USB v2.0 Interface Analyser Module
USB2.0 is a common interface. It has 4 Connect Lines, 2 for GND, the other 2 for signal (D and D-). Generally, the signals of two lines are opposite, if one line’s signal is High, the other line’s signal is Low. In this way it can improve its capability of anti-noise and anti-interference. USB just use such differential signal to transmit at a high speed.
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