CN102707184B - Portable coaxial cable tester - Google Patents

Abstract

The invention discloses a portable coaxial cable tester and relates to the technical field of electronic measurement devices. The tester comprises coaxial cable joints, a power supply, a single-pole double-throw switch, a buzzer and an indicator light, wherein a positive pole and a negative pole of the power supply are in a series connection with a plurality of the coaxial cable joints, a negative pole of a power supply input end of the buzzer is electrically connected with the negative pole of the power supply, and a positive pole of the power supply input end of the buzzer is electrically connected with the single-pole double-throw switch. By means of the tester, broken circuit and short circuit tests of the coaxial cable can be completed merely by one worker, the operation is simple and convenient, test results are clear, the practicability is high, and the tester is simple in structure, low in manufacturing cost, and has an excellent popularization and usage prospect.

Description

A Portable Coaxial Cable Tester

technical field

The invention relates to the technical field of electronic measuring devices, in particular to a portable coaxial cable tester.

Background technique

At this stage, when testing coaxial cables, most of them use multimeters for testing. Testing with multimeters requires two people to cooperate with each other. When one person operates, the test is often inconvenient and the results are inaccurate. The 2M connecting line is a communication device. It is an indispensable part of interconnection, and its quality directly affects the quality of equipment signal transmission. In this information age, which requires higher and higher communication requirements, improving the quality of coaxial cables has become a more important issue at present. work content.

Contents of the invention

The technical problem to be solved by the present invention is to provide a portable coaxial cable tester, which is convenient, simple, accurate and quick to test whether the outer conductor and core wire in the coaxial cable are conducting or short-circuited.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a portable coaxial cable tester, which is characterized in that it includes a coaxial cable connector, a power supply, a single-pole double-throw switch, a buzzer and an indicator light, and the positive pole of the power supply The first path is electrically connected to the shell of the first coaxial cable joint, the shells of the first to Nth coaxial cable joints are connected in series in sequence, and the second path of the positive pole of the power supply is connected to the first coaxial cable through one of the SPDT switches. The core wires of the connectors are electrically connected, the core wires of the first to Nth coaxial cable connectors are connected in series in sequence, the first path of the negative pole of the power supply passes through the indicator light D1 and the core wires of the N+1th coaxial cable connectors are electrically connected, and the Nth The core wire of the +1 coaxial cable connector is connected in series to the core wire of the 2N coaxial cable connector in sequence, the second path of the negative pole of the power supply passes through the indicator light D2 and the shell of the N+1 coaxial cable connector is electrically connected, and the N+ The shell of the 1st coaxial cable connector is connected in series to the shell of the 2nd coaxial cable connector in sequence, the negative pole of the power input end of the buzzer is electrically connected with the negative pole of the power supply, the positive pole of the power input end of the buzzer is connected with the other pole of the single-pole double-throw switch All the way electrical connection.

A further solution of the present invention is that: the indicator lights D1 and D2 are light emitting diodes.

The beneficial effect produced by adopting the above-mentioned technical scheme is: the coaxial cable connector on the tester can be a male connector or a female connector, or a mix and match of a male connector and a female connector, and the model of the coaxial cable connector It can be commonly used, or it can be a mix and match of commonly used models and special models; connect one end of the prepared coaxial cable with a connector to the appropriate connector on the left side of the tester, and the other end of the coaxial cable to the right side of the tester. When testing whether the outer conductor and core wire of the coaxial cable are disconnected, control the single-pole double-throw switch to make the second path of the positive pole of the power supply conduct. If the indicators D1 and D2 are both on, it means that the same The outer conductor and core wire in the coaxial cable are not broken. If the indicator light D1 is on and the indicator light D2 is off, it means that the core wire in the coaxial cable is intact and there is an open circuit on the outer conductor. If the indicator light D1 is off, the indicator light When D2 is on, it means that there is an open circuit on the core wire in the coaxial cable, and the outer wire is intact; when testing whether there is a short circuit between the outer wire and the core wire of the coaxial cable, control the single-pole double-throw switch to make it connect with the buzzer. The positive pole of the power supply is connected all the way. If the buzzer sounds, it means that there is a short circuit between the outer wire and the core wire of the coaxial cable. At this time, the indicators D1 and D2 are both on. If the buzzer does not sound, it means There is no short circuit between the outer conductor and the core wire of the coaxial cable. At this time, the indicator light D2 is on, and the indicator light D1 is off.

The open circuit and short circuit test of the coaxial cable can be completed by using the tester only by one person, the operation is simple, convenient, accurate and fast, the test results are clear at a glance, and the practicability is strong; in addition, the tester has a simple structure and low manufacturing cost Low, with good prospects for promotion and use. the

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic block diagram of the present invention;

Fig. 2 is a schematic cross-sectional structure diagram of a coaxial cable;

Among them: 1. Outer insulating layer 2. Outer wire 3. Inner insulating layer 4. Core wire.

Detailed ways

As shown in Figure 1, a portable coaxial cable tester includes a coaxial cable connector, a power supply, a single-pole double-throw switch, a buzzer and an indicator light. The first path of the positive pole of the power supply is electrically connected to the shell of the first coaxial cable connector, and the shells of the first to Nth coaxial cable joints are connected in series in sequence, and the second path of the positive pole of the power supply is connected to the first path through the single pole double throw switch. The core wires of the coaxial cable connectors are electrically connected, and the core wires of the first to Nth coaxial cable connectors are connected in series; , the core wire of the N+1th coaxial cable connector is connected in series to the core wire of the 2Nth coaxial cable connector in sequence, the second path indicator light D2 of the negative pole of the power supply is electrically connected with the shell of the N+1th coaxial cable connector, The shell of the N+1 coaxial cable connector is connected in series to the shell of the 2N coaxial cable connector in sequence; the negative pole of the power input end of the buzzer is electrically connected with the negative pole of the power supply, and the positive pole of the power input end of the buzzer is connected Another electrical connection to the switch.

The function realized by the single pole double throw switch can also be realized by using two single pole single throw switches, and the indicator lights D1 and D2 can be selected light-emitting diodes, because the power consumption of the light-emitting diodes is small, the indicator lights D1 and D2 can also be used Ordinary light bulbs; the above-mentioned devices can also be selected from other devices, as long as the above-mentioned functions can be realized.

The coaxial cable connector on the tester can be a male connector or a female connector, or a mix and match of the male connector and the female connector. The type of the coaxial cable connector can be a commonly used model or a commonly used Models and special models are mixed and matched, such as 1M connectors, 2M connectors, etc., to meet the connection requirements of various coaxial cables. The schematic diagram of the cross-sectional structure of the coaxial cable is shown in Figure 2.

Connect one end of the prepared coaxial cable with a connector to the appropriate connector on the left side of the tester, and connect the other end of the coaxial cable to the appropriate connector on the right side of the tester. When there is an open circuit in the line, control the SPDT switch to make the second positive pole of the power supply conduct. If the indicator lights D1 and D2 are both on, it means that the outer conductor and core wire in the coaxial cable are not open. If the indicator light D1 is on , the indicator light D2 is not on, it means that the core wire in the coaxial cable is intact, and there is an open circuit on the outer wire. The wires are intact.

When testing whether there is a short circuit between the outer conductor and the core wire of the coaxial cable, control the single-pole double-throw switch to make it conduct with the positive pole of the buzzer power supply. If the buzzer sounds, it means that the coaxial cable is There is a short circuit between the outer conductor and the core wire, at this time the indicators D1 and D2 are both on, if the buzzer does not sound, it means that there is no short circuit between the outer conductor and the core wire of the coaxial cable, and the indicator D2 is on at this time , the indicator light D1 is off.

The open circuit and short circuit test of the coaxial cable can be completed by using the tester only by one person, the operation is simple, convenient, accurate and fast, the test results are clear at a glance, and the practicability is strong; in addition, the tester has a simple structure and low manufacturing cost Low, with good prospects for promotion and use. the

Claims (2)

1. A portable coaxial cable tester is characterized in that it comprises a coaxial cable joint, a power supply, a single-pole double-throw switch, a buzzer and an indicator light, and the first road of the positive pole of the power supply is electrically connected to the shell of the first coaxial cable joint. connection, the shells of the first to Nth coaxial cable connectors are connected in series in sequence, the second path of the positive pole of the power supply is electrically connected to the core wire of the first coaxial cable connector through one of the single-pole double-throw switches, and the first to Nth coaxial cable The core wires of the coaxial cable connectors are connected in series in sequence, the first path of the negative pole of the power supply is electrically connected to the core wire of the N+1 coaxial cable connector through the indicator light D1, and the core wire of the N+1 coaxial cable connector is connected to the 2N The core wires of the coaxial cable connectors are connected in series in sequence, the second path of the negative pole of the power supply passes through the indicator light D2 and is electrically connected to the shell of the N+1 coaxial cable connector, and the shell of the N+1 coaxial cable connector is connected to the 2N coaxial cable The shells of the joints are sequentially connected in series, the negative pole of the power input end of the buzzer is electrically connected with the negative pole of the power supply, and the positive pole of the power input end of the buzzer is electrically connected with the other path of the SPDT switch. 2. A portable coaxial cable tester according to claim 1, characterized in that said indicator lights D1 and D2 are light emitting diodes.

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