Patent ID: 7737715

Claim:
Test equipment for a device under test (DUT), comprising: an adapter board configured to connect to multiple connection terminals of the DUT via a removably attachable socket which holds the DUT; a tester which sends and receives test signals to the DUT through the adapter board and which supplies power to the DUT through the adapter board; wherein an internal power bus of the DUT comprises a Vdd component and a Vss component, wherein one of at least two power connection terminals of the DUT connects to the Vdd component and another of the at least two power connection terminals connect to the Vss component, and wherein one of another at least two power connection terminals of the DUT connects to the Vss component and another of the another at least two power connection terminals connect to the Vdd component; wherein, the adapter board supplies power from the tester to the DUT through the at least two power connection terminals of the DUT and monitors voltage at the another at least two power connection terminals of the DUT; and wherein, the tester includes a compensation unit which controls the power supplied to the DUT based on the voltage monitored at the another at least two power connection terminals.