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High-speed original cable electrical integrity test fixture

A technology for testing fixtures and integrity, which is applied to the components of electrical measuring instruments, measuring devices, measuring electrical variables, etc. It can solve impedance discontinuity, S-parameter distortion, and cannot accurately control the manufacturing capacity of high-speed cables, etc. problem, to achieve the effect of good impedance continuity and avoid parameter distortion

Pending Publication Date: 2020-04-21
AMPHENOL ELECTRONICS ASSEMBLY XIAMEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the test of high-speed original cables has been plagued by various high-speed cable manufacturers, making the improvement of the rate performance of high-speed cables a major problem. When the frequency of the test is as high as 20GHz, especially the single-channel rate is as high as 25.89GbpsEthernet, 28Gbps For NRZ, 56Gbps PAM4, 112Gbps PAM4, and even 200Gbps PAM4, due to the limitation of the test fixture performance, such as the discontinuity of the characteristic impedance, the distortion and resonance of the test signal are easy to occur. Impedance discontinuity, insertion loss test curve resonance, S-parameter distortion and other testing technical problems, so high-speed cable manufacturers cannot accurately control the improvement of high-speed cable manufacturing capabilities

Method used

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  • High-speed original cable electrical integrity test fixture
  • High-speed original cable electrical integrity test fixture
  • High-speed original cable electrical integrity test fixture

Examples

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Effect test

Embodiment 1

[0083] Such as Figure 1 to Figure 12 As shown, the invention provides a high-speed original cable electrical integrity test fixture, comprising:

[0084] The lower shell 1 is provided with a plate groove 11 on the top of the lower shell 1;

[0085] The PCB board 2, the PCB board 2 is connected in the board groove 11, and the PCB board 2 is provided with a pair of signal lines 21 extending from one end of the PCB board 2 to the other end;

[0086] The upper shell 3, the upper shell 3 is connected to the top of the lower shell 1, and the upper shell 3 is provided with a pressure block 6 groove 31;

[0087] The original cable 4, the original cable 4 is connected to one end of the PCB board 2, the original cable 4 includes a pair of wire ends 41, and each conductive end is electrically connected to a signal line 21;

[0088] A pair of connectors 5, the pair of connectors 5 are connected to the other end of the PCB board 2, and each connector 5 is electrically connected to a sig...

Embodiment 2

[0107] When using the high-speed original cable electrical integrity test fixture involved in the present invention to test the original cable 4 of a certain specification, the test result curve is judged by the frequency band on the abscissa and the attenuation value of the wire on the ordinate. The smoother the curve, the test result The better, by replacing the connector 5 with different specifications, the test fixture is suitable for testing in different frequency bands, so as to meet the requirements for test parameters and avoid distortion of some parameters.

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Abstract

A high-speed original cable electrical integrity test fixture comprises a lower shell, a PCB, an upper shell, an original cable, a pair of connectors, a pressing block and a rotating arm, wherein a top of the lower shell is provided with a plate groove; the PCB is connected into the plate groove, and a pair of signal lines extending from one end of the PCB to the other end of the PCB is arrangedon the PCB; the upper shell is connected to the top of the lower shell, and a pressing block groove is arranged in the upper shell; the original cable is connected to one end of the PCB, the originalcable includes a pair of wire ends, and each conductive end is electrically connected to one signal line; the pair of connectors is connected to the other end of the PCB, and each connector is electrically connected to one signal line; one end of the pressing block is rotatably connected into the pressing block groove, and the other end of the pressing block is used for pressing the pair of wire ends; and the rotating arm is rotatably connected to the top of the upper shell and is used for pressing the pressing block so as to press the pair of wire ends. The high-speed original cable electrical integrity test fixture provided by the invention is good in impedance continuity, avoids parameter distortion, and can be applied to tests of the original cables up to 20 GHz to 60 GHz.

Description

technical field [0001] The invention belongs to the technical field of electrical testing, and more specifically relates to a high-speed original cable electrical integrity testing fixture. Background technique [0002] With the storage and transmission of large data and the doubling of the data rate of modern high-speed cables, the manufacture and testing of high-speed bulk cables has become particularly important. [0003] At present, the test of high-speed original cables has been plagued by various high-speed cable manufacturers, making the improvement of the rate performance of high-speed cables a major problem. When the frequency of the test is as high as 20GHz, especially the single-channel rate is as high as 25.89GbpsEthernet, 28Gbps For NRZ, 56Gbps PAM4, 112Gbps PAM4, and even 200Gbps PAM4, due to the limitation of the test fixture performance, such as the discontinuity of the characteristic impedance, the distortion and resonance of the test signal are easy to occu...

Claims

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Application Information

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IPC IPC(8): G01R1/04
CPCG01R1/0408
Inventor 杨文初吴宜辉
Owner AMPHENOL ELECTRONICS ASSEMBLY XIAMEN CO LTD
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