USB Connector inspection focus

Early low-speed USB Connectors do not need to provide a large number of signal transmission, the electrical performance of the USB Connector up to only require direct current continuity or not, mechanical performance for the test focus, such as insertion force, plug life, terminal retention and contact resistance Testing and so on. In the era of high-speed USB Connectors, the purpose of the USB Connector from the original only requires the current is turned on to a large number of signal transmission, the focus on the measurement has also increased the relative impedance, transmission delay, transmission delay, attenuation, crosstalk Test items.

With the transmission of data, led to HDMI, DisplayPort and USB 3.1 Type-C and other high-frequency USB Connectors have come out, the USB Connector transmission speed from Mbps level to Gbps level. When the signal speed continues to accelerate, how to reduce noise interference has become an important issue, so the single-line transmission architecture gradually converted into twisted-pair mode, even in the form of coaxial line, in order to reduce their own noise and enhance the ability to resist external interference; However, crosstalk testing is also included in one of the verification projects because of the impact of multiple or more signals on both high-speed transmissions.

In addition, with the trend of miniaturization of products, with the USB Connector used in the cable group of lightweight and can be around the good demand for wire, the core line is bound to become more and more fine. The smaller the diameter, the smaller the conductor, the high frequency signal transmitted on-line will be caused by the characteristics of the conductor itself, the greater the loss of signal power. In order to effectively control the loss of the transmission line will not affect the quality, insertion loss and reflection loss measurement is also Verification of one of the items.

Thin and small plus fast and large amount of data transmission requirements, is the inevitable trend of future USB Connector development, the USB Connector industry has been out of the traditional mode of mechanical processing towards microwave components and high frequency characteristics of the development, measurement and analysis of the existing USB Connector industry Still need to invest a lot of research manpower