204 is normal, that is, it indicates that the corresponding line in the twisted-pair cable to be tested is in the through state. When the LED 204 does not emit light, it indicates that the LED 204 corresponds to If the continuity test link is abnormal, it indicates that the line corresponding to the twisted-pair cable to be tested is disconnected.

<Example 2>

Fig. 4 is a schematic structural diagram of a proximal testing device according to Embodiment 2 of the present invention.

Fig. 5 is a schematic structural diagram of a remote testing device according to Embodiment 2 of the present invention.

Fig. 6 is a schematic circuit diagram of a fast twisted-pair cable continuity tester according to Embodiment 2 of the present invention.

Fig. 7 is a schematic structural diagram of a fast twisted pair cable continuity tester according to Embodiment 2 of the present invention.

In this second embodiment, the same symbols are assigned to the same structures, methods, and conditions as those in the first embodiment, and the same descriptions are omitted.

In Embodiment 2, the working mode of the fast twisted-pair cable continuity tester 100 is the same as that of Embodiment 1, but the structure is different, specifically:

The near-end testing device 10 also includes a near-end shielding wire 105 and a first shielding diode 106, one end of the near-end shielding wire 105 is connected between the first parallel terminal and the switch device 104, and the other end is connected to the first crystal head 102 , the other ends of the blue, orange, green and brown near-terminal wires are connected together to form a second parallel terminal, which is then connected to the negative pole of the DC power supply 101, and between the second parallel terminal and the negative pole of the DC power supply 101 A first shielding diode 106 is also connected in series.

The remote test device 20 also has a shielded test link, which includes a remote shielded wire 205 , a shielded resistor 206 and a shielded light emitting diode 207 connected in sequence.

The following describes the specific connection method of the shielding test link:

One end of the far-end shielding wire 205 is connected to the second crystal head 201 and is connected in series with a shielding resistor 206 and a shielding light-emitting diode 207 in sequence, and the other end of the far-end shielding wire 205 is connected with four second shielding diodes 208 connected in parallel and respectively Connect to each continuity test link such that the shield test link is connected in parallel with the continuity test link.

During use, the DC power supply 101, the near-end shielded wire 105, the twisted-pair cable, the shielded test link and the continuity test link form a shielded circuit loop.

Function and effect of embodiment

According to the fast twisted-pair cable continuity tester of the above-mentioned embodiment, due to the electrical transmission properties of the twisted-pair cable itself and the two ends of the twisted-pair cable to be tested are respectively connected to the near-end testing device and the far-end testing device during the test. end test device, so in the test process, the near-end test device, twisted-pair cable and far-end test device can form four branch circuit loops. To judge the on-off condition of the twisted-pair cable. Because the theoretical transmission speed of electricity is close to the speed of light, when the tester turns on the switch device, the circuit loop can be energized instantaneously, and then the test can be completed instantly, which is greatly improved compared with the on-off tester that uses the clock generator to test the lights one by one. Save test time and improve work efficiency.

In addition, since the light-emitting diodes are all set on the far-end test device, the near-end test device is only used to provide power, so during the test, the tester only needs to observe the test information of the remote test device to judge whether the twisted-pair cable is on or off. The situation avoids the test error caused by the length of the twisted pair cable being too long or the tester is too far away, improves the test accuracy of the fast twisted pair cable continuity tester and is more convenient to use.

Since the near-end test device also includes a near-end shielded wire and a first shielded diode, the far-end test device also includes a far-end shielded wire, a shielding resistor, and a shielded light-emitting diode, thereby forming a shielded test link, and then forming a shielded circuit loop , so when the shielding circuit loop is energized during the test, the tester can judge the stability of the current in the fast twisted pair cable continuity tester according to the light and shade of the shielding LED, so that the fast twisted pair cable continuity tester higher security.

Since each near terminal wire is connected to the first crystal head through the TIA-568B standard, and each far terminal wire is connected to the second crystal head through the TIA-568B standard, therefore, in the fast twisted pair cable continuity test During the installation and use of the tester, the tester can clearly connect the circuit according to the wire color of each sub-wire, which makes the installation and use of the fast twisted pair cable continuity tester more convenient.

Since the first crystal head and the second crystal head are RJ45 crystal heads, the RJ45 crystal head has good conduction performance, so the electrical continuity between the sub-lines can be realized more quickly during the test process, making the test speed faster Faster and more accurate test results.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

For example, in the above-mentioned embodiment, the proximal terminal wires are all connected with the first crystal plug through the TIA-568B standard, and the far terminal wires are all connected with the second crystal plug through the TIA-568B standard. In the fast twisted pair provided by the utility model In the cable continuity tester, each sub-wire can also be connected through the TIA-568A standard, so as to adapt to different connection requirements.

Claims (6)

1. A fast twisted-pair cable continuity tester is used to test the continuity of twisted-pair cables, it is characterized in that, comprising: near-end test set and far-end test set; The near-end testing device includes a DC power supply, a first crystal plug and a near-end connecting wire; The remote test device includes a second crystal head, a remote connection wire, four resistors and four light emitting diodes, Wherein, the near-end connecting wires include eight near-terminal wires, one end of each of the near-terminal wires is connected to the first crystal plug, and the other ends of four of the near-terminal wires are connected to the the positive pole of the DC power supply, the other ends of the other four of the near-terminal wires are connected to the negative pole of the DC power supply, The remote connecting wires include four groups of remote terminal wires, the remote terminal wire groups include two corresponding remote terminal wires, and the remote terminal wires in the remote terminal wire groups are sequentially connected in series with one The resistance and one of the light emitting diodes form four on-off test links, and the two ends of each on-off test link are connected to the second crystal head, so that when the to-be-tested When the two ends of the twisted-pair cable are respectively connected to the near-end test device and the remote test device, the DC power supply, the near-end connecting wire, the twisted-pair cable and the continuity test chain The circuits are sequentially connected to form four branch circuit loops, and the on-off state of the twisted-pair cable is indicated by the brightness of the light-emitting diodes in each on-off test link. 2. The fast twisted-pair cable continuity tester according to claim 1, characterized in that: Wherein, a switch device is connected in series between the positive pole of the DC power supply and the near-end connection line in the near-end test device, and the switch device is used to control the on-off of the branch circuit during the test process. , so as to control the switch of the fast twisted-pair cable continuity tester. 3. The fast twisted-pair cable continuity tester according to claim 1, characterized in that: Wherein, the near-end testing device also includes a near-end shielding wire and a first shielding diode, one end of the near-end shielding wire is connected to the positive pole of the DC power supply, and the other end is connected to the first crystal head, so The first shielding diode is connected in series between the negative pole of the DC power supply and the near-end connection line, The remote test device also includes a remote shielded wire, a shielded resistor, and a shielded light-emitting diode, and the remote shielded wire is sequentially connected in series with the shielded resistor and the shielded light-emitting diode, thereby forming a shielded test link, The shielding test link is connected in parallel with the continuity test link, one end of the shielding test link is connected to the second crystal head, and the other end is connected to four second shielding diodes, and the second shielding Diodes are connected in parallel and further connected to each of said continuity test links. 4. The fast twisted-pair cable continuity tester according to any one of claims 1 to 3, characterized in that: Wherein, each of the near-terminal wires is connected to the first crystal head through the TIA-568B standard, The colors of the near-terminal wires connected to the positive pole of the DC power supply are white-blue, white-orange, white-green and white-brown, The colors of the near-terminal wires connected to the negative pole of the DC power supply are blue, orange, green and brown respectively. 5. The fast twisted-pair cable continuity tester according to any one of claims 1 to 3, characterized in that: Wherein, each of the remote terminals is connected to the second crystal head through the TIA-568B standard, The colors of the corresponding remote terminals are white-blue and blue, white-orange and orange, white-green and green, and white-brown and brown. 6. The fast twisted-pair cable continuity tester according to any one of claims 1 to 3, characterized in that: Wherein, the first crystal head and the second crystal head are RJ45 crystal heads.