Patent ID: 6313654
Filing Date: 2001-11-06
Classification: G01R

Abstract:
A device testing apparatus comprising:a chamber having an interior test stage for testing a device;a cooling unit able to cool the inside of the chamber to a temperature less than ordinary temperature;a heating unit able to heat the inside of the chamber to return the chamber to ordinary temperature;a temperature sensor for detecting the temperature inside the chamber; anda temperature controller for controlling the output of at least one of the cooling unit and heating unit in accordance with an output from the temperature sensor, whereinthe temperature controller comprises:reset alarm detecting means for detecting if a reset signal relating to an abnormality inside the chamber for stopping the device testing apparatus has been emitted andordinary temperature resetting means for stopping the cooling by the cooling unit and starting up the heating unit to heat the inside of the chamber to return the chamber to ordinary temperature for preventing condensation inside the chamber based on the reset alarm signal detected by the reset alarm detecting means.