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TEST DEVICE AND METHOD FOR TESTING SERIAL PORTS OF COMPUTING DEVICE

  • US 20120271980A1
  • Filed: 06/24/2011
  • Published: 10/25/2012
  • Est. Priority Date: 04/19/2011
  • Status: Abandoned Application
First Claim
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1. A test device for testing serial ports of a computing device, the test device comprising:

  • a multiplexer;

    a universal serial bus (USB) interface that is connected to a USB port of the computing device;

    a plurality of serial port interfaces, each of the serial port interfaces being connected to one of the serial ports;

    a signal conversion unit that is connected to the USB interface, and connected to the serial port interfaces through the multiplexer; and

    a switch unit operable to form a test channel between a serial port and the USB port by controlling the serial port to communicate with the signal conversion unit through the multiplexer;

    wherein the signal conversion unit is operable to convert a serial signal into a USB signal when the serial signal is transmitted from the serial port, and send the converted USB signal to the computing device through the USB port to determine whether a signal sending function of the serial port is normal, or convert a USB signal into a serial signal when the USB signal is transmitted from the USB port, and send the converted serial signal to the computing device through the serial port to determine whether a signal receiving function of the serial port is normal.

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