Wire order test method

A test method and line sequence technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem of not being able to provide wrong connection line sequence, and achieve the effect of saving the cost of test equipment

Active Publication Date: 2011-04-13
LIUZHOU DADI TELECOMM EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When testing the wire sequence of Ethernet network cables, most of the previous test instruments can only test crossover or straight connection lines. When the wire sequence of network cables is wrong, it can only prompt non-crossover or straight connection lines, and cannot provide specific wrong connection line sequence.

Method used

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Examples

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Embodiment Construction

[0022] Taking the network cable of the RJ45 interface as an example to describe the technical solution of the present invention in detail,

[0023] see attached figure 1 , the network cables are respectively connected in series with resistors with different resistance values ​​on the remote loopback lines 1-8, which are respectively R1-R8. The resistance value of the resistor is much larger than the on-resistance of the 8-way analog switch. The value of R1~R8 should follow the principle that the sum of any two resistance values ​​is not equal, and the sum of any two resistances has a large difference. . At the test end, any line can be connected to a 5V power supply through the 8-channel analog switch, and the other 7 lines are respectively sent to the analog switch.

[0024] The 8-way analog switch is used to evaluate and sample the output signal in series with the resistor R9 to the ground, and the voltage value at both ends of the resistor R9 is detected by the AD convers...

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Abstract

The invention discloses a wire order test method for testing cable wire order. The method is as follows: a first N-path analog quantity switch selector is placed at the side of a cable to be tested, and a far-end loopback line is arranged; the far-end loopback line is respectively connected with resistors R1-RN in series, and the requirement of selecting far-end loopback resistors is that the sumof any two resistors is not equal; local 5 V high level is output through the line and then delivered to a far-end loopback passive joint; the 5 V high level is looped back to the local through the tandem resistors in the line and then through the tandem resistors on the other line; and because the sum of any two far-end resistors is not equal, the partial pressure value on any loopback line is not equal, thus the connection manner of the wire order can be judged. In the invention, a single port device is used to achieve measurement and the cost of the test device can be saved. By using the method, the measurement of any wire order can be realized. The method can be used in more occasions owing to the any wire order judgment function.

Description

technical field [0001] The present invention relates to communication cable testing, in particular to a line sequence testing method Background technique [0002] When testing the wire sequence of Ethernet network cables, most of the previous test instruments can only test the crossover or straight connection. When the wire sequence of the network cable is wrong, it can only prompt the non-crossover or straight connection, and cannot provide the specific wrong connection wire sequence. Even if it is possible to test an instrument with any line sequence, it can only be achieved by using two instruments for parallel testing or two Ethernet ports of one instrument for loop testing. Contents of the invention [0003] The purpose of the present invention is to provide a test method for realizing arbitrary network line sequence by using a single-port Ethernet and a remote passive loopback connector. [0004] To achieve the above object, the technical scheme adopted in the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/18G01R31/02
Inventor 韦国英王卫胡敏
Owner LIUZHOU DADI TELECOMM EQUIP
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