A test fixture for a PCIe 4.0 slot

Abstract

The invention provides a test fixture for a PCIe 4.0 slot. The PCIe 4.0 slot to be tested is packaged in a double in-line manner. The test fixture comprises: a test fixture body, wherein the first circuit board is welded with a PCIe 4.0 slot to be tested, each signal end of the PCIe 4.0 slot to be tested respectively leads out all signal lines in a single-end mode, the lengths of the signal linesare equal, and the other end of each signal line is connected with an SMA connector; The second circuit board is welded with a golden finger, the golden finger is matched with a PCIe 4.0 slot to be tested, all signal lines are led out from signal ends of the golden finger in a single-end mode, the lengths of the signal lines are equal, and the other end of each signal line is connected with an SMAconnector. According to the invention, the performance parameters of the PCIe 4.0 slot can be tested.

Description

technical field [0001] The invention relates to the technical field of signal transmission, in particular to a test fixture for a PCIe 4.0 slot. Background technique [0002] With the development of modern processor technology, it is a general trend to use high-speed differential bus instead of parallel bus in the field of interconnection. Compared with single-ended parallel signals, high-speed differential signals can use higher clock frequencies, thereby using fewer signal lines, and achieving bus bandwidths that previously required many single-ended parallel data signals. [0003] PCI-Express (peripheral component interconnect express) is a high-speed serial computer expansion bus standard, which has many improvements over previous standards, including higher maximum system bus throughput, lower I / O pin count and more Small physical size, better bus device performance scaling, more detailed error detection and reporting mechanism (Advanced Error Reporting, AER) and nativ...

AI Technical Summary

Problems solved by technology

[0005] At this stage, PCIe 4.0 is still a new technology, and the performance of PCIe 4.0 slots introduced by various connector manufacturers is not perfect, and actual measurement and verification are still needed

Most of the existing PCIe test fixtures are PCIe3.0 fixtures, which pay less attention to details in the design. Direct application to PCIe 4.0 has a great impact on the signal and cannot reflect the actual performance of the PCIe 4.0 slot.

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