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Tester for single-ended connected twisted pair crosstalk hunting of cable

A tester, single-ended technology, applied in the direction of continuity test, electrical connection test, instrument, etc., can solve the problems of reducing the work efficiency of testers and cumbersome test steps, and achieve the effect of saving time and cost and improving work efficiency

Inactive Publication Date: 2020-06-19
林东航
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing cable tester test whether the continuity is normal requires both ends of the cable to be connected to the test instrument, the cable core must be more than 2 cores, and can only test whether the current cable continuity is normal, and where If there is a problem with one wire core, it is impossible to judge which end of the wire core has the problem, resulting in cumbersome test steps and reducing the work efficiency of testers

Method used

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  • Tester for single-ended connected twisted pair crosstalk hunting of cable
  • Tester for single-ended connected twisted pair crosstalk hunting of cable
  • Tester for single-ended connected twisted pair crosstalk hunting of cable

Examples

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Effect test

Embodiment 1

[0059] like Figure 12-15 Shown is a schematic diagram of Embodiment 1 of the present invention, including an MCU module, a cable single-ended test module, a power module and a display module diagram. The MCU module controls the cable single-end test module, and displays the result to the display module. The power module is electrically connected with the MCU module for providing power.

[0060] The operating principle of the cable single-ended test module:

[0061]1. Initialization: Due to the interference of PCB wiring and electronic components, when the cable is not connected, there is a parasitic capacitance C1 inside, which needs to be initialized first to eliminate the influence of parasitic capacitance on the test. Do not connect any cables, take the first core of JP2 as an example, the micro-control chip sets the 17th pin U1_28 to low level, and controls U3 to open; the micro-control chip sets the 18th pin U12_Z to high level ;The micro-control chip sets the 12th pi...

Embodiment 2

[0065] like Figure 16-20 As shown, it is a schematic diagram of Embodiment 2 of the present invention, including an MCU module, a cable single-end test module, a line hunting module, a line measuring module and a display module. The MCU module controls the cable single-end testing module, the hunting module and the testing module, and displays the results to the display module.

[0066] The principle of the measuring line module is the same as that of the existing line measuring instrument.

[0067] The MCU module is connected with a hunting module, and its working principle is: the sound signal sent by the hunting signal oscillating sounder is connected to the port of the target cable through the RJ45 / RJ11 universal interface, so that a surrounding loop is generated around the target cable loop. For the sound signal field, use a high-sensitivity inductive line finder to quickly identify the signal field it sends out along the way and at the end of the loop, so as to find th...

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Abstract

The invention provides a tester for single-ended connected twisted pair crosstalk hunting of a cable. The tester comprises a tester host and a receiver, the tester host is in signal connection with the receiver. The tester host comprises a host power supply, an LED display module, an MCU module and a switch control module. The host power supply is electrically connected with the MCU module; the switch control module, the MCU module and the LED display module are connected in sequence. The MCU module is connected with a hunting signal transmitting module, a cable testing module, a cable single-end testing module and a twisted-pair crosstalk testing module. The receiver comprises a receiver power supply, an analog signal receiving module, a digital signal receiving module, a far-end line measuring module and a sound production module; and the receiver power supply is respectively connected with the analog signal receiving module, the digital signal receiving module and the far-end cabletesting module. The tester can detect common errors of cables, is simple and convenient to use, and improves the working efficiency of testers.

Description

technical field [0001] The invention relates to a tester for cable single-end connected twisted-pair crosstalk hunting. Background technique [0002] Since cables are mainly used for signal transmission, there are certain requirements for their physical characteristics and electrical performance. Various tests need to be performed on it during use, and a tester is needed to check whether its performance is normal and meets the requirements of use. The detection content generally includes open circuit short circuit, wiring error and crosstalk. [0003] However, the existing cable tester test whether the continuity is normal needs to be connected to the test instrument at both ends of the cable, the cable core must be more than 2 cores, and can only test whether the current cable continuity is normal, and where If there is a problem with one wire core, it is impossible to judge which end of the wire core has the problem, resulting in cumbersome testing steps and reducing the...

Claims

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Application Information

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IPC IPC(8): G01R31/54G01R31/58G01R31/60G01R31/66
Inventor 林东航
Owner 林东航
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