Patent ID: 8400173

Claim:
An apparatus for testing a device (DUT), comprising: a probe card configured for testing a DUT; a thermal management apparatus disposed on the probe card to heat and/or cool the probe card; a sensor disposed on the probe card and coupled to the thermal management apparatus to provide data to the thermal management apparatus corresponding to a temperature of a location of the probe card; a first connector disposed on the probe card and coupled to the thermal management apparatus for connecting to a first power source internal to a tester; and a second connector, different than and electrically insulated from the first connector, disposed on the probe card and coupled to the thermal management apparatus for connecting to a second power source external to the tester, wherein the thermal management apparatus includes control means configured to change an operational mode of the thermal management apparatus depending on whether the first connector but not the second connector is receiving power, the second connector but not the first connector is receiving power, or both the first connector and the second connectors are receiving power.