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Method and device for determining differential line test information

A technology for circuit testing and determining methods, applied in the direction of electronic circuit testing, measuring electricity, measuring devices, etc., can solve problems such as low test efficiency and inability to test circuit boards, and achieve the effect of improving test efficiency and accuracy

Active Publication Date: 2020-02-28
南京科诚软件技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method and equipment for determining differential line test information to solve the problems in the prior art that the test efficiency is low and the internal impedance strip of the circuit board cannot be tested for the differential impedance test of the circuit board.

Method used

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  • Method and device for determining differential line test information
  • Method and device for determining differential line test information

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Embodiment 1

[0037] In this embodiment, a method for determining differential line test information is provided, figure 1 is a flowchart of a method for determining differential line test information according to an embodiment of the present invention, such as figure 1 As shown, the process includes the following steps:

[0038] S101: Obtain the printed circuit board design file; after the PCB printed circuit board design is completed, the printed circuit board design file can be automatically extracted according to the design software cadence, and the printed circuit board design file includes various types, such as test point information files, Line width information files, impedance design value files, etc., the present invention can obtain one or more of them.

[0039] S102: Determine the network name of the differential line pair according to the printed circuit board design document; the extracted printed circuit board design document contains all network information of the PCB, and...

Embodiment 2

[0100] An embodiment of the present invention also provides a computer-readable storage medium, where the computer-executable instruction is stored in the computer-executable instruction, and the computer-executable instruction can execute the method for determining differential line test information in any of the above method embodiments. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a flash memory (Flash Memory), a hard disk (HardDisk Drive) , abbreviation: HDD) or a solid-state hard drive (Solid-State Drive, SSD), etc.; the storage medium may also include a combination of the above-mentioned types of memory.

Embodiment 3

[0102] Figure 7 It is a schematic diagram of a hardware structure of a computer device according to a method for determining differential line test information according to an embodiment of the present invention, as shown in Figure 7 As shown, the device includes one or more processors 710 and memory 720, Figure 7 A processor 710 is taken as an example.

[0103] The device for executing the method for determining differential line test information may further include: an input device 730 and an output device 740 .

[0104] Processor 710, memory 720, input device 730, and output device 740 may be connected by bus or other means, Figure 7 Take connection via bus as an example.

[0105] The processor 710 may be a central processing unit (Central Processing Unit, CPU). The processor 710 may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, A...

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Abstract

Provided in the present invention are a differential line testing information determination method and device, the method comprising: acquiring a printed circuit board design file, the printed circuit board design file comprising all network information of a printed circuit board, test point information and the like; determining the network name of a differential line pair according to the printed circuit board design file; and determining test index information of the differential line pair according to the network name of the differential line pair and the printed circuit board design file. By means of the differential line testing information determination method provided by the present invention, test index information of a differential line pair is read by an automated device after the information is extracted, and automated testing is carried out according to the information of points, thereby greatly improving the testing efficiency and accuracy. Furthermore, impedance information of the whole circuit board may be tested, thereby solving the problems in existing technology of the efficiency of the differential impedance test on a circuit board being low and the inner impedance strips in the circuit board being unable to be tested.

Description

technical field [0001] The invention relates to the technical field of circuit board testing, in particular to a method and equipment for determining differential circuit test information. Background technique [0002] In order to improve the transmission rate and transmission distance, more and more high-speed serial buses are used in the computer industry and communication industry to realize high-speed interconnection between chips, boards, backplanes and service boards. The speed of these high-speed serial buses ranges from hundreds of Mbps of USB2.0, LVDS and FireWire1394 in the past to several Gbps and even 30Gbps of PCI-Express G1 / G2, SATAG1 / G2, XAUI / 2XAUI, XFI today. PCB customers in the computer and communication industries have higher and higher requirements for impedance control of differential traces, which makes PCB manufacturers and high-speed PCB designers face unprecedented challenges. How to test these differential lines after these PCBs are designed is also...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/28
CPCG01R31/2812
Inventor 杨连卫叶宗顺许弘
Owner 南京科诚软件技术有限公司