A usb data cable tester

Abstract

The invention discloses a USB data line tester, which comprises a main control module, a first USB interface chip module, a first USB interface chip module, a first USB interface and a second USB interface, and the first USB interface chip module 1. The system bus interfaces of the second USB interface chip module are all connected to the main control module, and the USB communication interfaces of the first USB interface chip module and the second USB interface chip module are respectively connected with the first USB interface and the second USB interface. The USB interface is connected, and the first USB interface and the second USB interface are used to connect with two USB plugs of the tested USB data line. The USB data line tester provided by the present invention has the advantages of fast testing speed and high testing accuracy when performing performance testing on USB data lines, and can well meet the requirements of enterprise production lines for testing the performance of USB data lines.

Description

technical field [0001] The invention relates to a tester, in particular to a USB data line tester. Background technique [0002] With the popularization of smart phones, the USB data cable for mobile phones has become one of the necessary supplies for mobile phone users. It is either used to charge the mobile phone or to connect to a computer for data transmission. When producing USB data cables for mobile phones, it is necessary to carry out related performance testing, mainly including basic electrical characteristic testing and transmission performance testing. The electrical characteristic detection is mainly to detect whether the connection of the data line is normal, the size of the connection resistance, whether there is a short circuit between the wires, etc. Generally, a wire tester is used for a simple on-off test, that is, only one of the five wires of the USB data line is tested. Whether there is a short circuit between the wires, whether the wires are open, the...

AI Technical Summary

Problems solved by technology

These three methods all have disadvantages such as high equipment cost and slow test speed. It takes at least 20 seconds to use a bit error rate analyzer, about 30 seconds to observe the eye diagram with an oscilloscope, and 3 minutes to connect to a computer for actual data transmission. above

This kind of test speed cannot meet the needs of the production line at all, so companies usually only use one of the methods to conduct random testing of products, and cannot test each data line, so that the transmission performance of each data line cannot be guaranteed.

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