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USB 3.0 cable testing method and device

A USB3.0, test method technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of high cost, large number, low test efficiency, etc., to achieve real and reliable data, simple operation, and improve test efficiency. Effect

Active Publication Date: 2014-10-08
EVERPRO TECH COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This test method can basically guarantee that the cables that pass the test can be used, but the test process requires a lot of human participation, and the test needs to use a computer, which is large in size, high in cost, low in test efficiency, and is not suitable for mass production.

Method used

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Examples

Experimental program
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Embodiment 1

[0027] see figure 1 , discloses a diagram of a test mechanism for implementing the USB 3.0 test method of the present invention, including a first USB 3.0 chip 1, a second USB 3.0 chip 2, and a USB 3.0 cable 3 to be tested connected between the two USB 3.0 chips, The USB 3.0 cable testing method is to set two USB 3.0 chips into loopback mode, wherein the first USB 3.0 chip 1 sends data to the second USB 3.0 chip 2 through the USB 3.0 cable to be tested, and the second USB 3.0 chip 2 Return the received data to the first USB 3.0 chip 1, observe the training results of the loopback mode of the USB 3.0 chip, and judge whether the USB 3.0 cable to be tested is normal.

[0028] According to the USB 3.0 specification, the first USB 3.0 chip 1 will automatically detect whether it has received the loopback data sent by the second USB 3.0 chip 2 and compare it with the sent data, and record the error value, no other measuring instruments are needed. Therefore, the loopback mode is act...

Embodiment 2

[0037] See attached figure 2 , discloses a testing mechanism diagram of a USB 3.0 testing method according to another specific embodiment of the present invention. Embodiment 2 is basically the same as Embodiment 1, the difference is that it also has a display device 4, and the display terminal 4 is used to display the error data read from the first USB 3.0 chip.

[0038] Wherein, the first USB 3.0 chip sends the error number to the computer through a serial port or other means and then to the display terminal, or directly sends it to a display terminal such as LCD for display.

[0039] The USB 3.0 chip includes a chip in a USB 3.0 host, a chip in a USB 3.0 hub, or a chip for other purposes.

[0040] In a specific embodiment, the USB 3.0 interface chip can be the FX3 chip of Cypress Company. The chip comes with USB 3.0 logic circuit and ARM9 processor core. The ARM9 processor can read the status of the USB 3.0 interface and operate on the USB 3.0 interface. So the process...

Embodiment 3

[0051] The invention also discloses a USB 3.0 cable testing device, including a first USB 3.0 chip 1, a second USB 3.0 chip 2, a USB 3.0 cable 3 to be tested connected between the two USB 3.0 chips, and a display device 4. The test device is tested using the above-mentioned test method.

[0052] The USB 3.0 cable to be tested in the present invention includes a USB 3.0 copper cable and a USB 3.0 active optical cable.

[0053] The present invention uses two USB 3.0 chips to enter the USB 3.0 loopback mode after being connected by the USB 3.0 cable to be tested, and judges the quality of the USB 3.0 cable to be tested by reading the error count inside the USB 3.0 chip in the loopback mode. If you cannot enter loopback mode, the cable quality is poor and the test failed. If the number of errors in the test process exceeds the set threshold, the test can also be considered as a failure.

[0054] Therefore, the present invention only needs to use the USB 3.0 chip, including the U...

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Abstract

The invention discloses a USB 3.0 cable testing method and device. The device comprises two USB 3.0 chips and a USB 3.0 cable to be tested, wherein the USB 3.0 cable to be tested is connected between the two chips. The two USB 3.0 chips are set to enter a loop mode, the training result of the loop mode of the USB chips is observed, and whether the cable to be tested is normal or not is judged. If the USB chips cannot enter the loop mode, the cable to be tested cannot be practically used. If the USB chip can enter the loop mode, the quality of the cable to be tested is judged according to the error number in the USB chips. When the error number is larger than a threshold value, testing is thought to be unsuccessful. According to the USB 3.0 cable testing method and device, the loop mode is utilized, the operation mode is simple, cost is low, the using process of a final user is simulated in the testing process, the testing result is in good consistency with the performance of the USB 3.0 cable in the final using process, the worker involving frequency is very low in the testing process, and testing efficiency is greatly improved.

Description

technical field [0001] The present invention relates to the field of USB 3.0 communication, in particular to a USB 3.0 cable testing method and a testing device thereof. Background technique [0002] With the popularity of USB 3.0 technology, people's demand for USB 3.0 cables is increasing. However, the current testing methods for USB 3.0 cables have brought obstacles to the mass production of USB 3.0 cables. Traditional USB 3.0 cable testing methods include: dedicated instrument testing, simple handheld instrument testing, and manual testing. [0003] Among them, the special instrument test has a high authority. It comprehensively evaluates the quality of the cable to be tested by measuring the technical indicators such as impedance, crosstalk, and deviation of the USB 3.0 cable. However, this kind of special instrument is very expensive, and the test efficiency is low, requiring the operator to have high professional skills, so it cannot meet the needs of mass productio...

Claims

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Application Information

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IPC IPC(8): G01R31/02
Inventor 江辉李笑天汤金宽
Owner EVERPRO TECH COMPANY
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