Test device and method for information transmission interfaces

摘要

This specification discloses a test device and method for information transmission interfaces. An information processing system is installed with a test mechanism. An element is connected to an information transmission interface of the information processing system to form a loop. The test mechanism sends out a test signal to the loop through an information transmission interface. The test signal is then sent back to the information processing system for comparison via another information transmission interface. This achieves the goal of testing information transmission interfaces. The invention can save the cost in comparison with the conventional tools.