Test interface boards, test systems, and methods of operating test interface boards

A test system comprising:

• an automated test equipment (ATE) configured to generate a test signal;
• and
• a test interface board configured to receive the test signal,
• wherein the test interface board is configured to:
• duplicate the test signal, and apply a plurality of duplicated test signals to each of a plurality of devices under test through one of corresponding channels, wherein the plurality of devices under test are divided into a plurality of groups of devices under test;
• provide the ATE with a plurality of test result signals received from each of the devices under test in response to the plurality of duplicated test signals;
• and
• receive a plurality of status signals from each of the plurality of devices under test and provide a timing synchronization signal to the ATE, wherein each of the plurality of status signals indicates a completion of a test operation in one of the plurality of devices under test, the test operation is associated with the test signal, and the timing synchronization signal is activated when all of the plurality of status signals indicate the completion of the test operation.

A method of operating a test interface board electrically connected to a plurality of devices under test, the method comprising:

• duplicating a test signal from an automated test equipment (ATE) to provide a plurality of duplicated test signals to each of the plurality of devices under test;
• provide the ATE with a plurality of test result signals received from each of the plurality of devices under test in response to the plurality of duplicated test signals;
• and
• receiving a plurality of status signals from each of the plurality of devices under test to provide a timing synchronization signal to the ATE, wherein each of the plurality of status signals indicates a completion of a test operation in one of the plurality of devices under test, the test operation is associated with the test signal, and the timing synchronization signal is activated when all of the plurality of status signals indicate the completion of the test operation.